diff --git a/kadmos/vistoms/interface_vistoms.py b/kadmos/vistoms/interface_vistoms.py
index d273cca956f3de9eba3c9abec89d09149a5c2278..11e81552efa074834b27b5d09594f59dc8cebce2 100644
--- a/kadmos/vistoms/interface_vistoms.py
+++ b/kadmos/vistoms/interface_vistoms.py
@@ -15,10 +15,10 @@ from kadmos.cmdows.cmdows import find_cmdows_file
 from kadmos.graph import *
 
 # Folder and file settings
-UPLOAD_FOLDER = ''       # TODO Benedikt: This can be removed
-UPLOAD_FOLDERS = dict()  # TODO Benedikt: This is the dictionary with the mapping between session_id and temp folder
+UPLOAD_FOLDERS = dict()
 TEMP_FILE = 'tmp'
 
+
 def interface(debug=True, tempdir=None):
 
     # Initial settings
@@ -56,8 +56,7 @@ def interface(debug=True, tempdir=None):
         # Create temporary directory and its mapping with the session ID in the global variable
         UPLOAD_FOLDERS[session_id] = tempfile.mkdtemp()
 
-        # TODO: Benedikt session_id should be stored in the HTML to be used in function calls.
-        return render_template('VISTOMS.html', new=0, error=error, message=message, session_id=session_id)
+        return render_template('VISTOMS_sessions.html', new=0, error=error, message=message, sessionID=session_id)
 
     # Info
     @app.route('/info')
@@ -81,6 +80,7 @@ def interface(debug=True, tempdir=None):
                 # get request form
                 fileType = request.form['fileType']
                 newGraphID = request.form['newGraphID']
+                sessionID = request.form['sessionID']
                 uploaded_files = request.files.getlist("file[]")
 
                 number_of_files = len(uploaded_files)
@@ -112,9 +112,7 @@ def interface(debug=True, tempdir=None):
                     elif fileType == 'Database' and dgFile.filename.rsplit('.', 1)[1].lower() != "zip":
                         return ("ERROR: Wrong file type! Please use a valid zip file")
 
-                    # TODO Benedikt: here the right upload_folder should be collected based on the session_id
-                    # TODO Benedikt: This should be done for all functions using the UPLOAD_FOLDER
-                    upload_folder = UPLOAD_FOLDERS[session_id]
+                    upload_folder = UPLOAD_FOLDERS[sessionID]
                     if not os.path.exists(upload_folder):
                         os.makedirs(upload_folder)
 
@@ -188,22 +186,24 @@ def interface(debug=True, tempdir=None):
             # Get request form
             path = os.path.join(request.form['path'], '')
             fileType = request.form['fileType']
+            sessionID = request.form['sessionID']
+            upload_folder = UPLOAD_FOLDERS[sessionID]
 
             if not os.path.isdir(path):
                 os.makedirs(os.path.dirname(path))
 
-            for aFile in os.listdir(UPLOAD_FOLDER):
+            for aFile in os.listdir(upload_folder):
                 if aFile.endswith(".kdms"):
                     fileName = aFile.split('.')[0]
                     fileName_split = fileName.split('_')
                     if "mpg" not in fileName_split and "backup" not in fileName_split:  # Do not loop through mpg files
                         graphFileName = fileName + ".kdms"
                         mpgFileName = fileName + "_mpg.kdms"
-                        if os.path.exists(os.path.join(UPLOAD_FOLDER, mpgFileName)):
-                            graph = load(os.path.join(UPLOAD_FOLDER, graphFileName), file_check_critical=False)
-                            mpg = load(os.path.join(UPLOAD_FOLDER, mpgFileName), file_check_critical=False)
+                        if os.path.exists(os.path.join(upload_folder, mpgFileName)):
+                            graph = load(os.path.join(upload_folder, graphFileName), file_check_critical=False)
+                            mpg = load(os.path.join(upload_folder, mpgFileName), file_check_critical=False)
                         else:
-                            graph = load(os.path.join(UPLOAD_FOLDER, graphFileName), file_check_critical=False)
+                            graph = load(os.path.join(upload_folder, graphFileName), file_check_critical=False)
                             mpg = None
 
                         # Add problem function roles if they are not already existing
@@ -229,26 +229,26 @@ def interface(debug=True, tempdir=None):
                             file_type = "cmdows"
                             file = graph_name + ".xml"
                             # Save as CMDOWS file
-                            graph.save(os.path.join(UPLOAD_FOLDER, graph_name), file_type=file_type,
+                            graph.save(os.path.join(upload_folder, graph_name), file_type=file_type,
                                        graph_check_critical=False, mpg=mpg)
                             # Copy CMDOWS file from temporary folder to user's download folder
-                            copyfile(os.path.join(UPLOAD_FOLDER, file), os.path.join(path, file))
+                            copyfile(os.path.join(upload_folder, file), os.path.join(path, file))
                             # remove temporary CMDOWS file
-                            os.remove(os.path.join(UPLOAD_FOLDER, file))
+                            os.remove(os.path.join(upload_folder, file))
                         elif fileType == "KDMS files":
                             file_type = "kdms"
                             # Save as kdms file
-                            graph.save(os.path.join(UPLOAD_FOLDER, graph_name), file_type=file_type,
+                            graph.save(os.path.join(upload_folder, graph_name), file_type=file_type,
                                        graph_check_critical=False, mpg=mpg)
                             file = graph_name + ".kdms"
                             mpgfile = graph_name + "_mpg.kdms"
                             # Copy kdms file from temporary folder to user's download folder
-                            copyfile(os.path.join(UPLOAD_FOLDER, file), os.path.join(path, file))
+                            copyfile(os.path.join(upload_folder, file), os.path.join(path, file))
                             # remove temporary kdms file
-                            os.remove(os.path.join(UPLOAD_FOLDER, file))
-                            if os.path.exists(os.path.join(UPLOAD_FOLDER, mpgfile)):
-                                copyfile(os.path.join(UPLOAD_FOLDER, mpgfile), os.path.join(path, mpgfile))
-                                os.remove(os.path.join(UPLOAD_FOLDER, mpgfile))
+                            os.remove(os.path.join(upload_folder, file))
+                            if os.path.exists(os.path.join(upload_folder, mpgfile)):
+                                copyfile(os.path.join(upload_folder, mpgfile), os.path.join(path, mpgfile))
+                                os.remove(os.path.join(upload_folder, mpgfile))
             return path
 
         except Exception as e:
@@ -271,13 +271,16 @@ def interface(debug=True, tempdir=None):
             fileType = request.form['fileType']
             functionOrder = request.form['currentOrder'].split(',')
 
+            sessionID = request.form['sessionID']
+            upload_folder = UPLOAD_FOLDERS[sessionID]
+
             graphFileName = TEMP_FILE + '_' + graphID + '.kdms'
             mpgFileName = TEMP_FILE + '_' + graphID + '_mpg.kdms'
-            if os.path.exists(os.path.join(UPLOAD_FOLDER, mpgFileName)):
-                graph = load(os.path.join(UPLOAD_FOLDER, graphFileName), file_check_critical=False)
-                mpg = load(os.path.join(UPLOAD_FOLDER, mpgFileName), file_check_critical=False)
+            if os.path.exists(os.path.join(upload_folder, mpgFileName)):
+                graph = load(os.path.join(upload_folder, graphFileName), file_check_critical=False)
+                mpg = load(os.path.join(upload_folder, mpgFileName), file_check_critical=False)
             else:
-                graph = load(os.path.join(UPLOAD_FOLDER, graphFileName), file_check_critical=False)
+                graph = load(os.path.join(upload_folder, graphFileName), file_check_critical=False)
                 mpg = None
 
             # Add problem function roles if they are not already existing
@@ -294,18 +297,18 @@ def interface(debug=True, tempdir=None):
                 os.makedirs(os.path.dirname(path))
 
             if fileType == "kdms":
-                copyfile(os.path.join(UPLOAD_FOLDER, graphFileName), os.path.join(path, fileName + ".kdms"))
-                if os.path.exists(os.path.join(UPLOAD_FOLDER, mpgFileName)):
-                    copyfile(os.path.join(UPLOAD_FOLDER, mpgFileName), os.path.join(path, fileName + '_mpg' + ".kdms"))
+                copyfile(os.path.join(upload_folder, graphFileName), os.path.join(path, fileName + ".kdms"))
+                if os.path.exists(os.path.join(upload_folder, mpgFileName)):
+                    copyfile(os.path.join(upload_folder, mpgFileName), os.path.join(path, fileName + '_mpg' + ".kdms"))
             elif fileType == "cmdows":
                 file = fileName + ".xml"
                 # Save as CMDOWS file
-                graph.save(os.path.join(UPLOAD_FOLDER, fileName), file_type=fileType, graph_check_critical=False,
+                graph.save(os.path.join(upload_folder, fileName), file_type=fileType, graph_check_critical=False,
                            mpg=mpg)
                 # Copy CMDOWS file from temporary folder to user's download folder
-                copyfile(os.path.join(UPLOAD_FOLDER, file), os.path.join(path, file))
+                copyfile(os.path.join(upload_folder, file), os.path.join(path, file))
                 # remove temporary CMDOWS file
-                os.remove(os.path.join(UPLOAD_FOLDER, file))
+                os.remove(os.path.join(upload_folder, file))
             else:
                 return ("ERROR: Wrong file type!!!")
 
@@ -329,7 +332,10 @@ def interface(debug=True, tempdir=None):
             newGraphID = request.form['newGraphID']
             function_order = request.form['currentOrder'].split(',')
 
-            tmpDir = UPLOAD_FOLDER
+            sessionID = request.form['sessionID']
+            upload_folder = UPLOAD_FOLDERS[sessionID]
+
+            tmpDir = upload_folder
             graphFileName = TEMP_FILE + '_' + graphID + '.kdms'
             mpgFileName = TEMP_FILE + '_' + graphID + '_mpg.kdms'
             if os.path.exists(os.path.join(tmpDir, mpgFileName)):
@@ -341,7 +347,7 @@ def interface(debug=True, tempdir=None):
 
             newFileName = TEMP_FILE + '_' + newGraphID + '.kdms'
             graph.graph['name'] = newGraphName
-            graph.save(os.path.join(UPLOAD_FOLDER, newFileName), file_type="kdms", graph_check_critical=False, mpg=mpg)
+            graph.save(os.path.join(upload_folder, newFileName), file_type="kdms", graph_check_critical=False, mpg=mpg)
 
             newVistomsData = graph.vistoms_add_json(function_order=function_order, mpg=mpg, graph_id=newGraphID)
 
@@ -363,7 +369,10 @@ def interface(debug=True, tempdir=None):
             # get request form
             graphID = request.form['graphID']
 
-            tmpDir = UPLOAD_FOLDER
+            sessionID = request.form['sessionID']
+            upload_folder = UPLOAD_FOLDERS[sessionID]
+
+            tmpDir = upload_folder
             graphFileName = TEMP_FILE + '_' + graphID + '.kdms'
             backupGraphFileName = TEMP_FILE + '_' + graphID + '_backup.kdms'
             mpgFileName = TEMP_FILE + '_' + graphID + '_mpg.kdms'
@@ -392,10 +401,14 @@ def interface(debug=True, tempdir=None):
            :return: the graphs compressed as VISTOMS data
         """
         try:
+            # Load upload_folder based on session
+            sessionID = request.form['sessionID']
+            upload_folder = UPLOAD_FOLDERS[sessionID]
+
             # First of all, delete all graphs, that end with a _backup
-            deleteBackupGraphs()
+            deleteBackupGraphs(upload_folder)
 
-            tmpDir = UPLOAD_FOLDER
+            tmpDir = upload_folder
             newVIstomsDataArray = []
             file_list = os.listdir(tmpDir)
             if file_list:
@@ -419,7 +432,7 @@ def interface(debug=True, tempdir=None):
                         if graph.graph_has_nested_attributes('problem_formulation', 'function_order') and mpg == None:
                             function_order = graph.graph['problem_formulation']['function_order']
 
-                        graph.save(os.path.join(UPLOAD_FOLDER, graphFileName), file_type="kdms",
+                        graph.save(os.path.join(upload_folder, graphFileName), file_type="kdms",
                                    graph_check_critical=False, mpg=mpg)
 
                         newVIstomsDataArray.append(
@@ -442,7 +455,10 @@ def interface(debug=True, tempdir=None):
             # get request form
             graphID = request.form['graphID']
 
-            tmpDir = UPLOAD_FOLDER
+            sessionID = request.form['sessionID']
+            upload_folder = UPLOAD_FOLDERS[sessionID]
+
+            tmpDir = upload_folder
             graphFileName = TEMP_FILE + '_' + graphID + '.kdms'
             mpgFileName = TEMP_FILE + '_' + graphID + '_mpg.kdms'
             backupGraphFileName = TEMP_FILE + '_' + graphID + '_backup.kdms'
@@ -458,9 +474,9 @@ def interface(debug=True, tempdir=None):
                 backupMpg = None
 
             # Switch graph and backup graph (What used to be the backup graph is now the new graph and vice versa)
-            graph.save(os.path.join(UPLOAD_FOLDER, backupGraphFileName), file_type="kdms", graph_check_critical=False,
+            graph.save(os.path.join(upload_folder, backupGraphFileName), file_type="kdms", graph_check_critical=False,
                        mpg=backupMpg)
-            backupGraph.save(os.path.join(UPLOAD_FOLDER, graphFileName), file_type="kdms", graph_check_critical=False,
+            backupGraph.save(os.path.join(upload_folder, graphFileName), file_type="kdms", graph_check_critical=False,
                              mpg=mpg)
 
             # Get function_oder of the backup graph
@@ -476,14 +492,14 @@ def interface(debug=True, tempdir=None):
             return "ERROR: " + e.message
             # Logs the error appropriately.
 
-    def savePreviousGraph(graph_id):
+    def savePreviousGraph(graph_id, upload_folder):
         """
             Function saves the last graph, so you can revert a graph change within VISTOMS
 
             :param graph: Initial fundamental problem graph (FPG) to start working on the MDAO architecture definition
             :return: New VISTOMS json data with initial FPG
         """
-        path = UPLOAD_FOLDER
+        path = upload_folder
         # current graph and mpg name
         graphFileName = TEMP_FILE + '_' + graph_id + '.kdms'
         mpgFileName = TEMP_FILE + '_' + graph_id + '_mpg.kdms'
@@ -496,13 +512,13 @@ def interface(debug=True, tempdir=None):
             backupMpgFileName = TEMP_FILE + '_' + graph_id + '_mpg_backup.kdms'
             copyfile(os.path.join(path, mpgFileName), os.path.join(path, backupMpgFileName))
 
-    def deleteBackupGraphs():
+    def deleteBackupGraphs(upload_folder):
         """
             Function deletes all graphs that end with a _backup
         """
-        for file in os.listdir(UPLOAD_FOLDER):
+        for file in os.listdir(upload_folder):
             if file.endswith("_backup.kdms"):
-                os.remove(os.path.join(UPLOAD_FOLDER, file))
+                os.remove(os.path.join(upload_folder, file))
 
     ########################################################################################################################
 
@@ -527,7 +543,10 @@ def interface(debug=True, tempdir=None):
             xPath_include = str(request.form['xPath_include']).split(', ')
             xPath_exclude = str(request.form['xPath_exclude']).split(', ')
 
-            path = UPLOAD_FOLDER
+            sessionID = request.form['sessionID']
+            upload_folder = UPLOAD_FOLDERS[sessionID]
+
+            path = upload_folder
             graphFileName = TEMP_FILE + '_' + graphID + '.kdms'
             mpgFileName = TEMP_FILE + '_' + graphID + '_mpg.kdms'
             if os.path.exists(os.path.join(path, mpgFileName)):
@@ -572,7 +591,10 @@ def interface(debug=True, tempdir=None):
             # Get request form
             graphID = request.form['graphID']
 
-            path = UPLOAD_FOLDER
+            sessionID = request.form['sessionID']
+            upload_folder = UPLOAD_FOLDERS[sessionID]
+
+            path = upload_folder
             graphFileName = TEMP_FILE + '_' + graphID + '.kdms'
             mpgFileName = TEMP_FILE + '_' + graphID + '_mpg.kdms'
             if os.path.exists(os.path.join(path, mpgFileName)):
@@ -604,7 +626,10 @@ def interface(debug=True, tempdir=None):
             # Get request form
             graphID = request.form['graphID']
 
-            path = UPLOAD_FOLDER
+            sessionID = request.form['sessionID']
+            upload_folder = UPLOAD_FOLDERS[sessionID]
+
+            path = upload_folder
             graphFileName = TEMP_FILE + '_' + graphID + '.kdms'
             mpgFileName = TEMP_FILE + '_' + graphID + '_mpg.kdms'
             if os.path.exists(os.path.join(path, mpgFileName)):
@@ -636,7 +661,10 @@ def interface(debug=True, tempdir=None):
             # Get request form
             graphID = request.form['graphID']
 
-            path = UPLOAD_FOLDER
+            sessionID = request.form['sessionID']
+            upload_folder = UPLOAD_FOLDERS[sessionID]
+
+            path = upload_folder
             graphFileName = TEMP_FILE + '_' + graphID + '.kdms'
             mpgFileName = TEMP_FILE + '_' + graphID + '_mpg.kdms'
             if os.path.exists(os.path.join(path, mpgFileName)):
@@ -678,7 +706,10 @@ def interface(debug=True, tempdir=None):
 
             newFileName = TEMP_FILE + '_' + newGraphID + '.kdms'
 
-            path = UPLOAD_FOLDER
+            sessionID = request.form['sessionID']
+            upload_folder = UPLOAD_FOLDERS[sessionID]
+
+            path = upload_folder
             graphFileName = TEMP_FILE + '_' + graphID + '.kdms'
             mpgFileName = TEMP_FILE + '_' + graphID + '_mpg.kdms'
             if os.path.exists(os.path.join(path, mpgFileName)):
@@ -702,7 +733,7 @@ def interface(debug=True, tempdir=None):
                 # Add the graph with the updated function order to VISTOMS
                 newVistomsData = fpg_initial.vistoms_add_json(graph_id=newGraphID, mpg=mpg)
                 # Save the graph in temp/tmp.kdms
-                fpg_initial.save(os.path.join(UPLOAD_FOLDER, newFileName), file_type="kdms", graph_check_critical=False,
+                fpg_initial.save(os.path.join(upload_folder, newFileName), file_type="kdms", graph_check_critical=False,
                                  mpg=mpg)
 
                 return newVistomsData
@@ -726,10 +757,14 @@ def interface(debug=True, tempdir=None):
             function_order = request.form['currentOrder'].split(',')
             newPos = int(request.form['newPos'])
 
+            # Load upload_folder based on session
+            sessionID = request.form['sessionID']
+            upload_folder = UPLOAD_FOLDERS[sessionID]
+
             # Save previous graph as backup before making the changes
-            savePreviousGraph(graphID)
+            savePreviousGraph(graphID, upload_folder)
 
-            path = UPLOAD_FOLDER
+            path = upload_folder
             graphFileName = TEMP_FILE + '_' + graphID + '.kdms'
             mpgFileName = TEMP_FILE + '_' + graphID + '_mpg.kdms'
             if os.path.exists(os.path.join(path, mpgFileName)):
@@ -753,7 +788,7 @@ def interface(debug=True, tempdir=None):
                 # Add the graph with the updated function order to VISTOMS
                 newVistomsData = graph.vistoms_add_json(function_order=function_order, graph_id=graphID, mpg=mpg)
                 # Save the graph in temp/tmp.kdms
-                graph.save(os.path.join(UPLOAD_FOLDER, TEMP_FILE + '_' + graphID + '.kdms'), file_type='kdms',
+                graph.save(os.path.join(upload_folder, TEMP_FILE + '_' + graphID + '.kdms'), file_type='kdms',
                            graph_check_critical=False, mpg=mpg)
                 return newVistomsData
 
@@ -774,10 +809,14 @@ def interface(debug=True, tempdir=None):
             nodeName = str(request.form['nodeName'])
             function_order = request.form['currentOrder'].split(',')
 
+            # Load upload_folder based on session
+            sessionID = request.form['sessionID']
+            upload_folder = UPLOAD_FOLDERS[sessionID]
+
             # Save previous graph as backup before making the changes
-            savePreviousGraph(graphID)
+            savePreviousGraph(graphID, upload_folder)
 
-            path = UPLOAD_FOLDER
+            path = upload_folder
             graphFileName = TEMP_FILE + '_' + graphID + '.kdms'
             mpgFileName = TEMP_FILE + '_' + graphID + '_mpg.kdms'
             if os.path.exists(os.path.join(path, mpgFileName)):
@@ -796,7 +835,7 @@ def interface(debug=True, tempdir=None):
                 # Add the graph with the updated function order to VISTOMS
                 newVistomsData = graph.vistoms_add_json(function_order=function_order, graph_id=graphID, mpg=mpg)
                 # Save the graph in temp/tmp.kdms
-                graph.save(os.path.join(UPLOAD_FOLDER, TEMP_FILE + '_' + graphID + '.kdms'), file_type='kdms',
+                graph.save(os.path.join(upload_folder, TEMP_FILE + '_' + graphID + '.kdms'), file_type='kdms',
                            graph_check_critical=False, mpg=mpg)
 
                 return newVistomsData
@@ -820,10 +859,14 @@ def interface(debug=True, tempdir=None):
             edgeName = str(request.form['edgeName'])
             function_order = request.form['currentOrder'].split(',')
 
+            # Load upload_folder based on session
+            sessionID = request.form['sessionID']
+            upload_folder = UPLOAD_FOLDERS[sessionID]
+
             # Save previous graph as backup before making the changes
-            savePreviousGraph(graphID)
+            savePreviousGraph(graphID, upload_folder)
 
-            path = UPLOAD_FOLDER
+            path = upload_folder
             graphFileName = TEMP_FILE + '_' + graphID + '.kdms'
             mpgFileName = TEMP_FILE + '_' + graphID + '_mpg.kdms'
             if os.path.exists(os.path.join(path, mpgFileName)):
@@ -838,7 +881,7 @@ def interface(debug=True, tempdir=None):
             # Add the graph with the updated function order to VISTOMS
             newVistomsData = graph.vistoms_add_json(function_order=function_order, graph_id=graphID, mpg=mpg)
             # Save the graph in temp/tmp.kdms
-            graph.save(os.path.join(UPLOAD_FOLDER, TEMP_FILE + '_' + graphID + '.kdms'), file_type='kdms',
+            graph.save(os.path.join(upload_folder, TEMP_FILE + '_' + graphID + '.kdms'), file_type='kdms',
                        graph_check_critical=False, mpg=mpg)
 
             return newVistomsData
@@ -861,10 +904,14 @@ def interface(debug=True, tempdir=None):
             nodeList = request.form['nodeList'].split(',')
             function_order = request.form['currentOrder'].split(',')
 
+            # Load upload_folder based on session
+            sessionID = request.form['sessionID']
+            upload_folder = UPLOAD_FOLDERS[sessionID]
+
             # Save previous graph as backup before making the changes
-            savePreviousGraph(graphID)
+            savePreviousGraph(graphID, upload_folder)
 
-            path = UPLOAD_FOLDER
+            path = upload_folder
             graphFileName = TEMP_FILE + '_' + graphID + '.kdms'
             mpgFileName = TEMP_FILE + '_' + graphID + '_mpg.kdms'
             if os.path.exists(os.path.join(path, mpgFileName)):
@@ -887,7 +934,7 @@ def interface(debug=True, tempdir=None):
                 # Add the graph with the updated function order to VISTOMS
                 newVistomsData = fpg.vistoms_add_json(function_order=function_order, graph_id=graphID, mpg=mpg)
                 # Save the graph in temp/tmp.kdms
-                fpg.save(os.path.join(UPLOAD_FOLDER, TEMP_FILE + '_' + graphID + '.kdms'),
+                fpg.save(os.path.join(upload_folder, TEMP_FILE + '_' + graphID + '.kdms'),
                          file_type='kdms', graph_check_critical=False, mpg=mpg)
                 return newVistomsData
 
@@ -909,10 +956,14 @@ def interface(debug=True, tempdir=None):
             function_order = request.form['currentOrder'].split(',')
             nodeList = request.form['nodeList'].split(',')
 
+            # Load upload_folder based on session
+            sessionID = request.form['sessionID']
+            upload_folder = UPLOAD_FOLDERS[sessionID]
+
             # Save previous graph as backup before making the changes
-            savePreviousGraph(graphID)
+            savePreviousGraph(graphID, upload_folder)
 
-            path = UPLOAD_FOLDER
+            path = upload_folder
             graphFileName = TEMP_FILE + '_' + graphID + '.kdms'
             mpgFileName = TEMP_FILE + '_' + graphID + '_mpg.kdms'
             if os.path.exists(os.path.join(path, mpgFileName)):
@@ -938,7 +989,7 @@ def interface(debug=True, tempdir=None):
                 # Add the graph with the updated function order to VISTOMS
                 newVistomsData = fpg.vistoms_add_json(function_order=function_order, graph_id=graphID, mpg=mpg)
                 # Save the graph in temp/tmp.kdms
-                fpg.save(os.path.join(UPLOAD_FOLDER, TEMP_FILE + '_' + graphID + '.kdms'),
+                fpg.save(os.path.join(upload_folder, TEMP_FILE + '_' + graphID + '.kdms'),
                          file_type='kdms', graph_check_critical=False, mpg=mpg)
                 return newVistomsData
 
@@ -960,10 +1011,14 @@ def interface(debug=True, tempdir=None):
             function_order = request.form['currentOrder'].split(',')
             nodeList = request.form['nodeList'].split(',')
 
+            # Load upload_folder based on session
+            sessionID = request.form['sessionID']
+            upload_folder = UPLOAD_FOLDERS[sessionID]
+
             # Save previous graph as backup before making the changes
-            savePreviousGraph(graphID)
+            savePreviousGraph(graphID, upload_folder)
 
-            path = UPLOAD_FOLDER
+            path = upload_folder
             graphFileName = TEMP_FILE + '_' + graphID + '.kdms'
             mpgFileName = TEMP_FILE + '_' + graphID + '_mpg.kdms'
             if os.path.exists(os.path.join(path, mpgFileName)):
@@ -990,7 +1045,7 @@ def interface(debug=True, tempdir=None):
                 # Add the graph with the updated function order to VISTOMS
                 newVistomsData = fpg.vistoms_add_json(function_order=function_order, graph_id=graphID, mpg=mpg)
                 # Save the graph in temp/tmp.kdms
-                fpg.save(os.path.join(UPLOAD_FOLDER, TEMP_FILE + '_' + graphID + '.kdms'),
+                fpg.save(os.path.join(upload_folder, TEMP_FILE + '_' + graphID + '.kdms'),
                          file_type='kdms', graph_check_critical=False, mpg=mpg)
                 return newVistomsData
 
@@ -1012,10 +1067,14 @@ def interface(debug=True, tempdir=None):
             function_order = request.form['currentOrder'].split(',')
             nodeList = request.form['nodeList'].split(',')
 
+            # Load upload folder based on session
+            sessionID = request.form['sessionID']
+            upload_folder = UPLOAD_FOLDERS[sessionID]
+
             # Save previous graph as backup before making the changes
-            savePreviousGraph(graphID)
+            savePreviousGraph(graphID, upload_folder)
 
-            path = UPLOAD_FOLDER
+            path = upload_folder
             graphFileName = TEMP_FILE + '_' + graphID + '.kdms'
             mpgFileName = TEMP_FILE + '_' + graphID + '_mpg.kdms'
             if os.path.exists(os.path.join(path, mpgFileName)):
@@ -1046,7 +1105,7 @@ def interface(debug=True, tempdir=None):
                 # Add the graph with the updated function order to VISTOMS
                 newVistomsData = fpg.vistoms_add_json(function_order=function_order, graph_id=graphID, mpg=mpg)
                 # Save the graph in temp/tmp.kdms
-                fpg.save(os.path.join(UPLOAD_FOLDER, TEMP_FILE + '_' + graphID + '.kdms'),
+                fpg.save(os.path.join(upload_folder, TEMP_FILE + '_' + graphID + '.kdms'),
                          file_type='kdms', graph_check_critical=False, mpg=mpg)
                 return newVistomsData
 
@@ -1068,10 +1127,14 @@ def interface(debug=True, tempdir=None):
             nodeList = request.form['nodeList'].split(',')
             function_order = request.form['currentorder'].split(',')
 
+            # Load upload folder based on session
+            sessionID = request.form['sessionID']
+            upload_folder = UPLOAD_FOLDERS[sessionID]
+
             # Save previous graph as backup before making the changes
-            savePreviousGraph(graphID)
+            savePreviousGraph(graphID, upload_folder)
 
-            path = UPLOAD_FOLDER
+            path = upload_folder
             graphFileName = TEMP_FILE + '_' + graphID + '.kdms'
             mpgFileName = TEMP_FILE + '_' + graphID + '_mpg.kdms'
             if os.path.exists(os.path.join(path, mpgFileName)):
@@ -1095,7 +1158,7 @@ def interface(debug=True, tempdir=None):
                 # Add the graph with the updated function order to VISTOMS
                 newVistomsData = fpg.vistoms_add_json(function_order=function_order, graph_id=graphID, mpg=mpg)
                 # Save the graph in temp/tmp.kdms
-                fpg.save(os.path.join(UPLOAD_FOLDER, TEMP_FILE + '_' + graphID + '.kdms'),
+                fpg.save(os.path.join(upload_folder, TEMP_FILE + '_' + graphID + '.kdms'),
                          file_type='kdms', graph_check_critical=False, mpg=mpg)
                 return newVistomsData
 
@@ -1116,10 +1179,14 @@ def interface(debug=True, tempdir=None):
             graphID = request.form['graphID']
             method = request.form['sortingMethod']
 
+            # Load upload folder based on session
+            sessionID = request.form['sessionID']
+            upload_folder = UPLOAD_FOLDERS[sessionID]
+
             # Save previous graph as backup before making the changes
-            savePreviousGraph(graphID)
+            savePreviousGraph(graphID, upload_folder)
 
-            path = UPLOAD_FOLDER
+            path = upload_folder
             graphFileName = TEMP_FILE + '_' + graphID + '.kdms'
             mpgFileName = TEMP_FILE + '_' + graphID + '_mpg.kdms'
             if os.path.exists(os.path.join(path, mpgFileName)):
@@ -1143,7 +1210,7 @@ def interface(debug=True, tempdir=None):
                     fpg.add_function_problem_roles()
 
                 # Save the graph in temp/tmp.kdms
-                fpg.save(os.path.join(UPLOAD_FOLDER, TEMP_FILE + '_' + graphID + '.kdms'),
+                fpg.save(os.path.join(upload_folder, TEMP_FILE + '_' + graphID + '.kdms'),
                          file_type='kdms', graph_check_critical=False, mpg=mpg)
 
                 # Add the graph with the updated function order to VISTOMS
@@ -1167,10 +1234,14 @@ def interface(debug=True, tempdir=None):
             graphID = request.form['graphID']
             function_order = request.form['currentOrder'].split(',')
 
+            # Load upload folder based on session
+            sessionID = request.form['sessionID']
+            upload_folder = UPLOAD_FOLDERS[sessionID]
+
             # Save previous graph as backup before making the changes
-            savePreviousGraph(graphID)
+            savePreviousGraph(graphID, upload_folder)
 
-            path = UPLOAD_FOLDER
+            path = upload_folder
             graphFileName = TEMP_FILE + '_' + graphID + '.kdms'
             mpgFileName = TEMP_FILE + '_' + graphID + '_mpg.kdms'
             if os.path.exists(os.path.join(path, mpgFileName)):
@@ -1193,7 +1264,7 @@ def interface(debug=True, tempdir=None):
                 # Add the graph with the updated function order to VISTOMS
                 newVistomsData = fpg.vistoms_add_json(function_order=function_order, graph_id=graphID, mpg=mpg)
                 # Save the graph in temp/tmp.kdms
-                fpg.save(os.path.join(UPLOAD_FOLDER, TEMP_FILE + '_' + graphID + '.kdms'),
+                fpg.save(os.path.join(upload_folder, TEMP_FILE + '_' + graphID + '.kdms'),
                          file_type='kdms', graph_check_critical=False, mpg=mpg)
                 return newVistomsData
 
@@ -1213,10 +1284,14 @@ def interface(debug=True, tempdir=None):
             graphID = request.form['graphID']
             function_order = request.form['currentOrder'].split(',')
 
+            # Load upload folder based on session
+            sessionID = request.form['sessionID']
+            upload_folder = UPLOAD_FOLDERS[sessionID]
+
             # Save previous graph as backup before making the changes
-            savePreviousGraph(graphID)
+            savePreviousGraph(graphID, upload_folder)
 
-            path = UPLOAD_FOLDER
+            path = upload_folder
             graphFileName = TEMP_FILE + '_' + graphID + '.kdms'
             mpgFileName = TEMP_FILE + '_' + graphID + '_mpg.kdms'
             if os.path.exists(os.path.join(path, mpgFileName)):
@@ -1238,7 +1313,7 @@ def interface(debug=True, tempdir=None):
                 # Add the graph with the updated function order to VISTOMS
                 newVistomsData = fpg.vistoms_add_json(function_order=function_order, graph_id=graphID, mpg=mpg)
                 # Save the graph in temp/tmp.kdms
-                fpg.save(os.path.join(UPLOAD_FOLDER, TEMP_FILE + '_' + graphID + '.kdms'),
+                fpg.save(os.path.join(upload_folder, TEMP_FILE + '_' + graphID + '.kdms'),
                          file_type='kdms', graph_check_critical=False, mpg=mpg)
                 return newVistomsData
 
@@ -1266,10 +1341,14 @@ def interface(debug=True, tempdir=None):
             lowerBound = float(request.form['lowerBound'])
             nominalValue = float(request.form['nominalValue'])
 
+            # Load upload folder based on session
+            sessionID = request.form['sessionID']
+            upload_folder = UPLOAD_FOLDERS[sessionID]
+
             # Save previous graph as backup before making the changes
-            savePreviousGraph(graphID)
+            savePreviousGraph(graphID, upload_folder)
 
-            path = UPLOAD_FOLDER
+            path = upload_folder
             graphFileName = TEMP_FILE + '_' + graphID + '.kdms'
             mpgFileName = TEMP_FILE + '_' + graphID + '_mpg.kdms'
             if os.path.exists(os.path.join(path, mpgFileName)):
@@ -1298,7 +1377,7 @@ def interface(debug=True, tempdir=None):
             # Add the graph with the updated function order to VISTOMS
             newVistomsData = fpg.vistoms_add_json(function_order=function_order, graph_id=graphID, mpg=mpg)
             # Save the graph in temp/tmp.kdms
-            fpg.save(os.path.join(UPLOAD_FOLDER, TEMP_FILE + '_' + graphID + '.kdms'), file_type='kdms',
+            fpg.save(os.path.join(upload_folder, TEMP_FILE + '_' + graphID + '.kdms'), file_type='kdms',
                      graph_check_critical=False, mpg=mpg)
 
             return newVistomsData
@@ -1320,10 +1399,14 @@ def interface(debug=True, tempdir=None):
             function_order = request.form['currentOrder'].split(',')
             xPath = request.form['xPath']
 
+            # Load upload folder based on session
+            sessionID = request.form['sessionID']
+            upload_folder = UPLOAD_FOLDERS[sessionID]
+
             # Save previous graph as backup before making the changes
-            savePreviousGraph(graphID)
+            savePreviousGraph(graphID, upload_folder)
 
-            path = UPLOAD_FOLDER
+            path = upload_folder
             graphFileName = TEMP_FILE + '_' + graphID + '.kdms'
             mpgFileName = TEMP_FILE + '_' + graphID + '_mpg.kdms'
             if os.path.exists(os.path.join(path, mpgFileName)):
@@ -1342,7 +1425,7 @@ def interface(debug=True, tempdir=None):
             # Add the graph with the updated function order to VISTOMS
             newVistomsData = fpg.vistoms_add_json(function_order=function_order, graph_id=graphID, mpg=mpg)
             # Save the graph in temp/tmp.kdms
-            fpg.save(os.path.join(UPLOAD_FOLDER, TEMP_FILE + '_' + graphID + '.kdms'), file_type='kdms',
+            fpg.save(os.path.join(upload_folder, TEMP_FILE + '_' + graphID + '.kdms'), file_type='kdms',
                      graph_check_critical=False, mpg=mpg)
 
             return newVistomsData
@@ -1368,10 +1451,14 @@ def interface(debug=True, tempdir=None):
             else:
                 cleanUp = False
 
+            # Load upload folder based on session
+            sessionID = request.form['sessionID']
+            upload_folder = UPLOAD_FOLDERS[sessionID]
+
             # Save previous graph as backup before making the changes
-            savePreviousGraph(graphID)
+            savePreviousGraph(graphID, upload_folder)
 
-            path = UPLOAD_FOLDER
+            path = upload_folder
             graphFileName = TEMP_FILE + '_' + graphID + '.kdms'
             mpgFileName = TEMP_FILE + '_' + graphID + '_mpg.kdms'
             if os.path.exists(os.path.join(path, mpgFileName)):
@@ -1412,7 +1499,7 @@ def interface(debug=True, tempdir=None):
                 # Add the graph with the updated function order to VISTOMS
                 newVistomsData = fpg.vistoms_add_json(function_order=function_order, graph_id=graphID, mpg=mpg)
                 # Save the graph in temp/tmp.kdms
-                fpg.save(os.path.join(UPLOAD_FOLDER, TEMP_FILE + '_' + graphID + '.kdms'),
+                fpg.save(os.path.join(upload_folder, TEMP_FILE + '_' + graphID + '.kdms'),
                          file_type='kdms', graph_check_critical=False, mpg=mpg)
                 return newVistomsData
 
@@ -1439,12 +1526,16 @@ def interface(debug=True, tempdir=None):
             newGraphID = request.form['newGraphID']
             newGraphName = request.form['newGraphName']
 
+            # Load upload folder based on session
+            sessionID = request.form['sessionID']
+            upload_folder = UPLOAD_FOLDERS[sessionID]
+
             # Save previous graph as backup before making the changes
-            savePreviousGraph(graphID)
+            savePreviousGraph(graphID, upload_folder)
 
             newFileName = TEMP_FILE + '_' + newGraphID + '.kdms'
 
-            path = UPLOAD_FOLDER
+            path = upload_folder
             graphFileName = TEMP_FILE + '_' + graphID + '.kdms'
             mpgFileName = TEMP_FILE + '_' + graphID + '_mpg.kdms'
             if os.path.exists(os.path.join(path, mpgFileName)):
@@ -1474,7 +1565,7 @@ def interface(debug=True, tempdir=None):
                 # Add the graph with the updated function order to VISTOMS
                 newVistomsData = mdg.vistoms_add_json(function_order=functionOrder, graph_id=newGraphID, mpg=mpg)
                 # Save the graph in temp/tmp.kdms
-                mdg.save(os.path.join(UPLOAD_FOLDER, newFileName), file_type="kdms", graph_check_critical=False,
+                mdg.save(os.path.join(upload_folder, newFileName), file_type="kdms", graph_check_critical=False,
                          mpg=mpg)
 
                 return newVistomsData
@@ -1504,10 +1595,14 @@ def interface(debug=True, tempdir=None):
             else:
                 allow_unconverged_couplings = False
 
+            # Load upload folder based on session
+            sessionID = request.form['sessionID']
+            upload_folder = UPLOAD_FOLDERS[sessionID]
+
             # Save previous graph as backup before making the changes
-            savePreviousGraph(graphID)
+            savePreviousGraph(graphID, upload_folder)
 
-            path = UPLOAD_FOLDER
+            path = upload_folder
             graphFileName = TEMP_FILE + '_' + graphID + '.kdms'
             mpgFileName = TEMP_FILE + '_' + graphID + '_mpg.kdms'
             if os.path.exists(os.path.join(path, mpgFileName)):
@@ -1567,7 +1662,7 @@ def interface(debug=True, tempdir=None):
                 # Add the graph with the updated function order to VISTOMS
                 newVistomsData = mdg.vistoms_add_json(graph_id=graphID, mpg=mpg)
                 # Save the graph in temp/tmp.kdms
-                mdg.save(os.path.join(UPLOAD_FOLDER, TEMP_FILE + '_' + graphID + '.kdms'),
+                mdg.save(os.path.join(upload_folder, TEMP_FILE + '_' + graphID + '.kdms'),
                          file_type='kdms', graph_check_critical=False, mpg=mpg)
                 return newVistomsData
 
diff --git a/kadmos/vistoms/templates/VISTOMS_sessions.html b/kadmos/vistoms/templates/VISTOMS_sessions.html
new file mode 100644
index 0000000000000000000000000000000000000000..b370cbbe9ef1e4b583f9b88c654f7c264ae26996
--- /dev/null
+++ b/kadmos/vistoms/templates/VISTOMS_sessions.html
@@ -0,0 +1,27029 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<meta name="viewport" content="width=device-width, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no">
+<meta name="format-detection" content="telephone=no">
+<meta name="apple-mobile-web-app-capable" content="yes">
+<meta name="apple-mobile-web-app-status-bar-style" content="default">
+<head">
+    <meta charset="utf-8">
+    <title>VISTOMS (Visualization Tool for MDO Systems)</title>
+    <!--Include this css file in the <head> tag -->
+    <link rel="stylesheet" href="static/lib/lobipanel/lib/jquery-ui.min.css"/>
+    <link rel="stylesheet" href="static/lib/lobipanel/bootstrap/dist/css/bootstrap.min.css"/>
+    <link rel="stylesheet" href="static/lib/lobipanel/lib/highlight/github.css"/>
+    <link rel="stylesheet" href="static/lib/lobipanel/demo/documentation.css"/>
+    <link rel="stylesheet" href="static/lib/lobipanel/dist/css/lobipanel.min.css"/>
+    <link rel="stylesheet" href="static/lib/lobipanel/demo/demo.css"/>
+    <link rel="stylesheet" href="static/lib/style.css"/>
+</head>
+<body>
+    <!--Include these script files in the <head> or <body> tag-->
+    <script src="static/lib/lobipanel/lib/jquery.3.20.min.js"></script>
+    <script src="static/lib/lobipanel/lib/jquery-ui.min.js"></script>
+    <script src="static/lib/lobipanel/lib/jquery.ui.touch-punch.min.js"></script>
+    <script src="static/lib/lobipanel/bootstrap/dist/js/bootstrap.min.js"></script>
+    <script src="static/lib/lobipanel/bootstrap/dist/js/bootbox.min.js"></script>
+    <script src="static/lib/lobipanel/lib/highlight/highlight.pack.js"></script>
+    <script src="static/lib/lobipanel/dist/js/lobipanel.min.js"></script>
+    <script src="static/lib/vkbeautify/vkbeautify.js"></script>
+    <script src="static/lib/bowser/bowser.js"></script>
+    <script>           
+			var sessionID = {{ sessionID|tojson }};
+            if (bowser.name=="Internet Explorer")
+			{
+                alert("OOPS! VISTOMS unfortunately does not work properly on " + bowser.name + ". Please use a different browser to see its awesome visualization features!")
+			}
+            
+            
+            //aigner: Move to front function
+			d3.selection.prototype.moveToFront = function() {  
+			  return this.each(function(){
+				this.parentNode.appendChild(this);
+			  });
+			};
+			//aigner: Move to back function
+			d3.selection.prototype.moveToBack = function() {  
+				return this.each(function() { 
+					var firstChild = this.parentNode.firstChild; 
+					if (firstChild) { 
+						this.parentNode.insertBefore(this, firstChild); 
+					} 
+				});
+			};
+            
+            /**
+             * Returns a random integer between min (inclusive) and max (inclusive)
+             * Using Math.round() will give you a non-uniform distribution!
+             */
+            function getRandomInt(min, max) {
+                return Math.floor(Math.random() * (max - min + 1)) + min;
+            }
+
+            
+            //aigner: General functions communicating with the user via bootbox after kadmos requests
+            //##############################################################
+            function kadmosErrorMessage(content)
+            {
+                var message="";
+                if (content.message.responseText){message = content.message.responseText}
+                else if (content.message == ""){message = "ERROR: Something went wrong in KADMOS!"}
+                else {message = content.message}
+                bootbox.hideAll();
+                bootbox.dialog({
+                title: content.title,
+                message: message,
+                buttons : { cancel:
+                            {
+                                label: "OK",
+                                className: 'btn-default',
+                                callback: function(){}
+                            }
+                          }
+                });
+            }
+            
+            function kadmosSuccessMessage(content)
+            {
+                bootbox.hideAll();
+                bootbox.dialog(
+                {
+                    title: content.title,
+                    message: content.message,
+                    buttons : { cancel:
+                                {
+                                    label: "OK",
+                                    callback: function(){}
+                                }
+                              }
+                });
+            }
+            
+            function kadmosHavePatience(anXhr, content)
+            {
+                bootbox.hideAll();
+                bootbox.dialog({
+                    title: content.title,
+                    message: content.message,
+                    buttons : { cancel:
+                            {
+                                label: "Cancel request",
+                                className: 'btn-danger',
+                                callback: function () {
+                                    anXhr.abort()
+                                    bootbox.hideAll();
+                                    bootbox.dialog(
+                                    {
+                                        title: content.title,
+                                        message: "<b>KADMOS request aborted!</b> <p>CAUTION: Python functions could still be running in the background!</p>",
+                                        buttons : { cancel:
+                                                    {
+                                                        label: "OK",
+                                                        className: 'btn-danger',
+                                                        callback: function(){}
+                                                    }
+                                                  }
+                                    });
+                                }
+                            }
+                        }
+                });
+            }
+            //##############################################################
+             
+            //aigner: Function to filter a list with a search
+            //##############################################################
+            function filterSearch() 
+            {
+                var input, filter, table, tr, td, i;
+                input = document.getElementById("myInput");
+                filter = input.value.toUpperCase();
+                table = document.getElementById("myTable");
+                tr = table.getElementsByTagName("tr");
+                for (i = 0; i < tr.length; i++) 
+                {
+                    td = tr[i].getElementsByTagName("td")[0];
+                    if (td) 
+                    {
+                            if (td.innerHTML.toUpperCase().indexOf(filter) > -1) 
+                            {
+                                tr[i].style.display = "";
+                            } 
+                            else 
+                            {
+                                tr[i].style.display = "none";
+                            }
+                    }          
+                }
+            }
+            //##############################################################
+            
+            //aigner: General functions for tree layout
+            //##############################################################
+            //Function to prune the tree according to list of xPaths that are actually there
+            function prune_tree(aPipeData,aTreeData,direction="none")
+            {
+                //First, clean up pipeData if necessary
+                var cleanPipeData = aPipeData.split(",")
+                var index = cleanPipeData.indexOf("");
+                if (index > -1) {cleanPipeData.splice(index, 1);}
+                var firstEl = cleanPipeData[0].split("/")[1]                             
+                
+                for (var i=0; i < aTreeData.length; ++i) 
+                {
+                    var treeElement = aTreeData[i];
+                    var relevant_xPath = "/"+firstEl+"/"+treeElement.xPath.split("/"+firstEl+"/")[1]
+                    if(cleanPipeData.indexOf(relevant_xPath)<=-1)
+                    {
+                        aTreeData.splice(i,1);
+                        i--;
+                    }
+                    else
+                    {
+                        if (direction=="in")
+                        {
+                            aTreeData[i].pipeLineIn = true;
+                        }
+                        else if (direction=="out")
+                        {
+                            aTreeData[i].pipeLineOut = true;
+                        }
+                    }
+                }
+            }
+            
+            function childExists(name, children)
+            {
+                var exists = false
+                children.forEach(function(child)
+                {
+                    if (child.name == name)
+                    {
+                        exists = true;
+                    }
+                })
+                return exists;
+            }
+            
+            //Function to create the tree layout by appending children to the layout
+            function appendChildren(anElement, aParent, xPath_list)
+            {
+                if (xPath_list.length > 0)
+                {
+                    //If element has no children yet, initialize children array
+                    if (!aParent.children){aParent.children = [];}
+                    //Create a new child element, if it does not exist yet
+                    if (!childExists(xPath_list[0], aParent.children))
+                    {
+                        //Create a new child object
+                        var newChild = {level: aParent.level+1, name: xPath_list[0], type: "variable", xPath: aParent.xPath+"/"+xPath_list[0]};
+                        if (anElement.pipeLineIn){newChild.pipeLineIn=true}
+                        if (anElement.pipeLineOut){newChild.pipeLineOut=true}
+                        aParent.children.push(newChild);
+                    }
+                    aParent.children.forEach(function(aChild)
+                    {
+                        if (xPath_list[0] == aChild.name)
+                        {
+                            let newXPath_list = JSON.parse(JSON.stringify(xPath_list));
+                            newXPath_list.shift();
+                            appendChildren(anElement, aChild, newXPath_list)
+                        }
+                    })
+                }
+                else
+                {
+                    aParent.value = anElement.value;
+                }
+            }
+            
+            //function builds tree layout from xPaths of the elements
+            function buildTree(root, aTreeData)
+            {
+                aTreeData.forEach(function(treeElement)
+                {
+                    var xPath_split = treeElement.xPath.split("/");
+                    var index = xPath_split.indexOf("");
+                    if (index > -1) {xPath_split.splice(index, 1);}
+                    root.level = 0
+                    root.name = xPath_split[0]
+                    root.xPath = "/"+xPath_split[0]
+                    <!-- console.log("####################") -->
+                    <!-- console.log(treeElement.xPath) -->
+                    let newXPath_split = JSON.parse(JSON.stringify(xPath_split));
+                    newXPath_split.shift();
+                    appendChildren(treeElement, root, newXPath_split)
+                    <!-- console.log("DONE!") -->
+                    <!-- console.log("####################") -->
+                })
+            }
+            //##############################################################
+             
+             
+			function makeKadmosMenu(data, initial=false)
+			{
+                //First of all, clear everything if it is already there
+                var visPackDiv = d3.select(".visPackDiv");
+                if(visPackDiv){visPackDiv.remove()};
+                var navigationBarDiv = d3.select(".navigationBarDiv");
+                if(navigationBarDiv){navigationBarDiv.remove()};
+                
+				var imageWidth = 200;
+				var imageHeight = 150;
+				var padding = 10;
+				var rectHeight = 70;
+				var imgSize = 40;
+				visPackDiv = d3.select("body").append("div").attr("class","visPackDiv");
+				var visPackSvg = visPackDiv.append("svg")
+					.attr("class","visPackSvg")
+					.attr("width",imageWidth*5+40)
+					.attr("height",imageHeight+40)
+					.attr("transform", "translate("
+					  + String(10) + "," + String(10) + ")")			  
+				
+				var visPackFrame = visPackSvg.append("rect")
+					.attr("width",imageWidth*5+12)
+					.attr("height",imageHeight)
+					.attr("fill", "none")
+				
+				var imgs = visPackSvg.selectAll("image1").data([0]);
+					imgs.enter()
+					.append("svg:image")
+					.attr("x",5)
+					.attr("xlink:href", fileReference.AGILE_Logo)
+					.attr("width", imageWidth)
+					.attr("height", imageHeight)
+					.attr("position", "relative")
+					
+				var imgs = visPackSvg.selectAll("image2").data([0]);
+					imgs.enter()
+					.append("svg:image")
+					.attr("x",210)
+					.attr("y",-5)
+					.attr("xlink:href", fileReference.VISTOMS_Label)
+					.attr("width", "180pt")
+					.attr("height", "70pt")
+					
+					
+					
+				//Set general offset for Buttons, acknowledgements and so on
+				var offset_tmp = 645;	
+				
+				
+				//aigner: Make Acknowledgments, Help and Home buttons
+				//##########################################################
+				visPackSvg.append("rect")
+				.attr("transform", "translate("+ String(offset_tmp+17) + "," + String(0) + ")")
+				.attr("fill", "#555555")
+				.attr("width", 186)
+				.attr("height", 40)
+				
+				function makeButton(anId, aText,aPicFile, anOffset, aScale, picX, picY)
+				{
+					var buttonGroup = visPackSvg.append("a").classed("buttonGroup",true)
+					buttonGroup
+						.attr("class",anId)
+						.append("svg:title").text(aText)
+					var polygon = buttonGroup.append("polygon").classed("button",true)
+						.attr("points", "30,15 22.5,28.0 7.5,28 0,15 7.5,2 22.5,2")
+						.attr("transform", "translate("+ String(anOffset) + "," + String(2) + ") scale(1.2)")
+					buttonGroup.append("image")
+						.attr("xlink:href",aPicFile)
+						.attr("height",50)
+						.attr("width",50)
+						.attr("transform", "translate("+ String(anOffset+picX) + "," + String(picY) + ") scale("+aScale+")")
+					buttonGroup
+						.on("mouseover", function()
+						{
+							polygon.style("fill","#3399FF")
+							d3.select(this).style("cursor", "pointer")
+						})
+						.on("mouseleave", function()
+						{
+							polygon.style("fill","#555555")
+						})
+				}
+				///Home button
+				var distance = 45;
+				var currentOffset = offset_tmp+25;
+				makeButton("id_mainPage","Main Page",fileReference.Home, currentOffset, 0.45, 6.9,7.2);
+				d3.select(".id_mainPage").on("click",function()
+				{		
+					mainPage();
+				})
+				//help button
+				currentOffset+=distance;
+				makeButton("id_turorial","Tutorial",fileReference.Tutorial, currentOffset, 0.45, 6.8, 7.5);
+				d3.select(".id_turorial").on("click",function()
+				{			
+					tutorial();
+				})
+				//Contact button
+				currentOffset+=distance;
+				makeButton("id_contact","Contact the support team",fileReference.Contact, currentOffset, 0.45, 6.9, 9);
+				d3.select(".id_contact").on("click",function()
+				{				
+					sendMail("VISTOMS support");
+				})
+					
+				//Acknowledgements button
+				currentOffset+=distance;
+				makeButton("id_acknowledgements","Acknowledgements",fileReference.Acknowledgements, currentOffset, 0.45, 7, 8);
+				d3.select(".id_acknowledgements").on("click",function()
+				{
+					acknowledgements();
+				})
+				//##########################################################
+				
+                var navigationBarDiv = d3.select("body").append("div").attr("class","navigationBarDiv")
+                var ul = navigationBarDiv.append("ul")
+                navigationBarDiv.on("mouseover", function()
+                {
+                    d3.select(this).style("z-index","1300");
+                })
+                .on("mouseout", function()
+                {
+                    d3.select(this).style("z-index","");
+                })
+                var addButton_div = d3.select(".addButtonDiv")
+                if (addButton_div)
+                    addButton_div.remove();
+                    
+                
+                
+                
+                var tmpGraphsAvailable = false;
+				if (initial)
+                {
+                    var bootboxContent = {title: "VISTOMS start", message: '<p>Please be patient...</p>'};
+                    var xhr = $.ajax({
+                        type: 'POST',
+                        data: {'sessionID': sessionID},
+                        url: '/kadmosFindTempGraphs',
+                        success: function(result)
+                        {
+                            if (result.includes("ERROR:"))
+                            {
+                                bootboxContent.message = result
+                                kadmosErrorMessage(bootboxContent);
+                            }
+                            else
+                            {
+                                var dataArray = result;          
+                                for (var i = 0; i < dataArray.length; i++)
+                                {
+                                    if (data=="REP__GRAPH_DATA__REP")
+                                    {
+                                        data = {"graphs":[], "categories":""};
+                                    }
+                                    var data_tmp = JSON.parse(dataArray[i])
+                                    data.graphs.push(data_tmp.graphs[0]);
+                                    if (data.categories == [])
+                                    {
+                                        data.categories = data_tmp.categories;                                        
+                                    }
+                                    tmpGraphsAvailable = true;
+                                }
+                                
+                                
+                                if (tmpGraphsAvailable)
+                                {
+                                    bootboxContent.title = "VISTOMS ready"
+                                    bootboxContent.message = "KADMOS found already existing VISTOMS graphs. You can select them from the drop-down menu."
+                                    kadmosSuccessMessage(bootboxContent)
+                                }
+                                else {bootbox.hideAll();}
+                                
+                                //aigner: make dropwdown section for the multiple MDO graphs tzhat can be visualized
+                                makeViewButtons(data,"XDSM","xdsm");
+                                makeViewButtons(data,"Edge Bundles","edgeBundles");
+                                makeViewButtons(data,"Sankey Diagram","sankeyDiagram");
+                                //aigner: Add special button to open graphs from kdms or cmdows files
+                                addButton(data.graphs);
+                            }
+                        },
+                        error: function(result)
+                        {
+                            bootboxContent.message = result
+                            kadmosErrorMessage(bootboxContent);
+                        }
+                    });
+                    kadmosHavePatience(xhr, bootboxContent)
+                }
+                else
+                {
+                    //aigner: make dropwdown section for the multiple MDO graphs tzhat can be visualized
+                    makeViewButtons(data,"XDSM","xdsm");
+                    makeViewButtons(data,"Edge Bundles","edgeBundles");
+                    makeViewButtons(data,"Sankey Diagram","sankeyDiagram");
+                    //aigner: Add special button to open graphs from kdms or cmdows files
+                    addButton(data.graphs);
+                }
+                
+                
+                
+                
+				//aigner: make dropwdown section for the multiple MDO graphs tzhat can be visualized
+				//##########################################################           
+				function makeViewButtons(data,name, aView)
+				{
+                    var numberOfGraphs = 0;
+					var dropdown1 = ul.append("li")
+                        .on("mouseover", function()
+                        {
+                            d3.select(this).style("cursor", "default")
+                        })
+                       
+					dropdown1.append("a").text(name)
+					dropdown1.append("img").attr("src",fileReference.AGILE_Icon)
+						.attr("align","left")
+						.style("margin-left","6px")
+						.style("margin-right","0px")
+						.style("margin-top","10px")
+						.style("margin-bottom","6px")
+						.attr("height","42")
+						.attr("width","42")
+					var links = dropdown1.append("ul");             
+                    if (data=="REP__GRAPH_DATA__REP" && !tmpGraphsAvailable)
+                    {                  
+                        var linkLi = links.append("li");
+                        var link = linkLi.append("a")
+                            .style("font-style","Italic")
+                            .text("No graphs to inspect ...")
+                            .on("mouseover", function(){d3.select(this).style("cursor", "pointer")})
+                            .on("click", function(){
+                                    
+                                bootbox.hideAll();
+                                bootbox.dialog({
+                                    message: "No graph to inspect in VISTOMS yet! \nYou can add a graph by uploading a KDMS or CMDOWS file.",
+                                    buttons : { cancel:
+                                                {
+                                                    label: "OK",
+                                                    className: 'btn-danger',
+                                                    callback: function(){}
+                                                }
+                                              }
+                                });
+                            })
+                    }
+                    else
+                    {
+                        var graphs_tmp = data.graphs;
+                        for (var i=0; i < graphs_tmp.length; i++)
+                        {
+                            makeDropDown(data,graphs_tmp[i],aView,links)
+                            numberOfGraphs ++;
+                        }
+                    }
+                    
+                    
+				}
+                
+				function makeDropDown(theData,theGraph,theView,theLinks)
+				{
+					var linkLi = theLinks.append("li");
+					var name_tmp="";
+					if (theGraph.name){name_tmp=theGraph.name}
+					else{name_tmp="Graph " + theGraph.id}
+					var link = linkLi.append("a").text(name_tmp)
+						.text(name_tmp)
+						.on("mouseover", function(){d3.select(this).style("cursor", "pointer")})
+						.on("click", function()
+                        {
+							clearView();					
+							if (theView == "xdsm")
+                            {
+                                xdsm_script(theData,theGraph.id)
+                            }
+							else if (theView == "edgeBundles")
+                            {
+                                edgeBundles_script(theData,theGraph.id)
+                            }
+							else if (theView == "sankeyDiagram")
+                            {
+                                sankeyDiagram_script(theData,theGraph.id)
+                            }
+                        })
+				}
+				//##########################################################
+                
+                
+                //aigner: Add special button to open graphs from kdms or cmdows files
+                //##########################################################
+                function addButton(theGraphs)
+                {
+                    var newGraphID = '01';
+                    if (theGraphs)
+                    {
+                        theGraphs.forEach(function(graph) 
+                        {
+                            id_int = parseInt(graph.id)
+                            if (theGraphs.length < 100){newGraphID = "0" + String(id_int+1);}
+                            else{newGraphID = String(id_int+1);}
+                        })
+                    }
+                    
+                    var addButton_div = d3.select("body").append("div").attr("class","addButtonDiv")
+                    var addButtonPanel = addButton_div.append("div")
+                        .attr("class","panel panel-default")
+                        .attr("id","addButton")
+                        .style("display","inline-block")
+                        .style("min-width","200px")
+                        .style("margin-left","10px")
+                    addButtonPanel.append("div").attr("class","panel-heading text-center align-top")
+                        .style("background-color","#555555")
+                        .append("h3")
+                        .attr("class","panel-title")
+                        .style("font-family","Arial")
+                        .style("font-size","14pt")
+                        .style("color","white")
+                        .style("display","inline-block")
+                        .text("Add graph")
+                    var panelBody = addButtonPanel.append("div").attr("class","panel-body")
+                        .style("font-family","Arial")
+                        .style("font-size","8pt")
+                        .style("display","inline-block")
+                    
+                    
+                    var options = ["Choose...","KDMS file(s)", "CMDOWS file", "Database"];
+
+                    var select = panelBody.append('select')
+                        .attr('id','addselect')
+                        .attr('class','select')
+                        .on('change',onchange)
+
+                    var options = select.selectAll('option')
+                        .data(options).enter()
+                        .append('option')
+                            .text(function (d) { return d; });
+                    
+                    
+                    var form = panelBody.append("form").attr("id","addForm")
+                        .attr("method","post")
+                        .attr("enctype","multipart/form-data")
+                    var label = form.append("label")
+                    var fileText;
+                    var file;
+                    var submit;
+                    var selectValue;
+                    
+                    function onchange() {
+                        selectValue = d3.select('#addselect').property('value')
+                        if (selectValue == "KDMS file(s)")
+                        {
+                            if (file){
+                                fileText.remove();
+                                file.remove();
+                            }
+                            if (submit){submit.remove();}
+                            fileText = label.append("text")
+                                .style("font-family","Arial")
+                                .style("font-size","12pt")
+                                .text("Choose KDMS files (max. 2: 1 data graph & 1 process graph)")
+                            file = label.append("input").attr("type","file").attr("name","file[]").attr("multiple","")
+                            submit = label.append("input").attr("type","submit").attr("value","Submit");
+                        }
+                        else if (selectValue == "CMDOWS file")
+                        {             
+                            if (file){
+                                fileText.remove();
+                                file.remove();
+                            }
+                            if (submit){submit.remove();}
+                            fileText = label.append("text")
+                                .style("font-family","Arial")
+                                .style("font-size","12pt")
+                                .text("Choose any CMDOWS file")
+                            file = label.append("input").attr("type","file").attr("name","file[]")
+                            submit = label.append("input").attr("type","submit").attr("value","Submit");
+                        }
+                        else if (selectValue == "Database")
+                        {             
+                            if (file){
+                                fileText.remove();
+                                file.remove();
+                            }
+                            if (submit){submit.remove();}
+                            fileText = label.append("text")
+                                .style("font-family","Arial")
+                                .style("font-size","12pt")
+                                .text("Choose any zip file containing a database")
+                            file = label.append("input").attr("type","file").attr("name","file[]")
+                            submit = label.append("input").attr("type","submit").attr("value","Submit");
+                        }
+                        else{}
+                    };
+                    
+                    $('#addForm').on('submit',function(event){
+                        event.preventDefault();
+                        //aigner: Uploading files for KADMOS
+                        formData = new FormData($('form')[0]);
+                        formData.append('newGraphID', newGraphID);
+                        formData.append('fileType',selectValue);
+                        formData.append('sessionID',sessionID)
+                       
+                     
+                        
+                        //aigner: Upload file to VISTOMS and inspect it
+                        //##########################################################
+                        var bootboxContent = {title: "Upload file to VISTOMS", message: '<p>Please be patient...</p>'};
+                        var xhr = $.ajax({
+                            type: 'POST',
+                            url: '/kadmosUploadFile',
+                            data: formData,
+                            processData: false,
+                            contentType: false,
+                            success: function(result)
+                            {
+                                if (result.includes("ERROR:"))
+                                {
+                                    
+                                    
+                                    bootboxContent.message = result
+                                    kadmosErrorMessage(bootboxContent);
+                                    
+                                    clearView();
+                                    makeKadmosMenu(data);
+                                    mainPage();
+                                }
+                                else
+                                {
+                                    var updatedData = {};
+                                    if (data != "REP__GRAPH_DATA__REP")
+                                    {
+                                        updatedData = data;
+                                        var graphData = JSON.parse(result);                                        
+                                        updatedData.graphs.push(graphData.graphs[0]);                                        
+                                    }
+                                    else
+                                    {
+                                        updatedData = JSON.parse(result);
+                                    }
+                                    
+                                    clearView();
+                                    makeKadmosMenu(updatedData);
+                                    mainPage();
+                                    
+                                    bootboxContent.message = "Success!"
+                                    kadmosSuccessMessage(bootboxContent)
+                                    
+                                }
+                            },
+                            error: function(result)
+                            {
+                                bootboxContent.message = result
+                                kadmosErrorMessage(bootboxContent);
+                            }
+                        });
+                        kadmosHavePatience(xhr, bootboxContent)
+                        //##########################################################
+                    });
+                    
+                    if (theGraphs)
+                    {
+                        var saveButtonPanel = addButton_div.append("div")
+                            .attr("class","panel panel-default")
+                            .attr("id","saveButton")
+                            .style("display","inline-block")
+                            .style("min-width","200px")
+                            .style("margin-left","10px")
+                        saveButtonPanel.append("div").attr("class","panel-heading text-center align-top")
+                            .style("background-color","#555555")
+                            .append("h3")
+                            .attr("class","panel-title")
+                            .style("font-family","Arial")
+                            .style("font-size","14pt")
+                            .style("color","white")
+                            .style("display","inline-block")
+                            .text("Save all graphs")
+                        var savepanelBody = saveButtonPanel.append("div").attr("class","panel-body")
+                            .style("font-family","Arial")
+                            .style("font-size","8pt")
+                            .style("display","inline-block")
+                        
+                        
+                        var options = ["Choose...","KDMS files", "CMDOWS files"];
+
+                        var saveselect = savepanelBody.append('select')
+                            .attr('id','saveselect')
+                            .attr('class','select')
+                            .on('change',onchange)
+
+                        var options = saveselect.selectAll('option')
+                            .data(options).enter()
+                            .append('option')
+                                .text(function (d) { return d; });
+                        
+                        
+                        var saveform = savepanelBody.append("form").attr("id","saveForm")
+                            .attr("method","post")
+                            .attr("enctype","multipart/form-data")
+                        var savelabel = saveform.append("label")
+                        var saveSubmit;
+                        var selectValue;
+                        
+                        function onchange() {
+                            selectValue = d3.select('#saveselect').property('value')
+                            if (saveSubmit){saveSubmit.remove();}
+                            if (selectValue!="Choose...")
+                            {
+                                saveSubmit = savelabel.append("input").attr("type","submit").attr("value","Save");
+                            }
+                        };
+                        
+                        $('#saveForm').on('submit',function(event){
+                            event.preventDefault();
+                            //aigner: Uploading files for KADMOS
+                             bootbox.prompt(
+                            {
+                                title: "<p>The graphs will be downloaded to your computer</p>"
+                                      +"<p>Please type in the path of the directory</p>",
+                                value: "",
+                                placeholder: "path...",
+                                callback: function(path)
+                                {
+                                    if (path)
+                                    {
+                                        //##########################################################
+                                        var bootboxContent = {title: "Save all graphs", message: '<p>Please be patient...</p>'};
+                                        var xhr = $.ajax({
+                                            type: 'POST',
+                                            data: {'path': path, 'fileType': selectValue, 'sessionID': sessionID},
+                                            url: '/kadmosExportAllGraphs',
+                                            success: function(result)
+                                            {                            
+                                                if (result.includes("ERROR:"))
+                                                {
+                                                    bootboxContent.message = result
+                                                    kadmosErrorMessage(bootboxContent);
+                                                }
+                                                else
+                                                {
+                                                    bootboxContent.message = "Successfully downloaded the file(s) to <b>"+result+"</b>"
+                                                    kadmosSuccessMessage(bootboxContent);
+                                                }
+                                            },
+                                            error: function(result)
+                                            {
+                                                bootboxContent.message = result
+                                                kadmosErrorMessage(bootboxContent);
+                                            }
+                                            });
+                                        kadmosHavePatience(xhr, bootboxContent)
+                                        //##########################################################
+                                    }
+                                    
+                                }
+                            })
+                        });
+                    }
+                    d3.select("#mainPage").moveToFront()
+                }
+			}
+			//##########################################################
+
+
+			function getTextWidth(text, font) 
+			{
+				// re-use canvas object for better performance
+				var canvas = getTextWidth.canvas || (getTextWidth.canvas = document.createElement("canvas"));
+				var context = canvas.getContext("2d");
+				context.font = font;
+				var metrics = context.measureText(text);
+				return metrics.width;
+			}					
+
+
+			//#####################################################################//
+			function mainPage()
+			{	
+				clearView();
+				var introDiv = d3.select("body").append("div")
+					.attr("id","mainPage")
+					.classed("wordWrap",true)
+				
+				var theHeading = "Welcome to <b>VISTOMS</b>, the <b>VIS</b>ualization <b>TO</b>ol for <b>M</b>DO <b>S</b>ystems!\n";
+				introDiv.append("text")
+				.style("font-size","16pt")
+				.html(theHeading)
+				
+				var theText = "\nTo inspect an MDO system, go to one of the visualizations in the navigation bar (XDSM, Edge Bundles, or Sankey Diagram). Then select a graph from the dropdown menu.\n\nIf you need help with how to use the visualization package, there is a tutorial video available. Just click on the \"Tutorial\" symbol in the top right corner.";
+				introDiv.append("text").text(theText)
+				introDiv.append("text")
+					.style("font-size","8pt")
+					.html("\n\n\nCopyright 2016-2017 by Benedikt Aigner (RWTH Aachen) & Imco van Gent (TU Delft)")
+				
+				var introSvg = introDiv.append("svg")
+					.attr("width",500)
+					.attr("height",100)
+				var imgs = introSvg.selectAll("img").data([0]);
+					imgs.enter()
+					.append("svg:image")
+					.attr("xlink:href", fileReference.RWTH_Logo)
+					.attr("width", "150")
+					.attr("height", "70")
+					.on("mouseover", function(){d3.select(this).style("cursor", "pointer")})
+					.on("click",function(){window.open("https://www.rwth-aachen.de/", '_blank');} )
+				var imgs = introSvg.selectAll("img").data([0]);
+					imgs.enter()
+					.append("svg:image")
+					.attr("xlink:href", fileReference.TUDelft_Logo)
+					.attr("x", 175)
+					.attr("y", 5)
+					.attr("width", "105")
+					.attr("height", "50")
+					.on("mouseover", function(){d3.select(this).style("cursor", "pointer")})
+					.on("click",function(){window.open("https://www.tudelft.nl/en/", '_blank');} )
+
+			}
+			//#####################################################################//
+
+			//#####################################################################//
+			function acknowledgements()
+			{				
+				clearView();
+				var acknDiv = d3.select("body").append("div")
+					.attr("id","acknowledgements")
+					.classed("acknText", true)
+					.classed("wordWrap",true)
+				
+				var theHeading = "Acknowledgements";
+				acknDiv.append("text")
+				.style("font-size","16pt")
+				.html(theHeading)
+				
+				acknDiv.append("text")
+					.style("font-size","10pt")
+					.style("margin", "20px 10px")
+					.html("<br><br>Created by Benedikt Aigner and Imco van Gent for the "
+						+"<a href=\"http://www.agile-project.eu/\">AGILE Project</a> in 2016. This project has received funding from the European Union's Horizon 2020 research and innovation framework programme under grant agreement No 636202."
+						+"<br>"
+						+"<br>"
+						+"<b>VISTOMS was created using the following open source packages:</b>"
+						+"<br>"
+						+"<a href=\"https://d3js.org/\">D3.js</a> package &copy 2015 by Mike Bostock released under the <a href=\"https://opensource.org/licenses/BSD-3-Clause\">BSD license</a>"
+						+"<br>"
+						+"<a href=\"https://github.com/OneraHub/XDSMjs\">XDSM.js </a> package &copy 2016 by R&eacutemi Lafage released under the <a href=\"http://www.apache.org/licenses/LICENSE-2.0\">Apache License, Version 2.0</a>"
+						+"<br>"
+						+"<a href=\"https://github.com/Neilos/bihisankey\">BiHiSankey.js</a> package &copy 2015 by Neil Atkinson released under the <a href=\"https://opensource.org/licenses/MIT\">MIT License</a>"
+						+"<br>"
+						+"<br>"
+						+"<br>"
+						+"<font size=\"-2\">Rev. 07/31/2017</font>")
+			}
+			//#####################################################################//
+
+			//#####################################################################//
+			function tutorial()
+			{
+				var theButtons = 
+				{
+					cancel: {
+						label: "OK, got it!",
+						className: 'btn-danger',
+						callback: function(){}
+					},
+					Feedback: {
+						label: "Feedback",
+						className: 'btn-warning',
+						callback: function(){sendMail("VISTOMS feedback")}
+					},
+					Tutorial: {
+						label: "Tutorial",
+						className: 'btn-info',
+						callback: function(){showTutorialPage();}
+					}
+				}
+				
+				
+				function showTutorialPage()
+				{
+					clearView();
+					var tutorialDiv = d3.select("body").append("div")
+						.attr("id","tutorial")
+						.style("margin-top", "16px")
+						.style("font-size","16pt")
+						.style("margin", "20px 10px")
+						.style("color","#555555")
+					
+					var theHeading = "<b>VISTOMS Tutorial</b><br/><br/>";
+					tutorialDiv.append("text")
+					.style("font-size","16pt")
+					.html(theHeading)
+					
+					tutorialDiv.append("div")
+						.style("-webkit-overflow-scrolling", "touch")
+						.style("-webkit-text-size-adjust", "none")
+						.html("<video width=\"1000\" height=\"563\" controls>"
+							+"<source src=\"http://www.agile-project.eu/files/VISTOMS_Tutorial.mp4 \" type=\"video/mp4\">"
+							+"Your browser does not support the video tag."
+							+"</video>"
+							+"</div>")
+				}
+				
+				
+				if (!d3.select(".xdsmDiv").empty())
+				{
+                    bootbox.hideAll();
+					var dialog = bootbox.dialog(
+					{
+						title: 'XDSM View',
+						message: "<p><b>To interactively inspect the MDO system there are several options.</b></p>"
+								 +"<ol><li>With a right-click on an edge (rhomboids on the off-diagonal) you can take a closer look at the data processed between competences.</li>"
+								 +"<li>Click right on a competence (boxes on the diagonal) for more information, such as input/output data or a detailed tool description.</li>"
+								 +"<li>To view the full data model, go to the \"Data model\" box and select a variable categorization. </li></ol><br />"
+								 +"<p>To switch to another visualization (<i>Edge Bundles</i> or <i>Sankey Diagram</i>), go to the navigation bar and select a graph from the drop down menu.</p>"
+								 +"<p>If you need more information on how to use the visualization package, click on the \"Tutorial\" button below.</p>"
+								 +"<p><br/>Any questions or feedback? Contact the support team with the \"Feedback\" button below!</p>"
+						,
+						buttons : theButtons
+					});
+				}
+				else if(!d3.select(".edgeBundlesDiv").empty())
+				{
+                    bootbox.hideAll();
+					var dialog = bootbox.dialog({
+						title: 'Edge Bundles View',
+						message: "<p><b>To interactively inspect the MDO system there are several options.</b></p>"
+								 +"<ol><li>With a right-click on an edge (connecting lines between the competences) you can take a closer look at the data processed between those competences.</li>"
+								 +"<li>When you hover over one of the competences with the mouse, the respective input and output connections are highlighted. Input connections are highlighted in red, output connections in green.</li>"
+								 +"<li>Click right on a competence for more information, such as input/output data or a detailed tool description.</li>"
+								 +"<li>To view the full data modeldata model, go to the \"Data model\" box and select a variable categorization.</li></ol><br />"
+								 +"<p>To switch to another visualization (<i>Edge Bundles</i> or <i>Sankey Diagram</i>), go to the navigation bar and select a graph from the drop down menu.</p>"
+								 +"<p>If you need more information on how to use the visualization package, click on the \"Tutorial\" button below.</p>"
+								 +"<p><br/>Any questions or feedback? Contact the support team with the \"Feedback\" button below!</p>"
+						,
+						buttons: theButtons
+					})
+				}
+				else if(!d3.select(".sankeyDiagramDiv").empty())
+				{
+                    bootbox.hideAll();
+					var dialog = bootbox.dialog({
+						title: 'Sankey Diagram',
+						message: "<p><b>To interactively inspect the MDO system there are several options.</b></p>"
+								 +"<ol><li>When you hover over one of the competences with the mouse, the respective input and output connections are highlighted. Input connections are highlighted in red, output connections in green.</li>"
+								 +"<li> With a right-click on an edge (connecting arrows between the competences) you can take a closer look at the data processed between those competences.</li>"
+								 +"<li>Click right on a competence for more information, such as input/output data or a detailed tool description. You can also rearrange the layout by dragging the competences with the computer mouse.</li>"
+								 +"<li>To view the full data model, go to the \"Data model\" box and select a variable categorization.</li></ol><br />"
+								 +"<p>To switch to another visualization (<i>XDSM</i> or <i>Edge Bundles</i>), go to the navigation bar and select a graph from the drop down menu.</p>"
+								 +"<p>If you need more information on how to use the visualization package, click on the \"Tutorial\" button below.</p>"
+								 +"<p><br/>Any questions or feedback? Contact the support team with the \"Feedback\" button below!</p>"
+						,
+						buttons: theButtons
+					})
+				}
+				else
+				{
+					showTutorialPage();
+				}
+			}
+			//#####################################################################//
+			
+			//aigner: Send mail function
+			//#####################################################################//
+			function sendMail(mailText) 
+			{
+				var link = "mailto:support@agile-project.eu"
+				window.location.href = link;
+			}
+			//#####################################################################//
+			
+			//aigner: Load entire MDO data
+			//###############################################################################################################################################################################################################//
+			//#####################################################################//
+			//#####################################################################//
+			//@Imco: here the references to all files are done
+			var fileReference = {
+				Acknowledgements : "static/pictures/Acknowledgements.png",
+				AGILE_Icon : "static/pictures/AGILE_Icon.png",
+				AGILE_Logo : "static/pictures/AGILE_Logo.png",
+				Contact : "static/pictures/Contact.png",
+				Home: "static/pictures/Home.png",
+				RWTH_Logo : "static/pictures/RWTH_Logo.png",
+				TUDelft_Logo : "static/pictures/TUDelft_Logo.png",
+				Tutorial : "static/pictures/Tutorial.png",
+				VISTOMS_Label : "static/pictures/VISTOMS_Label.png",
+			}
+			
+			//@Imco: Here is the sellar problem example data
+			theData = "REP__GRAPH_DATA__REP"
+			function loadAllData(data)
+			{
+				makeKadmosMenu(data,true);
+				mainPage();
+			}
+			loadAllData(theData);
+			//#####################################################################//
+			//#####################################################################//
+			//###############################################################################################################################################################################################################//
+			
+			//aigner: Clear view function
+			//#####################################################################//
+			function clearView()
+			{
+				var visualizationScript = d3.select(".visualizationScript");
+				if (visualizationScript){visualizationScript.remove();}
+				var mainPage = document.getElementById("mainPage");
+				if (mainPage){mainPage.remove();}
+				var tutorial = document.getElementById("tutorial");
+				if (tutorial){tutorial.remove();}
+				var ackn = document.getElementById("acknowledgements");
+				if (ackn){ackn.remove();}
+				var xdsm = d3.select(".xdsmDiv");							
+				if (xdsm){xdsm.remove();}
+				var edgeBundles = d3.select(".edgeBundlesDiv");							
+				if (edgeBundles){edgeBundles.remove();}
+				var sankeyDiagram = d3.select(".sankeyDiagramDiv");
+				if (sankeyDiagram){sankeyDiagram.remove();}
+			}
+			//#####################################################################//
+		
+		function xdsm_script(data,graphID)
+		{
+			(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
+			// https://d3js.org Version 4.3.0. Copyright 2016 Mike Bostock.
+			(function (global, factory) {
+			  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+			  typeof define === 'function' && define.amd ? define(['exports'], factory) :
+			  (factory((global.d3 = global.d3 || {})));
+			}(this, (function (exports) { 'use strict';
+
+			var version = "4.3.0";
+
+			var ascending = function(a, b) {
+			  return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN;
+			};
+
+			var bisector = function(compare) {
+			  if (compare.length === 1) compare = ascendingComparator(compare);
+			  return {
+				left: function(a, x, lo, hi) {
+				  if (lo == null) lo = 0;
+				  if (hi == null) hi = a.length;
+				  while (lo < hi) {
+					var mid = lo + hi >>> 1;
+					if (compare(a[mid], x) < 0) lo = mid + 1;
+					else hi = mid;
+				  }
+				  return lo;
+				},
+				right: function(a, x, lo, hi) {
+				  if (lo == null) lo = 0;
+				  if (hi == null) hi = a.length;
+				  while (lo < hi) {
+					var mid = lo + hi >>> 1;
+					if (compare(a[mid], x) > 0) hi = mid;
+					else lo = mid + 1;
+				  }
+				  return lo;
+				}
+			  };
+			};
+
+			function ascendingComparator(f) {
+			  return function(d, x) {
+				return ascending(f(d), x);
+			  };
+			}
+
+			var ascendingBisect = bisector(ascending);
+			var bisectRight = ascendingBisect.right;
+			var bisectLeft = ascendingBisect.left;
+
+			var descending = function(a, b) {
+			  return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN;
+			};
+
+			var number = function(x) {
+			  return x === null ? NaN : +x;
+			};
+
+			var variance = function(array, f) {
+			  var n = array.length,
+				  m = 0,
+				  a,
+				  d,
+				  s = 0,
+				  i = -1,
+				  j = 0;
+
+			  if (f == null) {
+				while (++i < n) {
+				  if (!isNaN(a = number(array[i]))) {
+					d = a - m;
+					m += d / ++j;
+					s += d * (a - m);
+				  }
+				}
+			  }
+
+			  else {
+				while (++i < n) {
+				  if (!isNaN(a = number(f(array[i], i, array)))) {
+					d = a - m;
+					m += d / ++j;
+					s += d * (a - m);
+				  }
+				}
+			  }
+
+			  if (j > 1) return s / (j - 1);
+			};
+
+			var deviation = function(array, f) {
+			  var v = variance(array, f);
+			  return v ? Math.sqrt(v) : v;
+			};
+
+			var extent = function(array, f) {
+			  var i = -1,
+				  n = array.length,
+				  a,
+				  b,
+				  c;
+
+			  if (f == null) {
+				while (++i < n) if ((b = array[i]) != null && b >= b) { a = c = b; break; }
+				while (++i < n) if ((b = array[i]) != null) {
+				  if (a > b) a = b;
+				  if (c < b) c = b;
+				}
+			  }
+
+			  else {
+				while (++i < n) if ((b = f(array[i], i, array)) != null && b >= b) { a = c = b; break; }
+				while (++i < n) if ((b = f(array[i], i, array)) != null) {
+				  if (a > b) a = b;
+				  if (c < b) c = b;
+				}
+			  }
+
+			  return [a, c];
+			};
+
+			var array = Array.prototype;
+
+			var slice = array.slice;
+			var map = array.map;
+
+			var constant$1 = function(x) {
+			  return function() {
+				return x;
+			  };
+			};
+
+			var identity = function(x) {
+			  return x;
+			};
+
+			var range = function(start, stop, step) {
+			  start = +start, stop = +stop, step = (n = arguments.length) < 2 ? (stop = start, start = 0, 1) : n < 3 ? 1 : +step;
+
+			  var i = -1,
+				  n = Math.max(0, Math.ceil((stop - start) / step)) | 0,
+				  range = new Array(n);
+
+			  while (++i < n) {
+				range[i] = start + i * step;
+			  }
+
+			  return range;
+			};
+
+			var e10 = Math.sqrt(50);
+			var e5 = Math.sqrt(10);
+			var e2 = Math.sqrt(2);
+
+			var ticks = function(start, stop, count) {
+			  var step = tickStep(start, stop, count);
+			  return range(
+				Math.ceil(start / step) * step,
+				Math.floor(stop / step) * step + step / 2, // inclusive
+				step
+			  );
+			};
+
+			function tickStep(start, stop, count) {
+			  var step0 = Math.abs(stop - start) / Math.max(0, count),
+				  step1 = Math.pow(10, Math.floor(Math.log(step0) / Math.LN10)),
+				  error = step0 / step1;
+			  if (error >= e10) step1 *= 10;
+			  else if (error >= e5) step1 *= 5;
+			  else if (error >= e2) step1 *= 2;
+			  return stop < start ? -step1 : step1;
+			}
+
+			var sturges = function(values) {
+			  return Math.ceil(Math.log(values.length) / Math.LN2) + 1;
+			};
+
+			var histogram = function() {
+			  var value = identity,
+				  domain = extent,
+				  threshold = sturges;
+
+			  function histogram(data) {
+				var i,
+					n = data.length,
+					x,
+					values = new Array(n);
+
+				for (i = 0; i < n; ++i) {
+				  values[i] = value(data[i], i, data);
+				}
+
+				var xz = domain(values),
+					x0 = xz[0],
+					x1 = xz[1],
+					tz = threshold(values, x0, x1);
+
+				// Convert number of thresholds into uniform thresholds.
+				if (!Array.isArray(tz)) tz = ticks(x0, x1, tz);
+
+				// Remove any thresholds outside the domain.
+				var m = tz.length;
+				while (tz[0] <= x0) tz.shift(), --m;
+				while (tz[m - 1] >= x1) tz.pop(), --m;
+
+				var bins = new Array(m + 1),
+					bin;
+
+				// Initialize bins.
+				for (i = 0; i <= m; ++i) {
+				  bin = bins[i] = [];
+				  bin.x0 = i > 0 ? tz[i - 1] : x0;
+				  bin.x1 = i < m ? tz[i] : x1;
+				}
+
+				// Assign data to bins by value, ignoring any outside the domain.
+				for (i = 0; i < n; ++i) {
+				  x = values[i];
+				  if (x0 <= x && x <= x1) {
+					bins[bisectRight(tz, x, 0, m)].push(data[i]);
+				  }
+				}
+
+				return bins;
+			  }
+
+			  histogram.value = function(_) {
+				return arguments.length ? (value = typeof _ === "function" ? _ : constant$1(_), histogram) : value;
+			  };
+
+			  histogram.domain = function(_) {
+				return arguments.length ? (domain = typeof _ === "function" ? _ : constant$1([_[0], _[1]]), histogram) : domain;
+			  };
+
+			  histogram.thresholds = function(_) {
+				return arguments.length ? (threshold = typeof _ === "function" ? _ : Array.isArray(_) ? constant$1(slice.call(_)) : constant$1(_), histogram) : threshold;
+			  };
+
+			  return histogram;
+			};
+
+			var threshold = function(array, p, f) {
+			  if (f == null) f = number;
+			  if (!(n = array.length)) return;
+			  if ((p = +p) <= 0 || n < 2) return +f(array[0], 0, array);
+			  if (p >= 1) return +f(array[n - 1], n - 1, array);
+			  var n,
+				  h = (n - 1) * p,
+				  i = Math.floor(h),
+				  a = +f(array[i], i, array),
+				  b = +f(array[i + 1], i + 1, array);
+			  return a + (b - a) * (h - i);
+			};
+
+			var freedmanDiaconis = function(values, min, max) {
+			  values = map.call(values, number).sort(ascending);
+			  return Math.ceil((max - min) / (2 * (threshold(values, 0.75) - threshold(values, 0.25)) * Math.pow(values.length, -1 / 3)));
+			};
+
+			var scott = function(values, min, max) {
+			  return Math.ceil((max - min) / (3.5 * deviation(values) * Math.pow(values.length, -1 / 3)));
+			};
+
+			var max = function(array, f) {
+			  var i = -1,
+				  n = array.length,
+				  a,
+				  b;
+
+			  if (f == null) {
+				while (++i < n) if ((b = array[i]) != null && b >= b) { a = b; break; }
+				while (++i < n) if ((b = array[i]) != null && b > a) a = b;
+			  }
+
+			  else {
+				while (++i < n) if ((b = f(array[i], i, array)) != null && b >= b) { a = b; break; }
+				while (++i < n) if ((b = f(array[i], i, array)) != null && b > a) a = b;
+			  }
+
+			  return a;
+			};
+
+			var mean = function(array, f) {
+			  var s = 0,
+				  n = array.length,
+				  a,
+				  i = -1,
+				  j = n;
+
+			  if (f == null) {
+				while (++i < n) if (!isNaN(a = number(array[i]))) s += a; else --j;
+			  }
+
+			  else {
+				while (++i < n) if (!isNaN(a = number(f(array[i], i, array)))) s += a; else --j;
+			  }
+
+			  if (j) return s / j;
+			};
+
+			var median = function(array, f) {
+			  var numbers = [],
+				  n = array.length,
+				  a,
+				  i = -1;
+
+			  if (f == null) {
+				while (++i < n) if (!isNaN(a = number(array[i]))) numbers.push(a);
+			  }
+
+			  else {
+				while (++i < n) if (!isNaN(a = number(f(array[i], i, array)))) numbers.push(a);
+			  }
+
+			  return threshold(numbers.sort(ascending), 0.5);
+			};
+
+			var merge = function(arrays) {
+			  var n = arrays.length,
+				  m,
+				  i = -1,
+				  j = 0,
+				  merged,
+				  array;
+
+			  while (++i < n) j += arrays[i].length;
+			  merged = new Array(j);
+
+			  while (--n >= 0) {
+				array = arrays[n];
+				m = array.length;
+				while (--m >= 0) {
+				  merged[--j] = array[m];
+				}
+			  }
+
+			  return merged;
+			};
+
+			var min = function(array, f) {
+			  var i = -1,
+				  n = array.length,
+				  a,
+				  b;
+
+			  if (f == null) {
+				while (++i < n) if ((b = array[i]) != null && b >= b) { a = b; break; }
+				while (++i < n) if ((b = array[i]) != null && a > b) a = b;
+			  }
+
+			  else {
+				while (++i < n) if ((b = f(array[i], i, array)) != null && b >= b) { a = b; break; }
+				while (++i < n) if ((b = f(array[i], i, array)) != null && a > b) a = b;
+			  }
+
+			  return a;
+			};
+
+			var pairs = function(array) {
+			  var i = 0, n = array.length - 1, p = array[0], pairs = new Array(n < 0 ? 0 : n);
+			  while (i < n) pairs[i] = [p, p = array[++i]];
+			  return pairs;
+			};
+
+			var permute = function(array, indexes) {
+			  var i = indexes.length, permutes = new Array(i);
+			  while (i--) permutes[i] = array[indexes[i]];
+			  return permutes;
+			};
+
+			var scan = function(array, compare) {
+			  if (!(n = array.length)) return;
+			  var i = 0,
+				  n,
+				  j = 0,
+				  xi,
+				  xj = array[j];
+
+			  if (!compare) compare = ascending;
+
+			  while (++i < n) if (compare(xi = array[i], xj) < 0 || compare(xj, xj) !== 0) xj = xi, j = i;
+
+			  if (compare(xj, xj) === 0) return j;
+			};
+
+			var shuffle = function(array, i0, i1) {
+			  var m = (i1 == null ? array.length : i1) - (i0 = i0 == null ? 0 : +i0),
+				  t,
+				  i;
+
+			  while (m) {
+				i = Math.random() * m-- | 0;
+				t = array[m + i0];
+				array[m + i0] = array[i + i0];
+				array[i + i0] = t;
+			  }
+
+			  return array;
+			};
+
+			var sum = function(array, f) {
+			  var s = 0,
+				  n = array.length,
+				  a,
+				  i = -1;
+
+			  if (f == null) {
+				while (++i < n) if (a = +array[i]) s += a; // Note: zero and null are equivalent.
+			  }
+
+			  else {
+				while (++i < n) if (a = +f(array[i], i, array)) s += a;
+			  }
+
+			  return s;
+			};
+
+			var transpose = function(matrix) {
+			  if (!(n = matrix.length)) return [];
+			  for (var i = -1, m = min(matrix, length), transpose = new Array(m); ++i < m;) {
+				for (var j = -1, n, row = transpose[i] = new Array(n); ++j < n;) {
+				  row[j] = matrix[j][i];
+				}
+			  }
+			  return transpose;
+			};
+
+			function length(d) {
+			  return d.length;
+			}
+
+			var zip = function() {
+			  return transpose(arguments);
+			};
+
+			var prefix = "$";
+
+			function Map() {}
+
+			Map.prototype = map$1.prototype = {
+			  constructor: Map,
+			  has: function(key) {
+				return (prefix + key) in this;
+			  },
+			  get: function(key) {
+				return this[prefix + key];
+			  },
+			  set: function(key, value) {
+				this[prefix + key] = value;
+				return this;
+			  },
+			  remove: function(key) {
+				var property = prefix + key;
+				return property in this && delete this[property];
+			  },
+			  clear: function() {
+				for (var property in this) if (property[0] === prefix) delete this[property];
+			  },
+			  keys: function() {
+				var keys = [];
+				for (var property in this) if (property[0] === prefix) keys.push(property.slice(1));
+				return keys;
+			  },
+			  values: function() {
+				var values = [];
+				for (var property in this) if (property[0] === prefix) values.push(this[property]);
+				return values;
+			  },
+			  entries: function() {
+				var entries = [];
+				for (var property in this) if (property[0] === prefix) entries.push({key: property.slice(1), value: this[property]});
+				return entries;
+			  },
+			  size: function() {
+				var size = 0;
+				for (var property in this) if (property[0] === prefix) ++size;
+				return size;
+			  },
+			  empty: function() {
+				for (var property in this) if (property[0] === prefix) return false;
+				return true;
+			  },
+			  each: function(f) {
+				for (var property in this) if (property[0] === prefix) f(this[property], property.slice(1), this);
+			  }
+			};
+
+			function map$1(object, f) {
+			  var map = new Map;
+
+			  // Copy constructor.
+			  if (object instanceof Map) object.each(function(value, key) { map.set(key, value); });
+
+			  // Index array by numeric index or specified key function.
+			  else if (Array.isArray(object)) {
+				var i = -1,
+					n = object.length,
+					o;
+
+				if (f == null) while (++i < n) map.set(i, object[i]);
+				else while (++i < n) map.set(f(o = object[i], i, object), o);
+			  }
+
+			  // Convert object to map.
+			  else if (object) for (var key in object) map.set(key, object[key]);
+
+			  return map;
+			}
+
+			var nest = function() {
+			  var keys = [],
+				  sortKeys = [],
+				  sortValues,
+				  rollup,
+				  nest;
+
+			  function apply(array, depth, createResult, setResult) {
+				if (depth >= keys.length) return rollup != null
+					? rollup(array) : (sortValues != null
+					? array.sort(sortValues)
+					: array);
+
+				var i = -1,
+					n = array.length,
+					key = keys[depth++],
+					keyValue,
+					value,
+					valuesByKey = map$1(),
+					values,
+					result = createResult();
+
+				while (++i < n) {
+				  if (values = valuesByKey.get(keyValue = key(value = array[i]) + "")) {
+					values.push(value);
+				  } else {
+					valuesByKey.set(keyValue, [value]);
+				  }
+				}
+
+				valuesByKey.each(function(values, key) {
+				  setResult(result, key, apply(values, depth, createResult, setResult));
+				});
+
+				return result;
+			  }
+
+			  function entries(map, depth) {
+				if (++depth > keys.length) return map;
+				var array, sortKey = sortKeys[depth - 1];
+				if (rollup != null && depth >= keys.length) array = map.entries();
+				else array = [], map.each(function(v, k) { array.push({key: k, values: entries(v, depth)}); });
+				return sortKey != null ? array.sort(function(a, b) { return sortKey(a.key, b.key); }) : array;
+			  }
+
+			  return nest = {
+				object: function(array) { return apply(array, 0, createObject, setObject); },
+				map: function(array) { return apply(array, 0, createMap, setMap); },
+				entries: function(array) { return entries(apply(array, 0, createMap, setMap), 0); },
+				key: function(d) { keys.push(d); return nest; },
+				sortKeys: function(order) { sortKeys[keys.length - 1] = order; return nest; },
+				sortValues: function(order) { sortValues = order; return nest; },
+				rollup: function(f) { rollup = f; return nest; }
+			  };
+			};
+
+			function createObject() {
+			  return {};
+			}
+
+			function setObject(object, key, value) {
+			  object[key] = value;
+			}
+
+			function createMap() {
+			  return map$1();
+			}
+
+			function setMap(map, key, value) {
+			  map.set(key, value);
+			}
+
+			function Set() {}
+
+			var proto = map$1.prototype;
+
+			Set.prototype = set.prototype = {
+			  constructor: Set,
+			  has: proto.has,
+			  add: function(value) {
+				value += "";
+				this[prefix + value] = value;
+				return this;
+			  },
+			  remove: proto.remove,
+			  clear: proto.clear,
+			  values: proto.keys,
+			  size: proto.size,
+			  empty: proto.empty,
+			  each: proto.each
+			};
+
+			function set(object, f) {
+			  var set = new Set;
+
+			  // Copy constructor.
+			  if (object instanceof Set) object.each(function(value) { set.add(value); });
+
+			  // Otherwise, assume it’s an array.
+			  else if (object) {
+				var i = -1, n = object.length;
+				if (f == null) while (++i < n) set.add(object[i]);
+				else while (++i < n) set.add(f(object[i], i, object));
+			  }
+
+			  return set;
+			}
+
+			var keys = function(map) {
+			  var keys = [];
+			  for (var key in map) keys.push(key);
+			  return keys;
+			};
+
+			var values = function(map) {
+			  var values = [];
+			  for (var key in map) values.push(map[key]);
+			  return values;
+			};
+
+			var entries = function(map) {
+			  var entries = [];
+			  for (var key in map) entries.push({key: key, value: map[key]});
+			  return entries;
+			};
+
+			var uniform = function(min, max) {
+			  min = min == null ? 0 : +min;
+			  max = max == null ? 1 : +max;
+			  if (arguments.length === 1) max = min, min = 0;
+			  else max -= min;
+			  return function() {
+				return Math.random() * max + min;
+			  };
+			};
+
+			var normal = function(mu, sigma) {
+			  var x, r;
+			  mu = mu == null ? 0 : +mu;
+			  sigma = sigma == null ? 1 : +sigma;
+			  return function() {
+				var y;
+
+				// If available, use the second previously-generated uniform random.
+				if (x != null) y = x, x = null;
+
+				// Otherwise, generate a new x and y.
+				else do {
+				  x = Math.random() * 2 - 1;
+				  y = Math.random() * 2 - 1;
+				  r = x * x + y * y;
+				} while (!r || r > 1);
+
+				return mu + sigma * y * Math.sqrt(-2 * Math.log(r) / r);
+			  };
+			};
+
+			var logNormal = function() {
+			  var randomNormal = normal.apply(this, arguments);
+			  return function() {
+				return Math.exp(randomNormal());
+			  };
+			};
+
+			var irwinHall = function(n) {
+			  return function() {
+				for (var sum = 0, i = 0; i < n; ++i) sum += Math.random();
+				return sum;
+			  };
+			};
+
+			var bates = function(n) {
+			  var randomIrwinHall = irwinHall(n);
+			  return function() {
+				return randomIrwinHall() / n;
+			  };
+			};
+
+			var exponential = function(lambda) {
+			  return function() {
+				return -Math.log(1 - Math.random()) / lambda;
+			  };
+			};
+
+			function linear(t) {
+			  return +t;
+			}
+
+			function quadIn(t) {
+			  return t * t;
+			}
+
+			function quadOut(t) {
+			  return t * (2 - t);
+			}
+
+			function quadInOut(t) {
+			  return ((t *= 2) <= 1 ? t * t : --t * (2 - t) + 1) / 2;
+			}
+
+			function cubicIn(t) {
+			  return t * t * t;
+			}
+
+			function cubicOut(t) {
+			  return --t * t * t + 1;
+			}
+
+			function cubicInOut(t) {
+			  return ((t *= 2) <= 1 ? t * t * t : (t -= 2) * t * t + 2) / 2;
+			}
+
+			var exponent = 3;
+
+			var polyIn = (function custom(e) {
+			  e = +e;
+
+			  function polyIn(t) {
+				return Math.pow(t, e);
+			  }
+
+			  polyIn.exponent = custom;
+
+			  return polyIn;
+			})(exponent);
+
+			var polyOut = (function custom(e) {
+			  e = +e;
+
+			  function polyOut(t) {
+				return 1 - Math.pow(1 - t, e);
+			  }
+
+			  polyOut.exponent = custom;
+
+			  return polyOut;
+			})(exponent);
+
+			var polyInOut = (function custom(e) {
+			  e = +e;
+
+			  function polyInOut(t) {
+				return ((t *= 2) <= 1 ? Math.pow(t, e) : 2 - Math.pow(2 - t, e)) / 2;
+			  }
+
+			  polyInOut.exponent = custom;
+
+			  return polyInOut;
+			})(exponent);
+
+			var pi = Math.PI;
+			var halfPi = pi / 2;
+
+			function sinIn(t) {
+			  return 1 - Math.cos(t * halfPi);
+			}
+
+			function sinOut(t) {
+			  return Math.sin(t * halfPi);
+			}
+
+			function sinInOut(t) {
+			  return (1 - Math.cos(pi * t)) / 2;
+			}
+
+			function expIn(t) {
+			  return Math.pow(2, 10 * t - 10);
+			}
+
+			function expOut(t) {
+			  return 1 - Math.pow(2, -10 * t);
+			}
+
+			function expInOut(t) {
+			  return ((t *= 2) <= 1 ? Math.pow(2, 10 * t - 10) : 2 - Math.pow(2, 10 - 10 * t)) / 2;
+			}
+
+			function circleIn(t) {
+			  return 1 - Math.sqrt(1 - t * t);
+			}
+
+			function circleOut(t) {
+			  return Math.sqrt(1 - --t * t);
+			}
+
+			function circleInOut(t) {
+			  return ((t *= 2) <= 1 ? 1 - Math.sqrt(1 - t * t) : Math.sqrt(1 - (t -= 2) * t) + 1) / 2;
+			}
+
+			var b1 = 4 / 11;
+			var b2 = 6 / 11;
+			var b3 = 8 / 11;
+			var b4 = 3 / 4;
+			var b5 = 9 / 11;
+			var b6 = 10 / 11;
+			var b7 = 15 / 16;
+			var b8 = 21 / 22;
+			var b9 = 63 / 64;
+			var b0 = 1 / b1 / b1;
+
+			function bounceIn(t) {
+			  return 1 - bounceOut(1 - t);
+			}
+
+			function bounceOut(t) {
+			  return (t = +t) < b1 ? b0 * t * t : t < b3 ? b0 * (t -= b2) * t + b4 : t < b6 ? b0 * (t -= b5) * t + b7 : b0 * (t -= b8) * t + b9;
+			}
+
+			function bounceInOut(t) {
+			  return ((t *= 2) <= 1 ? 1 - bounceOut(1 - t) : bounceOut(t - 1) + 1) / 2;
+			}
+
+			var overshoot = 1.70158;
+
+			var backIn = (function custom(s) {
+			  s = +s;
+
+			  function backIn(t) {
+				return t * t * ((s + 1) * t - s);
+			  }
+
+			  backIn.overshoot = custom;
+
+			  return backIn;
+			})(overshoot);
+
+			var backOut = (function custom(s) {
+			  s = +s;
+
+			  function backOut(t) {
+				return --t * t * ((s + 1) * t + s) + 1;
+			  }
+
+			  backOut.overshoot = custom;
+
+			  return backOut;
+			})(overshoot);
+
+			var backInOut = (function custom(s) {
+			  s = +s;
+
+			  function backInOut(t) {
+				return ((t *= 2) < 1 ? t * t * ((s + 1) * t - s) : (t -= 2) * t * ((s + 1) * t + s) + 2) / 2;
+			  }
+
+			  backInOut.overshoot = custom;
+
+			  return backInOut;
+			})(overshoot);
+
+			var tau = 2 * Math.PI;
+			var amplitude = 1;
+			var period = 0.3;
+
+			var elasticIn = (function custom(a, p) {
+			  var s = Math.asin(1 / (a = Math.max(1, a))) * (p /= tau);
+
+			  function elasticIn(t) {
+				return a * Math.pow(2, 10 * --t) * Math.sin((s - t) / p);
+			  }
+
+			  elasticIn.amplitude = function(a) { return custom(a, p * tau); };
+			  elasticIn.period = function(p) { return custom(a, p); };
+
+			  return elasticIn;
+			})(amplitude, period);
+
+			var elasticOut = (function custom(a, p) {
+			  var s = Math.asin(1 / (a = Math.max(1, a))) * (p /= tau);
+
+			  function elasticOut(t) {
+				return 1 - a * Math.pow(2, -10 * (t = +t)) * Math.sin((t + s) / p);
+			  }
+
+			  elasticOut.amplitude = function(a) { return custom(a, p * tau); };
+			  elasticOut.period = function(p) { return custom(a, p); };
+
+			  return elasticOut;
+			})(amplitude, period);
+
+			var elasticInOut = (function custom(a, p) {
+			  var s = Math.asin(1 / (a = Math.max(1, a))) * (p /= tau);
+
+			  function elasticInOut(t) {
+				return ((t = t * 2 - 1) < 0
+					? a * Math.pow(2, 10 * t) * Math.sin((s - t) / p)
+					: 2 - a * Math.pow(2, -10 * t) * Math.sin((s + t) / p)) / 2;
+			  }
+
+			  elasticInOut.amplitude = function(a) { return custom(a, p * tau); };
+			  elasticInOut.period = function(p) { return custom(a, p); };
+
+			  return elasticInOut;
+			})(amplitude, period);
+
+			var area = function(polygon) {
+			  var i = -1,
+				  n = polygon.length,
+				  a,
+				  b = polygon[n - 1],
+				  area = 0;
+
+			  while (++i < n) {
+				a = b;
+				b = polygon[i];
+				area += a[1] * b[0] - a[0] * b[1];
+			  }
+
+			  return area / 2;
+			};
+
+			var centroid = function(polygon) {
+			  var i = -1,
+				  n = polygon.length,
+				  x = 0,
+				  y = 0,
+				  a,
+				  b = polygon[n - 1],
+				  c,
+				  k = 0;
+
+			  while (++i < n) {
+				a = b;
+				b = polygon[i];
+				k += c = a[0] * b[1] - b[0] * a[1];
+				x += (a[0] + b[0]) * c;
+				y += (a[1] + b[1]) * c;
+			  }
+
+			  return k *= 3, [x / k, y / k];
+			};
+
+			// Returns the 2D cross product of AB and AC vectors, i.e., the z-component of
+			// the 3D cross product in a quadrant I Cartesian coordinate system (+x is
+			// right, +y is up). Returns a positive value if ABC is counter-clockwise,
+			// negative if clockwise, and zero if the points are collinear.
+			var cross = function(a, b, c) {
+			  return (b[0] - a[0]) * (c[1] - a[1]) - (b[1] - a[1]) * (c[0] - a[0]);
+			};
+
+			function lexicographicOrder(a, b) {
+			  return a[0] - b[0] || a[1] - b[1];
+			}
+
+			// Computes the upper convex hull per the monotone chain algorithm.
+			// Assumes points.length >= 3, is sorted by x, unique in y.
+			// Returns an array of indices into points in left-to-right order.
+			function computeUpperHullIndexes(points) {
+			  var n = points.length,
+				  indexes = [0, 1],
+				  size = 2;
+
+			  for (var i = 2; i < n; ++i) {
+				while (size > 1 && cross(points[indexes[size - 2]], points[indexes[size - 1]], points[i]) <= 0) --size;
+				indexes[size++] = i;
+			  }
+
+			  return indexes.slice(0, size); // remove popped points
+			}
+
+			var hull = function(points) {
+			  if ((n = points.length) < 3) return null;
+
+			  var i,
+				  n,
+				  sortedPoints = new Array(n),
+				  flippedPoints = new Array(n);
+
+			  for (i = 0; i < n; ++i) sortedPoints[i] = [+points[i][0], +points[i][1], i];
+			  sortedPoints.sort(lexicographicOrder);
+			  for (i = 0; i < n; ++i) flippedPoints[i] = [sortedPoints[i][0], -sortedPoints[i][1]];
+
+			  var upperIndexes = computeUpperHullIndexes(sortedPoints),
+				  lowerIndexes = computeUpperHullIndexes(flippedPoints);
+
+			  // Construct the hull polygon, removing possible duplicate endpoints.
+			  var skipLeft = lowerIndexes[0] === upperIndexes[0],
+				  skipRight = lowerIndexes[lowerIndexes.length - 1] === upperIndexes[upperIndexes.length - 1],
+				  hull = [];
+
+			  // Add upper hull in right-to-l order.
+			  // Then add lower hull in left-to-right order.
+			  for (i = upperIndexes.length - 1; i >= 0; --i) hull.push(points[sortedPoints[upperIndexes[i]][2]]);
+			  for (i = +skipLeft; i < lowerIndexes.length - skipRight; ++i) hull.push(points[sortedPoints[lowerIndexes[i]][2]]);
+
+			  return hull;
+			};
+
+			var contains = function(polygon, point) {
+			  var n = polygon.length,
+				  p = polygon[n - 1],
+				  x = point[0], y = point[1],
+				  x0 = p[0], y0 = p[1],
+				  x1, y1,
+				  inside = false;
+
+			  for (var i = 0; i < n; ++i) {
+				p = polygon[i], x1 = p[0], y1 = p[1];
+				if (((y1 > y) !== (y0 > y)) && (x < (x0 - x1) * (y - y1) / (y0 - y1) + x1)) inside = !inside;
+				x0 = x1, y0 = y1;
+			  }
+
+			  return inside;
+			};
+
+			var length$1 = function(polygon) {
+			  var i = -1,
+				  n = polygon.length,
+				  b = polygon[n - 1],
+				  xa,
+				  ya,
+				  xb = b[0],
+				  yb = b[1],
+				  perimeter = 0;
+
+			  while (++i < n) {
+				xa = xb;
+				ya = yb;
+				b = polygon[i];
+				xb = b[0];
+				yb = b[1];
+				xa -= xb;
+				ya -= yb;
+				perimeter += Math.sqrt(xa * xa + ya * ya);
+			  }
+
+			  return perimeter;
+			};
+
+			var pi$1 = Math.PI;
+			var tau$1 = 2 * pi$1;
+			var epsilon = 1e-6;
+			var tauEpsilon = tau$1 - epsilon;
+
+			function Path() {
+			  this._x0 = this._y0 = // start of current subpath
+			  this._x1 = this._y1 = null; // end of current subpath
+			  this._ = [];
+			}
+
+			function path() {
+			  return new Path;
+			}
+
+			Path.prototype = path.prototype = {
+			  constructor: Path,
+			  moveTo: function(x, y) {
+				this._.push("M", this._x0 = this._x1 = +x, ",", this._y0 = this._y1 = +y);
+			  },
+			  closePath: function() {
+				if (this._x1 !== null) {
+				  this._x1 = this._x0, this._y1 = this._y0;
+				  this._.push("Z");
+				}
+			  },
+			  lineTo: function(x, y) {
+				this._.push("L", this._x1 = +x, ",", this._y1 = +y);
+			  },
+			  quadraticCurveTo: function(x1, y1, x, y) {
+				this._.push("Q", +x1, ",", +y1, ",", this._x1 = +x, ",", this._y1 = +y);
+			  },
+			  bezierCurveTo: function(x1, y1, x2, y2, x, y) {
+				this._.push("C", +x1, ",", +y1, ",", +x2, ",", +y2, ",", this._x1 = +x, ",", this._y1 = +y);
+			  },
+			  arcTo: function(x1, y1, x2, y2, r) {
+				x1 = +x1, y1 = +y1, x2 = +x2, y2 = +y2, r = +r;
+				var x0 = this._x1,
+					y0 = this._y1,
+					x21 = x2 - x1,
+					y21 = y2 - y1,
+					x01 = x0 - x1,
+					y01 = y0 - y1,
+					l01_2 = x01 * x01 + y01 * y01;
+
+				// Is the radius negative? Error.
+				if (r < 0) throw new Error("negative radius: " + r);
+
+				// Is this path empty? Move to (x1,y1).
+				if (this._x1 === null) {
+				  this._.push(
+					"M", this._x1 = x1, ",", this._y1 = y1
+				  );
+				}
+
+				// Or, is (x1,y1) coincident with (x0,y0)? Do nothing.
+				else if (!(l01_2 > epsilon)) {}
+
+				// Or, are (x0,y0), (x1,y1) and (x2,y2) collinear?
+				// Equivalently, is (x1,y1) coincident with (x2,y2)?
+				// Or, is the radius zero? Line to (x1,y1).
+				else if (!(Math.abs(y01 * x21 - y21 * x01) > epsilon) || !r) {
+				  this._.push(
+					"L", this._x1 = x1, ",", this._y1 = y1
+				  );
+				}
+
+				// Otherwise, draw an arc!
+				else {
+				  var x20 = x2 - x0,
+					  y20 = y2 - y0,
+					  l21_2 = x21 * x21 + y21 * y21,
+					  l20_2 = x20 * x20 + y20 * y20,
+					  l21 = Math.sqrt(l21_2),
+					  l01 = Math.sqrt(l01_2),
+					  l = r * Math.tan((pi$1 - Math.acos((l21_2 + l01_2 - l20_2) / (2 * l21 * l01))) / 2),
+					  t01 = l / l01,
+					  t21 = l / l21;
+
+				  // If the start tangent is not coincident with (x0,y0), line to.
+				  if (Math.abs(t01 - 1) > epsilon) {
+					this._.push(
+					  "L", x1 + t01 * x01, ",", y1 + t01 * y01
+					);
+				  }
+
+				  this._.push(
+					"A", r, ",", r, ",0,0,", +(y01 * x20 > x01 * y20), ",", this._x1 = x1 + t21 * x21, ",", this._y1 = y1 + t21 * y21
+				  );
+				}
+			  },
+			  arc: function(x, y, r, a0, a1, ccw) {
+				x = +x, y = +y, r = +r;
+				var dx = r * Math.cos(a0),
+					dy = r * Math.sin(a0),
+					x0 = x + dx,
+					y0 = y + dy,
+					cw = 1 ^ ccw,
+					da = ccw ? a0 - a1 : a1 - a0;
+
+				// Is the radius negative? Error.
+				if (r < 0) throw new Error("negative radius: " + r);
+
+				// Is this path empty? Move to (x0,y0).
+				if (this._x1 === null) {
+				  this._.push(
+					"M", x0, ",", y0
+				  );
+				}
+
+				// Or, is (x0,y0) not coincident with the previous point? Line to (x0,y0).
+				else if (Math.abs(this._x1 - x0) > epsilon || Math.abs(this._y1 - y0) > epsilon) {
+				  this._.push(
+					"L", x0, ",", y0
+				  );
+				}
+
+				// Is this arc empty? We’re done.
+				if (!r) return;
+
+				// Is this a complete circle? Draw two arcs to complete the circle.
+				if (da > tauEpsilon) {
+				  this._.push(
+					"A", r, ",", r, ",0,1,", cw, ",", x - dx, ",", y - dy,
+					"A", r, ",", r, ",0,1,", cw, ",", this._x1 = x0, ",", this._y1 = y0
+				  );
+				}
+
+				// Otherwise, draw an arc!
+				else {
+				  if (da < 0) da = da % tau$1 + tau$1;
+				  this._.push(
+					"A", r, ",", r, ",0,", +(da >= pi$1), ",", cw, ",", this._x1 = x + r * Math.cos(a1), ",", this._y1 = y + r * Math.sin(a1)
+				  );
+				}
+			  },
+			  rect: function(x, y, w, h) {
+				this._.push("M", this._x0 = this._x1 = +x, ",", this._y0 = this._y1 = +y, "h", +w, "v", +h, "h", -w, "Z");
+			  },
+			  toString: function() {
+				return this._.join("");
+			  }
+			};
+
+			var tree_add = function(d) {
+			  var x = +this._x.call(null, d),
+				  y = +this._y.call(null, d);
+			  return add(this.cover(x, y), x, y, d);
+			};
+
+			function add(tree, x, y, d) {
+			  if (isNaN(x) || isNaN(y)) return tree; // ignore invalid points
+
+			  var parent,
+				  node = tree._root,
+				  leaf = {data: d},
+				  x0 = tree._x0,
+				  y0 = tree._y0,
+				  x1 = tree._x1,
+				  y1 = tree._y1,
+				  xm,
+				  ym,
+				  xp,
+				  yp,
+				  right,
+				  bottom,
+				  i,
+				  j;
+
+			  // If the tree is empty, initialize the root as a leaf.
+			  if (!node) return tree._root = leaf, tree;
+
+			  // Find the existing leaf for the new point, or add it.
+			  while (node.length) {
+				if (right = x >= (xm = (x0 + x1) / 2)) x0 = xm; else x1 = xm;
+				if (bottom = y >= (ym = (y0 + y1) / 2)) y0 = ym; else y1 = ym;
+				if (parent = node, !(node = node[i = bottom << 1 | right])) return parent[i] = leaf, tree;
+			  }
+
+			  // Is the new point is exactly coincident with the existing point?
+			  xp = +tree._x.call(null, node.data);
+			  yp = +tree._y.call(null, node.data);
+			  if (x === xp && y === yp) return leaf.next = node, parent ? parent[i] = leaf : tree._root = leaf, tree;
+
+			  // Otherwise, split the leaf node until the old and new point are separated.
+			  do {
+				parent = parent ? parent[i] = new Array(4) : tree._root = new Array(4);
+				if (right = x >= (xm = (x0 + x1) / 2)) x0 = xm; else x1 = xm;
+				if (bottom = y >= (ym = (y0 + y1) / 2)) y0 = ym; else y1 = ym;
+			  } while ((i = bottom << 1 | right) === (j = (yp >= ym) << 1 | (xp >= xm)));
+			  return parent[j] = node, parent[i] = leaf, tree;
+			}
+
+			function addAll(data) {
+			  var d, i, n = data.length,
+				  x,
+				  y,
+				  xz = new Array(n),
+				  yz = new Array(n),
+				  x0 = Infinity,
+				  y0 = Infinity,
+				  x1 = -Infinity,
+				  y1 = -Infinity;
+
+			  // Compute the points and their extent.
+			  for (i = 0; i < n; ++i) {
+				if (isNaN(x = +this._x.call(null, d = data[i])) || isNaN(y = +this._y.call(null, d))) continue;
+				xz[i] = x;
+				yz[i] = y;
+				if (x < x0) x0 = x;
+				if (x > x1) x1 = x;
+				if (y < y0) y0 = y;
+				if (y > y1) y1 = y;
+			  }
+
+			  // If there were no (valid) points, inherit the existing extent.
+			  if (x1 < x0) x0 = this._x0, x1 = this._x1;
+			  if (y1 < y0) y0 = this._y0, y1 = this._y1;
+
+			  // Expand the tree to cover the new points.
+			  this.cover(x0, y0).cover(x1, y1);
+
+			  // Add the new points.
+			  for (i = 0; i < n; ++i) {
+				add(this, xz[i], yz[i], data[i]);
+			  }
+
+			  return this;
+			}
+
+			var tree_cover = function(x, y) {
+			  if (isNaN(x = +x) || isNaN(y = +y)) return this; // ignore invalid points
+
+			  var x0 = this._x0,
+				  y0 = this._y0,
+				  x1 = this._x1,
+				  y1 = this._y1;
+
+			  // If the quadtree has no extent, initialize them.
+			  // Integer extent are necessary so that if we later double the extent,
+			  // the existing quadrant boundaries don’t change due to floating point error!
+			  if (isNaN(x0)) {
+				x1 = (x0 = Math.floor(x)) + 1;
+				y1 = (y0 = Math.floor(y)) + 1;
+			  }
+
+			  // Otherwise, double repeatedly to cover.
+			  else if (x0 > x || x > x1 || y0 > y || y > y1) {
+				var z = x1 - x0,
+					node = this._root,
+					parent,
+					i;
+
+				switch (i = (y < (y0 + y1) / 2) << 1 | (x < (x0 + x1) / 2)) {
+				  case 0: {
+					do parent = new Array(4), parent[i] = node, node = parent;
+					while (z *= 2, x1 = x0 + z, y1 = y0 + z, x > x1 || y > y1);
+					break;
+				  }
+				  case 1: {
+					do parent = new Array(4), parent[i] = node, node = parent;
+					while (z *= 2, x0 = x1 - z, y1 = y0 + z, x0 > x || y > y1);
+					break;
+				  }
+				  case 2: {
+					do parent = new Array(4), parent[i] = node, node = parent;
+					while (z *= 2, x1 = x0 + z, y0 = y1 - z, x > x1 || y0 > y);
+					break;
+				  }
+				  case 3: {
+					do parent = new Array(4), parent[i] = node, node = parent;
+					while (z *= 2, x0 = x1 - z, y0 = y1 - z, x0 > x || y0 > y);
+					break;
+				  }
+				}
+
+				if (this._root && this._root.length) this._root = node;
+			  }
+
+			  // If the quadtree covers the point already, just return.
+			  else return this;
+
+			  this._x0 = x0;
+			  this._y0 = y0;
+			  this._x1 = x1;
+			  this._y1 = y1;
+			  return this;
+			};
+
+			var tree_data = function() {
+			  var data = [];
+			  this.visit(function(node) {
+				if (!node.length) do data.push(node.data); while (node = node.next)
+			  });
+			  return data;
+			};
+
+			var tree_extent = function(_) {
+			  return arguments.length
+				  ? this.cover(+_[0][0], +_[0][1]).cover(+_[1][0], +_[1][1])
+				  : isNaN(this._x0) ? undefined : [[this._x0, this._y0], [this._x1, this._y1]];
+			};
+
+			var Quad = function(node, x0, y0, x1, y1) {
+			  this.node = node;
+			  this.x0 = x0;
+			  this.y0 = y0;
+			  this.x1 = x1;
+			  this.y1 = y1;
+			};
+
+			var tree_find = function(x, y, radius) {
+			  var data,
+				  x0 = this._x0,
+				  y0 = this._y0,
+				  x1,
+				  y1,
+				  x2,
+				  y2,
+				  x3 = this._x1,
+				  y3 = this._y1,
+				  quads = [],
+				  node = this._root,
+				  q,
+				  i;
+
+			  if (node) quads.push(new Quad(node, x0, y0, x3, y3));
+			  if (radius == null) radius = Infinity;
+			  else {
+				x0 = x - radius, y0 = y - radius;
+				x3 = x + radius, y3 = y + radius;
+				radius *= radius;
+			  }
+
+			  while (q = quads.pop()) {
+
+				// Stop searching if this quadrant can’t contain a closer node.
+				if (!(node = q.node)
+					|| (x1 = q.x0) > x3
+					|| (y1 = q.y0) > y3
+					|| (x2 = q.x1) < x0
+					|| (y2 = q.y1) < y0) continue;
+
+				// Bisect the current quadrant.
+				if (node.length) {
+				  var xm = (x1 + x2) / 2,
+					  ym = (y1 + y2) / 2;
+
+				  quads.push(
+					new Quad(node[3], xm, ym, x2, y2),
+					new Quad(node[2], x1, ym, xm, y2),
+					new Quad(node[1], xm, y1, x2, ym),
+					new Quad(node[0], x1, y1, xm, ym)
+				  );
+
+				  // Visit the closest quadrant first.
+				  if (i = (y >= ym) << 1 | (x >= xm)) {
+					q = quads[quads.length - 1];
+					quads[quads.length - 1] = quads[quads.length - 1 - i];
+					quads[quads.length - 1 - i] = q;
+				  }
+				}
+
+				// Visit this point. (Visiting coincident points isn’t necessary!)
+				else {
+				  var dx = x - +this._x.call(null, node.data),
+					  dy = y - +this._y.call(null, node.data),
+					  d2 = dx * dx + dy * dy;
+				  if (d2 < radius) {
+					var d = Math.sqrt(radius = d2);
+					x0 = x - d, y0 = y - d;
+					x3 = x + d, y3 = y + d;
+					data = node.data;
+				  }
+				}
+			  }
+
+			  return data;
+			};
+
+			var tree_remove = function(d) {
+			  if (isNaN(x = +this._x.call(null, d)) || isNaN(y = +this._y.call(null, d))) return this; // ignore invalid points
+
+			  var parent,
+				  node = this._root,
+				  retainer,
+				  previous,
+				  next,
+				  x0 = this._x0,
+				  y0 = this._y0,
+				  x1 = this._x1,
+				  y1 = this._y1,
+				  x,
+				  y,
+				  xm,
+				  ym,
+				  right,
+				  bottom,
+				  i,
+				  j;
+
+			  // If the tree is empty, initialize the root as a leaf.
+			  if (!node) return this;
+
+			  // Find the leaf node for the point.
+			  // While descending, also retain the deepest parent with a non-removed sibling.
+			  if (node.length) while (true) {
+				if (right = x >= (xm = (x0 + x1) / 2)) x0 = xm; else x1 = xm;
+				if (bottom = y >= (ym = (y0 + y1) / 2)) y0 = ym; else y1 = ym;
+				if (!(parent = node, node = node[i = bottom << 1 | right])) return this;
+				if (!node.length) break;
+				if (parent[(i + 1) & 3] || parent[(i + 2) & 3] || parent[(i + 3) & 3]) retainer = parent, j = i;
+			  }
+
+			  // Find the point to remove.
+			  while (node.data !== d) if (!(previous = node, node = node.next)) return this;
+			  if (next = node.next) delete node.next;
+
+			  // If there are multiple coincident points, remove just the point.
+			  if (previous) return (next ? previous.next = next : delete previous.next), this;
+
+			  // If this is the root point, remove it.
+			  if (!parent) return this._root = next, this;
+
+			  // Remove this leaf.
+			  next ? parent[i] = next : delete parent[i];
+
+			  // If the parent now contains exactly one leaf, collapse superfluous parents.
+			  if ((node = parent[0] || parent[1] || parent[2] || parent[3])
+				  && node === (parent[3] || parent[2] || parent[1] || parent[0])
+				  && !node.length) {
+				if (retainer) retainer[j] = node;
+				else this._root = node;
+			  }
+
+			  return this;
+			};
+
+			function removeAll(data) {
+			  for (var i = 0, n = data.length; i < n; ++i) this.remove(data[i]);
+			  return this;
+			}
+
+			var tree_root = function() {
+			  return this._root;
+			};
+
+			var tree_size = function() {
+			  var size = 0;
+			  this.visit(function(node) {
+				if (!node.length) do ++size; while (node = node.next)
+			  });
+			  return size;
+			};
+
+			var tree_visit = function(callback) {
+			  var quads = [], q, node = this._root, child, x0, y0, x1, y1;
+			  if (node) quads.push(new Quad(node, this._x0, this._y0, this._x1, this._y1));
+			  while (q = quads.pop()) {
+				if (!callback(node = q.node, x0 = q.x0, y0 = q.y0, x1 = q.x1, y1 = q.y1) && node.length) {
+				  var xm = (x0 + x1) / 2, ym = (y0 + y1) / 2;
+				  if (child = node[3]) quads.push(new Quad(child, xm, ym, x1, y1));
+				  if (child = node[2]) quads.push(new Quad(child, x0, ym, xm, y1));
+				  if (child = node[1]) quads.push(new Quad(child, xm, y0, x1, ym));
+				  if (child = node[0]) quads.push(new Quad(child, x0, y0, xm, ym));
+				}
+			  }
+			  return this;
+			};
+
+			var tree_visitAfter = function(callback) {
+			  var quads = [], next = [], q;
+			  if (this._root) quads.push(new Quad(this._root, this._x0, this._y0, this._x1, this._y1));
+			  while (q = quads.pop()) {
+				var node = q.node;
+				if (node.length) {
+				  var child, x0 = q.x0, y0 = q.y0, x1 = q.x1, y1 = q.y1, xm = (x0 + x1) / 2, ym = (y0 + y1) / 2;
+				  if (child = node[0]) quads.push(new Quad(child, x0, y0, xm, ym));
+				  if (child = node[1]) quads.push(new Quad(child, xm, y0, x1, ym));
+				  if (child = node[2]) quads.push(new Quad(child, x0, ym, xm, y1));
+				  if (child = node[3]) quads.push(new Quad(child, xm, ym, x1, y1));
+				}
+				next.push(q);
+			  }
+			  while (q = next.pop()) {
+				callback(q.node, q.x0, q.y0, q.x1, q.y1);
+			  }
+			  return this;
+			};
+
+			function defaultX(d) {
+			  return d[0];
+			}
+
+			var tree_x = function(_) {
+			  return arguments.length ? (this._x = _, this) : this._x;
+			};
+
+			function defaultY(d) {
+			  return d[1];
+			}
+
+			var tree_y = function(_) {
+			  return arguments.length ? (this._y = _, this) : this._y;
+			};
+
+			function quadtree(nodes, x, y) {
+			  var tree = new Quadtree(x == null ? defaultX : x, y == null ? defaultY : y, NaN, NaN, NaN, NaN);
+			  return nodes == null ? tree : tree.addAll(nodes);
+			}
+
+			function Quadtree(x, y, x0, y0, x1, y1) {
+			  this._x = x;
+			  this._y = y;
+			  this._x0 = x0;
+			  this._y0 = y0;
+			  this._x1 = x1;
+			  this._y1 = y1;
+			  this._root = undefined;
+			}
+
+			function leaf_copy(leaf) {
+			  var copy = {data: leaf.data}, next = copy;
+			  while (leaf = leaf.next) next = next.next = {data: leaf.data};
+			  return copy;
+			}
+
+			var treeProto = quadtree.prototype = Quadtree.prototype;
+
+			treeProto.copy = function() {
+			  var copy = new Quadtree(this._x, this._y, this._x0, this._y0, this._x1, this._y1),
+				  node = this._root,
+				  nodes,
+				  child;
+
+			  if (!node) return copy;
+
+			  if (!node.length) return copy._root = leaf_copy(node), copy;
+
+			  nodes = [{source: node, target: copy._root = new Array(4)}];
+			  while (node = nodes.pop()) {
+				for (var i = 0; i < 4; ++i) {
+				  if (child = node.source[i]) {
+					if (child.length) nodes.push({source: child, target: node.target[i] = new Array(4)});
+					else node.target[i] = leaf_copy(child);
+				  }
+				}
+			  }
+
+			  return copy;
+			};
+
+			treeProto.add = tree_add;
+			treeProto.addAll = addAll;
+			treeProto.cover = tree_cover;
+			treeProto.data = tree_data;
+			treeProto.extent = tree_extent;
+			treeProto.find = tree_find;
+			treeProto.remove = tree_remove;
+			treeProto.removeAll = removeAll;
+			treeProto.root = tree_root;
+			treeProto.size = tree_size;
+			treeProto.visit = tree_visit;
+			treeProto.visitAfter = tree_visitAfter;
+			treeProto.x = tree_x;
+			treeProto.y = tree_y;
+
+			var slice$1 = [].slice;
+
+			var noabort = {};
+
+			function Queue(size) {
+			  if (!(size >= 1)) throw new Error;
+			  this._size = size;
+			  this._call =
+			  this._error = null;
+			  this._tasks = [];
+			  this._data = [];
+			  this._waiting =
+			  this._active =
+			  this._ended =
+			  this._start = 0; // inside a synchronous task callback?
+			}
+
+			Queue.prototype = queue.prototype = {
+			  constructor: Queue,
+			  defer: function(callback) {
+				if (typeof callback !== "function" || this._call) throw new Error;
+				if (this._error != null) return this;
+				var t = slice$1.call(arguments, 1);
+				t.push(callback);
+				++this._waiting, this._tasks.push(t);
+				poke(this);
+				return this;
+			  },
+			  abort: function() {
+				if (this._error == null) abort(this, new Error("abort"));
+				return this;
+			  },
+			  await: function(callback) {
+				if (typeof callback !== "function" || this._call) throw new Error;
+				this._call = function(error, results) { callback.apply(null, [error].concat(results)); };
+				maybeNotify(this);
+				return this;
+			  },
+			  awaitAll: function(callback) {
+				if (typeof callback !== "function" || this._call) throw new Error;
+				this._call = callback;
+				maybeNotify(this);
+				return this;
+			  }
+			};
+
+			function poke(q) {
+			  if (!q._start) {
+				try { start(q); } // let the current task complete
+				catch (e) {
+				  if (q._tasks[q._ended + q._active - 1]) abort(q, e); // task errored synchronously
+				  else if (!q._data) throw e; // await callback errored synchronously
+				}
+			  }
+			}
+
+			function start(q) {
+			  while (q._start = q._waiting && q._active < q._size) {
+				var i = q._ended + q._active,
+					t = q._tasks[i],
+					j = t.length - 1,
+					c = t[j];
+				t[j] = end(q, i);
+				--q._waiting, ++q._active;
+				t = c.apply(null, t);
+				if (!q._tasks[i]) continue; // task finished synchronously
+				q._tasks[i] = t || noabort;
+			  }
+			}
+
+			function end(q, i) {
+			  return function(e, r) {
+				if (!q._tasks[i]) return; // ignore multiple callbacks
+				--q._active, ++q._ended;
+				q._tasks[i] = null;
+				if (q._error != null) return; // ignore secondary errors
+				if (e != null) {
+				  abort(q, e);
+				} else {
+				  q._data[i] = r;
+				  if (q._waiting) poke(q);
+				  else maybeNotify(q);
+				}
+			  };
+			}
+
+			function abort(q, e) {
+			  var i = q._tasks.length, t;
+			  q._error = e; // ignore active callbacks
+			  q._data = undefined; // allow gc
+			  q._waiting = NaN; // prevent starting
+
+			  while (--i >= 0) {
+				if (t = q._tasks[i]) {
+				  q._tasks[i] = null;
+				  if (t.abort) {
+					try { t.abort(); }
+					catch (e) { /* ignore */ }
+				  }
+				}
+			  }
+
+			  q._active = NaN; // allow notification
+			  maybeNotify(q);
+			}
+
+			function maybeNotify(q) {
+			  if (!q._active && q._call) {
+				var d = q._data;
+				q._data = undefined; // allow gc
+				q._call(q._error, d);
+			  }
+			}
+
+			function queue(concurrency) {
+			  return new Queue(arguments.length ? +concurrency : Infinity);
+			}
+
+			var constant$2 = function(x) {
+			  return function constant() {
+				return x;
+			  };
+			};
+
+			var epsilon$1 = 1e-12;
+			var pi$2 = Math.PI;
+			var halfPi$1 = pi$2 / 2;
+			var tau$2 = 2 * pi$2;
+
+			function arcInnerRadius(d) {
+			  return d.innerRadius;
+			}
+
+			function arcOuterRadius(d) {
+			  return d.outerRadius;
+			}
+
+			function arcStartAngle(d) {
+			  return d.startAngle;
+			}
+
+			function arcEndAngle(d) {
+			  return d.endAngle;
+			}
+
+			function arcPadAngle(d) {
+			  return d && d.padAngle; // Note: optional!
+			}
+
+			function asin(x) {
+			  return x >= 1 ? halfPi$1 : x <= -1 ? -halfPi$1 : Math.asin(x);
+			}
+
+			function intersect(x0, y0, x1, y1, x2, y2, x3, y3) {
+			  var x10 = x1 - x0, y10 = y1 - y0,
+				  x32 = x3 - x2, y32 = y3 - y2,
+				  t = (x32 * (y0 - y2) - y32 * (x0 - x2)) / (y32 * x10 - x32 * y10);
+			  return [x0 + t * x10, y0 + t * y10];
+			}
+
+			// Compute perpendicular offset line of length rc.
+			// http://mathworld.wolfram.com/Circle-LineIntersection.html
+			function cornerTangents(x0, y0, x1, y1, r1, rc, cw) {
+			  var x01 = x0 - x1,
+				  y01 = y0 - y1,
+				  lo = (cw ? rc : -rc) / Math.sqrt(x01 * x01 + y01 * y01),
+				  ox = lo * y01,
+				  oy = -lo * x01,
+				  x11 = x0 + ox,
+				  y11 = y0 + oy,
+				  x10 = x1 + ox,
+				  y10 = y1 + oy,
+				  x00 = (x11 + x10) / 2,
+				  y00 = (y11 + y10) / 2,
+				  dx = x10 - x11,
+				  dy = y10 - y11,
+				  d2 = dx * dx + dy * dy,
+				  r = r1 - rc,
+				  D = x11 * y10 - x10 * y11,
+				  d = (dy < 0 ? -1 : 1) * Math.sqrt(Math.max(0, r * r * d2 - D * D)),
+				  cx0 = (D * dy - dx * d) / d2,
+				  cy0 = (-D * dx - dy * d) / d2,
+				  cx1 = (D * dy + dx * d) / d2,
+				  cy1 = (-D * dx + dy * d) / d2,
+				  dx0 = cx0 - x00,
+				  dy0 = cy0 - y00,
+				  dx1 = cx1 - x00,
+				  dy1 = cy1 - y00;
+
+			  // Pick the closer of the two intersection points.
+			  // TODO Is there a faster way to determine which intersection to use?
+			  if (dx0 * dx0 + dy0 * dy0 > dx1 * dx1 + dy1 * dy1) cx0 = cx1, cy0 = cy1;
+
+			  return {
+				cx: cx0,
+				cy: cy0,
+				x01: -ox,
+				y01: -oy,
+				x11: cx0 * (r1 / r - 1),
+				y11: cy0 * (r1 / r - 1)
+			  };
+			}
+
+			var arc = function() {
+			  var innerRadius = arcInnerRadius,
+				  outerRadius = arcOuterRadius,
+				  cornerRadius = constant$2(0),
+				  padRadius = null,
+				  startAngle = arcStartAngle,
+				  endAngle = arcEndAngle,
+				  padAngle = arcPadAngle,
+				  context = null;
+
+			  function arc() {
+				var buffer,
+					r,
+					r0 = +innerRadius.apply(this, arguments),
+					r1 = +outerRadius.apply(this, arguments),
+					a0 = startAngle.apply(this, arguments) - halfPi$1,
+					a1 = endAngle.apply(this, arguments) - halfPi$1,
+					da = Math.abs(a1 - a0),
+					cw = a1 > a0;
+
+				if (!context) context = buffer = path();
+
+				// Ensure that the outer radius is always larger than the inner radius.
+				if (r1 < r0) r = r1, r1 = r0, r0 = r;
+
+				// Is it a point?
+				if (!(r1 > epsilon$1)) context.moveTo(0, 0);
+
+				// Or is it a circle or annulus?
+				else if (da > tau$2 - epsilon$1) {
+				  context.moveTo(r1 * Math.cos(a0), r1 * Math.sin(a0));
+				  context.arc(0, 0, r1, a0, a1, !cw);
+				  if (r0 > epsilon$1) {
+					context.moveTo(r0 * Math.cos(a1), r0 * Math.sin(a1));
+					context.arc(0, 0, r0, a1, a0, cw);
+				  }
+				}
+
+				// Or is it a circular or annular sector?
+				else {
+				  var a01 = a0,
+					  a11 = a1,
+					  a00 = a0,
+					  a10 = a1,
+					  da0 = da,
+					  da1 = da,
+					  ap = padAngle.apply(this, arguments) / 2,
+					  rp = (ap > epsilon$1) && (padRadius ? +padRadius.apply(this, arguments) : Math.sqrt(r0 * r0 + r1 * r1)),
+					  rc = Math.min(Math.abs(r1 - r0) / 2, +cornerRadius.apply(this, arguments)),
+					  rc0 = rc,
+					  rc1 = rc,
+					  t0,
+					  t1;
+
+				  // Apply padding? Note that since r1 ≥ r0, da1 ≥ da0.
+				  if (rp > epsilon$1) {
+					var p0 = asin(rp / r0 * Math.sin(ap)),
+						p1 = asin(rp / r1 * Math.sin(ap));
+					if ((da0 -= p0 * 2) > epsilon$1) p0 *= (cw ? 1 : -1), a00 += p0, a10 -= p0;
+					else da0 = 0, a00 = a10 = (a0 + a1) / 2;
+					if ((da1 -= p1 * 2) > epsilon$1) p1 *= (cw ? 1 : -1), a01 += p1, a11 -= p1;
+					else da1 = 0, a01 = a11 = (a0 + a1) / 2;
+				  }
+
+				  var x01 = r1 * Math.cos(a01),
+					  y01 = r1 * Math.sin(a01),
+					  x10 = r0 * Math.cos(a10),
+					  y10 = r0 * Math.sin(a10);
+
+				  // Apply rounded corners?
+				  if (rc > epsilon$1) {
+					var x11 = r1 * Math.cos(a11),
+						y11 = r1 * Math.sin(a11),
+						x00 = r0 * Math.cos(a00),
+						y00 = r0 * Math.sin(a00);
+
+					// Restrict the corner radius according to the sector angle.
+					if (da < pi$2) {
+					  var oc = da0 > epsilon$1 ? intersect(x01, y01, x00, y00, x11, y11, x10, y10) : [x10, y10],
+						  ax = x01 - oc[0],
+						  ay = y01 - oc[1],
+						  bx = x11 - oc[0],
+						  by = y11 - oc[1],
+						  kc = 1 / Math.sin(Math.acos((ax * bx + ay * by) / (Math.sqrt(ax * ax + ay * ay) * Math.sqrt(bx * bx + by * by))) / 2),
+						  lc = Math.sqrt(oc[0] * oc[0] + oc[1] * oc[1]);
+					  rc0 = Math.min(rc, (r0 - lc) / (kc - 1));
+					  rc1 = Math.min(rc, (r1 - lc) / (kc + 1));
+					}
+				  }
+
+				  // Is the sector collapsed to a line?
+				  if (!(da1 > epsilon$1)) context.moveTo(x01, y01);
+
+				  // Does the sector’s outer ring have rounded corners?
+				  else if (rc1 > epsilon$1) {
+					t0 = cornerTangents(x00, y00, x01, y01, r1, rc1, cw);
+					t1 = cornerTangents(x11, y11, x10, y10, r1, rc1, cw);
+
+					context.moveTo(t0.cx + t0.x01, t0.cy + t0.y01);
+
+					// Have the corners merged?
+					if (rc1 < rc) context.arc(t0.cx, t0.cy, rc1, Math.atan2(t0.y01, t0.x01), Math.atan2(t1.y01, t1.x01), !cw);
+
+					// Otherwise, draw the two corners and the ring.
+					else {
+					  context.arc(t0.cx, t0.cy, rc1, Math.atan2(t0.y01, t0.x01), Math.atan2(t0.y11, t0.x11), !cw);
+					  context.arc(0, 0, r1, Math.atan2(t0.cy + t0.y11, t0.cx + t0.x11), Math.atan2(t1.cy + t1.y11, t1.cx + t1.x11), !cw);
+					  context.arc(t1.cx, t1.cy, rc1, Math.atan2(t1.y11, t1.x11), Math.atan2(t1.y01, t1.x01), !cw);
+					}
+				  }
+
+				  // Or is the outer ring just a circular arc?
+				  else context.moveTo(x01, y01), context.arc(0, 0, r1, a01, a11, !cw);
+
+				  // Is there no inner ring, and it’s a circular sector?
+				  // Or perhaps it’s an annular sector collapsed due to padding?
+				  if (!(r0 > epsilon$1) || !(da0 > epsilon$1)) context.lineTo(x10, y10);
+
+				  // Does the sector’s inner ring (or point) have rounded corners?
+				  else if (rc0 > epsilon$1) {
+					t0 = cornerTangents(x10, y10, x11, y11, r0, -rc0, cw);
+					t1 = cornerTangents(x01, y01, x00, y00, r0, -rc0, cw);
+
+					context.lineTo(t0.cx + t0.x01, t0.cy + t0.y01);
+
+					// Have the corners merged?
+					if (rc0 < rc) context.arc(t0.cx, t0.cy, rc0, Math.atan2(t0.y01, t0.x01), Math.atan2(t1.y01, t1.x01), !cw);
+
+					// Otherwise, draw the two corners and the ring.
+					else {
+					  context.arc(t0.cx, t0.cy, rc0, Math.atan2(t0.y01, t0.x01), Math.atan2(t0.y11, t0.x11), !cw);
+					  context.arc(0, 0, r0, Math.atan2(t0.cy + t0.y11, t0.cx + t0.x11), Math.atan2(t1.cy + t1.y11, t1.cx + t1.x11), cw);
+					  context.arc(t1.cx, t1.cy, rc0, Math.atan2(t1.y11, t1.x11), Math.atan2(t1.y01, t1.x01), !cw);
+					}
+				  }
+
+				  // Or is the inner ring just a circular arc?
+				  else context.arc(0, 0, r0, a10, a00, cw);
+				}
+
+				context.closePath();
+
+				if (buffer) return context = null, buffer + "" || null;
+			  }
+
+			  arc.centroid = function() {
+				var r = (+innerRadius.apply(this, arguments) + +outerRadius.apply(this, arguments)) / 2,
+					a = (+startAngle.apply(this, arguments) + +endAngle.apply(this, arguments)) / 2 - pi$2 / 2;
+				return [Math.cos(a) * r, Math.sin(a) * r];
+			  };
+
+			  arc.innerRadius = function(_) {
+				return arguments.length ? (innerRadius = typeof _ === "function" ? _ : constant$2(+_), arc) : innerRadius;
+			  };
+
+			  arc.outerRadius = function(_) {
+				return arguments.length ? (outerRadius = typeof _ === "function" ? _ : constant$2(+_), arc) : outerRadius;
+			  };
+
+			  arc.cornerRadius = function(_) {
+				return arguments.length ? (cornerRadius = typeof _ === "function" ? _ : constant$2(+_), arc) : cornerRadius;
+			  };
+
+			  arc.padRadius = function(_) {
+				return arguments.length ? (padRadius = _ == null ? null : typeof _ === "function" ? _ : constant$2(+_), arc) : padRadius;
+			  };
+
+			  arc.startAngle = function(_) {
+				return arguments.length ? (startAngle = typeof _ === "function" ? _ : constant$2(+_), arc) : startAngle;
+			  };
+
+			  arc.endAngle = function(_) {
+				return arguments.length ? (endAngle = typeof _ === "function" ? _ : constant$2(+_), arc) : endAngle;
+			  };
+
+			  arc.padAngle = function(_) {
+				return arguments.length ? (padAngle = typeof _ === "function" ? _ : constant$2(+_), arc) : padAngle;
+			  };
+
+			  arc.context = function(_) {
+				return arguments.length ? ((context = _ == null ? null : _), arc) : context;
+			  };
+
+			  return arc;
+			};
+
+			function Linear(context) {
+			  this._context = context;
+			}
+
+			Linear.prototype = {
+			  areaStart: function() {
+				this._line = 0;
+			  },
+			  areaEnd: function() {
+				this._line = NaN;
+			  },
+			  lineStart: function() {
+				this._point = 0;
+			  },
+			  lineEnd: function() {
+				if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath();
+				this._line = 1 - this._line;
+			  },
+			  point: function(x, y) {
+				x = +x, y = +y;
+				switch (this._point) {
+				  case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break;
+				  case 1: this._point = 2; // proceed
+				  default: this._context.lineTo(x, y); break;
+				}
+			  }
+			};
+
+			var curveLinear = function(context) {
+			  return new Linear(context);
+			};
+
+			function x(p) {
+			  return p[0];
+			}
+
+			function y(p) {
+			  return p[1];
+			}
+
+			var line = function() {
+			  var x$$1 = x,
+				  y$$1 = y,
+				  defined = constant$2(true),
+				  context = null,
+				  curve = curveLinear,
+				  output = null;
+
+			  function line(data) {
+				var i,
+					n = data.length,
+					d,
+					defined0 = false,
+					buffer;
+
+				if (context == null) output = curve(buffer = path());
+
+				for (i = 0; i <= n; ++i) {
+				  if (!(i < n && defined(d = data[i], i, data)) === defined0) {
+					if (defined0 = !defined0) output.lineStart();
+					else output.lineEnd();
+				  }
+				  if (defined0) output.point(+x$$1(d, i, data), +y$$1(d, i, data));
+				}
+
+				if (buffer) return output = null, buffer + "" || null;
+			  }
+
+			  line.x = function(_) {
+				return arguments.length ? (x$$1 = typeof _ === "function" ? _ : constant$2(+_), line) : x$$1;
+			  };
+
+			  line.y = function(_) {
+				return arguments.length ? (y$$1 = typeof _ === "function" ? _ : constant$2(+_), line) : y$$1;
+			  };
+
+			  line.defined = function(_) {
+				return arguments.length ? (defined = typeof _ === "function" ? _ : constant$2(!!_), line) : defined;
+			  };
+
+			  line.curve = function(_) {
+				return arguments.length ? (curve = _, context != null && (output = curve(context)), line) : curve;
+			  };
+
+			  line.context = function(_) {
+				return arguments.length ? (_ == null ? context = output = null : output = curve(context = _), line) : context;
+			  };
+
+			  return line;
+			};
+
+			var area$1 = function() {
+			  var x0 = x,
+				  x1 = null,
+				  y0 = constant$2(0),
+				  y1 = y,
+				  defined = constant$2(true),
+				  context = null,
+				  curve = curveLinear,
+				  output = null;
+
+			  function area(data) {
+				var i,
+					j,
+					k,
+					n = data.length,
+					d,
+					defined0 = false,
+					buffer,
+					x0z = new Array(n),
+					y0z = new Array(n);
+
+				if (context == null) output = curve(buffer = path());
+
+				for (i = 0; i <= n; ++i) {
+				  if (!(i < n && defined(d = data[i], i, data)) === defined0) {
+					if (defined0 = !defined0) {
+					  j = i;
+					  output.areaStart();
+					  output.lineStart();
+					} else {
+					  output.lineEnd();
+					  output.lineStart();
+					  for (k = i - 1; k >= j; --k) {
+						output.point(x0z[k], y0z[k]);
+					  }
+					  output.lineEnd();
+					  output.areaEnd();
+					}
+				  }
+				  if (defined0) {
+					x0z[i] = +x0(d, i, data), y0z[i] = +y0(d, i, data);
+					output.point(x1 ? +x1(d, i, data) : x0z[i], y1 ? +y1(d, i, data) : y0z[i]);
+				  }
+				}
+
+				if (buffer) return output = null, buffer + "" || null;
+			  }
+
+			  function arealine() {
+				return line().defined(defined).curve(curve).context(context);
+			  }
+
+			  area.x = function(_) {
+				return arguments.length ? (x0 = typeof _ === "function" ? _ : constant$2(+_), x1 = null, area) : x0;
+			  };
+
+			  area.x0 = function(_) {
+				return arguments.length ? (x0 = typeof _ === "function" ? _ : constant$2(+_), area) : x0;
+			  };
+
+			  area.x1 = function(_) {
+				return arguments.length ? (x1 = _ == null ? null : typeof _ === "function" ? _ : constant$2(+_), area) : x1;
+			  };
+
+			  area.y = function(_) {
+				return arguments.length ? (y0 = typeof _ === "function" ? _ : constant$2(+_), y1 = null, area) : y0;
+			  };
+
+			  area.y0 = function(_) {
+				return arguments.length ? (y0 = typeof _ === "function" ? _ : constant$2(+_), area) : y0;
+			  };
+
+			  area.y1 = function(_) {
+				return arguments.length ? (y1 = _ == null ? null : typeof _ === "function" ? _ : constant$2(+_), area) : y1;
+			  };
+
+			  area.lineX0 =
+			  area.lineY0 = function() {
+				return arealine().x(x0).y(y0);
+			  };
+
+			  area.lineY1 = function() {
+				return arealine().x(x0).y(y1);
+			  };
+
+			  area.lineX1 = function() {
+				return arealine().x(x1).y(y0);
+			  };
+
+			  area.defined = function(_) {
+				return arguments.length ? (defined = typeof _ === "function" ? _ : constant$2(!!_), area) : defined;
+			  };
+
+			  area.curve = function(_) {
+				return arguments.length ? (curve = _, context != null && (output = curve(context)), area) : curve;
+			  };
+
+			  area.context = function(_) {
+				return arguments.length ? (_ == null ? context = output = null : output = curve(context = _), area) : context;
+			  };
+
+			  return area;
+			};
+
+			var descending$1 = function(a, b) {
+			  return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN;
+			};
+
+			var identity$1 = function(d) {
+			  return d;
+			};
+
+			var pie = function() {
+			  var value = identity$1,
+				  sortValues = descending$1,
+				  sort = null,
+				  startAngle = constant$2(0),
+				  endAngle = constant$2(tau$2),
+				  padAngle = constant$2(0);
+
+			  function pie(data) {
+				var i,
+					n = data.length,
+					j,
+					k,
+					sum = 0,
+					index = new Array(n),
+					arcs = new Array(n),
+					a0 = +startAngle.apply(this, arguments),
+					da = Math.min(tau$2, Math.max(-tau$2, endAngle.apply(this, arguments) - a0)),
+					a1,
+					p = Math.min(Math.abs(da) / n, padAngle.apply(this, arguments)),
+					pa = p * (da < 0 ? -1 : 1),
+					v;
+
+				for (i = 0; i < n; ++i) {
+				  if ((v = arcs[index[i] = i] = +value(data[i], i, data)) > 0) {
+					sum += v;
+				  }
+				}
+
+				// Optionally sort the arcs by previously-computed values or by data.
+				if (sortValues != null) index.sort(function(i, j) { return sortValues(arcs[i], arcs[j]); });
+				else if (sort != null) index.sort(function(i, j) { return sort(data[i], data[j]); });
+
+				// Compute the arcs! They are stored in the original data's order.
+				for (i = 0, k = sum ? (da - n * pa) / sum : 0; i < n; ++i, a0 = a1) {
+				  j = index[i], v = arcs[j], a1 = a0 + (v > 0 ? v * k : 0) + pa, arcs[j] = {
+					data: data[j],
+					index: i,
+					value: v,
+					startAngle: a0,
+					endAngle: a1,
+					padAngle: p
+				  };
+				}
+
+				return arcs;
+			  }
+
+			  pie.value = function(_) {
+				return arguments.length ? (value = typeof _ === "function" ? _ : constant$2(+_), pie) : value;
+			  };
+
+			  pie.sortValues = function(_) {
+				return arguments.length ? (sortValues = _, sort = null, pie) : sortValues;
+			  };
+
+			  pie.sort = function(_) {
+				return arguments.length ? (sort = _, sortValues = null, pie) : sort;
+			  };
+
+			  pie.startAngle = function(_) {
+				return arguments.length ? (startAngle = typeof _ === "function" ? _ : constant$2(+_), pie) : startAngle;
+			  };
+
+			  pie.endAngle = function(_) {
+				return arguments.length ? (endAngle = typeof _ === "function" ? _ : constant$2(+_), pie) : endAngle;
+			  };
+
+			  pie.padAngle = function(_) {
+				return arguments.length ? (padAngle = typeof _ === "function" ? _ : constant$2(+_), pie) : padAngle;
+			  };
+
+			  return pie;
+			};
+
+			var curveRadialLinear = curveRadial(curveLinear);
+
+			function Radial(curve) {
+			  this._curve = curve;
+			}
+
+			Radial.prototype = {
+			  areaStart: function() {
+				this._curve.areaStart();
+			  },
+			  areaEnd: function() {
+				this._curve.areaEnd();
+			  },
+			  lineStart: function() {
+				this._curve.lineStart();
+			  },
+			  lineEnd: function() {
+				this._curve.lineEnd();
+			  },
+			  point: function(a, r) {
+				this._curve.point(r * Math.sin(a), r * -Math.cos(a));
+			  }
+			};
+
+			function curveRadial(curve) {
+
+			  function radial(context) {
+				return new Radial(curve(context));
+			  }
+
+			  radial._curve = curve;
+
+			  return radial;
+			}
+
+			function radialLine(l) {
+			  var c = l.curve;
+
+			  l.angle = l.x, delete l.x;
+			  l.radius = l.y, delete l.y;
+
+			  l.curve = function(_) {
+				return arguments.length ? c(curveRadial(_)) : c()._curve;
+			  };
+
+			  return l;
+			}
+
+			var radialLine$1 = function() {
+			  return radialLine(line().curve(curveRadialLinear));
+			};
+
+			var radialArea = function() {
+			  var a = area$1().curve(curveRadialLinear),
+				  c = a.curve,
+				  x0 = a.lineX0,
+				  x1 = a.lineX1,
+				  y0 = a.lineY0,
+				  y1 = a.lineY1;
+
+			  a.angle = a.x, delete a.x;
+			  a.startAngle = a.x0, delete a.x0;
+			  a.endAngle = a.x1, delete a.x1;
+			  a.radius = a.y, delete a.y;
+			  a.innerRadius = a.y0, delete a.y0;
+			  a.outerRadius = a.y1, delete a.y1;
+			  a.lineStartAngle = function() { return radialLine(x0()); }, delete a.lineX0;
+			  a.lineEndAngle = function() { return radialLine(x1()); }, delete a.lineX1;
+			  a.lineInnerRadius = function() { return radialLine(y0()); }, delete a.lineY0;
+			  a.lineOuterRadius = function() { return radialLine(y1()); }, delete a.lineY1;
+
+			  a.curve = function(_) {
+				return arguments.length ? c(curveRadial(_)) : c()._curve;
+			  };
+
+			  return a;
+			};
+
+			var circle = {
+			  draw: function(context, size) {
+				var r = Math.sqrt(size / pi$2);
+				context.moveTo(r, 0);
+				context.arc(0, 0, r, 0, tau$2);
+			  }
+			};
+
+			var cross$1 = {
+			  draw: function(context, size) {
+				var r = Math.sqrt(size / 5) / 2;
+				context.moveTo(-3 * r, -r);
+				context.lineTo(-r, -r);
+				context.lineTo(-r, -3 * r);
+				context.lineTo(r, -3 * r);
+				context.lineTo(r, -r);
+				context.lineTo(3 * r, -r);
+				context.lineTo(3 * r, r);
+				context.lineTo(r, r);
+				context.lineTo(r, 3 * r);
+				context.lineTo(-r, 3 * r);
+				context.lineTo(-r, r);
+				context.lineTo(-3 * r, r);
+				context.closePath();
+			  }
+			};
+
+			var tan30 = Math.sqrt(1 / 3);
+			var tan30_2 = tan30 * 2;
+
+			var diamond = {
+			  draw: function(context, size) {
+				var y = Math.sqrt(size / tan30_2),
+					x = y * tan30;
+				context.moveTo(0, -y);
+				context.lineTo(x, 0);
+				context.lineTo(0, y);
+				context.lineTo(-x, 0);
+				context.closePath();
+			  }
+			};
+
+			var ka = 0.89081309152928522810;
+			var kr = Math.sin(pi$2 / 10) / Math.sin(7 * pi$2 / 10);
+			var kx = Math.sin(tau$2 / 10) * kr;
+			var ky = -Math.cos(tau$2 / 10) * kr;
+
+			var star = {
+			  draw: function(context, size) {
+				var r = Math.sqrt(size * ka),
+					x = kx * r,
+					y = ky * r;
+				context.moveTo(0, -r);
+				context.lineTo(x, y);
+				for (var i = 1; i < 5; ++i) {
+				  var a = tau$2 * i / 5,
+					  c = Math.cos(a),
+					  s = Math.sin(a);
+				  context.lineTo(s * r, -c * r);
+				  context.lineTo(c * x - s * y, s * x + c * y);
+				}
+				context.closePath();
+			  }
+			};
+
+			var square = {
+			  draw: function(context, size) {
+				var w = Math.sqrt(size),
+					x = -w / 2;
+				context.rect(x, x, w, w);
+			  }
+			};
+
+			var sqrt3 = Math.sqrt(3);
+
+			var triangle = {
+			  draw: function(context, size) {
+				var y = -Math.sqrt(size / (sqrt3 * 3));
+				context.moveTo(0, y * 2);
+				context.lineTo(-sqrt3 * y, -y);
+				context.lineTo(sqrt3 * y, -y);
+				context.closePath();
+			  }
+			};
+
+			var c = -0.5;
+			var s = Math.sqrt(3) / 2;
+			var k = 1 / Math.sqrt(12);
+			var a = (k / 2 + 1) * 3;
+
+			var wye = {
+			  draw: function(context, size) {
+				var r = Math.sqrt(size / a),
+					x0 = r / 2,
+					y0 = r * k,
+					x1 = x0,
+					y1 = r * k + r,
+					x2 = -x1,
+					y2 = y1;
+				context.moveTo(x0, y0);
+				context.lineTo(x1, y1);
+				context.lineTo(x2, y2);
+				context.lineTo(c * x0 - s * y0, s * x0 + c * y0);
+				context.lineTo(c * x1 - s * y1, s * x1 + c * y1);
+				context.lineTo(c * x2 - s * y2, s * x2 + c * y2);
+				context.lineTo(c * x0 + s * y0, c * y0 - s * x0);
+				context.lineTo(c * x1 + s * y1, c * y1 - s * x1);
+				context.lineTo(c * x2 + s * y2, c * y2 - s * x2);
+				context.closePath();
+			  }
+			};
+
+			var symbols = [
+			  circle,
+			  cross$1,
+			  diamond,
+			  square,
+			  star,
+			  triangle,
+			  wye
+			];
+
+			var symbol = function() {
+			  var type = constant$2(circle),
+				  size = constant$2(64),
+				  context = null;
+
+			  function symbol() {
+				var buffer;
+				if (!context) context = buffer = path();
+				type.apply(this, arguments).draw(context, +size.apply(this, arguments));
+				if (buffer) return context = null, buffer + "" || null;
+			  }
+
+			  symbol.type = function(_) {
+				return arguments.length ? (type = typeof _ === "function" ? _ : constant$2(_), symbol) : type;
+			  };
+
+			  symbol.size = function(_) {
+				return arguments.length ? (size = typeof _ === "function" ? _ : constant$2(+_), symbol) : size;
+			  };
+
+			  symbol.context = function(_) {
+				return arguments.length ? (context = _ == null ? null : _, symbol) : context;
+			  };
+
+			  return symbol;
+			};
+
+			var noop = function() {};
+
+			function point(that, x, y) {
+			  that._context.bezierCurveTo(
+				(2 * that._x0 + that._x1) / 3,
+				(2 * that._y0 + that._y1) / 3,
+				(that._x0 + 2 * that._x1) / 3,
+				(that._y0 + 2 * that._y1) / 3,
+				(that._x0 + 4 * that._x1 + x) / 6,
+				(that._y0 + 4 * that._y1 + y) / 6
+			  );
+			}
+
+			function Basis(context) {
+			  this._context = context;
+			}
+
+			Basis.prototype = {
+			  areaStart: function() {
+				this._line = 0;
+			  },
+			  areaEnd: function() {
+				this._line = NaN;
+			  },
+			  lineStart: function() {
+				this._x0 = this._x1 =
+				this._y0 = this._y1 = NaN;
+				this._point = 0;
+			  },
+			  lineEnd: function() {
+				switch (this._point) {
+				  case 3: point(this, this._x1, this._y1); // proceed
+				  case 2: this._context.lineTo(this._x1, this._y1); break;
+				}
+				if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath();
+				this._line = 1 - this._line;
+			  },
+			  point: function(x, y) {
+				x = +x, y = +y;
+				switch (this._point) {
+				  case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break;
+				  case 1: this._point = 2; break;
+				  case 2: this._point = 3; this._context.lineTo((5 * this._x0 + this._x1) / 6, (5 * this._y0 + this._y1) / 6); // proceed
+				  default: point(this, x, y); break;
+				}
+				this._x0 = this._x1, this._x1 = x;
+				this._y0 = this._y1, this._y1 = y;
+			  }
+			};
+
+			var basis = function(context) {
+			  return new Basis(context);
+			};
+
+			function BasisClosed(context) {
+			  this._context = context;
+			}
+
+			BasisClosed.prototype = {
+			  areaStart: noop,
+			  areaEnd: noop,
+			  lineStart: function() {
+				this._x0 = this._x1 = this._x2 = this._x3 = this._x4 =
+				this._y0 = this._y1 = this._y2 = this._y3 = this._y4 = NaN;
+				this._point = 0;
+			  },
+			  lineEnd: function() {
+				switch (this._point) {
+				  case 1: {
+					this._context.moveTo(this._x2, this._y2);
+					this._context.closePath();
+					break;
+				  }
+				  case 2: {
+					this._context.moveTo((this._x2 + 2 * this._x3) / 3, (this._y2 + 2 * this._y3) / 3);
+					this._context.lineTo((this._x3 + 2 * this._x2) / 3, (this._y3 + 2 * this._y2) / 3);
+					this._context.closePath();
+					break;
+				  }
+				  case 3: {
+					this.point(this._x2, this._y2);
+					this.point(this._x3, this._y3);
+					this.point(this._x4, this._y4);
+					break;
+				  }
+				}
+			  },
+			  point: function(x, y) {
+				x = +x, y = +y;
+				switch (this._point) {
+				  case 0: this._point = 1; this._x2 = x, this._y2 = y; break;
+				  case 1: this._point = 2; this._x3 = x, this._y3 = y; break;
+				  case 2: this._point = 3; this._x4 = x, this._y4 = y; this._context.moveTo((this._x0 + 4 * this._x1 + x) / 6, (this._y0 + 4 * this._y1 + y) / 6); break;
+				  default: point(this, x, y); break;
+				}
+				this._x0 = this._x1, this._x1 = x;
+				this._y0 = this._y1, this._y1 = y;
+			  }
+			};
+
+			var basisClosed = function(context) {
+			  return new BasisClosed(context);
+			};
+
+			function BasisOpen(context) {
+			  this._context = context;
+			}
+
+			BasisOpen.prototype = {
+			  areaStart: function() {
+				this._line = 0;
+			  },
+			  areaEnd: function() {
+				this._line = NaN;
+			  },
+			  lineStart: function() {
+				this._x0 = this._x1 =
+				this._y0 = this._y1 = NaN;
+				this._point = 0;
+			  },
+			  lineEnd: function() {
+				if (this._line || (this._line !== 0 && this._point === 3)) this._context.closePath();
+				this._line = 1 - this._line;
+			  },
+			  point: function(x, y) {
+				x = +x, y = +y;
+				switch (this._point) {
+				  case 0: this._point = 1; break;
+				  case 1: this._point = 2; break;
+				  case 2: this._point = 3; var x0 = (this._x0 + 4 * this._x1 + x) / 6, y0 = (this._y0 + 4 * this._y1 + y) / 6; this._line ? this._context.lineTo(x0, y0) : this._context.moveTo(x0, y0); break;
+				  case 3: this._point = 4; // proceed
+				  default: point(this, x, y); break;
+				}
+				this._x0 = this._x1, this._x1 = x;
+				this._y0 = this._y1, this._y1 = y;
+			  }
+			};
+
+			var basisOpen = function(context) {
+			  return new BasisOpen(context);
+			};
+
+			function Bundle(context, beta) {
+			  this._basis = new Basis(context);
+			  this._beta = beta;
+			}
+
+			Bundle.prototype = {
+			  lineStart: function() {
+				this._x = [];
+				this._y = [];
+				this._basis.lineStart();
+			  },
+			  lineEnd: function() {
+				var x = this._x,
+					y = this._y,
+					j = x.length - 1;
+
+				if (j > 0) {
+				  var x0 = x[0],
+					  y0 = y[0],
+					  dx = x[j] - x0,
+					  dy = y[j] - y0,
+					  i = -1,
+					  t;
+
+				  while (++i <= j) {
+					t = i / j;
+					this._basis.point(
+					  this._beta * x[i] + (1 - this._beta) * (x0 + t * dx),
+					  this._beta * y[i] + (1 - this._beta) * (y0 + t * dy)
+					);
+				  }
+				}
+
+				this._x = this._y = null;
+				this._basis.lineEnd();
+			  },
+			  point: function(x, y) {
+				this._x.push(+x);
+				this._y.push(+y);
+			  }
+			};
+
+			var bundle = (function custom(beta) {
+
+			  function bundle(context) {
+				return beta === 1 ? new Basis(context) : new Bundle(context, beta);
+			  }
+
+			  bundle.beta = function(beta) {
+				return custom(+beta);
+			  };
+
+			  return bundle;
+			})(0.85);
+
+			function point$1(that, x, y) {
+			  that._context.bezierCurveTo(
+				that._x1 + that._k * (that._x2 - that._x0),
+				that._y1 + that._k * (that._y2 - that._y0),
+				that._x2 + that._k * (that._x1 - x),
+				that._y2 + that._k * (that._y1 - y),
+				that._x2,
+				that._y2
+			  );
+			}
+
+			function Cardinal(context, tension) {
+			  this._context = context;
+			  this._k = (1 - tension) / 6;
+			}
+
+			Cardinal.prototype = {
+			  areaStart: function() {
+				this._line = 0;
+			  },
+			  areaEnd: function() {
+				this._line = NaN;
+			  },
+			  lineStart: function() {
+				this._x0 = this._x1 = this._x2 =
+				this._y0 = this._y1 = this._y2 = NaN;
+				this._point = 0;
+			  },
+			  lineEnd: function() {
+				switch (this._point) {
+				  case 2: this._context.lineTo(this._x2, this._y2); break;
+				  case 3: point$1(this, this._x1, this._y1); break;
+				}
+				if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath();
+				this._line = 1 - this._line;
+			  },
+			  point: function(x, y) {
+				x = +x, y = +y;
+				switch (this._point) {
+				  case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break;
+				  case 1: this._point = 2; this._x1 = x, this._y1 = y; break;
+				  case 2: this._point = 3; // proceed
+				  default: point$1(this, x, y); break;
+				}
+				this._x0 = this._x1, this._x1 = this._x2, this._x2 = x;
+				this._y0 = this._y1, this._y1 = this._y2, this._y2 = y;
+			  }
+			};
+
+			var cardinal = (function custom(tension) {
+
+			  function cardinal(context) {
+				return new Cardinal(context, tension);
+			  }
+
+			  cardinal.tension = function(tension) {
+				return custom(+tension);
+			  };
+
+			  return cardinal;
+			})(0);
+
+			function CardinalClosed(context, tension) {
+			  this._context = context;
+			  this._k = (1 - tension) / 6;
+			}
+
+			CardinalClosed.prototype = {
+			  areaStart: noop,
+			  areaEnd: noop,
+			  lineStart: function() {
+				this._x0 = this._x1 = this._x2 = this._x3 = this._x4 = this._x5 =
+				this._y0 = this._y1 = this._y2 = this._y3 = this._y4 = this._y5 = NaN;
+				this._point = 0;
+			  },
+			  lineEnd: function() {
+				switch (this._point) {
+				  case 1: {
+					this._context.moveTo(this._x3, this._y3);
+					this._context.closePath();
+					break;
+				  }
+				  case 2: {
+					this._context.lineTo(this._x3, this._y3);
+					this._context.closePath();
+					break;
+				  }
+				  case 3: {
+					this.point(this._x3, this._y3);
+					this.point(this._x4, this._y4);
+					this.point(this._x5, this._y5);
+					break;
+				  }
+				}
+			  },
+			  point: function(x, y) {
+				x = +x, y = +y;
+				switch (this._point) {
+				  case 0: this._point = 1; this._x3 = x, this._y3 = y; break;
+				  case 1: this._point = 2; this._context.moveTo(this._x4 = x, this._y4 = y); break;
+				  case 2: this._point = 3; this._x5 = x, this._y5 = y; break;
+				  default: point$1(this, x, y); break;
+				}
+				this._x0 = this._x1, this._x1 = this._x2, this._x2 = x;
+				this._y0 = this._y1, this._y1 = this._y2, this._y2 = y;
+			  }
+			};
+
+			var cardinalClosed = (function custom(tension) {
+
+			  function cardinal(context) {
+				return new CardinalClosed(context, tension);
+			  }
+
+			  cardinal.tension = function(tension) {
+				return custom(+tension);
+			  };
+
+			  return cardinal;
+			})(0);
+
+			function CardinalOpen(context, tension) {
+			  this._context = context;
+			  this._k = (1 - tension) / 6;
+			}
+
+			CardinalOpen.prototype = {
+			  areaStart: function() {
+				this._line = 0;
+			  },
+			  areaEnd: function() {
+				this._line = NaN;
+			  },
+			  lineStart: function() {
+				this._x0 = this._x1 = this._x2 =
+				this._y0 = this._y1 = this._y2 = NaN;
+				this._point = 0;
+			  },
+			  lineEnd: function() {
+				if (this._line || (this._line !== 0 && this._point === 3)) this._context.closePath();
+				this._line = 1 - this._line;
+			  },
+			  point: function(x, y) {
+				x = +x, y = +y;
+				switch (this._point) {
+				  case 0: this._point = 1; break;
+				  case 1: this._point = 2; break;
+				  case 2: this._point = 3; this._line ? this._context.lineTo(this._x2, this._y2) : this._context.moveTo(this._x2, this._y2); break;
+				  case 3: this._point = 4; // proceed
+				  default: point$1(this, x, y); break;
+				}
+				this._x0 = this._x1, this._x1 = this._x2, this._x2 = x;
+				this._y0 = this._y1, this._y1 = this._y2, this._y2 = y;
+			  }
+			};
+
+			var cardinalOpen = (function custom(tension) {
+
+			  function cardinal(context) {
+				return new CardinalOpen(context, tension);
+			  }
+
+			  cardinal.tension = function(tension) {
+				return custom(+tension);
+			  };
+
+			  return cardinal;
+			})(0);
+
+			function point$2(that, x, y) {
+			  var x1 = that._x1,
+				  y1 = that._y1,
+				  x2 = that._x2,
+				  y2 = that._y2;
+
+			  if (that._l01_a > epsilon$1) {
+				var a = 2 * that._l01_2a + 3 * that._l01_a * that._l12_a + that._l12_2a,
+					n = 3 * that._l01_a * (that._l01_a + that._l12_a);
+				x1 = (x1 * a - that._x0 * that._l12_2a + that._x2 * that._l01_2a) / n;
+				y1 = (y1 * a - that._y0 * that._l12_2a + that._y2 * that._l01_2a) / n;
+			  }
+
+			  if (that._l23_a > epsilon$1) {
+				var b = 2 * that._l23_2a + 3 * that._l23_a * that._l12_a + that._l12_2a,
+					m = 3 * that._l23_a * (that._l23_a + that._l12_a);
+				x2 = (x2 * b + that._x1 * that._l23_2a - x * that._l12_2a) / m;
+				y2 = (y2 * b + that._y1 * that._l23_2a - y * that._l12_2a) / m;
+			  }
+
+			  that._context.bezierCurveTo(x1, y1, x2, y2, that._x2, that._y2);
+			}
+
+			function CatmullRom(context, alpha) {
+			  this._context = context;
+			  this._alpha = alpha;
+			}
+
+			CatmullRom.prototype = {
+			  areaStart: function() {
+				this._line = 0;
+			  },
+			  areaEnd: function() {
+				this._line = NaN;
+			  },
+			  lineStart: function() {
+				this._x0 = this._x1 = this._x2 =
+				this._y0 = this._y1 = this._y2 = NaN;
+				this._l01_a = this._l12_a = this._l23_a =
+				this._l01_2a = this._l12_2a = this._l23_2a =
+				this._point = 0;
+			  },
+			  lineEnd: function() {
+				switch (this._point) {
+				  case 2: this._context.lineTo(this._x2, this._y2); break;
+				  case 3: this.point(this._x2, this._y2); break;
+				}
+				if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath();
+				this._line = 1 - this._line;
+			  },
+			  point: function(x, y) {
+				x = +x, y = +y;
+
+				if (this._point) {
+				  var x23 = this._x2 - x,
+					  y23 = this._y2 - y;
+				  this._l23_a = Math.sqrt(this._l23_2a = Math.pow(x23 * x23 + y23 * y23, this._alpha));
+				}
+
+				switch (this._point) {
+				  case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break;
+				  case 1: this._point = 2; break;
+				  case 2: this._point = 3; // proceed
+				  default: point$2(this, x, y); break;
+				}
+
+				this._l01_a = this._l12_a, this._l12_a = this._l23_a;
+				this._l01_2a = this._l12_2a, this._l12_2a = this._l23_2a;
+				this._x0 = this._x1, this._x1 = this._x2, this._x2 = x;
+				this._y0 = this._y1, this._y1 = this._y2, this._y2 = y;
+			  }
+			};
+
+			var catmullRom = (function custom(alpha) {
+
+			  function catmullRom(context) {
+				return alpha ? new CatmullRom(context, alpha) : new Cardinal(context, 0);
+			  }
+
+			  catmullRom.alpha = function(alpha) {
+				return custom(+alpha);
+			  };
+
+			  return catmullRom;
+			})(0.5);
+
+			function CatmullRomClosed(context, alpha) {
+			  this._context = context;
+			  this._alpha = alpha;
+			}
+
+			CatmullRomClosed.prototype = {
+			  areaStart: noop,
+			  areaEnd: noop,
+			  lineStart: function() {
+				this._x0 = this._x1 = this._x2 = this._x3 = this._x4 = this._x5 =
+				this._y0 = this._y1 = this._y2 = this._y3 = this._y4 = this._y5 = NaN;
+				this._l01_a = this._l12_a = this._l23_a =
+				this._l01_2a = this._l12_2a = this._l23_2a =
+				this._point = 0;
+			  },
+			  lineEnd: function() {
+				switch (this._point) {
+				  case 1: {
+					this._context.moveTo(this._x3, this._y3);
+					this._context.closePath();
+					break;
+				  }
+				  case 2: {
+					this._context.lineTo(this._x3, this._y3);
+					this._context.closePath();
+					break;
+				  }
+				  case 3: {
+					this.point(this._x3, this._y3);
+					this.point(this._x4, this._y4);
+					this.point(this._x5, this._y5);
+					break;
+				  }
+				}
+			  },
+			  point: function(x, y) {
+				x = +x, y = +y;
+
+				if (this._point) {
+				  var x23 = this._x2 - x,
+					  y23 = this._y2 - y;
+				  this._l23_a = Math.sqrt(this._l23_2a = Math.pow(x23 * x23 + y23 * y23, this._alpha));
+				}
+
+				switch (this._point) {
+				  case 0: this._point = 1; this._x3 = x, this._y3 = y; break;
+				  case 1: this._point = 2; this._context.moveTo(this._x4 = x, this._y4 = y); break;
+				  case 2: this._point = 3; this._x5 = x, this._y5 = y; break;
+				  default: point$2(this, x, y); break;
+				}
+
+				this._l01_a = this._l12_a, this._l12_a = this._l23_a;
+				this._l01_2a = this._l12_2a, this._l12_2a = this._l23_2a;
+				this._x0 = this._x1, this._x1 = this._x2, this._x2 = x;
+				this._y0 = this._y1, this._y1 = this._y2, this._y2 = y;
+			  }
+			};
+
+			var catmullRomClosed = (function custom(alpha) {
+
+			  function catmullRom(context) {
+				return alpha ? new CatmullRomClosed(context, alpha) : new CardinalClosed(context, 0);
+			  }
+
+			  catmullRom.alpha = function(alpha) {
+				return custom(+alpha);
+			  };
+
+			  return catmullRom;
+			})(0.5);
+
+			function CatmullRomOpen(context, alpha) {
+			  this._context = context;
+			  this._alpha = alpha;
+			}
+
+			CatmullRomOpen.prototype = {
+			  areaStart: function() {
+				this._line = 0;
+			  },
+			  areaEnd: function() {
+				this._line = NaN;
+			  },
+			  lineStart: function() {
+				this._x0 = this._x1 = this._x2 =
+				this._y0 = this._y1 = this._y2 = NaN;
+				this._l01_a = this._l12_a = this._l23_a =
+				this._l01_2a = this._l12_2a = this._l23_2a =
+				this._point = 0;
+			  },
+			  lineEnd: function() {
+				if (this._line || (this._line !== 0 && this._point === 3)) this._context.closePath();
+				this._line = 1 - this._line;
+			  },
+			  point: function(x, y) {
+				x = +x, y = +y;
+
+				if (this._point) {
+				  var x23 = this._x2 - x,
+					  y23 = this._y2 - y;
+				  this._l23_a = Math.sqrt(this._l23_2a = Math.pow(x23 * x23 + y23 * y23, this._alpha));
+				}
+
+				switch (this._point) {
+				  case 0: this._point = 1; break;
+				  case 1: this._point = 2; break;
+				  case 2: this._point = 3; this._line ? this._context.lineTo(this._x2, this._y2) : this._context.moveTo(this._x2, this._y2); break;
+				  case 3: this._point = 4; // proceed
+				  default: point$2(this, x, y); break;
+				}
+
+				this._l01_a = this._l12_a, this._l12_a = this._l23_a;
+				this._l01_2a = this._l12_2a, this._l12_2a = this._l23_2a;
+				this._x0 = this._x1, this._x1 = this._x2, this._x2 = x;
+				this._y0 = this._y1, this._y1 = this._y2, this._y2 = y;
+			  }
+			};
+
+			var catmullRomOpen = (function custom(alpha) {
+
+			  function catmullRom(context) {
+				return alpha ? new CatmullRomOpen(context, alpha) : new CardinalOpen(context, 0);
+			  }
+
+			  catmullRom.alpha = function(alpha) {
+				return custom(+alpha);
+			  };
+
+			  return catmullRom;
+			})(0.5);
+
+			function LinearClosed(context) {
+			  this._context = context;
+			}
+
+			LinearClosed.prototype = {
+			  areaStart: noop,
+			  areaEnd: noop,
+			  lineStart: function() {
+				this._point = 0;
+			  },
+			  lineEnd: function() {
+				if (this._point) this._context.closePath();
+			  },
+			  point: function(x, y) {
+				x = +x, y = +y;
+				if (this._point) this._context.lineTo(x, y);
+				else this._point = 1, this._context.moveTo(x, y);
+			  }
+			};
+
+			var linearClosed = function(context) {
+			  return new LinearClosed(context);
+			};
+
+			function sign(x) {
+			  return x < 0 ? -1 : 1;
+			}
+
+			// Calculate the slopes of the tangents (Hermite-type interpolation) based on
+			// the following paper: Steffen, M. 1990. A Simple Method for Monotonic
+			// Interpolation in One Dimension. Astronomy and Astrophysics, Vol. 239, NO.
+			// NOV(II), P. 443, 1990.
+			function slope3(that, x2, y2) {
+			  var h0 = that._x1 - that._x0,
+				  h1 = x2 - that._x1,
+				  s0 = (that._y1 - that._y0) / (h0 || h1 < 0 && -0),
+				  s1 = (y2 - that._y1) / (h1 || h0 < 0 && -0),
+				  p = (s0 * h1 + s1 * h0) / (h0 + h1);
+			  return (sign(s0) + sign(s1)) * Math.min(Math.abs(s0), Math.abs(s1), 0.5 * Math.abs(p)) || 0;
+			}
+
+			// Calculate a one-sided slope.
+			function slope2(that, t) {
+			  var h = that._x1 - that._x0;
+			  return h ? (3 * (that._y1 - that._y0) / h - t) / 2 : t;
+			}
+
+			// According to https://en.wikipedia.org/wiki/Cubic_Hermite_spline#Representations
+			// "you can express cubic Hermite interpolation in terms of cubic Bézier curves
+			// with respect to the four values p0, p0 + m0 / 3, p1 - m1 / 3, p1".
+			function point$3(that, t0, t1) {
+			  var x0 = that._x0,
+				  y0 = that._y0,
+				  x1 = that._x1,
+				  y1 = that._y1,
+				  dx = (x1 - x0) / 3;
+			  that._context.bezierCurveTo(x0 + dx, y0 + dx * t0, x1 - dx, y1 - dx * t1, x1, y1);
+			}
+
+			function MonotoneX(context) {
+			  this._context = context;
+			}
+
+			MonotoneX.prototype = {
+			  areaStart: function() {
+				this._line = 0;
+			  },
+			  areaEnd: function() {
+				this._line = NaN;
+			  },
+			  lineStart: function() {
+				this._x0 = this._x1 =
+				this._y0 = this._y1 =
+				this._t0 = NaN;
+				this._point = 0;
+			  },
+			  lineEnd: function() {
+				switch (this._point) {
+				  case 2: this._context.lineTo(this._x1, this._y1); break;
+				  case 3: point$3(this, this._t0, slope2(this, this._t0)); break;
+				}
+				if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath();
+				this._line = 1 - this._line;
+			  },
+			  point: function(x, y) {
+				var t1 = NaN;
+
+				x = +x, y = +y;
+				if (x === this._x1 && y === this._y1) return; // Ignore coincident points.
+				switch (this._point) {
+				  case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break;
+				  case 1: this._point = 2; break;
+				  case 2: this._point = 3; point$3(this, slope2(this, t1 = slope3(this, x, y)), t1); break;
+				  default: point$3(this, this._t0, t1 = slope3(this, x, y)); break;
+				}
+
+				this._x0 = this._x1, this._x1 = x;
+				this._y0 = this._y1, this._y1 = y;
+				this._t0 = t1;
+			  }
+			};
+
+			function MonotoneY(context) {
+			  this._context = new ReflectContext(context);
+			}
+
+			(MonotoneY.prototype = Object.create(MonotoneX.prototype)).point = function(x, y) {
+			  MonotoneX.prototype.point.call(this, y, x);
+			};
+
+			function ReflectContext(context) {
+			  this._context = context;
+			}
+
+			ReflectContext.prototype = {
+			  moveTo: function(x, y) { this._context.moveTo(y, x); },
+			  closePath: function() { this._context.closePath(); },
+			  lineTo: function(x, y) { this._context.lineTo(y, x); },
+			  bezierCurveTo: function(x1, y1, x2, y2, x, y) { this._context.bezierCurveTo(y1, x1, y2, x2, y, x); }
+			};
+
+			function monotoneX(context) {
+			  return new MonotoneX(context);
+			}
+
+			function monotoneY(context) {
+			  return new MonotoneY(context);
+			}
+
+			function Natural(context) {
+			  this._context = context;
+			}
+
+			Natural.prototype = {
+			  areaStart: function() {
+				this._line = 0;
+			  },
+			  areaEnd: function() {
+				this._line = NaN;
+			  },
+			  lineStart: function() {
+				this._x = [];
+				this._y = [];
+			  },
+			  lineEnd: function() {
+				var x = this._x,
+					y = this._y,
+					n = x.length;
+
+				if (n) {
+				  this._line ? this._context.lineTo(x[0], y[0]) : this._context.moveTo(x[0], y[0]);
+				  if (n === 2) {
+					this._context.lineTo(x[1], y[1]);
+				  } else {
+					var px = controlPoints(x),
+						py = controlPoints(y);
+					for (var i0 = 0, i1 = 1; i1 < n; ++i0, ++i1) {
+					  this._context.bezierCurveTo(px[0][i0], py[0][i0], px[1][i0], py[1][i0], x[i1], y[i1]);
+					}
+				  }
+				}
+
+				if (this._line || (this._line !== 0 && n === 1)) this._context.closePath();
+				this._line = 1 - this._line;
+				this._x = this._y = null;
+			  },
+			  point: function(x, y) {
+				this._x.push(+x);
+				this._y.push(+y);
+			  }
+			};
+
+			// See https://www.particleincell.com/2012/bezier-splines/ for derivation.
+			function controlPoints(x) {
+			  var i,
+				  n = x.length - 1,
+				  m,
+				  a = new Array(n),
+				  b = new Array(n),
+				  r = new Array(n);
+			  a[0] = 0, b[0] = 2, r[0] = x[0] + 2 * x[1];
+			  for (i = 1; i < n - 1; ++i) a[i] = 1, b[i] = 4, r[i] = 4 * x[i] + 2 * x[i + 1];
+			  a[n - 1] = 2, b[n - 1] = 7, r[n - 1] = 8 * x[n - 1] + x[n];
+			  for (i = 1; i < n; ++i) m = a[i] / b[i - 1], b[i] -= m, r[i] -= m * r[i - 1];
+			  a[n - 1] = r[n - 1] / b[n - 1];
+			  for (i = n - 2; i >= 0; --i) a[i] = (r[i] - a[i + 1]) / b[i];
+			  b[n - 1] = (x[n] + a[n - 1]) / 2;
+			  for (i = 0; i < n - 1; ++i) b[i] = 2 * x[i + 1] - a[i + 1];
+			  return [a, b];
+			}
+
+			var natural = function(context) {
+			  return new Natural(context);
+			};
+
+			function Step(context, t) {
+			  this._context = context;
+			  this._t = t;
+			}
+
+			Step.prototype = {
+			  areaStart: function() {
+				this._line = 0;
+			  },
+			  areaEnd: function() {
+				this._line = NaN;
+			  },
+			  lineStart: function() {
+				this._x = this._y = NaN;
+				this._point = 0;
+			  },
+			  lineEnd: function() {
+				if (0 < this._t && this._t < 1 && this._point === 2) this._context.lineTo(this._x, this._y);
+				if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath();
+				if (this._line >= 0) this._t = 1 - this._t, this._line = 1 - this._line;
+			  },
+			  point: function(x, y) {
+				x = +x, y = +y;
+				switch (this._point) {
+				  case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break;
+				  case 1: this._point = 2; // proceed
+				  default: {
+					if (this._t <= 0) {
+					  this._context.lineTo(this._x, y);
+					  this._context.lineTo(x, y);
+					} else {
+					  var x1 = this._x * (1 - this._t) + x * this._t;
+					  this._context.lineTo(x1, this._y);
+					  this._context.lineTo(x1, y);
+					}
+					break;
+				  }
+				}
+				this._x = x, this._y = y;
+			  }
+			};
+
+			var step = function(context) {
+			  return new Step(context, 0.5);
+			};
+
+			function stepBefore(context) {
+			  return new Step(context, 0);
+			}
+
+			function stepAfter(context) {
+			  return new Step(context, 1);
+			}
+
+			var slice$2 = Array.prototype.slice;
+
+			var none = function(series, order) {
+			  if (!((n = series.length) > 1)) return;
+			  for (var i = 1, s0, s1 = series[order[0]], n, m = s1.length; i < n; ++i) {
+				s0 = s1, s1 = series[order[i]];
+				for (var j = 0; j < m; ++j) {
+				  s1[j][1] += s1[j][0] = isNaN(s0[j][1]) ? s0[j][0] : s0[j][1];
+				}
+			  }
+			};
+
+			var none$1 = function(series) {
+			  var n = series.length, o = new Array(n);
+			  while (--n >= 0) o[n] = n;
+			  return o;
+			};
+
+			function stackValue(d, key) {
+			  return d[key];
+			}
+
+			var stack = function() {
+			  var keys = constant$2([]),
+				  order = none$1,
+				  offset = none,
+				  value = stackValue;
+
+			  function stack(data) {
+				var kz = keys.apply(this, arguments),
+					i,
+					m = data.length,
+					n = kz.length,
+					sz = new Array(n),
+					oz;
+
+				for (i = 0; i < n; ++i) {
+				  for (var ki = kz[i], si = sz[i] = new Array(m), j = 0, sij; j < m; ++j) {
+					si[j] = sij = [0, +value(data[j], ki, j, data)];
+					sij.data = data[j];
+				  }
+				  si.key = ki;
+				}
+
+				for (i = 0, oz = order(sz); i < n; ++i) {
+				  sz[oz[i]].index = i;
+				}
+
+				offset(sz, oz);
+				return sz;
+			  }
+
+			  stack.keys = function(_) {
+				return arguments.length ? (keys = typeof _ === "function" ? _ : constant$2(slice$2.call(_)), stack) : keys;
+			  };
+
+			  stack.value = function(_) {
+				return arguments.length ? (value = typeof _ === "function" ? _ : constant$2(+_), stack) : value;
+			  };
+
+			  stack.order = function(_) {
+				return arguments.length ? (order = _ == null ? none$1 : typeof _ === "function" ? _ : constant$2(slice$2.call(_)), stack) : order;
+			  };
+
+			  stack.offset = function(_) {
+				return arguments.length ? (offset = _ == null ? none : _, stack) : offset;
+			  };
+
+			  return stack;
+			};
+
+			var expand = function(series, order) {
+			  if (!((n = series.length) > 0)) return;
+			  for (var i, n, j = 0, m = series[0].length, y; j < m; ++j) {
+				for (y = i = 0; i < n; ++i) y += series[i][j][1] || 0;
+				if (y) for (i = 0; i < n; ++i) series[i][j][1] /= y;
+			  }
+			  none(series, order);
+			};
+
+			var silhouette = function(series, order) {
+			  if (!((n = series.length) > 0)) return;
+			  for (var j = 0, s0 = series[order[0]], n, m = s0.length; j < m; ++j) {
+				for (var i = 0, y = 0; i < n; ++i) y += series[i][j][1] || 0;
+				s0[j][1] += s0[j][0] = -y / 2;
+			  }
+			  none(series, order);
+			};
+
+			var wiggle = function(series, order) {
+			  if (!((n = series.length) > 0) || !((m = (s0 = series[order[0]]).length) > 0)) return;
+			  for (var y = 0, j = 1, s0, m, n; j < m; ++j) {
+				for (var i = 0, s1 = 0, s2 = 0; i < n; ++i) {
+				  var si = series[order[i]],
+					  sij0 = si[j][1] || 0,
+					  sij1 = si[j - 1][1] || 0,
+					  s3 = (sij0 - sij1) / 2;
+				  for (var k = 0; k < i; ++k) {
+					var sk = series[order[k]],
+						skj0 = sk[j][1] || 0,
+						skj1 = sk[j - 1][1] || 0;
+					s3 += skj0 - skj1;
+				  }
+				  s1 += sij0, s2 += s3 * sij0;
+				}
+				s0[j - 1][1] += s0[j - 1][0] = y;
+				if (s1) y -= s2 / s1;
+			  }
+			  s0[j - 1][1] += s0[j - 1][0] = y;
+			  none(series, order);
+			};
+
+			var ascending$1 = function(series) {
+			  var sums = series.map(sum$1);
+			  return none$1(series).sort(function(a, b) { return sums[a] - sums[b]; });
+			};
+
+			function sum$1(series) {
+			  var s = 0, i = -1, n = series.length, v;
+			  while (++i < n) if (v = +series[i][1]) s += v;
+			  return s;
+			}
+
+			var descending$2 = function(series) {
+			  return ascending$1(series).reverse();
+			};
+
+			var insideOut = function(series) {
+			  var n = series.length,
+				  i,
+				  j,
+				  sums = series.map(sum$1),
+				  order = none$1(series).sort(function(a, b) { return sums[b] - sums[a]; }),
+				  top = 0,
+				  bottom = 0,
+				  tops = [],
+				  bottoms = [];
+
+			  for (i = 0; i < n; ++i) {
+				j = order[i];
+				if (top < bottom) {
+				  top += sums[j];
+				  tops.push(j);
+				} else {
+				  bottom += sums[j];
+				  bottoms.push(j);
+				}
+			  }
+
+			  return bottoms.reverse().concat(tops);
+			};
+
+			var reverse = function(series) {
+			  return none$1(series).reverse();
+			};
+
+			var define = function(constructor, factory, prototype) {
+			  constructor.prototype = factory.prototype = prototype;
+			  prototype.constructor = constructor;
+			};
+
+			function extend(parent, definition) {
+			  var prototype = Object.create(parent.prototype);
+			  for (var key in definition) prototype[key] = definition[key];
+			  return prototype;
+			}
+
+			function Color() {}
+
+			var darker = 0.7;
+			var brighter = 1 / darker;
+
+			var reHex3 = /^#([0-9a-f]{3})$/;
+			var reHex6 = /^#([0-9a-f]{6})$/;
+			var reRgbInteger = /^rgb\(\s*([-+]?\d+)\s*,\s*([-+]?\d+)\s*,\s*([-+]?\d+)\s*\)$/;
+			var reRgbPercent = /^rgb\(\s*([-+]?\d+(?:\.\d+)?)%\s*,\s*([-+]?\d+(?:\.\d+)?)%\s*,\s*([-+]?\d+(?:\.\d+)?)%\s*\)$/;
+			var reRgbaInteger = /^rgba\(\s*([-+]?\d+)\s*,\s*([-+]?\d+)\s*,\s*([-+]?\d+)\s*,\s*([-+]?\d+(?:\.\d+)?)\s*\)$/;
+			var reRgbaPercent = /^rgba\(\s*([-+]?\d+(?:\.\d+)?)%\s*,\s*([-+]?\d+(?:\.\d+)?)%\s*,\s*([-+]?\d+(?:\.\d+)?)%\s*,\s*([-+]?\d+(?:\.\d+)?)\s*\)$/;
+			var reHslPercent = /^hsl\(\s*([-+]?\d+(?:\.\d+)?)\s*,\s*([-+]?\d+(?:\.\d+)?)%\s*,\s*([-+]?\d+(?:\.\d+)?)%\s*\)$/;
+			var reHslaPercent = /^hsla\(\s*([-+]?\d+(?:\.\d+)?)\s*,\s*([-+]?\d+(?:\.\d+)?)%\s*,\s*([-+]?\d+(?:\.\d+)?)%\s*,\s*([-+]?\d+(?:\.\d+)?)\s*\)$/;
+
+			var named = {
+			  aliceblue: 0xf0f8ff,
+			  antiquewhite: 0xfaebd7,
+			  aqua: 0x00ffff,
+			  aquamarine: 0x7fffd4,
+			  azure: 0xf0ffff,
+			  beige: 0xf5f5dc,
+			  bisque: 0xffe4c4,
+			  black: 0x000000,
+			  blanchedalmond: 0xffebcd,
+			  blue: 0x0000ff,
+			  blueviolet: 0x8a2be2,
+			  brown: 0xa52a2a,
+			  burlywood: 0xdeb887,
+			  cadetblue: 0x5f9ea0,
+			  chartreuse: 0x7fff00,
+			  chocolate: 0xd2691e,
+			  coral: 0xff7f50,
+			  cornflowerblue: 0x6495ed,
+			  cornsilk: 0xfff8dc,
+			  crimson: 0xdc143c,
+			  cyan: 0x00ffff,
+			  darkblue: 0x00008b,
+			  darkcyan: 0x008b8b,
+			  darkgoldenrod: 0xb8860b,
+			  darkgray: 0xa9a9a9,
+			  darkgreen: 0x006400,
+			  darkgrey: 0xa9a9a9,
+			  darkkhaki: 0xbdb76b,
+			  darkmagenta: 0x8b008b,
+			  darkolivegreen: 0x556b2f,
+			  darkorange: 0xff8c00,
+			  darkorchid: 0x9932cc,
+			  darkred: 0x8b0000,
+			  darksalmon: 0xe9967a,
+			  darkseagreen: 0x8fbc8f,
+			  darkslateblue: 0x483d8b,
+			  darkslategray: 0x2f4f4f,
+			  darkslategrey: 0x2f4f4f,
+			  darkturquoise: 0x00ced1,
+			  darkviolet: 0x9400d3,
+			  deeppink: 0xff1493,
+			  deepskyblue: 0x00bfff,
+			  dimgray: 0x696969,
+			  dimgrey: 0x696969,
+			  dodgerblue: 0x1e90ff,
+			  firebrick: 0xb22222,
+			  floralwhite: 0xfffaf0,
+			  forestgreen: 0x228b22,
+			  fuchsia: 0xff00ff,
+			  gainsboro: 0xdcdcdc,
+			  ghostwhite: 0xf8f8ff,
+			  gold: 0xffd700,
+			  goldenrod: 0xdaa520,
+			  gray: 0x808080,
+			  green: 0x008000,
+			  greenyellow: 0xadff2f,
+			  grey: 0x808080,
+			  honeydew: 0xf0fff0,
+			  hotpink: 0xff69b4,
+			  indianred: 0xcd5c5c,
+			  indigo: 0x4b0082,
+			  ivory: 0xfffff0,
+			  khaki: 0xf0e68c,
+			  lavender: 0xe6e6fa,
+			  lavenderblush: 0xfff0f5,
+			  lawngreen: 0x7cfc00,
+			  lemonchiffon: 0xfffacd,
+			  lightblue: 0xadd8e6,
+			  lightcoral: 0xf08080,
+			  lightcyan: 0xe0ffff,
+			  lightgoldenrodyellow: 0xfafad2,
+			  lightgray: 0xd3d3d3,
+			  lightgreen: 0x90ee90,
+			  lightgrey: 0xd3d3d3,
+			  lightpink: 0xffb6c1,
+			  lightsalmon: 0xffa07a,
+			  lightseagreen: 0x20b2aa,
+			  lightskyblue: 0x87cefa,
+			  lightslategray: 0x778899,
+			  lightslategrey: 0x778899,
+			  lightsteelblue: 0xb0c4de,
+			  lightyellow: 0xffffe0,
+			  lime: 0x00ff00,
+			  limegreen: 0x32cd32,
+			  linen: 0xfaf0e6,
+			  magenta: 0xff00ff,
+			  maroon: 0x800000,
+			  mediumaquamarine: 0x66cdaa,
+			  mediumblue: 0x0000cd,
+			  mediumorchid: 0xba55d3,
+			  mediumpurple: 0x9370db,
+			  mediumseagreen: 0x3cb371,
+			  mediumslateblue: 0x7b68ee,
+			  mediumspringgreen: 0x00fa9a,
+			  mediumturquoise: 0x48d1cc,
+			  mediumvioletred: 0xc71585,
+			  midnightblue: 0x191970,
+			  mintcream: 0xf5fffa,
+			  mistyrose: 0xffe4e1,
+			  moccasin: 0xffe4b5,
+			  navajowhite: 0xffdead,
+			  navy: 0x000080,
+			  oldlace: 0xfdf5e6,
+			  olive: 0x808000,
+			  olivedrab: 0x6b8e23,
+			  orange: 0xffa500,
+			  orangered: 0xff4500,
+			  orchid: 0xda70d6,
+			  palegoldenrod: 0xeee8aa,
+			  palegreen: 0x98fb98,
+			  paleturquoise: 0xafeeee,
+			  palevioletred: 0xdb7093,
+			  papayawhip: 0xffefd5,
+			  peachpuff: 0xffdab9,
+			  peru: 0xcd853f,
+			  pink: 0xffc0cb,
+			  plum: 0xdda0dd,
+			  powderblue: 0xb0e0e6,
+			  purple: 0x800080,
+			  rebeccapurple: 0x663399,
+			  red: 0xff0000,
+			  rosybrown: 0xbc8f8f,
+			  royalblue: 0x4169e1,
+			  saddlebrown: 0x8b4513,
+			  salmon: 0xfa8072,
+			  sandybrown: 0xf4a460,
+			  seagreen: 0x2e8b57,
+			  seashell: 0xfff5ee,
+			  sienna: 0xa0522d,
+			  silver: 0xc0c0c0,
+			  skyblue: 0x87ceeb,
+			  slateblue: 0x6a5acd,
+			  slategray: 0x708090,
+			  slategrey: 0x708090,
+			  snow: 0xfffafa,
+			  springgreen: 0x00ff7f,
+			  steelblue: 0x4682b4,
+			  tan: 0xd2b48c,
+			  teal: 0x008080,
+			  thistle: 0xd8bfd8,
+			  tomato: 0xff6347,
+			  turquoise: 0x40e0d0,
+			  violet: 0xee82ee,
+			  wheat: 0xf5deb3,
+			  white: 0xffffff,
+			  whitesmoke: 0xf5f5f5,
+			  yellow: 0xffff00,
+			  yellowgreen: 0x9acd32
+			};
+
+			define(Color, color, {
+			  displayable: function() {
+				return this.rgb().displayable();
+			  },
+			  toString: function() {
+				return this.rgb() + "";
+			  }
+			});
+
+			function color(format) {
+			  var m;
+			  format = (format + "").trim().toLowerCase();
+			  return (m = reHex3.exec(format)) ? (m = parseInt(m[1], 16), new Rgb((m >> 8 & 0xf) | (m >> 4 & 0x0f0), (m >> 4 & 0xf) | (m & 0xf0), ((m & 0xf) << 4) | (m & 0xf), 1)) // #f00
+				  : (m = reHex6.exec(format)) ? rgbn(parseInt(m[1], 16)) // #ff0000
+				  : (m = reRgbInteger.exec(format)) ? new Rgb(m[1], m[2], m[3], 1) // rgb(255, 0, 0)
+				  : (m = reRgbPercent.exec(format)) ? new Rgb(m[1] * 255 / 100, m[2] * 255 / 100, m[3] * 255 / 100, 1) // rgb(100%, 0%, 0%)
+				  : (m = reRgbaInteger.exec(format)) ? rgba(m[1], m[2], m[3], m[4]) // rgba(255, 0, 0, 1)
+				  : (m = reRgbaPercent.exec(format)) ? rgba(m[1] * 255 / 100, m[2] * 255 / 100, m[3] * 255 / 100, m[4]) // rgb(100%, 0%, 0%, 1)
+				  : (m = reHslPercent.exec(format)) ? hsla(m[1], m[2] / 100, m[3] / 100, 1) // hsl(120, 50%, 50%)
+				  : (m = reHslaPercent.exec(format)) ? hsla(m[1], m[2] / 100, m[3] / 100, m[4]) // hsla(120, 50%, 50%, 1)
+				  : named.hasOwnProperty(format) ? rgbn(named[format])
+				  : format === "transparent" ? new Rgb(NaN, NaN, NaN, 0)
+				  : null;
+			}
+
+			function rgbn(n) {
+			  return new Rgb(n >> 16 & 0xff, n >> 8 & 0xff, n & 0xff, 1);
+			}
+
+			function rgba(r, g, b, a) {
+			  if (a <= 0) r = g = b = NaN;
+			  return new Rgb(r, g, b, a);
+			}
+
+			function rgbConvert(o) {
+			  if (!(o instanceof Color)) o = color(o);
+			  if (!o) return new Rgb;
+			  o = o.rgb();
+			  return new Rgb(o.r, o.g, o.b, o.opacity);
+			}
+
+			function rgb(r, g, b, opacity) {
+			  return arguments.length === 1 ? rgbConvert(r) : new Rgb(r, g, b, opacity == null ? 1 : opacity);
+			}
+
+			function Rgb(r, g, b, opacity) {
+			  this.r = +r;
+			  this.g = +g;
+			  this.b = +b;
+			  this.opacity = +opacity;
+			}
+
+			define(Rgb, rgb, extend(Color, {
+			  brighter: function(k) {
+				k = k == null ? brighter : Math.pow(brighter, k);
+				return new Rgb(this.r * k, this.g * k, this.b * k, this.opacity);
+			  },
+			  darker: function(k) {
+				k = k == null ? darker : Math.pow(darker, k);
+				return new Rgb(this.r * k, this.g * k, this.b * k, this.opacity);
+			  },
+			  rgb: function() {
+				return this;
+			  },
+			  displayable: function() {
+				return (0 <= this.r && this.r <= 255)
+					&& (0 <= this.g && this.g <= 255)
+					&& (0 <= this.b && this.b <= 255)
+					&& (0 <= this.opacity && this.opacity <= 1);
+			  },
+			  toString: function() {
+				var a = this.opacity; a = isNaN(a) ? 1 : Math.max(0, Math.min(1, a));
+				return (a === 1 ? "rgb(" : "rgba(")
+					+ Math.max(0, Math.min(255, Math.round(this.r) || 0)) + ", "
+					+ Math.max(0, Math.min(255, Math.round(this.g) || 0)) + ", "
+					+ Math.max(0, Math.min(255, Math.round(this.b) || 0))
+					+ (a === 1 ? ")" : ", " + a + ")");
+			  }
+			}));
+
+			function hsla(h, s, l, a) {
+			  if (a <= 0) h = s = l = NaN;
+			  else if (l <= 0 || l >= 1) h = s = NaN;
+			  else if (s <= 0) h = NaN;
+			  return new Hsl(h, s, l, a);
+			}
+
+			function hslConvert(o) {
+			  if (o instanceof Hsl) return new Hsl(o.h, o.s, o.l, o.opacity);
+			  if (!(o instanceof Color)) o = color(o);
+			  if (!o) return new Hsl;
+			  if (o instanceof Hsl) return o;
+			  o = o.rgb();
+			  var r = o.r / 255,
+				  g = o.g / 255,
+				  b = o.b / 255,
+				  min = Math.min(r, g, b),
+				  max = Math.max(r, g, b),
+				  h = NaN,
+				  s = max - min,
+				  l = (max + min) / 2;
+			  if (s) {
+				if (r === max) h = (g - b) / s + (g < b) * 6;
+				else if (g === max) h = (b - r) / s + 2;
+				else h = (r - g) / s + 4;
+				s /= l < 0.5 ? max + min : 2 - max - min;
+				h *= 60;
+			  } else {
+				s = l > 0 && l < 1 ? 0 : h;
+			  }
+			  return new Hsl(h, s, l, o.opacity);
+			}
+
+			function hsl(h, s, l, opacity) {
+			  return arguments.length === 1 ? hslConvert(h) : new Hsl(h, s, l, opacity == null ? 1 : opacity);
+			}
+
+			function Hsl(h, s, l, opacity) {
+			  this.h = +h;
+			  this.s = +s;
+			  this.l = +l;
+			  this.opacity = +opacity;
+			}
+
+			define(Hsl, hsl, extend(Color, {
+			  brighter: function(k) {
+				k = k == null ? brighter : Math.pow(brighter, k);
+				return new Hsl(this.h, this.s, this.l * k, this.opacity);
+			  },
+			  darker: function(k) {
+				k = k == null ? darker : Math.pow(darker, k);
+				return new Hsl(this.h, this.s, this.l * k, this.opacity);
+			  },
+			  rgb: function() {
+				var h = this.h % 360 + (this.h < 0) * 360,
+					s = isNaN(h) || isNaN(this.s) ? 0 : this.s,
+					l = this.l,
+					m2 = l + (l < 0.5 ? l : 1 - l) * s,
+					m1 = 2 * l - m2;
+				return new Rgb(
+				  hsl2rgb(h >= 240 ? h - 240 : h + 120, m1, m2),
+				  hsl2rgb(h, m1, m2),
+				  hsl2rgb(h < 120 ? h + 240 : h - 120, m1, m2),
+				  this.opacity
+				);
+			  },
+			  displayable: function() {
+				return (0 <= this.s && this.s <= 1 || isNaN(this.s))
+					&& (0 <= this.l && this.l <= 1)
+					&& (0 <= this.opacity && this.opacity <= 1);
+			  }
+			}));
+
+			/* From FvD 13.37, CSS Color Module Level 3 */
+			function hsl2rgb(h, m1, m2) {
+			  return (h < 60 ? m1 + (m2 - m1) * h / 60
+				  : h < 180 ? m2
+				  : h < 240 ? m1 + (m2 - m1) * (240 - h) / 60
+				  : m1) * 255;
+			}
+
+			var deg2rad = Math.PI / 180;
+			var rad2deg = 180 / Math.PI;
+
+			var Kn = 18;
+			var Xn = 0.950470;
+			var Yn = 1;
+			var Zn = 1.088830;
+			var t0 = 4 / 29;
+			var t1 = 6 / 29;
+			var t2 = 3 * t1 * t1;
+			var t3 = t1 * t1 * t1;
+
+			function labConvert(o) {
+			  if (o instanceof Lab) return new Lab(o.l, o.a, o.b, o.opacity);
+			  if (o instanceof Hcl) {
+				var h = o.h * deg2rad;
+				return new Lab(o.l, Math.cos(h) * o.c, Math.sin(h) * o.c, o.opacity);
+			  }
+			  if (!(o instanceof Rgb)) o = rgbConvert(o);
+			  var b = rgb2xyz(o.r),
+				  a = rgb2xyz(o.g),
+				  l = rgb2xyz(o.b),
+				  x = xyz2lab((0.4124564 * b + 0.3575761 * a + 0.1804375 * l) / Xn),
+				  y = xyz2lab((0.2126729 * b + 0.7151522 * a + 0.0721750 * l) / Yn),
+				  z = xyz2lab((0.0193339 * b + 0.1191920 * a + 0.9503041 * l) / Zn);
+			  return new Lab(116 * y - 16, 500 * (x - y), 200 * (y - z), o.opacity);
+			}
+
+			function lab(l, a, b, opacity) {
+			  return arguments.length === 1 ? labConvert(l) : new Lab(l, a, b, opacity == null ? 1 : opacity);
+			}
+
+			function Lab(l, a, b, opacity) {
+			  this.l = +l;
+			  this.a = +a;
+			  this.b = +b;
+			  this.opacity = +opacity;
+			}
+
+			define(Lab, lab, extend(Color, {
+			  brighter: function(k) {
+				return new Lab(this.l + Kn * (k == null ? 1 : k), this.a, this.b, this.opacity);
+			  },
+			  darker: function(k) {
+				return new Lab(this.l - Kn * (k == null ? 1 : k), this.a, this.b, this.opacity);
+			  },
+			  rgb: function() {
+				var y = (this.l + 16) / 116,
+					x = isNaN(this.a) ? y : y + this.a / 500,
+					z = isNaN(this.b) ? y : y - this.b / 200;
+				y = Yn * lab2xyz(y);
+				x = Xn * lab2xyz(x);
+				z = Zn * lab2xyz(z);
+				return new Rgb(
+				  xyz2rgb( 3.2404542 * x - 1.5371385 * y - 0.4985314 * z), // D65 -> sRGB
+				  xyz2rgb(-0.9692660 * x + 1.8760108 * y + 0.0415560 * z),
+				  xyz2rgb( 0.0556434 * x - 0.2040259 * y + 1.0572252 * z),
+				  this.opacity
+				);
+			  }
+			}));
+
+			function xyz2lab(t) {
+			  return t > t3 ? Math.pow(t, 1 / 3) : t / t2 + t0;
+			}
+
+			function lab2xyz(t) {
+			  return t > t1 ? t * t * t : t2 * (t - t0);
+			}
+
+			function xyz2rgb(x) {
+			  return 255 * (x <= 0.0031308 ? 12.92 * x : 1.055 * Math.pow(x, 1 / 2.4) - 0.055);
+			}
+
+			function rgb2xyz(x) {
+			  return (x /= 255) <= 0.04045 ? x / 12.92 : Math.pow((x + 0.055) / 1.055, 2.4);
+			}
+
+			function hclConvert(o) {
+			  if (o instanceof Hcl) return new Hcl(o.h, o.c, o.l, o.opacity);
+			  if (!(o instanceof Lab)) o = labConvert(o);
+			  var h = Math.atan2(o.b, o.a) * rad2deg;
+			  return new Hcl(h < 0 ? h + 360 : h, Math.sqrt(o.a * o.a + o.b * o.b), o.l, o.opacity);
+			}
+
+			function hcl(h, c, l, opacity) {
+			  return arguments.length === 1 ? hclConvert(h) : new Hcl(h, c, l, opacity == null ? 1 : opacity);
+			}
+
+			function Hcl(h, c, l, opacity) {
+			  this.h = +h;
+			  this.c = +c;
+			  this.l = +l;
+			  this.opacity = +opacity;
+			}
+
+			define(Hcl, hcl, extend(Color, {
+			  brighter: function(k) {
+				return new Hcl(this.h, this.c, this.l + Kn * (k == null ? 1 : k), this.opacity);
+			  },
+			  darker: function(k) {
+				return new Hcl(this.h, this.c, this.l - Kn * (k == null ? 1 : k), this.opacity);
+			  },
+			  rgb: function() {
+				return labConvert(this).rgb();
+			  }
+			}));
+
+			var A = -0.14861;
+			var B = +1.78277;
+			var C = -0.29227;
+			var D = -0.90649;
+			var E = +1.97294;
+			var ED = E * D;
+			var EB = E * B;
+			var BC_DA = B * C - D * A;
+
+			function cubehelixConvert(o) {
+			  if (o instanceof Cubehelix) return new Cubehelix(o.h, o.s, o.l, o.opacity);
+			  if (!(o instanceof Rgb)) o = rgbConvert(o);
+			  var r = o.r / 255,
+				  g = o.g / 255,
+				  b = o.b / 255,
+				  l = (BC_DA * b + ED * r - EB * g) / (BC_DA + ED - EB),
+				  bl = b - l,
+				  k = (E * (g - l) - C * bl) / D,
+				  s = Math.sqrt(k * k + bl * bl) / (E * l * (1 - l)), // NaN if l=0 or l=1
+				  h = s ? Math.atan2(k, bl) * rad2deg - 120 : NaN;
+			  return new Cubehelix(h < 0 ? h + 360 : h, s, l, o.opacity);
+			}
+
+			function cubehelix(h, s, l, opacity) {
+			  return arguments.length === 1 ? cubehelixConvert(h) : new Cubehelix(h, s, l, opacity == null ? 1 : opacity);
+			}
+
+			function Cubehelix(h, s, l, opacity) {
+			  this.h = +h;
+			  this.s = +s;
+			  this.l = +l;
+			  this.opacity = +opacity;
+			}
+
+			define(Cubehelix, cubehelix, extend(Color, {
+			  brighter: function(k) {
+				k = k == null ? brighter : Math.pow(brighter, k);
+				return new Cubehelix(this.h, this.s, this.l * k, this.opacity);
+			  },
+			  darker: function(k) {
+				k = k == null ? darker : Math.pow(darker, k);
+				return new Cubehelix(this.h, this.s, this.l * k, this.opacity);
+			  },
+			  rgb: function() {
+				var h = isNaN(this.h) ? 0 : (this.h + 120) * deg2rad,
+					l = +this.l,
+					a = isNaN(this.s) ? 0 : this.s * l * (1 - l),
+					cosh = Math.cos(h),
+					sinh = Math.sin(h);
+				return new Rgb(
+				  255 * (l + a * (A * cosh + B * sinh)),
+				  255 * (l + a * (C * cosh + D * sinh)),
+				  255 * (l + a * (E * cosh)),
+				  this.opacity
+				);
+			  }
+			}));
+
+			function basis$1(t1, v0, v1, v2, v3) {
+			  var t2 = t1 * t1, t3 = t2 * t1;
+			  return ((1 - 3 * t1 + 3 * t2 - t3) * v0
+				  + (4 - 6 * t2 + 3 * t3) * v1
+				  + (1 + 3 * t1 + 3 * t2 - 3 * t3) * v2
+				  + t3 * v3) / 6;
+			}
+
+			var basis$2 = function(values) {
+			  var n = values.length - 1;
+			  return function(t) {
+				var i = t <= 0 ? (t = 0) : t >= 1 ? (t = 1, n - 1) : Math.floor(t * n),
+					v1 = values[i],
+					v2 = values[i + 1],
+					v0 = i > 0 ? values[i - 1] : 2 * v1 - v2,
+					v3 = i < n - 1 ? values[i + 2] : 2 * v2 - v1;
+				return basis$1((t - i / n) * n, v0, v1, v2, v3);
+			  };
+			};
+
+			var basisClosed$1 = function(values) {
+			  var n = values.length;
+			  return function(t) {
+				var i = Math.floor(((t %= 1) < 0 ? ++t : t) * n),
+					v0 = values[(i + n - 1) % n],
+					v1 = values[i % n],
+					v2 = values[(i + 1) % n],
+					v3 = values[(i + 2) % n];
+				return basis$1((t - i / n) * n, v0, v1, v2, v3);
+			  };
+			};
+
+			var constant$3 = function(x) {
+			  return function() {
+				return x;
+			  };
+			};
+
+			function linear$1(a, d) {
+			  return function(t) {
+				return a + t * d;
+			  };
+			}
+
+			function exponential$1(a, b, y) {
+			  return a = Math.pow(a, y), b = Math.pow(b, y) - a, y = 1 / y, function(t) {
+				return Math.pow(a + t * b, y);
+			  };
+			}
+
+			function hue(a, b) {
+			  var d = b - a;
+			  return d ? linear$1(a, d > 180 || d < -180 ? d - 360 * Math.round(d / 360) : d) : constant$3(isNaN(a) ? b : a);
+			}
+
+			function gamma(y) {
+			  return (y = +y) === 1 ? nogamma : function(a, b) {
+				return b - a ? exponential$1(a, b, y) : constant$3(isNaN(a) ? b : a);
+			  };
+			}
+
+			function nogamma(a, b) {
+			  var d = b - a;
+			  return d ? linear$1(a, d) : constant$3(isNaN(a) ? b : a);
+			}
+
+			var interpolateRgb = (function rgbGamma(y) {
+			  var color$$1 = gamma(y);
+
+			  function rgb$$1(start, end) {
+				var r = color$$1((start = rgb(start)).r, (end = rgb(end)).r),
+					g = color$$1(start.g, end.g),
+					b = color$$1(start.b, end.b),
+					opacity = color$$1(start.opacity, end.opacity);
+				return function(t) {
+				  start.r = r(t);
+				  start.g = g(t);
+				  start.b = b(t);
+				  start.opacity = opacity(t);
+				  return start + "";
+				};
+			  }
+
+			  rgb$$1.gamma = rgbGamma;
+
+			  return rgb$$1;
+			})(1);
+
+			function rgbSpline(spline) {
+			  return function(colors) {
+				var n = colors.length,
+					r = new Array(n),
+					g = new Array(n),
+					b = new Array(n),
+					i, color$$1;
+				for (i = 0; i < n; ++i) {
+				  color$$1 = rgb(colors[i]);
+				  r[i] = color$$1.r || 0;
+				  g[i] = color$$1.g || 0;
+				  b[i] = color$$1.b || 0;
+				}
+				r = spline(r);
+				g = spline(g);
+				b = spline(b);
+				color$$1.opacity = 1;
+				return function(t) {
+				  color$$1.r = r(t);
+				  color$$1.g = g(t);
+				  color$$1.b = b(t);
+				  return color$$1 + "";
+				};
+			  };
+			}
+
+			var rgbBasis = rgbSpline(basis$2);
+			var rgbBasisClosed = rgbSpline(basisClosed$1);
+
+			var array$1 = function(a, b) {
+			  var nb = b ? b.length : 0,
+				  na = a ? Math.min(nb, a.length) : 0,
+				  x = new Array(nb),
+				  c = new Array(nb),
+				  i;
+
+			  for (i = 0; i < na; ++i) x[i] = interpolate(a[i], b[i]);
+			  for (; i < nb; ++i) c[i] = b[i];
+
+			  return function(t) {
+				for (i = 0; i < na; ++i) c[i] = x[i](t);
+				return c;
+			  };
+			};
+
+			var date = function(a, b) {
+			  var d = new Date;
+			  return a = +a, b -= a, function(t) {
+				return d.setTime(a + b * t), d;
+			  };
+			};
+
+			var interpolateNumber = function(a, b) {
+			  return a = +a, b -= a, function(t) {
+				return a + b * t;
+			  };
+			};
+
+			var object = function(a, b) {
+			  var i = {},
+				  c = {},
+				  k;
+
+			  if (a === null || typeof a !== "object") a = {};
+			  if (b === null || typeof b !== "object") b = {};
+
+			  for (k in b) {
+				if (k in a) {
+				  i[k] = interpolate(a[k], b[k]);
+				} else {
+				  c[k] = b[k];
+				}
+			  }
+
+			  return function(t) {
+				for (k in i) c[k] = i[k](t);
+				return c;
+			  };
+			};
+
+			var reA = /[-+]?(?:\d+\.?\d*|\.?\d+)(?:[eE][-+]?\d+)?/g;
+			var reB = new RegExp(reA.source, "g");
+
+			function zero(b) {
+			  return function() {
+				return b;
+			  };
+			}
+
+			function one(b) {
+			  return function(t) {
+				return b(t) + "";
+			  };
+			}
+
+			var interpolateString = function(a, b) {
+			  var bi = reA.lastIndex = reB.lastIndex = 0, // scan index for next number in b
+				  am, // current match in a
+				  bm, // current match in b
+				  bs, // string preceding current number in b, if any
+				  i = -1, // index in s
+				  s = [], // string constants and placeholders
+				  q = []; // number interpolators
+
+			  // Coerce inputs to strings.
+			  a = a + "", b = b + "";
+
+			  // Interpolate pairs of numbers in a & b.
+			  while ((am = reA.exec(a))
+				  && (bm = reB.exec(b))) {
+				if ((bs = bm.index) > bi) { // a string precedes the next number in b
+				  bs = b.slice(bi, bs);
+				  if (s[i]) s[i] += bs; // coalesce with previous string
+				  else s[++i] = bs;
+				}
+				if ((am = am[0]) === (bm = bm[0])) { // numbers in a & b match
+				  if (s[i]) s[i] += bm; // coalesce with previous string
+				  else s[++i] = bm;
+				} else { // interpolate non-matching numbers
+				  s[++i] = null;
+				  q.push({i: i, x: interpolateNumber(am, bm)});
+				}
+				bi = reB.lastIndex;
+			  }
+
+			  // Add remains of b.
+			  if (bi < b.length) {
+				bs = b.slice(bi);
+				if (s[i]) s[i] += bs; // coalesce with previous string
+				else s[++i] = bs;
+			  }
+
+			  // Special optimization for only a single match.
+			  // Otherwise, interpolate each of the numbers and rejoin the string.
+			  return s.length < 2 ? (q[0]
+				  ? one(q[0].x)
+				  : zero(b))
+				  : (b = q.length, function(t) {
+					  for (var i = 0, o; i < b; ++i) s[(o = q[i]).i] = o.x(t);
+					  return s.join("");
+					});
+			};
+
+			var interpolate = function(a, b) {
+			  var t = typeof b, c;
+			  return b == null || t === "boolean" ? constant$3(b)
+				  : (t === "number" ? interpolateNumber
+				  : t === "string" ? ((c = color(b)) ? (b = c, interpolateRgb) : interpolateString)
+				  : b instanceof color ? interpolateRgb
+				  : b instanceof Date ? date
+				  : Array.isArray(b) ? array$1
+				  : isNaN(b) ? object
+				  : interpolateNumber)(a, b);
+			};
+
+			var interpolateRound = function(a, b) {
+			  return a = +a, b -= a, function(t) {
+				return Math.round(a + b * t);
+			  };
+			};
+
+			var degrees = 180 / Math.PI;
+
+			var identity$2 = {
+			  translateX: 0,
+			  translateY: 0,
+			  rotate: 0,
+			  skewX: 0,
+			  scaleX: 1,
+			  scaleY: 1
+			};
+
+			var decompose = function(a, b, c, d, e, f) {
+			  var scaleX, scaleY, skewX;
+			  if (scaleX = Math.sqrt(a * a + b * b)) a /= scaleX, b /= scaleX;
+			  if (skewX = a * c + b * d) c -= a * skewX, d -= b * skewX;
+			  if (scaleY = Math.sqrt(c * c + d * d)) c /= scaleY, d /= scaleY, skewX /= scaleY;
+			  if (a * d < b * c) a = -a, b = -b, skewX = -skewX, scaleX = -scaleX;
+			  return {
+				translateX: e,
+				translateY: f,
+				rotate: Math.atan2(b, a) * degrees,
+				skewX: Math.atan(skewX) * degrees,
+				scaleX: scaleX,
+				scaleY: scaleY
+			  };
+			};
+
+			var cssNode;
+			var cssRoot;
+			var cssView;
+			var svgNode;
+
+			function parseCss(value) {
+			  if (value === "none") return identity$2;
+			  if (!cssNode) cssNode = document.createElement("DIV"), cssRoot = document.documentElement, cssView = document.defaultView;
+			  cssNode.style.transform = value;
+			  value = cssView.getComputedStyle(cssRoot.appendChild(cssNode), null).getPropertyValue("transform");
+			  cssRoot.removeChild(cssNode);
+			  value = value.slice(7, -1).split(",");
+			  return decompose(+value[0], +value[1], +value[2], +value[3], +value[4], +value[5]);
+			}
+
+			function parseSvg(value) {
+			  if (value == null) return identity$2;
+			  if (!svgNode) svgNode = document.createElementNS("http://www.w3.org/2000/svg", "g");
+			  svgNode.setAttribute("transform", value);
+			  if (!(value = svgNode.transform.baseVal.consolidate())) return identity$2;
+			  value = value.matrix;
+			  return decompose(value.a, value.b, value.c, value.d, value.e, value.f);
+			}
+
+			function interpolateTransform(parse, pxComma, pxParen, degParen) {
+
+			  function pop(s) {
+				return s.length ? s.pop() + " " : "";
+			  }
+
+			  function translate(xa, ya, xb, yb, s, q) {
+				if (xa !== xb || ya !== yb) {
+				  var i = s.push("translate(", null, pxComma, null, pxParen);
+				  q.push({i: i - 4, x: interpolateNumber(xa, xb)}, {i: i - 2, x: interpolateNumber(ya, yb)});
+				} else if (xb || yb) {
+				  s.push("translate(" + xb + pxComma + yb + pxParen);
+				}
+			  }
+
+			  function rotate(a, b, s, q) {
+				if (a !== b) {
+				  if (a - b > 180) b += 360; else if (b - a > 180) a += 360; // shortest path
+				  q.push({i: s.push(pop(s) + "rotate(", null, degParen) - 2, x: interpolateNumber(a, b)});
+				} else if (b) {
+				  s.push(pop(s) + "rotate(" + b + degParen);
+				}
+			  }
+
+			  function skewX(a, b, s, q) {
+				if (a !== b) {
+				  q.push({i: s.push(pop(s) + "skewX(", null, degParen) - 2, x: interpolateNumber(a, b)});
+				} else if (b) {
+				  s.push(pop(s) + "skewX(" + b + degParen);
+				}
+			  }
+
+			  function scale(xa, ya, xb, yb, s, q) {
+				if (xa !== xb || ya !== yb) {
+				  var i = s.push(pop(s) + "scale(", null, ",", null, ")");
+				  q.push({i: i - 4, x: interpolateNumber(xa, xb)}, {i: i - 2, x: interpolateNumber(ya, yb)});
+				} else if (xb !== 1 || yb !== 1) {
+				  s.push(pop(s) + "scale(" + xb + "," + yb + ")");
+				}
+			  }
+
+			  return function(a, b) {
+				var s = [], // string constants and placeholders
+					q = []; // number interpolators
+				a = parse(a), b = parse(b);
+				translate(a.translateX, a.translateY, b.translateX, b.translateY, s, q);
+				rotate(a.rotate, b.rotate, s, q);
+				skewX(a.skewX, b.skewX, s, q);
+				scale(a.scaleX, a.scaleY, b.scaleX, b.scaleY, s, q);
+				a = b = null; // gc
+				return function(t) {
+				  var i = -1, n = q.length, o;
+				  while (++i < n) s[(o = q[i]).i] = o.x(t);
+				  return s.join("");
+				};
+			  };
+			}
+
+			var interpolateTransformCss = interpolateTransform(parseCss, "px, ", "px)", "deg)");
+			var interpolateTransformSvg = interpolateTransform(parseSvg, ", ", ")", ")");
+
+			var rho = Math.SQRT2;
+			var rho2 = 2;
+			var rho4 = 4;
+			var epsilon2 = 1e-12;
+
+			function cosh(x) {
+			  return ((x = Math.exp(x)) + 1 / x) / 2;
+			}
+
+			function sinh(x) {
+			  return ((x = Math.exp(x)) - 1 / x) / 2;
+			}
+
+			function tanh(x) {
+			  return ((x = Math.exp(2 * x)) - 1) / (x + 1);
+			}
+
+			// p0 = [ux0, uy0, w0]
+			// p1 = [ux1, uy1, w1]
+			var interpolateZoom = function(p0, p1) {
+			  var ux0 = p0[0], uy0 = p0[1], w0 = p0[2],
+				  ux1 = p1[0], uy1 = p1[1], w1 = p1[2],
+				  dx = ux1 - ux0,
+				  dy = uy1 - uy0,
+				  d2 = dx * dx + dy * dy,
+				  i,
+				  S;
+
+			  // Special case for u0 ≅ u1.
+			  if (d2 < epsilon2) {
+				S = Math.log(w1 / w0) / rho;
+				i = function(t) {
+				  return [
+					ux0 + t * dx,
+					uy0 + t * dy,
+					w0 * Math.exp(rho * t * S)
+				  ];
+				};
+			  }
+
+			  // General case.
+			  else {
+				var d1 = Math.sqrt(d2),
+					b0 = (w1 * w1 - w0 * w0 + rho4 * d2) / (2 * w0 * rho2 * d1),
+					b1 = (w1 * w1 - w0 * w0 - rho4 * d2) / (2 * w1 * rho2 * d1),
+					r0 = Math.log(Math.sqrt(b0 * b0 + 1) - b0),
+					r1 = Math.log(Math.sqrt(b1 * b1 + 1) - b1);
+				S = (r1 - r0) / rho;
+				i = function(t) {
+				  var s = t * S,
+					  coshr0 = cosh(r0),
+					  u = w0 / (rho2 * d1) * (coshr0 * tanh(rho * s + r0) - sinh(r0));
+				  return [
+					ux0 + u * dx,
+					uy0 + u * dy,
+					w0 * coshr0 / cosh(rho * s + r0)
+				  ];
+				};
+			  }
+
+			  i.duration = S * 1000;
+
+			  return i;
+			};
+
+			function hsl$1(hue$$1) {
+			  return function(start, end) {
+				var h = hue$$1((start = hsl(start)).h, (end = hsl(end)).h),
+					s = nogamma(start.s, end.s),
+					l = nogamma(start.l, end.l),
+					opacity = nogamma(start.opacity, end.opacity);
+				return function(t) {
+				  start.h = h(t);
+				  start.s = s(t);
+				  start.l = l(t);
+				  start.opacity = opacity(t);
+				  return start + "";
+				};
+			  }
+			}
+
+			var hsl$2 = hsl$1(hue);
+			var hslLong = hsl$1(nogamma);
+
+			function lab$1(start, end) {
+			  var l = nogamma((start = lab(start)).l, (end = lab(end)).l),
+				  a = nogamma(start.a, end.a),
+				  b = nogamma(start.b, end.b),
+				  opacity = nogamma(start.opacity, end.opacity);
+			  return function(t) {
+				start.l = l(t);
+				start.a = a(t);
+				start.b = b(t);
+				start.opacity = opacity(t);
+				return start + "";
+			  };
+			}
+
+			function hcl$1(hue$$1) {
+			  return function(start, end) {
+				var h = hue$$1((start = hcl(start)).h, (end = hcl(end)).h),
+					c = nogamma(start.c, end.c),
+					l = nogamma(start.l, end.l),
+					opacity = nogamma(start.opacity, end.opacity);
+				return function(t) {
+				  start.h = h(t);
+				  start.c = c(t);
+				  start.l = l(t);
+				  start.opacity = opacity(t);
+				  return start + "";
+				};
+			  }
+			}
+
+			var hcl$2 = hcl$1(hue);
+			var hclLong = hcl$1(nogamma);
+
+			function cubehelix$1(hue$$1) {
+			  return (function cubehelixGamma(y) {
+				y = +y;
+
+				function cubehelix$$1(start, end) {
+				  var h = hue$$1((start = cubehelix(start)).h, (end = cubehelix(end)).h),
+					  s = nogamma(start.s, end.s),
+					  l = nogamma(start.l, end.l),
+					  opacity = nogamma(start.opacity, end.opacity);
+				  return function(t) {
+					start.h = h(t);
+					start.s = s(t);
+					start.l = l(Math.pow(t, y));
+					start.opacity = opacity(t);
+					return start + "";
+				  };
+				}
+
+				cubehelix$$1.gamma = cubehelixGamma;
+
+				return cubehelix$$1;
+			  })(1);
+			}
+
+			var cubehelix$2 = cubehelix$1(hue);
+			var cubehelixLong = cubehelix$1(nogamma);
+
+			var quantize = function(interpolator, n) {
+			  var samples = new Array(n);
+			  for (var i = 0; i < n; ++i) samples[i] = interpolator(i / (n - 1));
+			  return samples;
+			};
+
+			var noop$1 = {value: function() {}};
+
+			function dispatch() {
+			  for (var i = 0, n = arguments.length, _ = {}, t; i < n; ++i) {
+				if (!(t = arguments[i] + "") || (t in _)) throw new Error("illegal type: " + t);
+				_[t] = [];
+			  }
+			  return new Dispatch(_);
+			}
+
+			function Dispatch(_) {
+			  this._ = _;
+			}
+
+			function parseTypenames(typenames, types) {
+			  return typenames.trim().split(/^|\s+/).map(function(t) {
+				var name = "", i = t.indexOf(".");
+				if (i >= 0) name = t.slice(i + 1), t = t.slice(0, i);
+				if (t && !types.hasOwnProperty(t)) throw new Error("unknown type: " + t);
+				return {type: t, name: name};
+			  });
+			}
+
+			Dispatch.prototype = dispatch.prototype = {
+			  constructor: Dispatch,
+			  on: function(typename, callback) {
+				var _ = this._,
+					T = parseTypenames(typename + "", _),
+					t,
+					i = -1,
+					n = T.length;
+
+				// If no callback was specified, return the callback of the given type and name.
+				if (arguments.length < 2) {
+				  while (++i < n) if ((t = (typename = T[i]).type) && (t = get(_[t], typename.name))) return t;
+				  return;
+				}
+
+				// If a type was specified, set the callback for the given type and name.
+				// Otherwise, if a null callback was specified, remove callbacks of the given name.
+				if (callback != null && typeof callback !== "function") throw new Error("invalid callback: " + callback);
+				while (++i < n) {
+				  if (t = (typename = T[i]).type) _[t] = set$2(_[t], typename.name, callback);
+				  else if (callback == null) for (t in _) _[t] = set$2(_[t], typename.name, null);
+				}
+
+				return this;
+			  },
+			  copy: function() {
+				var copy = {}, _ = this._;
+				for (var t in _) copy[t] = _[t].slice();
+				return new Dispatch(copy);
+			  },
+			  call: function(type, that) {
+				if ((n = arguments.length - 2) > 0) for (var args = new Array(n), i = 0, n, t; i < n; ++i) args[i] = arguments[i + 2];
+				if (!this._.hasOwnProperty(type)) throw new Error("unknown type: " + type);
+				for (t = this._[type], i = 0, n = t.length; i < n; ++i) t[i].value.apply(that, args);
+			  },
+			  apply: function(type, that, args) {
+				if (!this._.hasOwnProperty(type)) throw new Error("unknown type: " + type);
+				for (var t = this._[type], i = 0, n = t.length; i < n; ++i) t[i].value.apply(that, args);
+			  }
+			};
+
+			function get(type, name) {
+			  for (var i = 0, n = type.length, c; i < n; ++i) {
+				if ((c = type[i]).name === name) {
+				  return c.value;
+				}
+			  }
+			}
+
+			function set$2(type, name, callback) {
+			  for (var i = 0, n = type.length; i < n; ++i) {
+				if (type[i].name === name) {
+				  type[i] = noop$1, type = type.slice(0, i).concat(type.slice(i + 1));
+				  break;
+				}
+			  }
+			  if (callback != null) type.push({name: name, value: callback});
+			  return type;
+			}
+
+			function objectConverter(columns) {
+			  return new Function("d", "return {" + columns.map(function(name, i) {
+				return JSON.stringify(name) + ": d[" + i + "]";
+			  }).join(",") + "}");
+			}
+
+			function customConverter(columns, f) {
+			  var object = objectConverter(columns);
+			  return function(row, i) {
+				return f(object(row), i, columns);
+			  };
+			}
+
+			// Compute unique columns in order of discovery.
+			function inferColumns(rows) {
+			  var columnSet = Object.create(null),
+				  columns = [];
+
+			  rows.forEach(function(row) {
+				for (var column in row) {
+				  if (!(column in columnSet)) {
+					columns.push(columnSet[column] = column);
+				  }
+				}
+			  });
+
+			  return columns;
+			}
+
+			var dsv = function(delimiter) {
+			  var reFormat = new RegExp("[\"" + delimiter + "\n]"),
+				  delimiterCode = delimiter.charCodeAt(0);
+
+			  function parse(text, f) {
+				var convert, columns, rows = parseRows(text, function(row, i) {
+				  if (convert) return convert(row, i - 1);
+				  columns = row, convert = f ? customConverter(row, f) : objectConverter(row);
+				});
+				rows.columns = columns;
+				return rows;
+			  }
+
+			  function parseRows(text, f) {
+				var EOL = {}, // sentinel value for end-of-line
+					EOF = {}, // sentinel value for end-of-file
+					rows = [], // output rows
+					N = text.length,
+					I = 0, // current character index
+					n = 0, // the current line number
+					t, // the current token
+					eol; // is the current token followed by EOL?
+
+				function token() {
+				  if (I >= N) return EOF; // special case: end of file
+				  if (eol) return eol = false, EOL; // special case: end of line
+
+				  // special case: quotes
+				  var j = I, c;
+				  if (text.charCodeAt(j) === 34) {
+					var i = j;
+					while (i++ < N) {
+					  if (text.charCodeAt(i) === 34) {
+						if (text.charCodeAt(i + 1) !== 34) break;
+						++i;
+					  }
+					}
+					I = i + 2;
+					c = text.charCodeAt(i + 1);
+					if (c === 13) {
+					  eol = true;
+					  if (text.charCodeAt(i + 2) === 10) ++I;
+					} else if (c === 10) {
+					  eol = true;
+					}
+					return text.slice(j + 1, i).replace(/""/g, "\"");
+				  }
+
+				  // common case: find next delimiter or newline
+				  while (I < N) {
+					var k = 1;
+					c = text.charCodeAt(I++);
+					if (c === 10) eol = true; // \n
+					else if (c === 13) { eol = true; if (text.charCodeAt(I) === 10) ++I, ++k; } // \r|\r\n
+					else if (c !== delimiterCode) continue;
+					return text.slice(j, I - k);
+				  }
+
+				  // special case: last token before EOF
+				  return text.slice(j);
+				}
+
+				while ((t = token()) !== EOF) {
+				  var a = [];
+				  while (t !== EOL && t !== EOF) {
+					a.push(t);
+					t = token();
+				  }
+				  if (f && (a = f(a, n++)) == null) continue;
+				  rows.push(a);
+				}
+
+				return rows;
+			  }
+
+			  function format(rows, columns) {
+				if (columns == null) columns = inferColumns(rows);
+				return [columns.map(formatValue).join(delimiter)].concat(rows.map(function(row) {
+				  return columns.map(function(column) {
+					return formatValue(row[column]);
+				  }).join(delimiter);
+				})).join("\n");
+			  }
+
+			  function formatRows(rows) {
+				return rows.map(formatRow).join("\n");
+			  }
+
+			  function formatRow(row) {
+				return row.map(formatValue).join(delimiter);
+			  }
+
+			  function formatValue(text) {
+				return text == null ? ""
+					: reFormat.test(text += "") ? "\"" + text.replace(/\"/g, "\"\"") + "\""
+					: text;
+			  }
+
+			  return {
+				parse: parse,
+				parseRows: parseRows,
+				format: format,
+				formatRows: formatRows
+			  };
+			};
+
+			var csv = dsv(",");
+
+			var csvParse = csv.parse;
+			var csvParseRows = csv.parseRows;
+			var csvFormat = csv.format;
+			var csvFormatRows = csv.formatRows;
+
+			var tsv = dsv("\t");
+
+			var tsvParse = tsv.parse;
+			var tsvParseRows = tsv.parseRows;
+			var tsvFormat = tsv.format;
+			var tsvFormatRows = tsv.formatRows;
+
+			var request = function(url, callback) {
+			  var request,
+				  event = dispatch("beforesend", "progress", "load", "error"),
+				  mimeType,
+				  headers = map$1(),
+				  xhr = new XMLHttpRequest,
+				  user = null,
+				  password = null,
+				  response,
+				  responseType,
+				  timeout = 0;
+
+			  // If IE does not support CORS, use XDomainRequest.
+			  if (typeof XDomainRequest !== "undefined"
+				  && !("withCredentials" in xhr)
+				  && /^(http(s)?:)?\/\//.test(url)) xhr = new XDomainRequest;
+
+			  "onload" in xhr
+				  ? xhr.onload = xhr.onerror = xhr.ontimeout = respond
+				  : xhr.onreadystatechange = function(o) { xhr.readyState > 3 && respond(o); };
+
+			  function respond(o) {
+				var status = xhr.status, result;
+				if (!status && hasResponse(xhr)
+					|| status >= 200 && status < 300
+					|| status === 304) {
+				  if (response) {
+					try {
+					  result = response.call(request, xhr);
+					} catch (e) {
+					  event.call("error", request, e);
+					  return;
+					}
+				  } else {
+					result = xhr;
+				  }
+				  event.call("load", request, result);
+				} else {
+				  event.call("error", request, o);
+				}
+			  }
+
+			  xhr.onprogress = function(e) {
+				event.call("progress", request, e);
+			  };
+
+			  request = {
+				header: function(name, value) {
+				  name = (name + "").toLowerCase();
+				  if (arguments.length < 2) return headers.get(name);
+				  if (value == null) headers.remove(name);
+				  else headers.set(name, value + "");
+				  return request;
+				},
+
+				// If mimeType is non-null and no Accept header is set, a default is used.
+				mimeType: function(value) {
+				  if (!arguments.length) return mimeType;
+				  mimeType = value == null ? null : value + "";
+				  return request;
+				},
+
+				// Specifies what type the response value should take;
+				// for instance, arraybuffer, blob, document, or text.
+				responseType: function(value) {
+				  if (!arguments.length) return responseType;
+				  responseType = value;
+				  return request;
+				},
+
+				timeout: function(value) {
+				  if (!arguments.length) return timeout;
+				  timeout = +value;
+				  return request;
+				},
+
+				user: function(value) {
+				  return arguments.length < 1 ? user : (user = value == null ? null : value + "", request);
+				},
+
+				password: function(value) {
+				  return arguments.length < 1 ? password : (password = value == null ? null : value + "", request);
+				},
+
+				// Specify how to convert the response content to a specific type;
+				// changes the callback value on "load" events.
+				response: function(value) {
+				  response = value;
+				  return request;
+				},
+
+				// Alias for send("GET", …).
+				get: function(data, callback) {
+				  return request.send("GET", data, callback);
+				},
+
+				// Alias for send("POST", …).
+				post: function(data, callback) {
+				  return request.send("POST", data, callback);
+				},
+
+				// If callback is non-null, it will be used for error and load events.
+				send: function(method, data, callback) {
+				  xhr.open(method, url, true, user, password);
+				  if (mimeType != null && !headers.has("accept")) headers.set("accept", mimeType + ",*/*");
+				  if (xhr.setRequestHeader) headers.each(function(value, name) { xhr.setRequestHeader(name, value); });
+				  if (mimeType != null && xhr.overrideMimeType) xhr.overrideMimeType(mimeType);
+				  if (responseType != null) xhr.responseType = responseType;
+				  if (timeout > 0) xhr.timeout = timeout;
+				  if (callback == null && typeof data === "function") callback = data, data = null;
+				  if (callback != null && callback.length === 1) callback = fixCallback(callback);
+				  if (callback != null) request.on("error", callback).on("load", function(xhr) { callback(null, xhr); });
+				  event.call("beforesend", request, xhr);
+				  xhr.send(data == null ? null : data);
+				  return request;
+				},
+
+				abort: function() {
+				  xhr.abort();
+				  return request;
+				},
+
+				on: function() {
+				  var value = event.on.apply(event, arguments);
+				  return value === event ? request : value;
+				}
+			  };
+
+			  if (callback != null) {
+				if (typeof callback !== "function") throw new Error("invalid callback: " + callback);
+				return request.get(callback);
+			  }
+
+			  return request;
+			};
+
+			function fixCallback(callback) {
+			  return function(error, xhr) {
+				callback(error == null ? xhr : null);
+			  };
+			}
+
+			function hasResponse(xhr) {
+			  var type = xhr.responseType;
+			  return type && type !== "text"
+				  ? xhr.response // null on error
+				  : xhr.responseText; // "" on error
+			}
+
+			var type = function(defaultMimeType, response) {
+			  return function(url, callback) {
+				var r = request(url).mimeType(defaultMimeType).response(response);
+				if (callback != null) {
+				  if (typeof callback !== "function") throw new Error("invalid callback: " + callback);
+				  return r.get(callback);
+				}
+				return r;
+			  };
+			};
+
+			var html = type("text/html", function(xhr) {
+			  return document.createRange().createContextualFragment(xhr.responseText);
+			});
+
+			var json = type("application/json", function(xhr) {
+			  return JSON.parse(xhr.responseText);
+			});
+
+			var text = type("text/plain", function(xhr) {
+			  return xhr.responseText;
+			});
+
+			var xml = type("application/xml", function(xhr) {
+			  var xml = xhr.responseXML;
+			  if (!xml) throw new Error("parse error");
+			  return xml;
+			});
+
+			var dsv$1 = function(defaultMimeType, parse) {
+			  return function(url, row, callback) {
+				if (arguments.length < 3) callback = row, row = null;
+				var r = request(url).mimeType(defaultMimeType);
+				r.row = function(_) { return arguments.length ? r.response(responseOf(parse, row = _)) : row; };
+				r.row(row);
+				return callback ? r.get(callback) : r;
+			  };
+			};
+
+			function responseOf(parse, row) {
+			  return function(request$$1) {
+				return parse(request$$1.responseText, row);
+			  };
+			}
+
+			var csv$1 = dsv$1("text/csv", csvParse);
+
+			var tsv$1 = dsv$1("text/tab-separated-values", tsvParse);
+
+			var frame = 0;
+			var timeout = 0;
+			var interval = 0;
+			var pokeDelay = 1000;
+			var taskHead;
+			var taskTail;
+			var clockLast = 0;
+			var clockNow = 0;
+			var clockSkew = 0;
+			var clock = typeof performance === "object" && performance.now ? performance : Date;
+			var setFrame = typeof requestAnimationFrame === "function" ? requestAnimationFrame : function(f) { setTimeout(f, 17); };
+
+			function now() {
+			  return clockNow || (setFrame(clearNow), clockNow = clock.now() + clockSkew);
+			}
+
+			function clearNow() {
+			  clockNow = 0;
+			}
+
+			function Timer() {
+			  this._call =
+			  this._time =
+			  this._next = null;
+			}
+
+			Timer.prototype = timer.prototype = {
+			  constructor: Timer,
+			  restart: function(callback, delay, time) {
+				if (typeof callback !== "function") throw new TypeError("callback is not a function");
+				time = (time == null ? now() : +time) + (delay == null ? 0 : +delay);
+				if (!this._next && taskTail !== this) {
+				  if (taskTail) taskTail._next = this;
+				  else taskHead = this;
+				  taskTail = this;
+				}
+				this._call = callback;
+				this._time = time;
+				sleep();
+			  },
+			  stop: function() {
+				if (this._call) {
+				  this._call = null;
+				  this._time = Infinity;
+				  sleep();
+				}
+			  }
+			};
+
+			function timer(callback, delay, time) {
+			  var t = new Timer;
+			  t.restart(callback, delay, time);
+			  return t;
+			}
+
+			function timerFlush() {
+			  now(); // Get the current time, if not already set.
+			  ++frame; // Pretend we’ve set an alarm, if we haven’t already.
+			  var t = taskHead, e;
+			  while (t) {
+				if ((e = clockNow - t._time) >= 0) t._call.call(null, e);
+				t = t._next;
+			  }
+			  --frame;
+			}
+
+			function wake() {
+			  clockNow = (clockLast = clock.now()) + clockSkew;
+			  frame = timeout = 0;
+			  try {
+				timerFlush();
+			  } finally {
+				frame = 0;
+				nap();
+				clockNow = 0;
+			  }
+			}
+
+			function poke$1() {
+			  var now = clock.now(), delay = now - clockLast;
+			  if (delay > pokeDelay) clockSkew -= delay, clockLast = now;
+			}
+
+			function nap() {
+			  var t0, t1 = taskHead, t2, time = Infinity;
+			  while (t1) {
+				if (t1._call) {
+				  if (time > t1._time) time = t1._time;
+				  t0 = t1, t1 = t1._next;
+				} else {
+				  t2 = t1._next, t1._next = null;
+				  t1 = t0 ? t0._next = t2 : taskHead = t2;
+				}
+			  }
+			  taskTail = t0;
+			  sleep(time);
+			}
+
+			function sleep(time) {
+			  if (frame) return; // Soonest alarm already set, or will be.
+			  if (timeout) timeout = clearTimeout(timeout);
+			  var delay = time - clockNow;
+			  if (delay > 24) {
+				if (time < Infinity) timeout = setTimeout(wake, delay);
+				if (interval) interval = clearInterval(interval);
+			  } else {
+				if (!interval) interval = setInterval(poke$1, pokeDelay);
+				frame = 1, setFrame(wake);
+			  }
+			}
+
+			var timeout$1 = function(callback, delay, time) {
+			  var t = new Timer;
+			  delay = delay == null ? 0 : +delay;
+			  t.restart(function(elapsed) {
+				t.stop();
+				callback(elapsed + delay);
+			  }, delay, time);
+			  return t;
+			};
+
+			var interval$1 = function(callback, delay, time) {
+			  var t = new Timer, total = delay;
+			  if (delay == null) return t.restart(callback, delay, time), t;
+			  delay = +delay, time = time == null ? now() : +time;
+			  t.restart(function tick(elapsed) {
+				elapsed += total;
+				t.restart(tick, total += delay, time);
+				callback(elapsed);
+			  }, delay, time);
+			  return t;
+			};
+
+			var t0$1 = new Date;
+			var t1$1 = new Date;
+
+			function newInterval(floori, offseti, count, field) {
+
+			  function interval(date) {
+				return floori(date = new Date(+date)), date;
+			  }
+
+			  interval.floor = interval;
+
+			  interval.ceil = function(date) {
+				return floori(date = new Date(date - 1)), offseti(date, 1), floori(date), date;
+			  };
+
+			  interval.round = function(date) {
+				var d0 = interval(date),
+					d1 = interval.ceil(date);
+				return date - d0 < d1 - date ? d0 : d1;
+			  };
+
+			  interval.offset = function(date, step) {
+				return offseti(date = new Date(+date), step == null ? 1 : Math.floor(step)), date;
+			  };
+
+			  interval.range = function(start, stop, step) {
+				var range = [];
+				start = interval.ceil(start);
+				step = step == null ? 1 : Math.floor(step);
+				if (!(start < stop) || !(step > 0)) return range; // also handles Invalid Date
+				do range.push(new Date(+start)); while (offseti(start, step), floori(start), start < stop)
+				return range;
+			  };
+
+			  interval.filter = function(test) {
+				return newInterval(function(date) {
+				  if (date >= date) while (floori(date), !test(date)) date.setTime(date - 1);
+				}, function(date, step) {
+				  if (date >= date) while (--step >= 0) while (offseti(date, 1), !test(date)) {} // eslint-disable-line no-empty
+				});
+			  };
+
+			  if (count) {
+				interval.count = function(start, end) {
+				  t0$1.setTime(+start), t1$1.setTime(+end);
+				  floori(t0$1), floori(t1$1);
+				  return Math.floor(count(t0$1, t1$1));
+				};
+
+				interval.every = function(step) {
+				  step = Math.floor(step);
+				  return !isFinite(step) || !(step > 0) ? null
+					  : !(step > 1) ? interval
+					  : interval.filter(field
+						  ? function(d) { return field(d) % step === 0; }
+						  : function(d) { return interval.count(0, d) % step === 0; });
+				};
+			  }
+
+			  return interval;
+			}
+
+			var millisecond = newInterval(function() {
+			  // noop
+			}, function(date, step) {
+			  date.setTime(+date + step);
+			}, function(start, end) {
+			  return end - start;
+			});
+
+			// An optimized implementation for this simple case.
+			millisecond.every = function(k) {
+			  k = Math.floor(k);
+			  if (!isFinite(k) || !(k > 0)) return null;
+			  if (!(k > 1)) return millisecond;
+			  return newInterval(function(date) {
+				date.setTime(Math.floor(date / k) * k);
+			  }, function(date, step) {
+				date.setTime(+date + step * k);
+			  }, function(start, end) {
+				return (end - start) / k;
+			  });
+			};
+
+			var milliseconds = millisecond.range;
+
+			var durationSecond = 1e3;
+			var durationMinute = 6e4;
+			var durationHour = 36e5;
+			var durationDay = 864e5;
+			var durationWeek = 6048e5;
+
+			var second = newInterval(function(date) {
+			  date.setTime(Math.floor(date / durationSecond) * durationSecond);
+			}, function(date, step) {
+			  date.setTime(+date + step * durationSecond);
+			}, function(start, end) {
+			  return (end - start) / durationSecond;
+			}, function(date) {
+			  return date.getUTCSeconds();
+			});
+
+			var seconds = second.range;
+
+			var minute = newInterval(function(date) {
+			  date.setTime(Math.floor(date / durationMinute) * durationMinute);
+			}, function(date, step) {
+			  date.setTime(+date + step * durationMinute);
+			}, function(start, end) {
+			  return (end - start) / durationMinute;
+			}, function(date) {
+			  return date.getMinutes();
+			});
+
+			var minutes = minute.range;
+
+			var hour = newInterval(function(date) {
+			  var offset = date.getTimezoneOffset() * durationMinute % durationHour;
+			  if (offset < 0) offset += durationHour;
+			  date.setTime(Math.floor((+date - offset) / durationHour) * durationHour + offset);
+			}, function(date, step) {
+			  date.setTime(+date + step * durationHour);
+			}, function(start, end) {
+			  return (end - start) / durationHour;
+			}, function(date) {
+			  return date.getHours();
+			});
+
+			var hours = hour.range;
+
+			var day = newInterval(function(date) {
+			  date.setHours(0, 0, 0, 0);
+			}, function(date, step) {
+			  date.setDate(date.getDate() + step);
+			}, function(start, end) {
+			  return (end - start - (end.getTimezoneOffset() - start.getTimezoneOffset()) * durationMinute) / durationDay;
+			}, function(date) {
+			  return date.getDate() - 1;
+			});
+
+			var days = day.range;
+
+			function weekday(i) {
+			  return newInterval(function(date) {
+				date.setDate(date.getDate() - (date.getDay() + 7 - i) % 7);
+				date.setHours(0, 0, 0, 0);
+			  }, function(date, step) {
+				date.setDate(date.getDate() + step * 7);
+			  }, function(start, end) {
+				return (end - start - (end.getTimezoneOffset() - start.getTimezoneOffset()) * durationMinute) / durationWeek;
+			  });
+			}
+
+			var sunday = weekday(0);
+			var monday = weekday(1);
+			var tuesday = weekday(2);
+			var wednesday = weekday(3);
+			var thursday = weekday(4);
+			var friday = weekday(5);
+			var saturday = weekday(6);
+
+			var sundays = sunday.range;
+			var mondays = monday.range;
+			var tuesdays = tuesday.range;
+			var wednesdays = wednesday.range;
+			var thursdays = thursday.range;
+			var fridays = friday.range;
+			var saturdays = saturday.range;
+
+			var month = newInterval(function(date) {
+			  date.setDate(1);
+			  date.setHours(0, 0, 0, 0);
+			}, function(date, step) {
+			  date.setMonth(date.getMonth() + step);
+			}, function(start, end) {
+			  return end.getMonth() - start.getMonth() + (end.getFullYear() - start.getFullYear()) * 12;
+			}, function(date) {
+			  return date.getMonth();
+			});
+
+			var months = month.range;
+
+			var year = newInterval(function(date) {
+			  date.setMonth(0, 1);
+			  date.setHours(0, 0, 0, 0);
+			}, function(date, step) {
+			  date.setFullYear(date.getFullYear() + step);
+			}, function(start, end) {
+			  return end.getFullYear() - start.getFullYear();
+			}, function(date) {
+			  return date.getFullYear();
+			});
+
+			// An optimized implementation for this simple case.
+			year.every = function(k) {
+			  return !isFinite(k = Math.floor(k)) || !(k > 0) ? null : newInterval(function(date) {
+				date.setFullYear(Math.floor(date.getFullYear() / k) * k);
+				date.setMonth(0, 1);
+				date.setHours(0, 0, 0, 0);
+			  }, function(date, step) {
+				date.setFullYear(date.getFullYear() + step * k);
+			  });
+			};
+
+			var years = year.range;
+
+			var utcMinute = newInterval(function(date) {
+			  date.setUTCSeconds(0, 0);
+			}, function(date, step) {
+			  date.setTime(+date + step * durationMinute);
+			}, function(start, end) {
+			  return (end - start) / durationMinute;
+			}, function(date) {
+			  return date.getUTCMinutes();
+			});
+
+			var utcMinutes = utcMinute.range;
+
+			var utcHour = newInterval(function(date) {
+			  date.setUTCMinutes(0, 0, 0);
+			}, function(date, step) {
+			  date.setTime(+date + step * durationHour);
+			}, function(start, end) {
+			  return (end - start) / durationHour;
+			}, function(date) {
+			  return date.getUTCHours();
+			});
+
+			var utcHours = utcHour.range;
+
+			var utcDay = newInterval(function(date) {
+			  date.setUTCHours(0, 0, 0, 0);
+			}, function(date, step) {
+			  date.setUTCDate(date.getUTCDate() + step);
+			}, function(start, end) {
+			  return (end - start) / durationDay;
+			}, function(date) {
+			  return date.getUTCDate() - 1;
+			});
+
+			var utcDays = utcDay.range;
+
+			function utcWeekday(i) {
+			  return newInterval(function(date) {
+				date.setUTCDate(date.getUTCDate() - (date.getUTCDay() + 7 - i) % 7);
+				date.setUTCHours(0, 0, 0, 0);
+			  }, function(date, step) {
+				date.setUTCDate(date.getUTCDate() + step * 7);
+			  }, function(start, end) {
+				return (end - start) / durationWeek;
+			  });
+			}
+
+			var utcSunday = utcWeekday(0);
+			var utcMonday = utcWeekday(1);
+			var utcTuesday = utcWeekday(2);
+			var utcWednesday = utcWeekday(3);
+			var utcThursday = utcWeekday(4);
+			var utcFriday = utcWeekday(5);
+			var utcSaturday = utcWeekday(6);
+
+			var utcSundays = utcSunday.range;
+			var utcMondays = utcMonday.range;
+			var utcTuesdays = utcTuesday.range;
+			var utcWednesdays = utcWednesday.range;
+			var utcThursdays = utcThursday.range;
+			var utcFridays = utcFriday.range;
+			var utcSaturdays = utcSaturday.range;
+
+			var utcMonth = newInterval(function(date) {
+			  date.setUTCDate(1);
+			  date.setUTCHours(0, 0, 0, 0);
+			}, function(date, step) {
+			  date.setUTCMonth(date.getUTCMonth() + step);
+			}, function(start, end) {
+			  return end.getUTCMonth() - start.getUTCMonth() + (end.getUTCFullYear() - start.getUTCFullYear()) * 12;
+			}, function(date) {
+			  return date.getUTCMonth();
+			});
+
+			var utcMonths = utcMonth.range;
+
+			var utcYear = newInterval(function(date) {
+			  date.setUTCMonth(0, 1);
+			  date.setUTCHours(0, 0, 0, 0);
+			}, function(date, step) {
+			  date.setUTCFullYear(date.getUTCFullYear() + step);
+			}, function(start, end) {
+			  return end.getUTCFullYear() - start.getUTCFullYear();
+			}, function(date) {
+			  return date.getUTCFullYear();
+			});
+
+			// An optimized implementation for this simple case.
+			utcYear.every = function(k) {
+			  return !isFinite(k = Math.floor(k)) || !(k > 0) ? null : newInterval(function(date) {
+				date.setUTCFullYear(Math.floor(date.getUTCFullYear() / k) * k);
+				date.setUTCMonth(0, 1);
+				date.setUTCHours(0, 0, 0, 0);
+			  }, function(date, step) {
+				date.setUTCFullYear(date.getUTCFullYear() + step * k);
+			  });
+			};
+
+			var utcYears = utcYear.range;
+
+			// Computes the decimal coefficient and exponent of the specified number x with
+			// significant digits p, where x is positive and p is in [1, 21] or undefined.
+			// For example, formatDecimal(1.23) returns ["123", 0].
+			var formatDecimal = function(x, p) {
+			  if ((i = (x = p ? x.toExponential(p - 1) : x.toExponential()).indexOf("e")) < 0) return null; // NaN, ±Infinity
+			  var i, coefficient = x.slice(0, i);
+
+			  // The string returned by toExponential either has the form \d\.\d+e[-+]\d+
+			  // (e.g., 1.2e+3) or the form \de[-+]\d+ (e.g., 1e+3).
+			  return [
+				coefficient.length > 1 ? coefficient[0] + coefficient.slice(2) : coefficient,
+				+x.slice(i + 1)
+			  ];
+			};
+
+			var exponent$1 = function(x) {
+			  return x = formatDecimal(Math.abs(x)), x ? x[1] : NaN;
+			};
+
+			var formatGroup = function(grouping, thousands) {
+			  return function(value, width) {
+				var i = value.length,
+					t = [],
+					j = 0,
+					g = grouping[0],
+					length = 0;
+
+				while (i > 0 && g > 0) {
+				  if (length + g + 1 > width) g = Math.max(1, width - length);
+				  t.push(value.substring(i -= g, i + g));
+				  if ((length += g + 1) > width) break;
+				  g = grouping[j = (j + 1) % grouping.length];
+				}
+
+				return t.reverse().join(thousands);
+			  };
+			};
+
+			var formatDefault = function(x, p) {
+			  x = x.toPrecision(p);
+
+			  out: for (var n = x.length, i = 1, i0 = -1, i1; i < n; ++i) {
+				switch (x[i]) {
+				  case ".": i0 = i1 = i; break;
+				  case "0": if (i0 === 0) i0 = i; i1 = i; break;
+				  case "e": break out;
+				  default: if (i0 > 0) i0 = 0; break;
+				}
+			  }
+
+			  return i0 > 0 ? x.slice(0, i0) + x.slice(i1 + 1) : x;
+			};
+
+			var prefixExponent;
+
+			var formatPrefixAuto = function(x, p) {
+			  var d = formatDecimal(x, p);
+			  if (!d) return x + "";
+			  var coefficient = d[0],
+				  exponent = d[1],
+				  i = exponent - (prefixExponent = Math.max(-8, Math.min(8, Math.floor(exponent / 3))) * 3) + 1,
+				  n = coefficient.length;
+			  return i === n ? coefficient
+				  : i > n ? coefficient + new Array(i - n + 1).join("0")
+				  : i > 0 ? coefficient.slice(0, i) + "." + coefficient.slice(i)
+				  : "0." + new Array(1 - i).join("0") + formatDecimal(x, Math.max(0, p + i - 1))[0]; // less than 1y!
+			};
+
+			var formatRounded = function(x, p) {
+			  var d = formatDecimal(x, p);
+			  if (!d) return x + "";
+			  var coefficient = d[0],
+				  exponent = d[1];
+			  return exponent < 0 ? "0." + new Array(-exponent).join("0") + coefficient
+				  : coefficient.length > exponent + 1 ? coefficient.slice(0, exponent + 1) + "." + coefficient.slice(exponent + 1)
+				  : coefficient + new Array(exponent - coefficient.length + 2).join("0");
+			};
+
+			var formatTypes = {
+			  "": formatDefault,
+			  "%": function(x, p) { return (x * 100).toFixed(p); },
+			  "b": function(x) { return Math.round(x).toString(2); },
+			  "c": function(x) { return x + ""; },
+			  "d": function(x) { return Math.round(x).toString(10); },
+			  "e": function(x, p) { return x.toExponential(p); },
+			  "f": function(x, p) { return x.toFixed(p); },
+			  "g": function(x, p) { return x.toPrecision(p); },
+			  "o": function(x) { return Math.round(x).toString(8); },
+			  "p": function(x, p) { return formatRounded(x * 100, p); },
+			  "r": formatRounded,
+			  "s": formatPrefixAuto,
+			  "X": function(x) { return Math.round(x).toString(16).toUpperCase(); },
+			  "x": function(x) { return Math.round(x).toString(16); }
+			};
+
+			// [[fill]align][sign][symbol][0][width][,][.precision][type]
+			var re = /^(?:(.)?([<>=^]))?([+\-\( ])?([$#])?(0)?(\d+)?(,)?(\.\d+)?([a-z%])?$/i;
+
+			var formatSpecifier = function(specifier) {
+			  return new FormatSpecifier(specifier);
+			};
+
+			function FormatSpecifier(specifier) {
+			  if (!(match = re.exec(specifier))) throw new Error("invalid format: " + specifier);
+
+			  var match,
+				  fill = match[1] || " ",
+				  align = match[2] || ">",
+				  sign = match[3] || "-",
+				  symbol = match[4] || "",
+				  zero = !!match[5],
+				  width = match[6] && +match[6],
+				  comma = !!match[7],
+				  precision = match[8] && +match[8].slice(1),
+				  type = match[9] || "";
+
+			  // The "n" type is an alias for ",g".
+			  if (type === "n") comma = true, type = "g";
+
+			  // Map invalid types to the default format.
+			  else if (!formatTypes[type]) type = "";
+
+			  // If zero fill is specified, padding goes after sign and before digits.
+			  if (zero || (fill === "0" && align === "=")) zero = true, fill = "0", align = "=";
+
+			  this.fill = fill;
+			  this.align = align;
+			  this.sign = sign;
+			  this.symbol = symbol;
+			  this.zero = zero;
+			  this.width = width;
+			  this.comma = comma;
+			  this.precision = precision;
+			  this.type = type;
+			}
+
+			FormatSpecifier.prototype.toString = function() {
+			  return this.fill
+				  + this.align
+				  + this.sign
+				  + this.symbol
+				  + (this.zero ? "0" : "")
+				  + (this.width == null ? "" : Math.max(1, this.width | 0))
+				  + (this.comma ? "," : "")
+				  + (this.precision == null ? "" : "." + Math.max(0, this.precision | 0))
+				  + this.type;
+			};
+
+			var prefixes = ["y","z","a","f","p","n","\xB5","m","","k","M","G","T","P","E","Z","Y"];
+
+			function identity$3(x) {
+			  return x;
+			}
+
+			var formatLocale = function(locale) {
+			  var group = locale.grouping && locale.thousands ? formatGroup(locale.grouping, locale.thousands) : identity$3,
+				  currency = locale.currency,
+				  decimal = locale.decimal;
+
+			  function newFormat(specifier) {
+				specifier = formatSpecifier(specifier);
+
+				var fill = specifier.fill,
+					align = specifier.align,
+					sign = specifier.sign,
+					symbol = specifier.symbol,
+					zero = specifier.zero,
+					width = specifier.width,
+					comma = specifier.comma,
+					precision = specifier.precision,
+					type = specifier.type;
+
+				// Compute the prefix and suffix.
+				// For SI-prefix, the suffix is lazily computed.
+				var prefix = symbol === "$" ? currency[0] : symbol === "#" && /[boxX]/.test(type) ? "0" + type.toLowerCase() : "",
+					suffix = symbol === "$" ? currency[1] : /[%p]/.test(type) ? "%" : "";
+
+				// What format function should we use?
+				// Is this an integer type?
+				// Can this type generate exponential notation?
+				var formatType = formatTypes[type],
+					maybeSuffix = !type || /[defgprs%]/.test(type);
+
+				// Set the default precision if not specified,
+				// or clamp the specified precision to the supported range.
+				// For significant precision, it must be in [1, 21].
+				// For fixed precision, it must be in [0, 20].
+				precision = precision == null ? (type ? 6 : 12)
+					: /[gprs]/.test(type) ? Math.max(1, Math.min(21, precision))
+					: Math.max(0, Math.min(20, precision));
+
+				function format(value) {
+				  var valuePrefix = prefix,
+					  valueSuffix = suffix,
+					  i, n, c;
+
+				  if (type === "c") {
+					valueSuffix = formatType(value) + valueSuffix;
+					value = "";
+				  } else {
+					value = +value;
+
+					// Convert negative to positive, and compute the prefix.
+					// Note that -0 is not less than 0, but 1 / -0 is!
+					var valueNegative = (value < 0 || 1 / value < 0) && (value *= -1, true);
+
+					// Perform the initial formatting.
+					value = formatType(value, precision);
+
+					// If the original value was negative, it may be rounded to zero during
+					// formatting; treat this as (positive) zero.
+					if (valueNegative) {
+					  i = -1, n = value.length;
+					  valueNegative = false;
+					  while (++i < n) {
+						if (c = value.charCodeAt(i), (48 < c && c < 58)
+							|| (type === "x" && 96 < c && c < 103)
+							|| (type === "X" && 64 < c && c < 71)) {
+						  valueNegative = true;
+						  break;
+						}
+					  }
+					}
+
+					// Compute the prefix and suffix.
+					valuePrefix = (valueNegative ? (sign === "(" ? sign : "-") : sign === "-" || sign === "(" ? "" : sign) + valuePrefix;
+					valueSuffix = valueSuffix + (type === "s" ? prefixes[8 + prefixExponent / 3] : "") + (valueNegative && sign === "(" ? ")" : "");
+
+					// Break the formatted value into the integer “value” part that can be
+					// grouped, and fractional or exponential “suffix” part that is not.
+					if (maybeSuffix) {
+					  i = -1, n = value.length;
+					  while (++i < n) {
+						if (c = value.charCodeAt(i), 48 > c || c > 57) {
+						  valueSuffix = (c === 46 ? decimal + value.slice(i + 1) : value.slice(i)) + valueSuffix;
+						  value = value.slice(0, i);
+						  break;
+						}
+					  }
+					}
+				  }
+
+				  // If the fill character is not "0", grouping is applied before padding.
+				  if (comma && !zero) value = group(value, Infinity);
+
+				  // Compute the padding.
+				  var length = valuePrefix.length + value.length + valueSuffix.length,
+					  padding = length < width ? new Array(width - length + 1).join(fill) : "";
+
+				  // If the fill character is "0", grouping is applied after padding.
+				  if (comma && zero) value = group(padding + value, padding.length ? width - valueSuffix.length : Infinity), padding = "";
+
+				  // Reconstruct the final output based on the desired alignment.
+				  switch (align) {
+					case "<": return valuePrefix + value + valueSuffix + padding;
+					case "=": return valuePrefix + padding + value + valueSuffix;
+					case "^": return padding.slice(0, length = padding.length >> 1) + valuePrefix + value + valueSuffix + padding.slice(length);
+				  }
+				  return padding + valuePrefix + value + valueSuffix;
+				}
+
+				format.toString = function() {
+				  return specifier + "";
+				};
+
+				return format;
+			  }
+
+			  function formatPrefix(specifier, value) {
+				var f = newFormat((specifier = formatSpecifier(specifier), specifier.type = "f", specifier)),
+					e = Math.max(-8, Math.min(8, Math.floor(exponent$1(value) / 3))) * 3,
+					k = Math.pow(10, -e),
+					prefix = prefixes[8 + e / 3];
+				return function(value) {
+				  return f(k * value) + prefix;
+				};
+			  }
+
+			  return {
+				format: newFormat,
+				formatPrefix: formatPrefix
+			  };
+			};
+
+			var locale$1;
+
+
+
+			defaultLocale({
+			  decimal: ".",
+			  thousands: ",",
+			  grouping: [3],
+			  currency: ["$", ""]
+			});
+
+			function defaultLocale(definition) {
+			  locale$1 = formatLocale(definition);
+			  exports.format = locale$1.format;
+			  exports.formatPrefix = locale$1.formatPrefix;
+			  return locale$1;
+			}
+
+			var precisionFixed = function(step) {
+			  return Math.max(0, -exponent$1(Math.abs(step)));
+			};
+
+			var precisionPrefix = function(step, value) {
+			  return Math.max(0, Math.max(-8, Math.min(8, Math.floor(exponent$1(value) / 3))) * 3 - exponent$1(Math.abs(step)));
+			};
+
+			var precisionRound = function(step, max) {
+			  step = Math.abs(step), max = Math.abs(max) - step;
+			  return Math.max(0, exponent$1(max) - exponent$1(step)) + 1;
+			};
+
+			function localDate(d) {
+			  if (0 <= d.y && d.y < 100) {
+				var date = new Date(-1, d.m, d.d, d.H, d.M, d.S, d.L);
+				date.setFullYear(d.y);
+				return date;
+			  }
+			  return new Date(d.y, d.m, d.d, d.H, d.M, d.S, d.L);
+			}
+
+			function utcDate(d) {
+			  if (0 <= d.y && d.y < 100) {
+				var date = new Date(Date.UTC(-1, d.m, d.d, d.H, d.M, d.S, d.L));
+				date.setUTCFullYear(d.y);
+				return date;
+			  }
+			  return new Date(Date.UTC(d.y, d.m, d.d, d.H, d.M, d.S, d.L));
+			}
+
+			function newYear(y) {
+			  return {y: y, m: 0, d: 1, H: 0, M: 0, S: 0, L: 0};
+			}
+
+			function formatLocale$1(locale) {
+			  var locale_dateTime = locale.dateTime,
+				  locale_date = locale.date,
+				  locale_time = locale.time,
+				  locale_periods = locale.periods,
+				  locale_weekdays = locale.days,
+				  locale_shortWeekdays = locale.shortDays,
+				  locale_months = locale.months,
+				  locale_shortMonths = locale.shortMonths;
+
+			  var periodRe = formatRe(locale_periods),
+				  periodLookup = formatLookup(locale_periods),
+				  weekdayRe = formatRe(locale_weekdays),
+				  weekdayLookup = formatLookup(locale_weekdays),
+				  shortWeekdayRe = formatRe(locale_shortWeekdays),
+				  shortWeekdayLookup = formatLookup(locale_shortWeekdays),
+				  monthRe = formatRe(locale_months),
+				  monthLookup = formatLookup(locale_months),
+				  shortMonthRe = formatRe(locale_shortMonths),
+				  shortMonthLookup = formatLookup(locale_shortMonths);
+
+			  var formats = {
+				"a": formatShortWeekday,
+				"A": formatWeekday,
+				"b": formatShortMonth,
+				"B": formatMonth,
+				"c": null,
+				"d": formatDayOfMonth,
+				"e": formatDayOfMonth,
+				"H": formatHour24,
+				"I": formatHour12,
+				"j": formatDayOfYear,
+				"L": formatMilliseconds,
+				"m": formatMonthNumber,
+				"M": formatMinutes,
+				"p": formatPeriod,
+				"S": formatSeconds,
+				"U": formatWeekNumberSunday,
+				"w": formatWeekdayNumber,
+				"W": formatWeekNumberMonday,
+				"x": null,
+				"X": null,
+				"y": formatYear,
+				"Y": formatFullYear,
+				"Z": formatZone,
+				"%": formatLiteralPercent
+			  };
+
+			  var utcFormats = {
+				"a": formatUTCShortWeekday,
+				"A": formatUTCWeekday,
+				"b": formatUTCShortMonth,
+				"B": formatUTCMonth,
+				"c": null,
+				"d": formatUTCDayOfMonth,
+				"e": formatUTCDayOfMonth,
+				"H": formatUTCHour24,
+				"I": formatUTCHour12,
+				"j": formatUTCDayOfYear,
+				"L": formatUTCMilliseconds,
+				"m": formatUTCMonthNumber,
+				"M": formatUTCMinutes,
+				"p": formatUTCPeriod,
+				"S": formatUTCSeconds,
+				"U": formatUTCWeekNumberSunday,
+				"w": formatUTCWeekdayNumber,
+				"W": formatUTCWeekNumberMonday,
+				"x": null,
+				"X": null,
+				"y": formatUTCYear,
+				"Y": formatUTCFullYear,
+				"Z": formatUTCZone,
+				"%": formatLiteralPercent
+			  };
+
+			  var parses = {
+				"a": parseShortWeekday,
+				"A": parseWeekday,
+				"b": parseShortMonth,
+				"B": parseMonth,
+				"c": parseLocaleDateTime,
+				"d": parseDayOfMonth,
+				"e": parseDayOfMonth,
+				"H": parseHour24,
+				"I": parseHour24,
+				"j": parseDayOfYear,
+				"L": parseMilliseconds,
+				"m": parseMonthNumber,
+				"M": parseMinutes,
+				"p": parsePeriod,
+				"S": parseSeconds,
+				"U": parseWeekNumberSunday,
+				"w": parseWeekdayNumber,
+				"W": parseWeekNumberMonday,
+				"x": parseLocaleDate,
+				"X": parseLocaleTime,
+				"y": parseYear,
+				"Y": parseFullYear,
+				"Z": parseZone,
+				"%": parseLiteralPercent
+			  };
+
+			  // These recursive directive definitions must be deferred.
+			  formats.x = newFormat(locale_date, formats);
+			  formats.X = newFormat(locale_time, formats);
+			  formats.c = newFormat(locale_dateTime, formats);
+			  utcFormats.x = newFormat(locale_date, utcFormats);
+			  utcFormats.X = newFormat(locale_time, utcFormats);
+			  utcFormats.c = newFormat(locale_dateTime, utcFormats);
+
+			  function newFormat(specifier, formats) {
+				return function(date) {
+				  var string = [],
+					  i = -1,
+					  j = 0,
+					  n = specifier.length,
+					  c,
+					  pad,
+					  format;
+
+				  if (!(date instanceof Date)) date = new Date(+date);
+
+				  while (++i < n) {
+					if (specifier.charCodeAt(i) === 37) {
+					  string.push(specifier.slice(j, i));
+					  if ((pad = pads[c = specifier.charAt(++i)]) != null) c = specifier.charAt(++i);
+					  else pad = c === "e" ? " " : "0";
+					  if (format = formats[c]) c = format(date, pad);
+					  string.push(c);
+					  j = i + 1;
+					}
+				  }
+
+				  string.push(specifier.slice(j, i));
+				  return string.join("");
+				};
+			  }
+
+			  function newParse(specifier, newDate) {
+				return function(string) {
+				  var d = newYear(1900),
+					  i = parseSpecifier(d, specifier, string += "", 0);
+				  if (i != string.length) return null;
+
+				  // The am-pm flag is 0 for AM, and 1 for PM.
+				  if ("p" in d) d.H = d.H % 12 + d.p * 12;
+
+				  // Convert day-of-week and week-of-year to day-of-year.
+				  if ("W" in d || "U" in d) {
+					if (!("w" in d)) d.w = "W" in d ? 1 : 0;
+					var day$$1 = "Z" in d ? utcDate(newYear(d.y)).getUTCDay() : newDate(newYear(d.y)).getDay();
+					d.m = 0;
+					d.d = "W" in d ? (d.w + 6) % 7 + d.W * 7 - (day$$1 + 5) % 7 : d.w + d.U * 7 - (day$$1 + 6) % 7;
+				  }
+
+				  // If a time zone is specified, all fields are interpreted as UTC and then
+				  // offset according to the specified time zone.
+				  if ("Z" in d) {
+					d.H += d.Z / 100 | 0;
+					d.M += d.Z % 100;
+					return utcDate(d);
+				  }
+
+				  // Otherwise, all fields are in local time.
+				  return newDate(d);
+				};
+			  }
+
+			  function parseSpecifier(d, specifier, string, j) {
+				var i = 0,
+					n = specifier.length,
+					m = string.length,
+					c,
+					parse;
+
+				while (i < n) {
+				  if (j >= m) return -1;
+				  c = specifier.charCodeAt(i++);
+				  if (c === 37) {
+					c = specifier.charAt(i++);
+					parse = parses[c in pads ? specifier.charAt(i++) : c];
+					if (!parse || ((j = parse(d, string, j)) < 0)) return -1;
+				  } else if (c != string.charCodeAt(j++)) {
+					return -1;
+				  }
+				}
+
+				return j;
+			  }
+
+			  function parsePeriod(d, string, i) {
+				var n = periodRe.exec(string.slice(i));
+				return n ? (d.p = periodLookup[n[0].toLowerCase()], i + n[0].length) : -1;
+			  }
+
+			  function parseShortWeekday(d, string, i) {
+				var n = shortWeekdayRe.exec(string.slice(i));
+				return n ? (d.w = shortWeekdayLookup[n[0].toLowerCase()], i + n[0].length) : -1;
+			  }
+
+			  function parseWeekday(d, string, i) {
+				var n = weekdayRe.exec(string.slice(i));
+				return n ? (d.w = weekdayLookup[n[0].toLowerCase()], i + n[0].length) : -1;
+			  }
+
+			  function parseShortMonth(d, string, i) {
+				var n = shortMonthRe.exec(string.slice(i));
+				return n ? (d.m = shortMonthLookup[n[0].toLowerCase()], i + n[0].length) : -1;
+			  }
+
+			  function parseMonth(d, string, i) {
+				var n = monthRe.exec(string.slice(i));
+				return n ? (d.m = monthLookup[n[0].toLowerCase()], i + n[0].length) : -1;
+			  }
+
+			  function parseLocaleDateTime(d, string, i) {
+				return parseSpecifier(d, locale_dateTime, string, i);
+			  }
+
+			  function parseLocaleDate(d, string, i) {
+				return parseSpecifier(d, locale_date, string, i);
+			  }
+
+			  function parseLocaleTime(d, string, i) {
+				return parseSpecifier(d, locale_time, string, i);
+			  }
+
+			  function formatShortWeekday(d) {
+				return locale_shortWeekdays[d.getDay()];
+			  }
+
+			  function formatWeekday(d) {
+				return locale_weekdays[d.getDay()];
+			  }
+
+			  function formatShortMonth(d) {
+				return locale_shortMonths[d.getMonth()];
+			  }
+
+			  function formatMonth(d) {
+				return locale_months[d.getMonth()];
+			  }
+
+			  function formatPeriod(d) {
+				return locale_periods[+(d.getHours() >= 12)];
+			  }
+
+			  function formatUTCShortWeekday(d) {
+				return locale_shortWeekdays[d.getUTCDay()];
+			  }
+
+			  function formatUTCWeekday(d) {
+				return locale_weekdays[d.getUTCDay()];
+			  }
+
+			  function formatUTCShortMonth(d) {
+				return locale_shortMonths[d.getUTCMonth()];
+			  }
+
+			  function formatUTCMonth(d) {
+				return locale_months[d.getUTCMonth()];
+			  }
+
+			  function formatUTCPeriod(d) {
+				return locale_periods[+(d.getUTCHours() >= 12)];
+			  }
+
+			  return {
+				format: function(specifier) {
+				  var f = newFormat(specifier += "", formats);
+				  f.toString = function() { return specifier; };
+				  return f;
+				},
+				parse: function(specifier) {
+				  var p = newParse(specifier += "", localDate);
+				  p.toString = function() { return specifier; };
+				  return p;
+				},
+				utcFormat: function(specifier) {
+				  var f = newFormat(specifier += "", utcFormats);
+				  f.toString = function() { return specifier; };
+				  return f;
+				},
+				utcParse: function(specifier) {
+				  var p = newParse(specifier, utcDate);
+				  p.toString = function() { return specifier; };
+				  return p;
+				}
+			  };
+			}
+
+			var pads = {"-": "", "_": " ", "0": "0"};
+			var numberRe = /^\s*\d+/;
+			var percentRe = /^%/;
+			var requoteRe = /[\\\^\$\*\+\?\|\[\]\(\)\.\{\}]/g;
+
+			function pad(value, fill, width) {
+			  var sign = value < 0 ? "-" : "",
+				  string = (sign ? -value : value) + "",
+				  length = string.length;
+			  return sign + (length < width ? new Array(width - length + 1).join(fill) + string : string);
+			}
+
+			function requote(s) {
+			  return s.replace(requoteRe, "\\$&");
+			}
+
+			function formatRe(names) {
+			  return new RegExp("^(?:" + names.map(requote).join("|") + ")", "i");
+			}
+
+			function formatLookup(names) {
+			  var map = {}, i = -1, n = names.length;
+			  while (++i < n) map[names[i].toLowerCase()] = i;
+			  return map;
+			}
+
+			function parseWeekdayNumber(d, string, i) {
+			  var n = numberRe.exec(string.slice(i, i + 1));
+			  return n ? (d.w = +n[0], i + n[0].length) : -1;
+			}
+
+			function parseWeekNumberSunday(d, string, i) {
+			  var n = numberRe.exec(string.slice(i));
+			  return n ? (d.U = +n[0], i + n[0].length) : -1;
+			}
+
+			function parseWeekNumberMonday(d, string, i) {
+			  var n = numberRe.exec(string.slice(i));
+			  return n ? (d.W = +n[0], i + n[0].length) : -1;
+			}
+
+			function parseFullYear(d, string, i) {
+			  var n = numberRe.exec(string.slice(i, i + 4));
+			  return n ? (d.y = +n[0], i + n[0].length) : -1;
+			}
+
+			function parseYear(d, string, i) {
+			  var n = numberRe.exec(string.slice(i, i + 2));
+			  return n ? (d.y = +n[0] + (+n[0] > 68 ? 1900 : 2000), i + n[0].length) : -1;
+			}
+
+			function parseZone(d, string, i) {
+			  var n = /^(Z)|([+-]\d\d)(?:\:?(\d\d))?/.exec(string.slice(i, i + 6));
+			  return n ? (d.Z = n[1] ? 0 : -(n[2] + (n[3] || "00")), i + n[0].length) : -1;
+			}
+
+			function parseMonthNumber(d, string, i) {
+			  var n = numberRe.exec(string.slice(i, i + 2));
+			  return n ? (d.m = n[0] - 1, i + n[0].length) : -1;
+			}
+
+			function parseDayOfMonth(d, string, i) {
+			  var n = numberRe.exec(string.slice(i, i + 2));
+			  return n ? (d.d = +n[0], i + n[0].length) : -1;
+			}
+
+			function parseDayOfYear(d, string, i) {
+			  var n = numberRe.exec(string.slice(i, i + 3));
+			  return n ? (d.m = 0, d.d = +n[0], i + n[0].length) : -1;
+			}
+
+			function parseHour24(d, string, i) {
+			  var n = numberRe.exec(string.slice(i, i + 2));
+			  return n ? (d.H = +n[0], i + n[0].length) : -1;
+			}
+
+			function parseMinutes(d, string, i) {
+			  var n = numberRe.exec(string.slice(i, i + 2));
+			  return n ? (d.M = +n[0], i + n[0].length) : -1;
+			}
+
+			function parseSeconds(d, string, i) {
+			  var n = numberRe.exec(string.slice(i, i + 2));
+			  return n ? (d.S = +n[0], i + n[0].length) : -1;
+			}
+
+			function parseMilliseconds(d, string, i) {
+			  var n = numberRe.exec(string.slice(i, i + 3));
+			  return n ? (d.L = +n[0], i + n[0].length) : -1;
+			}
+
+			function parseLiteralPercent(d, string, i) {
+			  var n = percentRe.exec(string.slice(i, i + 1));
+			  return n ? i + n[0].length : -1;
+			}
+
+			function formatDayOfMonth(d, p) {
+			  return pad(d.getDate(), p, 2);
+			}
+
+			function formatHour24(d, p) {
+			  return pad(d.getHours(), p, 2);
+			}
+
+			function formatHour12(d, p) {
+			  return pad(d.getHours() % 12 || 12, p, 2);
+			}
+
+			function formatDayOfYear(d, p) {
+			  return pad(1 + day.count(year(d), d), p, 3);
+			}
+
+			function formatMilliseconds(d, p) {
+			  return pad(d.getMilliseconds(), p, 3);
+			}
+
+			function formatMonthNumber(d, p) {
+			  return pad(d.getMonth() + 1, p, 2);
+			}
+
+			function formatMinutes(d, p) {
+			  return pad(d.getMinutes(), p, 2);
+			}
+
+			function formatSeconds(d, p) {
+			  return pad(d.getSeconds(), p, 2);
+			}
+
+			function formatWeekNumberSunday(d, p) {
+			  return pad(sunday.count(year(d), d), p, 2);
+			}
+
+			function formatWeekdayNumber(d) {
+			  return d.getDay();
+			}
+
+			function formatWeekNumberMonday(d, p) {
+			  return pad(monday.count(year(d), d), p, 2);
+			}
+
+			function formatYear(d, p) {
+			  return pad(d.getFullYear() % 100, p, 2);
+			}
+
+			function formatFullYear(d, p) {
+			  return pad(d.getFullYear() % 10000, p, 4);
+			}
+
+			function formatZone(d) {
+			  var z = d.getTimezoneOffset();
+			  return (z > 0 ? "-" : (z *= -1, "+"))
+				  + pad(z / 60 | 0, "0", 2)
+				  + pad(z % 60, "0", 2);
+			}
+
+			function formatUTCDayOfMonth(d, p) {
+			  return pad(d.getUTCDate(), p, 2);
+			}
+
+			function formatUTCHour24(d, p) {
+			  return pad(d.getUTCHours(), p, 2);
+			}
+
+			function formatUTCHour12(d, p) {
+			  return pad(d.getUTCHours() % 12 || 12, p, 2);
+			}
+
+			function formatUTCDayOfYear(d, p) {
+			  return pad(1 + utcDay.count(utcYear(d), d), p, 3);
+			}
+
+			function formatUTCMilliseconds(d, p) {
+			  return pad(d.getUTCMilliseconds(), p, 3);
+			}
+
+			function formatUTCMonthNumber(d, p) {
+			  return pad(d.getUTCMonth() + 1, p, 2);
+			}
+
+			function formatUTCMinutes(d, p) {
+			  return pad(d.getUTCMinutes(), p, 2);
+			}
+
+			function formatUTCSeconds(d, p) {
+			  return pad(d.getUTCSeconds(), p, 2);
+			}
+
+			function formatUTCWeekNumberSunday(d, p) {
+			  return pad(utcSunday.count(utcYear(d), d), p, 2);
+			}
+
+			function formatUTCWeekdayNumber(d) {
+			  return d.getUTCDay();
+			}
+
+			function formatUTCWeekNumberMonday(d, p) {
+			  return pad(utcMonday.count(utcYear(d), d), p, 2);
+			}
+
+			function formatUTCYear(d, p) {
+			  return pad(d.getUTCFullYear() % 100, p, 2);
+			}
+
+			function formatUTCFullYear(d, p) {
+			  return pad(d.getUTCFullYear() % 10000, p, 4);
+			}
+
+			function formatUTCZone() {
+			  return "+0000";
+			}
+
+			function formatLiteralPercent() {
+			  return "%";
+			}
+
+			var locale$2;
+
+
+
+
+
+			defaultLocale$1({
+			  dateTime: "%x, %X",
+			  date: "%-m/%-d/%Y",
+			  time: "%-I:%M:%S %p",
+			  periods: ["AM", "PM"],
+			  days: ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"],
+			  shortDays: ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"],
+			  months: ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"],
+			  shortMonths: ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]
+			});
+
+			function defaultLocale$1(definition) {
+			  locale$2 = formatLocale$1(definition);
+			  exports.timeFormat = locale$2.format;
+			  exports.timeParse = locale$2.parse;
+			  exports.utcFormat = locale$2.utcFormat;
+			  exports.utcParse = locale$2.utcParse;
+			  return locale$2;
+			}
+
+			var isoSpecifier = "%Y-%m-%dT%H:%M:%S.%LZ";
+
+			function formatIsoNative(date) {
+			  return date.toISOString();
+			}
+
+			var formatIso = Date.prototype.toISOString
+				? formatIsoNative
+				: exports.utcFormat(isoSpecifier);
+
+			function parseIsoNative(string) {
+			  var date = new Date(string);
+			  return isNaN(date) ? null : date;
+			}
+
+			var parseIso = +new Date("2000-01-01T00:00:00.000Z")
+				? parseIsoNative
+				: exports.utcParse(isoSpecifier);
+
+			var array$2 = Array.prototype;
+
+			var map$3 = array$2.map;
+			var slice$3 = array$2.slice;
+
+			var implicit = {name: "implicit"};
+
+			function ordinal(range) {
+			  var index = map$1(),
+				  domain = [],
+				  unknown = implicit;
+
+			  range = range == null ? [] : slice$3.call(range);
+
+			  function scale(d) {
+				var key = d + "", i = index.get(key);
+				if (!i) {
+				  if (unknown !== implicit) return unknown;
+				  index.set(key, i = domain.push(d));
+				}
+				return range[(i - 1) % range.length];
+			  }
+
+			  scale.domain = function(_) {
+				if (!arguments.length) return domain.slice();
+				domain = [], index = map$1();
+				var i = -1, n = _.length, d, key;
+				while (++i < n) if (!index.has(key = (d = _[i]) + "")) index.set(key, domain.push(d));
+				return scale;
+			  };
+
+			  scale.range = function(_) {
+				return arguments.length ? (range = slice$3.call(_), scale) : range.slice();
+			  };
+
+			  scale.unknown = function(_) {
+				return arguments.length ? (unknown = _, scale) : unknown;
+			  };
+
+			  scale.copy = function() {
+				return ordinal()
+					.domain(domain)
+					.range(range)
+					.unknown(unknown);
+			  };
+
+			  return scale;
+			}
+
+			function band() {
+			  var scale = ordinal().unknown(undefined),
+				  domain = scale.domain,
+				  ordinalRange = scale.range,
+				  range$$1 = [0, 1],
+				  step,
+				  bandwidth,
+				  round = false,
+				  paddingInner = 0,
+				  paddingOuter = 0,
+				  align = 0.5;
+
+			  delete scale.unknown;
+
+			  function rescale() {
+				var n = domain().length,
+					reverse = range$$1[1] < range$$1[0],
+					start = range$$1[reverse - 0],
+					stop = range$$1[1 - reverse];
+				step = (stop - start) / Math.max(1, n - paddingInner + paddingOuter * 2);
+				if (round) step = Math.floor(step);
+				start += (stop - start - step * (n - paddingInner)) * align;
+				bandwidth = step * (1 - paddingInner);
+				if (round) start = Math.round(start), bandwidth = Math.round(bandwidth);
+				var values = range(n).map(function(i) { return start + step * i; });
+				return ordinalRange(reverse ? values.reverse() : values);
+			  }
+
+			  scale.domain = function(_) {
+				return arguments.length ? (domain(_), rescale()) : domain();
+			  };
+
+			  scale.range = function(_) {
+				return arguments.length ? (range$$1 = [+_[0], +_[1]], rescale()) : range$$1.slice();
+			  };
+
+			  scale.rangeRound = function(_) {
+				return range$$1 = [+_[0], +_[1]], round = true, rescale();
+			  };
+
+			  scale.bandwidth = function() {
+				return bandwidth;
+			  };
+
+			  scale.step = function() {
+				return step;
+			  };
+
+			  scale.round = function(_) {
+				return arguments.length ? (round = !!_, rescale()) : round;
+			  };
+
+			  scale.padding = function(_) {
+				return arguments.length ? (paddingInner = paddingOuter = Math.max(0, Math.min(1, _)), rescale()) : paddingInner;
+			  };
+
+			  scale.paddingInner = function(_) {
+				return arguments.length ? (paddingInner = Math.max(0, Math.min(1, _)), rescale()) : paddingInner;
+			  };
+
+			  scale.paddingOuter = function(_) {
+				return arguments.length ? (paddingOuter = Math.max(0, Math.min(1, _)), rescale()) : paddingOuter;
+			  };
+
+			  scale.align = function(_) {
+				return arguments.length ? (align = Math.max(0, Math.min(1, _)), rescale()) : align;
+			  };
+
+			  scale.copy = function() {
+				return band()
+					.domain(domain())
+					.range(range$$1)
+					.round(round)
+					.paddingInner(paddingInner)
+					.paddingOuter(paddingOuter)
+					.align(align);
+			  };
+
+			  return rescale();
+			}
+
+			function pointish(scale) {
+			  var copy = scale.copy;
+
+			  scale.padding = scale.paddingOuter;
+			  delete scale.paddingInner;
+			  delete scale.paddingOuter;
+
+			  scale.copy = function() {
+				return pointish(copy());
+			  };
+
+			  return scale;
+			}
+
+			function point$4() {
+			  return pointish(band().paddingInner(1));
+			}
+
+			var constant$4 = function(x) {
+			  return function() {
+				return x;
+			  };
+			};
+
+			var number$1 = function(x) {
+			  return +x;
+			};
+
+			var unit = [0, 1];
+
+			function deinterpolateLinear(a, b) {
+			  return (b -= (a = +a))
+				  ? function(x) { return (x - a) / b; }
+				  : constant$4(b);
+			}
+
+			function deinterpolateClamp(deinterpolate) {
+			  return function(a, b) {
+				var d = deinterpolate(a = +a, b = +b);
+				return function(x) { return x <= a ? 0 : x >= b ? 1 : d(x); };
+			  };
+			}
+
+			function reinterpolateClamp(reinterpolate) {
+			  return function(a, b) {
+				var r = reinterpolate(a = +a, b = +b);
+				return function(t) { return t <= 0 ? a : t >= 1 ? b : r(t); };
+			  };
+			}
+
+			function bimap(domain, range$$1, deinterpolate, reinterpolate) {
+			  var d0 = domain[0], d1 = domain[1], r0 = range$$1[0], r1 = range$$1[1];
+			  if (d1 < d0) d0 = deinterpolate(d1, d0), r0 = reinterpolate(r1, r0);
+			  else d0 = deinterpolate(d0, d1), r0 = reinterpolate(r0, r1);
+			  return function(x) { return r0(d0(x)); };
+			}
+
+			function polymap(domain, range$$1, deinterpolate, reinterpolate) {
+			  var j = Math.min(domain.length, range$$1.length) - 1,
+				  d = new Array(j),
+				  r = new Array(j),
+				  i = -1;
+
+			  // Reverse descending domains.
+			  if (domain[j] < domain[0]) {
+				domain = domain.slice().reverse();
+				range$$1 = range$$1.slice().reverse();
+			  }
+
+			  while (++i < j) {
+				d[i] = deinterpolate(domain[i], domain[i + 1]);
+				r[i] = reinterpolate(range$$1[i], range$$1[i + 1]);
+			  }
+
+			  return function(x) {
+				var i = bisectRight(domain, x, 1, j) - 1;
+				return r[i](d[i](x));
+			  };
+			}
+
+			function copy(source, target) {
+			  return target
+				  .domain(source.domain())
+				  .range(source.range())
+				  .interpolate(source.interpolate())
+				  .clamp(source.clamp());
+			}
+
+			// deinterpolate(a, b)(x) takes a domain value x in [a,b] and returns the corresponding parameter t in [0,1].
+			// reinterpolate(a, b)(t) takes a parameter t in [0,1] and returns the corresponding domain value x in [a,b].
+			function continuous(deinterpolate, reinterpolate) {
+			  var domain = unit,
+				  range$$1 = unit,
+				  interpolate$$1 = interpolate,
+				  clamp = false,
+				  piecewise,
+				  output,
+				  input;
+
+			  function rescale() {
+				piecewise = Math.min(domain.length, range$$1.length) > 2 ? polymap : bimap;
+				output = input = null;
+				return scale;
+			  }
+
+			  function scale(x) {
+				return (output || (output = piecewise(domain, range$$1, clamp ? deinterpolateClamp(deinterpolate) : deinterpolate, interpolate$$1)))(+x);
+			  }
+
+			  scale.invert = function(y) {
+				return (input || (input = piecewise(range$$1, domain, deinterpolateLinear, clamp ? reinterpolateClamp(reinterpolate) : reinterpolate)))(+y);
+			  };
+
+			  scale.domain = function(_) {
+				return arguments.length ? (domain = map$3.call(_, number$1), rescale()) : domain.slice();
+			  };
+
+			  scale.range = function(_) {
+				return arguments.length ? (range$$1 = slice$3.call(_), rescale()) : range$$1.slice();
+			  };
+
+			  scale.rangeRound = function(_) {
+				return range$$1 = slice$3.call(_), interpolate$$1 = interpolateRound, rescale();
+			  };
+
+			  scale.clamp = function(_) {
+				return arguments.length ? (clamp = !!_, rescale()) : clamp;
+			  };
+
+			  scale.interpolate = function(_) {
+				return arguments.length ? (interpolate$$1 = _, rescale()) : interpolate$$1;
+			  };
+
+			  return rescale();
+			}
+
+			var tickFormat = function(domain, count, specifier) {
+			  var start = domain[0],
+				  stop = domain[domain.length - 1],
+				  step = tickStep(start, stop, count == null ? 10 : count),
+				  precision;
+			  specifier = formatSpecifier(specifier == null ? ",f" : specifier);
+			  switch (specifier.type) {
+				case "s": {
+				  var value = Math.max(Math.abs(start), Math.abs(stop));
+				  if (specifier.precision == null && !isNaN(precision = precisionPrefix(step, value))) specifier.precision = precision;
+				  return exports.formatPrefix(specifier, value);
+				}
+				case "":
+				case "e":
+				case "g":
+				case "p":
+				case "r": {
+				  if (specifier.precision == null && !isNaN(precision = precisionRound(step, Math.max(Math.abs(start), Math.abs(stop))))) specifier.precision = precision - (specifier.type === "e");
+				  break;
+				}
+				case "f":
+				case "%": {
+				  if (specifier.precision == null && !isNaN(precision = precisionFixed(step))) specifier.precision = precision - (specifier.type === "%") * 2;
+				  break;
+				}
+			  }
+			  return exports.format(specifier);
+			};
+
+			function linearish(scale) {
+			  var domain = scale.domain;
+
+			  scale.ticks = function(count) {
+				var d = domain();
+				return ticks(d[0], d[d.length - 1], count == null ? 10 : count);
+			  };
+
+			  scale.tickFormat = function(count, specifier) {
+				return tickFormat(domain(), count, specifier);
+			  };
+
+			  scale.nice = function(count) {
+				var d = domain(),
+					i = d.length - 1,
+					n = count == null ? 10 : count,
+					start = d[0],
+					stop = d[i],
+					step = tickStep(start, stop, n);
+
+				if (step) {
+				  step = tickStep(Math.floor(start / step) * step, Math.ceil(stop / step) * step, n);
+				  d[0] = Math.floor(start / step) * step;
+				  d[i] = Math.ceil(stop / step) * step;
+				  domain(d);
+				}
+
+				return scale;
+			  };
+
+			  return scale;
+			}
+
+			function linear$2() {
+			  var scale = continuous(deinterpolateLinear, interpolateNumber);
+
+			  scale.copy = function() {
+				return copy(scale, linear$2());
+			  };
+
+			  return linearish(scale);
+			}
+
+			function identity$4() {
+			  var domain = [0, 1];
+
+			  function scale(x) {
+				return +x;
+			  }
+
+			  scale.invert = scale;
+
+			  scale.domain = scale.range = function(_) {
+				return arguments.length ? (domain = map$3.call(_, number$1), scale) : domain.slice();
+			  };
+
+			  scale.copy = function() {
+				return identity$4().domain(domain);
+			  };
+
+			  return linearish(scale);
+			}
+
+			var nice = function(domain, interval) {
+			  domain = domain.slice();
+
+			  var i0 = 0,
+				  i1 = domain.length - 1,
+				  x0 = domain[i0],
+				  x1 = domain[i1],
+				  t;
+
+			  if (x1 < x0) {
+				t = i0, i0 = i1, i1 = t;
+				t = x0, x0 = x1, x1 = t;
+			  }
+
+			  domain[i0] = interval.floor(x0);
+			  domain[i1] = interval.ceil(x1);
+			  return domain;
+			};
+
+			function deinterpolate(a, b) {
+			  return (b = Math.log(b / a))
+				  ? function(x) { return Math.log(x / a) / b; }
+				  : constant$4(b);
+			}
+
+			function reinterpolate(a, b) {
+			  return a < 0
+				  ? function(t) { return -Math.pow(-b, t) * Math.pow(-a, 1 - t); }
+				  : function(t) { return Math.pow(b, t) * Math.pow(a, 1 - t); };
+			}
+
+			function pow10(x) {
+			  return isFinite(x) ? +("1e" + x) : x < 0 ? 0 : x;
+			}
+
+			function powp(base) {
+			  return base === 10 ? pow10
+				  : base === Math.E ? Math.exp
+				  : function(x) { return Math.pow(base, x); };
+			}
+
+			function logp(base) {
+			  return base === Math.E ? Math.log
+				  : base === 10 && Math.log10
+				  || base === 2 && Math.log2
+				  || (base = Math.log(base), function(x) { return Math.log(x) / base; });
+			}
+
+			function reflect(f) {
+			  return function(x) {
+				return -f(-x);
+			  };
+			}
+
+			function log() {
+			  var scale = continuous(deinterpolate, reinterpolate).domain([1, 10]),
+				  domain = scale.domain,
+				  base = 10,
+				  logs = logp(10),
+				  pows = powp(10);
+
+			  function rescale() {
+				logs = logp(base), pows = powp(base);
+				if (domain()[0] < 0) logs = reflect(logs), pows = reflect(pows);
+				return scale;
+			  }
+
+			  scale.base = function(_) {
+				return arguments.length ? (base = +_, rescale()) : base;
+			  };
+
+			  scale.domain = function(_) {
+				return arguments.length ? (domain(_), rescale()) : domain();
+			  };
+
+			  scale.ticks = function(count) {
+				var d = domain(),
+					u = d[0],
+					v = d[d.length - 1],
+					r;
+
+				if (r = v < u) i = u, u = v, v = i;
+
+				var i = logs(u),
+					j = logs(v),
+					p,
+					k,
+					t,
+					n = count == null ? 10 : +count,
+					z = [];
+
+				if (!(base % 1) && j - i < n) {
+				  i = Math.round(i) - 1, j = Math.round(j) + 1;
+				  if (u > 0) for (; i < j; ++i) {
+					for (k = 1, p = pows(i); k < base; ++k) {
+					  t = p * k;
+					  if (t < u) continue;
+					  if (t > v) break;
+					  z.push(t);
+					}
+				  } else for (; i < j; ++i) {
+					for (k = base - 1, p = pows(i); k >= 1; --k) {
+					  t = p * k;
+					  if (t < u) continue;
+					  if (t > v) break;
+					  z.push(t);
+					}
+				  }
+				} else {
+				  z = ticks(i, j, Math.min(j - i, n)).map(pows);
+				}
+
+				return r ? z.reverse() : z;
+			  };
+
+			  scale.tickFormat = function(count, specifier) {
+				if (specifier == null) specifier = base === 10 ? ".0e" : ",";
+				if (typeof specifier !== "function") specifier = exports.format(specifier);
+				if (count === Infinity) return specifier;
+				if (count == null) count = 10;
+				var k = Math.max(1, base * count / scale.ticks().length); // TODO fast estimate?
+				return function(d) {
+				  var i = d / pows(Math.round(logs(d)));
+				  if (i * base < base - 0.5) i *= base;
+				  return i <= k ? specifier(d) : "";
+				};
+			  };
+
+			  scale.nice = function() {
+				return domain(nice(domain(), {
+				  floor: function(x) { return pows(Math.floor(logs(x))); },
+				  ceil: function(x) { return pows(Math.ceil(logs(x))); }
+				}));
+			  };
+
+			  scale.copy = function() {
+				return copy(scale, log().base(base));
+			  };
+
+			  return scale;
+			}
+
+			function raise(x, exponent) {
+			  return x < 0 ? -Math.pow(-x, exponent) : Math.pow(x, exponent);
+			}
+
+			function pow() {
+			  var exponent = 1,
+				  scale = continuous(deinterpolate, reinterpolate),
+				  domain = scale.domain;
+
+			  function deinterpolate(a, b) {
+				return (b = raise(b, exponent) - (a = raise(a, exponent)))
+					? function(x) { return (raise(x, exponent) - a) / b; }
+					: constant$4(b);
+			  }
+
+			  function reinterpolate(a, b) {
+				b = raise(b, exponent) - (a = raise(a, exponent));
+				return function(t) { return raise(a + b * t, 1 / exponent); };
+			  }
+
+			  scale.exponent = function(_) {
+				return arguments.length ? (exponent = +_, domain(domain())) : exponent;
+			  };
+
+			  scale.copy = function() {
+				return copy(scale, pow().exponent(exponent));
+			  };
+
+			  return linearish(scale);
+			}
+
+			function sqrt() {
+			  return pow().exponent(0.5);
+			}
+
+			function quantile$$1() {
+			  var domain = [],
+				  range$$1 = [],
+				  thresholds = [];
+
+			  function rescale() {
+				var i = 0, n = Math.max(1, range$$1.length);
+				thresholds = new Array(n - 1);
+				while (++i < n) thresholds[i - 1] = threshold(domain, i / n);
+				return scale;
+			  }
+
+			  function scale(x) {
+				if (!isNaN(x = +x)) return range$$1[bisectRight(thresholds, x)];
+			  }
+
+			  scale.invertExtent = function(y) {
+				var i = range$$1.indexOf(y);
+				return i < 0 ? [NaN, NaN] : [
+				  i > 0 ? thresholds[i - 1] : domain[0],
+				  i < thresholds.length ? thresholds[i] : domain[domain.length - 1]
+				];
+			  };
+
+			  scale.domain = function(_) {
+				if (!arguments.length) return domain.slice();
+				domain = [];
+				for (var i = 0, n = _.length, d; i < n; ++i) if (d = _[i], d != null && !isNaN(d = +d)) domain.push(d);
+				domain.sort(ascending);
+				return rescale();
+			  };
+
+			  scale.range = function(_) {
+				return arguments.length ? (range$$1 = slice$3.call(_), rescale()) : range$$1.slice();
+			  };
+
+			  scale.quantiles = function() {
+				return thresholds.slice();
+			  };
+
+			  scale.copy = function() {
+				return quantile$$1()
+					.domain(domain)
+					.range(range$$1);
+			  };
+
+			  return scale;
+			}
+
+			function quantize$1() {
+			  var x0 = 0,
+				  x1 = 1,
+				  n = 1,
+				  domain = [0.5],
+				  range$$1 = [0, 1];
+
+			  function scale(x) {
+				if (x <= x) return range$$1[bisectRight(domain, x, 0, n)];
+			  }
+
+			  function rescale() {
+				var i = -1;
+				domain = new Array(n);
+				while (++i < n) domain[i] = ((i + 1) * x1 - (i - n) * x0) / (n + 1);
+				return scale;
+			  }
+
+			  scale.domain = function(_) {
+				return arguments.length ? (x0 = +_[0], x1 = +_[1], rescale()) : [x0, x1];
+			  };
+
+			  scale.range = function(_) {
+				return arguments.length ? (n = (range$$1 = slice$3.call(_)).length - 1, rescale()) : range$$1.slice();
+			  };
+
+			  scale.invertExtent = function(y) {
+				var i = range$$1.indexOf(y);
+				return i < 0 ? [NaN, NaN]
+					: i < 1 ? [x0, domain[0]]
+					: i >= n ? [domain[n - 1], x1]
+					: [domain[i - 1], domain[i]];
+			  };
+
+			  scale.copy = function() {
+				return quantize$1()
+					.domain([x0, x1])
+					.range(range$$1);
+			  };
+
+			  return linearish(scale);
+			}
+
+			function threshold$1() {
+			  var domain = [0.5],
+				  range$$1 = [0, 1],
+				  n = 1;
+
+			  function scale(x) {
+				if (x <= x) return range$$1[bisectRight(domain, x, 0, n)];
+			  }
+
+			  scale.domain = function(_) {
+				return arguments.length ? (domain = slice$3.call(_), n = Math.min(domain.length, range$$1.length - 1), scale) : domain.slice();
+			  };
+
+			  scale.range = function(_) {
+				return arguments.length ? (range$$1 = slice$3.call(_), n = Math.min(domain.length, range$$1.length - 1), scale) : range$$1.slice();
+			  };
+
+			  scale.invertExtent = function(y) {
+				var i = range$$1.indexOf(y);
+				return [domain[i - 1], domain[i]];
+			  };
+
+			  scale.copy = function() {
+				return threshold$1()
+					.domain(domain)
+					.range(range$$1);
+			  };
+
+			  return scale;
+			}
+
+			var durationSecond$1 = 1000;
+			var durationMinute$1 = durationSecond$1 * 60;
+			var durationHour$1 = durationMinute$1 * 60;
+			var durationDay$1 = durationHour$1 * 24;
+			var durationWeek$1 = durationDay$1 * 7;
+			var durationMonth = durationDay$1 * 30;
+			var durationYear = durationDay$1 * 365;
+
+			function date$1(t) {
+			  return new Date(t);
+			}
+
+			function number$2(t) {
+			  return t instanceof Date ? +t : +new Date(+t);
+			}
+
+			function calendar(year$$1, month$$1, week, day$$1, hour$$1, minute$$1, second$$1, millisecond$$1, format) {
+			  var scale = continuous(deinterpolateLinear, interpolateNumber),
+				  invert = scale.invert,
+				  domain = scale.domain;
+
+			  var formatMillisecond = format(".%L"),
+				  formatSecond = format(":%S"),
+				  formatMinute = format("%I:%M"),
+				  formatHour = format("%I %p"),
+				  formatDay = format("%a %d"),
+				  formatWeek = format("%b %d"),
+				  formatMonth = format("%B"),
+				  formatYear = format("%Y");
+
+			  var tickIntervals = [
+				[second$$1,  1,      durationSecond$1],
+				[second$$1,  5,  5 * durationSecond$1],
+				[second$$1, 15, 15 * durationSecond$1],
+				[second$$1, 30, 30 * durationSecond$1],
+				[minute$$1,  1,      durationMinute$1],
+				[minute$$1,  5,  5 * durationMinute$1],
+				[minute$$1, 15, 15 * durationMinute$1],
+				[minute$$1, 30, 30 * durationMinute$1],
+				[  hour$$1,  1,      durationHour$1  ],
+				[  hour$$1,  3,  3 * durationHour$1  ],
+				[  hour$$1,  6,  6 * durationHour$1  ],
+				[  hour$$1, 12, 12 * durationHour$1  ],
+				[   day$$1,  1,      durationDay$1   ],
+				[   day$$1,  2,  2 * durationDay$1   ],
+				[  week,  1,      durationWeek$1  ],
+				[ month$$1,  1,      durationMonth ],
+				[ month$$1,  3,  3 * durationMonth ],
+				[  year$$1,  1,      durationYear  ]
+			  ];
+
+			  function tickFormat(date) {
+				return (second$$1(date) < date ? formatMillisecond
+					: minute$$1(date) < date ? formatSecond
+					: hour$$1(date) < date ? formatMinute
+					: day$$1(date) < date ? formatHour
+					: month$$1(date) < date ? (week(date) < date ? formatDay : formatWeek)
+					: year$$1(date) < date ? formatMonth
+					: formatYear)(date);
+			  }
+
+			  function tickInterval(interval, start, stop, step) {
+				if (interval == null) interval = 10;
+
+				// If a desired tick count is specified, pick a reasonable tick interval
+				// based on the extent of the domain and a rough estimate of tick size.
+				// Otherwise, assume interval is already a time interval and use it.
+				if (typeof interval === "number") {
+				  var target = Math.abs(stop - start) / interval,
+					  i = bisector(function(i) { return i[2]; }).right(tickIntervals, target);
+				  if (i === tickIntervals.length) {
+					step = tickStep(start / durationYear, stop / durationYear, interval);
+					interval = year$$1;
+				  } else if (i) {
+					i = tickIntervals[target / tickIntervals[i - 1][2] < tickIntervals[i][2] / target ? i - 1 : i];
+					step = i[1];
+					interval = i[0];
+				  } else {
+					step = tickStep(start, stop, interval);
+					interval = millisecond$$1;
+				  }
+				}
+
+				return step == null ? interval : interval.every(step);
+			  }
+
+			  scale.invert = function(y) {
+				return new Date(invert(y));
+			  };
+
+			  scale.domain = function(_) {
+				return arguments.length ? domain(map$3.call(_, number$2)) : domain().map(date$1);
+			  };
+
+			  scale.ticks = function(interval, step) {
+				var d = domain(),
+					t0 = d[0],
+					t1 = d[d.length - 1],
+					r = t1 < t0,
+					t;
+				if (r) t = t0, t0 = t1, t1 = t;
+				t = tickInterval(interval, t0, t1, step);
+				t = t ? t.range(t0, t1 + 1) : []; // inclusive stop
+				return r ? t.reverse() : t;
+			  };
+
+			  scale.tickFormat = function(count, specifier) {
+				return specifier == null ? tickFormat : format(specifier);
+			  };
+
+			  scale.nice = function(interval, step) {
+				var d = domain();
+				return (interval = tickInterval(interval, d[0], d[d.length - 1], step))
+					? domain(nice(d, interval))
+					: scale;
+			  };
+
+			  scale.copy = function() {
+				return copy(scale, calendar(year$$1, month$$1, week, day$$1, hour$$1, minute$$1, second$$1, millisecond$$1, format));
+			  };
+
+			  return scale;
+			}
+
+			var time = function() {
+			  return calendar(year, month, sunday, day, hour, minute, second, millisecond, exports.timeFormat).domain([new Date(2000, 0, 1), new Date(2000, 0, 2)]);
+			};
+
+			var utcTime = function() {
+			  return calendar(utcYear, utcMonth, utcSunday, utcDay, utcHour, utcMinute, second, millisecond, exports.utcFormat).domain([Date.UTC(2000, 0, 1), Date.UTC(2000, 0, 2)]);
+			};
+
+			var colors = function(s) {
+			  return s.match(/.{6}/g).map(function(x) {
+				return "#" + x;
+			  });
+			};
+
+			var category10 = colors("1f77b4ff7f0e2ca02cd627289467bd8c564be377c27f7f7fbcbd2217becf");
+
+			var category20b = colors("393b795254a36b6ecf9c9ede6379398ca252b5cf6bcedb9c8c6d31bd9e39e7ba52e7cb94843c39ad494ad6616be7969c7b4173a55194ce6dbdde9ed6");
+
+			var category20c = colors("3182bd6baed69ecae1c6dbefe6550dfd8d3cfdae6bfdd0a231a35474c476a1d99bc7e9c0756bb19e9ac8bcbddcdadaeb636363969696bdbdbdd9d9d9");
+
+			var category20 = colors("1f77b4aec7e8ff7f0effbb782ca02c98df8ad62728ff98969467bdc5b0d58c564bc49c94e377c2f7b6d27f7f7fc7c7c7bcbd22dbdb8d17becf9edae5");
+
+			var cubehelix$3 = cubehelixLong(cubehelix(300, 0.5, 0.0), cubehelix(-240, 0.5, 1.0));
+
+			var warm = cubehelixLong(cubehelix(-100, 0.75, 0.35), cubehelix(80, 1.50, 0.8));
+
+			var cool = cubehelixLong(cubehelix(260, 0.75, 0.35), cubehelix(80, 1.50, 0.8));
+
+			var rainbow = cubehelix();
+
+			var rainbow$1 = function(t) {
+			  if (t < 0 || t > 1) t -= Math.floor(t);
+			  var ts = Math.abs(t - 0.5);
+			  rainbow.h = 360 * t - 100;
+			  rainbow.s = 1.5 - 1.5 * ts;
+			  rainbow.l = 0.8 - 0.9 * ts;
+			  return rainbow + "";
+			};
+
+			function ramp(range) {
+			  var n = range.length;
+			  return function(t) {
+				return range[Math.max(0, Math.min(n - 1, Math.floor(t * n)))];
+			  };
+			}
+
+			var viridis = ramp(colors("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"));
+
+			var magma = ramp(colors("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"));
+
+			var inferno = ramp(colors("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"));
+
+			var plasma = ramp(colors("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"));
+
+			function sequential(interpolator) {
+			  var x0 = 0,
+				  x1 = 1,
+				  clamp = false;
+
+			  function scale(x) {
+				var t = (x - x0) / (x1 - x0);
+				return interpolator(clamp ? Math.max(0, Math.min(1, t)) : t);
+			  }
+
+			  scale.domain = function(_) {
+				return arguments.length ? (x0 = +_[0], x1 = +_[1], scale) : [x0, x1];
+			  };
+
+			  scale.clamp = function(_) {
+				return arguments.length ? (clamp = !!_, scale) : clamp;
+			  };
+
+			  scale.interpolator = function(_) {
+				return arguments.length ? (interpolator = _, scale) : interpolator;
+			  };
+
+			  scale.copy = function() {
+				return sequential(interpolator).domain([x0, x1]).clamp(clamp);
+			  };
+
+			  return linearish(scale);
+			}
+
+			var xhtml = "http://www.w3.org/1999/xhtml";
+
+			var namespaces = {
+			  svg: "http://www.w3.org/2000/svg",
+			  xhtml: xhtml,
+			  xlink: "http://www.w3.org/1999/xlink",
+			  xml: "http://www.w3.org/XML/1998/namespace",
+			  xmlns: "http://www.w3.org/2000/xmlns/"
+			};
+
+			var namespace = function(name) {
+			  var prefix = name += "", i = prefix.indexOf(":");
+			  if (i >= 0 && (prefix = name.slice(0, i)) !== "xmlns") name = name.slice(i + 1);
+			  return namespaces.hasOwnProperty(prefix) ? {space: namespaces[prefix], local: name} : name;
+			};
+
+			function creatorInherit(name) {
+			  return function() {
+				var document = this.ownerDocument,
+					uri = this.namespaceURI;
+				return uri === xhtml && document.documentElement.namespaceURI === xhtml
+					? document.createElement(name)
+					: document.createElementNS(uri, name);
+			  };
+			}
+
+			function creatorFixed(fullname) {
+			  return function() {
+				return this.ownerDocument.createElementNS(fullname.space, fullname.local);
+			  };
+			}
+
+			var creator = function(name) {
+			  var fullname = namespace(name);
+			  return (fullname.local
+				  ? creatorFixed
+				  : creatorInherit)(fullname);
+			};
+
+			var nextId = 0;
+
+			function local() {
+			  return new Local;
+			}
+
+			function Local() {
+			  this._ = "@" + (++nextId).toString(36);
+			}
+
+			Local.prototype = local.prototype = {
+			  constructor: Local,
+			  get: function(node) {
+				var id = this._;
+				while (!(id in node)) if (!(node = node.parentNode)) return;
+				return node[id];
+			  },
+			  set: function(node, value) {
+				return node[this._] = value;
+			  },
+			  remove: function(node) {
+				return this._ in node && delete node[this._];
+			  },
+			  toString: function() {
+				return this._;
+			  }
+			};
+
+			var matcher = function(selector) {
+			  return function() {
+				return this.matches(selector);
+			  };
+			};
+
+			if (typeof document !== "undefined") {
+			  var element = document.documentElement;
+			  if (!element.matches) {
+				var vendorMatches = element.webkitMatchesSelector
+					|| element.msMatchesSelector
+					|| element.mozMatchesSelector
+					|| element.oMatchesSelector;
+				matcher = function(selector) {
+				  return function() {
+					return vendorMatches.call(this, selector);
+				  };
+				};
+			  }
+			}
+
+			var matcher$1 = matcher;
+
+			var filterEvents = {};
+
+			exports.event = null;
+
+			if (typeof document !== "undefined") {
+			  var element$1 = document.documentElement;
+			  if (!("onmouseenter" in element$1)) {
+				filterEvents = {mouseenter: "mouseover", mouseleave: "mouseout"};
+			  }
+			}
+
+			function filterContextListener(listener, index, group) {
+			  listener = contextListener(listener, index, group);
+			  return function(event) {
+				var related = event.relatedTarget;
+				if (!related || (related !== this && !(related.compareDocumentPosition(this) & 8))) {
+				  listener.call(this, event);
+				}
+			  };
+			}
+
+			function contextListener(listener, index, group) {
+			  return function(event1) {
+				var event0 = exports.event; // Events can be reentrant (e.g., focus).
+				exports.event = event1;
+				try {
+				  listener.call(this, this.__data__, index, group);
+				} finally {
+				  exports.event = event0;
+				}
+			  };
+			}
+
+			function parseTypenames$1(typenames) {
+			  return typenames.trim().split(/^|\s+/).map(function(t) {
+				var name = "", i = t.indexOf(".");
+				if (i >= 0) name = t.slice(i + 1), t = t.slice(0, i);
+				return {type: t, name: name};
+			  });
+			}
+
+			function onRemove(typename) {
+			  return function() {
+				var on = this.__on;
+				if (!on) return;
+				for (var j = 0, i = -1, m = on.length, o; j < m; ++j) {
+				  if (o = on[j], (!typename.type || o.type === typename.type) && o.name === typename.name) {
+					this.removeEventListener(o.type, o.listener, o.capture);
+				  } else {
+					on[++i] = o;
+				  }
+				}
+				if (++i) on.length = i;
+				else delete this.__on;
+			  };
+			}
+
+			function onAdd(typename, value, capture) {
+			  var wrap = filterEvents.hasOwnProperty(typename.type) ? filterContextListener : contextListener;
+			  return function(d, i, group) {
+				var on = this.__on, o, listener = wrap(value, i, group);
+				if (on) for (var j = 0, m = on.length; j < m; ++j) {
+				  if ((o = on[j]).type === typename.type && o.name === typename.name) {
+					this.removeEventListener(o.type, o.listener, o.capture);
+					this.addEventListener(o.type, o.listener = listener, o.capture = capture);
+					o.value = value;
+					return;
+				  }
+				}
+				this.addEventListener(typename.type, listener, capture);
+				o = {type: typename.type, name: typename.name, value: value, listener: listener, capture: capture};
+				if (!on) this.__on = [o];
+				else on.push(o);
+			  };
+			}
+
+			var selection_on = function(typename, value, capture) {
+			  var typenames = parseTypenames$1(typename + ""), i, n = typenames.length, t;
+
+			  if (arguments.length < 2) {
+				var on = this.node().__on;
+				if (on) for (var j = 0, m = on.length, o; j < m; ++j) {
+				  for (i = 0, o = on[j]; i < n; ++i) {
+					if ((t = typenames[i]).type === o.type && t.name === o.name) {
+					  return o.value;
+					}
+				  }
+				}
+				return;
+			  }
+
+			  on = value ? onAdd : onRemove;
+			  if (capture == null) capture = false;
+			  for (i = 0; i < n; ++i) this.each(on(typenames[i], value, capture));
+			  return this;
+			};
+
+			function customEvent(event1, listener, that, args) {
+			  var event0 = exports.event;
+			  event1.sourceEvent = exports.event;
+			  exports.event = event1;
+			  try {
+				return listener.apply(that, args);
+			  } finally {
+				exports.event = event0;
+			  }
+			}
+
+			var sourceEvent = function() {
+			  var current = exports.event, source;
+			  while (source = current.sourceEvent) current = source;
+			  return current;
+			};
+
+			var point$5 = function(node, event) {
+			  var svg = node.ownerSVGElement || node;
+
+			  if (svg.createSVGPoint) {
+				var point = svg.createSVGPoint();
+				point.x = event.clientX, point.y = event.clientY;
+				point = point.matrixTransform(node.getScreenCTM().inverse());
+				return [point.x, point.y];
+			  }
+
+			  var rect = node.getBoundingClientRect();
+			  return [event.clientX - rect.left - node.clientLeft, event.clientY - rect.top - node.clientTop];
+			};
+
+			var mouse = function(node) {
+			  var event = sourceEvent();
+			  if (event.changedTouches) event = event.changedTouches[0];
+			  return point$5(node, event);
+			};
+
+			function none$2() {}
+
+			var selector = function(selector) {
+			  return selector == null ? none$2 : function() {
+				return this.querySelector(selector);
+			  };
+			};
+
+			var selection_select = function(select) {
+			  if (typeof select !== "function") select = selector(select);
+
+			  for (var groups = this._groups, m = groups.length, subgroups = new Array(m), j = 0; j < m; ++j) {
+				for (var group = groups[j], n = group.length, subgroup = subgroups[j] = new Array(n), node, subnode, i = 0; i < n; ++i) {
+				  if ((node = group[i]) && (subnode = select.call(node, node.__data__, i, group))) {
+					if ("__data__" in node) subnode.__data__ = node.__data__;
+					subgroup[i] = subnode;
+				  }
+				}
+			  }
+
+			  return new Selection(subgroups, this._parents);
+			};
+
+			function empty() {
+			  return [];
+			}
+
+			var selectorAll = function(selector) {
+			  return selector == null ? empty : function() {
+				return this.querySelectorAll(selector);
+			  };
+			};
+
+			var selection_selectAll = function(select) {
+			  if (typeof select !== "function") select = selectorAll(select);
+
+			  for (var groups = this._groups, m = groups.length, subgroups = [], parents = [], j = 0; j < m; ++j) {
+				for (var group = groups[j], n = group.length, node, i = 0; i < n; ++i) {
+				  if (node = group[i]) {
+					subgroups.push(select.call(node, node.__data__, i, group));
+					parents.push(node);
+				  }
+				}
+			  }
+
+			  return new Selection(subgroups, parents);
+			};
+
+			var selection_filter = function(match) {
+			  if (typeof match !== "function") match = matcher$1(match);
+
+			  for (var groups = this._groups, m = groups.length, subgroups = new Array(m), j = 0; j < m; ++j) {
+				for (var group = groups[j], n = group.length, subgroup = subgroups[j] = [], node, i = 0; i < n; ++i) {
+				  if ((node = group[i]) && match.call(node, node.__data__, i, group)) {
+					subgroup.push(node);
+				  }
+				}
+			  }
+
+			  return new Selection(subgroups, this._parents);
+			};
+
+			var sparse = function(update) {
+			  return new Array(update.length);
+			};
+
+			var selection_enter = function() {
+			  return new Selection(this._enter || this._groups.map(sparse), this._parents);
+			};
+
+			function EnterNode(parent, datum) {
+			  this.ownerDocument = parent.ownerDocument;
+			  this.namespaceURI = parent.namespaceURI;
+			  this._next = null;
+			  this._parent = parent;
+			  this.__data__ = datum;
+			}
+
+			EnterNode.prototype = {
+			  constructor: EnterNode,
+			  appendChild: function(child) { return this._parent.insertBefore(child, this._next); },
+			  insertBefore: function(child, next) { return this._parent.insertBefore(child, next); },
+			  querySelector: function(selector) { return this._parent.querySelector(selector); },
+			  querySelectorAll: function(selector) { return this._parent.querySelectorAll(selector); }
+			};
+
+			var constant$5 = function(x) {
+			  return function() {
+				return x;
+			  };
+			};
+
+			var keyPrefix = "$"; // Protect against keys like “__proto__”.
+
+			function bindIndex(parent, group, enter, update, exit, data) {
+			  var i = 0,
+				  node,
+				  groupLength = group.length,
+				  dataLength = data.length;
+
+			  // Put any non-null nodes that fit into update.
+			  // Put any null nodes into enter.
+			  // Put any remaining data into enter.
+			  for (; i < dataLength; ++i) {
+				if (node = group[i]) {
+				  node.__data__ = data[i];
+				  update[i] = node;
+				} else {
+				  enter[i] = new EnterNode(parent, data[i]);
+				}
+			  }
+
+			  // Put any non-null nodes that don’t fit into exit.
+			  for (; i < groupLength; ++i) {
+				if (node = group[i]) {
+				  exit[i] = node;
+				}
+			  }
+			}
+
+			function bindKey(parent, group, enter, update, exit, data, key) {
+			  var i,
+				  node,
+				  nodeByKeyValue = {},
+				  groupLength = group.length,
+				  dataLength = data.length,
+				  keyValues = new Array(groupLength),
+				  keyValue;
+
+			  // Compute the key for each node.
+			  // If multiple nodes have the same key, the duplicates are added to exit.
+			  for (i = 0; i < groupLength; ++i) {
+				if (node = group[i]) {
+				  keyValues[i] = keyValue = keyPrefix + key.call(node, node.__data__, i, group);
+				  if (keyValue in nodeByKeyValue) {
+					exit[i] = node;
+				  } else {
+					nodeByKeyValue[keyValue] = node;
+				  }
+				}
+			  }
+
+			  // Compute the key for each datum.
+			  // If there a node associated with this key, join and add it to update.
+			  // If there is not (or the key is a duplicate), add it to enter.
+			  for (i = 0; i < dataLength; ++i) {
+				keyValue = keyPrefix + key.call(parent, data[i], i, data);
+				if (node = nodeByKeyValue[keyValue]) {
+				  update[i] = node;
+				  node.__data__ = data[i];
+				  nodeByKeyValue[keyValue] = null;
+				} else {
+				  enter[i] = new EnterNode(parent, data[i]);
+				}
+			  }
+
+			  // Add any remaining nodes that were not bound to data to exit.
+			  for (i = 0; i < groupLength; ++i) {
+				if ((node = group[i]) && (nodeByKeyValue[keyValues[i]] === node)) {
+				  exit[i] = node;
+				}
+			  }
+			}
+
+			var selection_data = function(value, key) {
+			  if (!value) {
+				data = new Array(this.size()), j = -1;
+				this.each(function(d) { data[++j] = d; });
+				return data;
+			  }
+
+			  var bind = key ? bindKey : bindIndex,
+				  parents = this._parents,
+				  groups = this._groups;
+
+			  if (typeof value !== "function") value = constant$5(value);
+
+			  for (var m = groups.length, update = new Array(m), enter = new Array(m), exit = new Array(m), j = 0; j < m; ++j) {
+				var parent = parents[j],
+					group = groups[j],
+					groupLength = group.length,
+					data = value.call(parent, parent && parent.__data__, j, parents),
+					dataLength = data.length,
+					enterGroup = enter[j] = new Array(dataLength),
+					updateGroup = update[j] = new Array(dataLength),
+					exitGroup = exit[j] = new Array(groupLength);
+
+				bind(parent, group, enterGroup, updateGroup, exitGroup, data, key);
+
+				// Now connect the enter nodes to their following update node, such that
+				// appendChild can insert the materialized enter node before this node,
+				// rather than at the end of the parent node.
+				for (var i0 = 0, i1 = 0, previous, next; i0 < dataLength; ++i0) {
+				  if (previous = enterGroup[i0]) {
+					if (i0 >= i1) i1 = i0 + 1;
+					while (!(next = updateGroup[i1]) && ++i1 < dataLength);
+					previous._next = next || null;
+				  }
+				}
+			  }
+
+			  update = new Selection(update, parents);
+			  update._enter = enter;
+			  update._exit = exit;
+			  return update;
+			};
+
+			var selection_exit = function() {
+			  return new Selection(this._exit || this._groups.map(sparse), this._parents);
+			};
+
+			var selection_merge = function(selection) {
+
+			  for (var groups0 = this._groups, groups1 = selection._groups, m0 = groups0.length, m1 = groups1.length, m = Math.min(m0, m1), merges = new Array(m0), j = 0; j < m; ++j) {
+				for (var group0 = groups0[j], group1 = groups1[j], n = group0.length, merge = merges[j] = new Array(n), node, i = 0; i < n; ++i) {
+				  if (node = group0[i] || group1[i]) {
+					merge[i] = node;
+				  }
+				}
+			  }
+
+			  for (; j < m0; ++j) {
+				merges[j] = groups0[j];
+			  }
+
+			  return new Selection(merges, this._parents);
+			};
+
+			var selection_order = function() {
+
+			  for (var groups = this._groups, j = -1, m = groups.length; ++j < m;) {
+				for (var group = groups[j], i = group.length - 1, next = group[i], node; --i >= 0;) {
+				  if (node = group[i]) {
+					if (next && next !== node.nextSibling) next.parentNode.insertBefore(node, next);
+					next = node;
+				  }
+				}
+			  }
+
+			  return this;
+			};
+
+			var selection_sort = function(compare) {
+			  if (!compare) compare = ascending$2;
+
+			  function compareNode(a, b) {
+				return a && b ? compare(a.__data__, b.__data__) : !a - !b;
+			  }
+
+			  for (var groups = this._groups, m = groups.length, sortgroups = new Array(m), j = 0; j < m; ++j) {
+				for (var group = groups[j], n = group.length, sortgroup = sortgroups[j] = new Array(n), node, i = 0; i < n; ++i) {
+				  if (node = group[i]) {
+					sortgroup[i] = node;
+				  }
+				}
+				sortgroup.sort(compareNode);
+			  }
+
+			  return new Selection(sortgroups, this._parents).order();
+			};
+
+			function ascending$2(a, b) {
+			  return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN;
+			}
+
+			var selection_call = function() {
+			  var callback = arguments[0];
+			  arguments[0] = this;
+			  callback.apply(null, arguments);
+			  return this;
+			};
+
+			var selection_nodes = function() {
+			  var nodes = new Array(this.size()), i = -1;
+			  this.each(function() { nodes[++i] = this; });
+			  return nodes;
+			};
+
+			var selection_node = function() {
+
+			  for (var groups = this._groups, j = 0, m = groups.length; j < m; ++j) {
+				for (var group = groups[j], i = 0, n = group.length; i < n; ++i) {
+				  var node = group[i];
+				  if (node) return node;
+				}
+			  }
+
+			  return null;
+			};
+
+			var selection_size = function() {
+			  var size = 0;
+			  this.each(function() { ++size; });
+			  return size;
+			};
+
+			var selection_empty = function() {
+			  return !this.node();
+			};
+
+			var selection_each = function(callback) {
+
+			  for (var groups = this._groups, j = 0, m = groups.length; j < m; ++j) {
+				for (var group = groups[j], i = 0, n = group.length, node; i < n; ++i) {
+				  if (node = group[i]) callback.call(node, node.__data__, i, group);
+				}
+			  }
+
+			  return this;
+			};
+
+			function attrRemove(name) {
+			  return function() {
+				this.removeAttribute(name);
+			  };
+			}
+
+			function attrRemoveNS(fullname) {
+			  return function() {
+				this.removeAttributeNS(fullname.space, fullname.local);
+			  };
+			}
+
+			function attrConstant(name, value) {
+			  return function() {
+				this.setAttribute(name, value);
+			  };
+			}
+
+			function attrConstantNS(fullname, value) {
+			  return function() {
+				this.setAttributeNS(fullname.space, fullname.local, value);
+			  };
+			}
+
+			function attrFunction(name, value) {
+			  return function() {
+				var v = value.apply(this, arguments);
+				if (v == null) this.removeAttribute(name);
+				else this.setAttribute(name, v);
+			  };
+			}
+
+			function attrFunctionNS(fullname, value) {
+			  return function() {
+				var v = value.apply(this, arguments);
+				if (v == null) this.removeAttributeNS(fullname.space, fullname.local);
+				else this.setAttributeNS(fullname.space, fullname.local, v);
+			  };
+			}
+
+			var selection_attr = function(name, value) {
+			  var fullname = namespace(name);
+
+			  if (arguments.length < 2) {
+				var node = this.node();
+				return fullname.local
+					? node.getAttributeNS(fullname.space, fullname.local)
+					: node.getAttribute(fullname);
+			  }
+
+			  return this.each((value == null
+				  ? (fullname.local ? attrRemoveNS : attrRemove) : (typeof value === "function"
+				  ? (fullname.local ? attrFunctionNS : attrFunction)
+				  : (fullname.local ? attrConstantNS : attrConstant)))(fullname, value));
+			};
+
+			var window = function(node) {
+			  return (node.ownerDocument && node.ownerDocument.defaultView) // node is a Node
+				  || (node.document && node) // node is a Window
+				  || node.defaultView; // node is a Document
+			};
+
+			function styleRemove(name) {
+			  return function() {
+				this.style.removeProperty(name);
+			  };
+			}
+
+			function styleConstant(name, value, priority) {
+			  return function() {
+				this.style.setProperty(name, value, priority);
+			  };
+			}
+
+			function styleFunction(name, value, priority) {
+			  return function() {
+				var v = value.apply(this, arguments);
+				if (v == null) this.style.removeProperty(name);
+				else this.style.setProperty(name, v, priority);
+			  };
+			}
+
+			var selection_style = function(name, value, priority) {
+			  var node;
+			  return arguments.length > 1
+				  ? this.each((value == null
+						? styleRemove : typeof value === "function"
+						? styleFunction
+						: styleConstant)(name, value, priority == null ? "" : priority))
+				  : window(node = this.node())
+					  .getComputedStyle(node, null)
+					  .getPropertyValue(name);
+			};
+
+			function propertyRemove(name) {
+			  return function() {
+				delete this[name];
+			  };
+			}
+
+			function propertyConstant(name, value) {
+			  return function() {
+				this[name] = value;
+			  };
+			}
+
+			function propertyFunction(name, value) {
+			  return function() {
+				var v = value.apply(this, arguments);
+				if (v == null) delete this[name];
+				else this[name] = v;
+			  };
+			}
+
+			var selection_property = function(name, value) {
+			  return arguments.length > 1
+				  ? this.each((value == null
+					  ? propertyRemove : typeof value === "function"
+					  ? propertyFunction
+					  : propertyConstant)(name, value))
+				  : this.node()[name];
+			};
+
+			function classArray(string) {
+			  return string.trim().split(/^|\s+/);
+			}
+
+			function classList(node) {
+			  return node.classList || new ClassList(node);
+			}
+
+			function ClassList(node) {
+			  this._node = node;
+			  this._names = classArray(node.getAttribute("class") || "");
+			}
+
+			ClassList.prototype = {
+			  add: function(name) {
+				var i = this._names.indexOf(name);
+				if (i < 0) {
+				  this._names.push(name);
+				  this._node.setAttribute("class", this._names.join(" "));
+				}
+			  },
+			  remove: function(name) {
+				var i = this._names.indexOf(name);
+				if (i >= 0) {
+				  this._names.splice(i, 1);
+				  this._node.setAttribute("class", this._names.join(" "));
+				}
+			  },
+			  contains: function(name) {
+				return this._names.indexOf(name) >= 0;
+			  }
+			};
+
+			function classedAdd(node, names) {
+			  var list = classList(node), i = -1, n = names.length;
+			  while (++i < n) list.add(names[i]);
+			}
+
+			function classedRemove(node, names) {
+			  var list = classList(node), i = -1, n = names.length;
+			  while (++i < n) list.remove(names[i]);
+			}
+
+			function classedTrue(names) {
+			  return function() {
+				classedAdd(this, names);
+			  };
+			}
+
+			function classedFalse(names) {
+			  return function() {
+				classedRemove(this, names);
+			  };
+			}
+
+			function classedFunction(names, value) {
+			  return function() {
+				(value.apply(this, arguments) ? classedAdd : classedRemove)(this, names);
+			  };
+			}
+
+			var selection_classed = function(name, value) {
+			  var names = classArray(name + "");
+
+			  if (arguments.length < 2) {
+				var list = classList(this.node()), i = -1, n = names.length;
+				while (++i < n) if (!list.contains(names[i])) return false;
+				return true;
+			  }
+
+			  return this.each((typeof value === "function"
+				  ? classedFunction : value
+				  ? classedTrue
+				  : classedFalse)(names, value));
+			};
+
+			function textRemove() {
+			  this.textContent = "";
+			}
+
+			function textConstant(value) {
+			  return function() {
+				this.textContent = value;
+			  };
+			}
+
+			function textFunction(value) {
+			  return function() {
+				var v = value.apply(this, arguments);
+				this.textContent = v == null ? "" : v;
+			  };
+			}
+
+			var selection_text = function(value) {
+			  return arguments.length
+				  ? this.each(value == null
+					  ? textRemove : (typeof value === "function"
+					  ? textFunction
+					  : textConstant)(value))
+				  : this.node().textContent;
+			};
+
+			function htmlRemove() {
+			  this.innerHTML = "";
+			}
+
+			function htmlConstant(value) {
+			  return function() {
+				this.innerHTML = value;
+			  };
+			}
+
+			function htmlFunction(value) {
+			  return function() {
+				var v = value.apply(this, arguments);
+				this.innerHTML = v == null ? "" : v;
+			  };
+			}
+
+			var selection_html = function(value) {
+			  return arguments.length
+				  ? this.each(value == null
+					  ? htmlRemove : (typeof value === "function"
+					  ? htmlFunction
+					  : htmlConstant)(value))
+				  : this.node().innerHTML;
+			};
+
+			function raise$1() {
+			  if (this.nextSibling) this.parentNode.appendChild(this);
+			}
+
+			var selection_raise = function() {
+			  return this.each(raise$1);
+			};
+
+			function lower() {
+			  if (this.previousSibling) this.parentNode.insertBefore(this, this.parentNode.firstChild);
+			}
+
+			var selection_lower = function() {
+			  return this.each(lower);
+			};
+
+			var selection_append = function(name) {
+			  var create = typeof name === "function" ? name : creator(name);
+			  return this.select(function() {
+				return this.appendChild(create.apply(this, arguments));
+			  });
+			};
+
+			function constantNull() {
+			  return null;
+			}
+
+			var selection_insert = function(name, before) {
+			  var create = typeof name === "function" ? name : creator(name),
+				  select = before == null ? constantNull : typeof before === "function" ? before : selector(before);
+			  return this.select(function() {
+				return this.insertBefore(create.apply(this, arguments), select.apply(this, arguments) || null);
+			  });
+			};
+
+			function remove() {
+			  var parent = this.parentNode;
+			  if (parent) parent.removeChild(this);
+			}
+
+			var selection_remove = function() {
+			  return this.each(remove);
+			};
+
+			var selection_datum = function(value) {
+			  return arguments.length
+				  ? this.property("__data__", value)
+				  : this.node().__data__;
+			};
+
+			function dispatchEvent(node, type, params) {
+			  var window$$1 = window(node),
+				  event = window$$1.CustomEvent;
+
+			  if (event) {
+				event = new event(type, params);
+			  } else {
+				event = window$$1.document.createEvent("Event");
+				if (params) event.initEvent(type, params.bubbles, params.cancelable), event.detail = params.detail;
+				else event.initEvent(type, false, false);
+			  }
+
+			  node.dispatchEvent(event);
+			}
+
+			function dispatchConstant(type, params) {
+			  return function() {
+				return dispatchEvent(this, type, params);
+			  };
+			}
+
+			function dispatchFunction(type, params) {
+			  return function() {
+				return dispatchEvent(this, type, params.apply(this, arguments));
+			  };
+			}
+
+			var selection_dispatch = function(type, params) {
+			  return this.each((typeof params === "function"
+				  ? dispatchFunction
+				  : dispatchConstant)(type, params));
+			};
+
+			var root = [null];
+
+			function Selection(groups, parents) {
+			  this._groups = groups;
+			  this._parents = parents;
+			}
+
+			function selection() {
+			  return new Selection([[document.documentElement]], root);
+			}
+
+			Selection.prototype = selection.prototype = {
+			  constructor: Selection,
+			  select: selection_select,
+			  selectAll: selection_selectAll,
+			  filter: selection_filter,
+			  data: selection_data,
+			  enter: selection_enter,
+			  exit: selection_exit,
+			  merge: selection_merge,
+			  order: selection_order,
+			  sort: selection_sort,
+			  call: selection_call,
+			  nodes: selection_nodes,
+			  node: selection_node,
+			  size: selection_size,
+			  empty: selection_empty,
+			  each: selection_each,
+			  attr: selection_attr,
+			  style: selection_style,
+			  property: selection_property,
+			  classed: selection_classed,
+			  text: selection_text,
+			  html: selection_html,
+			  raise: selection_raise,
+			  lower: selection_lower,
+			  append: selection_append,
+			  insert: selection_insert,
+			  remove: selection_remove,
+			  datum: selection_datum,
+			  on: selection_on,
+			  dispatch: selection_dispatch
+			};
+
+			var select = function(selector) {
+			  return typeof selector === "string"
+				  ? new Selection([[document.querySelector(selector)]], [document.documentElement])
+				  : new Selection([[selector]], root);
+			};
+
+			var selectAll = function(selector) {
+			  return typeof selector === "string"
+				  ? new Selection([document.querySelectorAll(selector)], [document.documentElement])
+				  : new Selection([selector == null ? [] : selector], root);
+			};
+
+			var touch = function(node, touches, identifier) {
+			  if (arguments.length < 3) identifier = touches, touches = sourceEvent().changedTouches;
+
+			  for (var i = 0, n = touches ? touches.length : 0, touch; i < n; ++i) {
+				if ((touch = touches[i]).identifier === identifier) {
+				  return point$5(node, touch);
+				}
+			  }
+
+			  return null;
+			};
+
+			var touches = function(node, touches) {
+			  if (touches == null) touches = sourceEvent().touches;
+
+			  for (var i = 0, n = touches ? touches.length : 0, points = new Array(n); i < n; ++i) {
+				points[i] = point$5(node, touches[i]);
+			  }
+
+			  return points;
+			};
+
+			var emptyOn = dispatch("start", "end", "interrupt");
+			var emptyTween = [];
+
+			var CREATED = 0;
+			var SCHEDULED = 1;
+			var STARTING = 2;
+			var STARTED = 3;
+			var RUNNING = 4;
+			var ENDING = 5;
+			var ENDED = 6;
+
+			var schedule = function(node, name, id, index, group, timing) {
+			  var schedules = node.__transition;
+			  if (!schedules) node.__transition = {};
+			  else if (id in schedules) return;
+			  create(node, id, {
+				name: name,
+				index: index, // For context during callback.
+				group: group, // For context during callback.
+				on: emptyOn,
+				tween: emptyTween,
+				time: timing.time,
+				delay: timing.delay,
+				duration: timing.duration,
+				ease: timing.ease,
+				timer: null,
+				state: CREATED
+			  });
+			};
+
+			function init(node, id) {
+			  var schedule = node.__transition;
+			  if (!schedule || !(schedule = schedule[id]) || schedule.state > CREATED) throw new Error("too late");
+			  return schedule;
+			}
+
+			function set$3(node, id) {
+			  var schedule = node.__transition;
+			  if (!schedule || !(schedule = schedule[id]) || schedule.state > STARTING) throw new Error("too late");
+			  return schedule;
+			}
+
+			function get$1(node, id) {
+			  var schedule = node.__transition;
+			  if (!schedule || !(schedule = schedule[id])) throw new Error("too late");
+			  return schedule;
+			}
+
+			function create(node, id, self) {
+			  var schedules = node.__transition,
+				  tween;
+
+			  // Initialize the self timer when the transition is created.
+			  // Note the actual delay is not known until the first callback!
+			  schedules[id] = self;
+			  self.timer = timer(schedule, 0, self.time);
+
+			  function schedule(elapsed) {
+				self.state = SCHEDULED;
+				self.timer.restart(start, self.delay, self.time);
+
+				// If the elapsed delay is less than our first sleep, start immediately.
+				if (self.delay <= elapsed) start(elapsed - self.delay);
+			  }
+
+			  function start(elapsed) {
+				var i, j, n, o;
+
+				// If the state is not SCHEDULED, then we previously errored on start.
+				if (self.state !== SCHEDULED) return stop();
+
+				for (i in schedules) {
+				  o = schedules[i];
+				  if (o.name !== self.name) continue;
+
+				  // While this element already has a starting transition during this frame,
+				  // defer starting an interrupting transition until that transition has a
+				  // chance to tick (and possibly end); see d3/d3-transition#54!
+				  if (o.state === STARTED) return timeout$1(start);
+
+				  // Interrupt the active transition, if any.
+				  // Dispatch the interrupt event.
+				  if (o.state === RUNNING) {
+					o.state = ENDED;
+					o.timer.stop();
+					o.on.call("interrupt", node, node.__data__, o.index, o.group);
+					delete schedules[i];
+				  }
+
+				  // Cancel any pre-empted transitions. No interrupt event is dispatched
+				  // because the cancelled transitions never started. Note that this also
+				  // removes this transition from the pending list!
+				  else if (+i < id) {
+					o.state = ENDED;
+					o.timer.stop();
+					delete schedules[i];
+				  }
+				}
+
+				// Defer the first tick to end of the current frame; see d3/d3#1576.
+				// Note the transition may be canceled after start and before the first tick!
+				// Note this must be scheduled before the start event; see d3/d3-transition#16!
+				// Assuming this is successful, subsequent callbacks go straight to tick.
+				timeout$1(function() {
+				  if (self.state === STARTED) {
+					self.state = RUNNING;
+					self.timer.restart(tick, self.delay, self.time);
+					tick(elapsed);
+				  }
+				});
+
+				// Dispatch the start event.
+				// Note this must be done before the tween are initialized.
+				self.state = STARTING;
+				self.on.call("start", node, node.__data__, self.index, self.group);
+				if (self.state !== STARTING) return; // interrupted
+				self.state = STARTED;
+
+				// Initialize the tween, deleting null tween.
+				tween = new Array(n = self.tween.length);
+				for (i = 0, j = -1; i < n; ++i) {
+				  if (o = self.tween[i].value.call(node, node.__data__, self.index, self.group)) {
+					tween[++j] = o;
+				  }
+				}
+				tween.length = j + 1;
+			  }
+
+			  function tick(elapsed) {
+				var t = elapsed < self.duration ? self.ease.call(null, elapsed / self.duration) : (self.timer.restart(stop), self.state = ENDING, 1),
+					i = -1,
+					n = tween.length;
+
+				while (++i < n) {
+				  tween[i].call(null, t);
+				}
+
+				// Dispatch the end event.
+				if (self.state === ENDING) {
+				  self.on.call("end", node, node.__data__, self.index, self.group);
+				  stop();
+				}
+			  }
+
+			  function stop() {
+				self.state = ENDED;
+				self.timer.stop();
+				delete schedules[id];
+				for (var i in schedules) return; // eslint-disable-line no-unused-vars
+				delete node.__transition;
+			  }
+			}
+
+			var interrupt = function(node, name) {
+			  var schedules = node.__transition,
+				  schedule,
+				  active,
+				  empty = true,
+				  i;
+
+			  if (!schedules) return;
+
+			  name = name == null ? null : name + "";
+
+			  for (i in schedules) {
+				if ((schedule = schedules[i]).name !== name) { empty = false; continue; }
+				active = schedule.state > STARTING && schedule.state < ENDING;
+				schedule.state = ENDED;
+				schedule.timer.stop();
+				if (active) schedule.on.call("interrupt", node, node.__data__, schedule.index, schedule.group);
+				delete schedules[i];
+			  }
+
+			  if (empty) delete node.__transition;
+			};
+
+			var selection_interrupt = function(name) {
+			  return this.each(function() {
+				interrupt(this, name);
+			  });
+			};
+
+			function tweenRemove(id, name) {
+			  var tween0, tween1;
+			  return function() {
+				var schedule = set$3(this, id),
+					tween = schedule.tween;
+
+				// If this node shared tween with the previous node,
+				// just assign the updated shared tween and we’re done!
+				// Otherwise, copy-on-write.
+				if (tween !== tween0) {
+				  tween1 = tween0 = tween;
+				  for (var i = 0, n = tween1.length; i < n; ++i) {
+					if (tween1[i].name === name) {
+					  tween1 = tween1.slice();
+					  tween1.splice(i, 1);
+					  break;
+					}
+				  }
+				}
+
+				schedule.tween = tween1;
+			  };
+			}
+
+			function tweenFunction(id, name, value) {
+			  var tween0, tween1;
+			  if (typeof value !== "function") throw new Error;
+			  return function() {
+				var schedule = set$3(this, id),
+					tween = schedule.tween;
+
+				// If this node shared tween with the previous node,
+				// just assign the updated shared tween and we’re done!
+				// Otherwise, copy-on-write.
+				if (tween !== tween0) {
+				  tween1 = (tween0 = tween).slice();
+				  for (var t = {name: name, value: value}, i = 0, n = tween1.length; i < n; ++i) {
+					if (tween1[i].name === name) {
+					  tween1[i] = t;
+					  break;
+					}
+				  }
+				  if (i === n) tween1.push(t);
+				}
+
+				schedule.tween = tween1;
+			  };
+			}
+
+			var transition_tween = function(name, value) {
+			  var id = this._id;
+
+			  name += "";
+
+			  if (arguments.length < 2) {
+				var tween = get$1(this.node(), id).tween;
+				for (var i = 0, n = tween.length, t; i < n; ++i) {
+				  if ((t = tween[i]).name === name) {
+					return t.value;
+				  }
+				}
+				return null;
+			  }
+
+			  return this.each((value == null ? tweenRemove : tweenFunction)(id, name, value));
+			};
+
+			function tweenValue(transition, name, value) {
+			  var id = transition._id;
+
+			  transition.each(function() {
+				var schedule = set$3(this, id);
+				(schedule.value || (schedule.value = {}))[name] = value.apply(this, arguments);
+			  });
+
+			  return function(node) {
+				return get$1(node, id).value[name];
+			  };
+			}
+
+			var interpolate$1 = function(a, b) {
+			  var c;
+			  return (typeof b === "number" ? interpolateNumber
+				  : b instanceof color ? interpolateRgb
+				  : (c = color(b)) ? (b = c, interpolateRgb)
+				  : interpolateString)(a, b);
+			};
+
+			function attrRemove$1(name) {
+			  return function() {
+				this.removeAttribute(name);
+			  };
+			}
+
+			function attrRemoveNS$1(fullname) {
+			  return function() {
+				this.removeAttributeNS(fullname.space, fullname.local);
+			  };
+			}
+
+			function attrConstant$1(name, interpolate$$1, value1) {
+			  var value00,
+				  interpolate0;
+			  return function() {
+				var value0 = this.getAttribute(name);
+				return value0 === value1 ? null
+					: value0 === value00 ? interpolate0
+					: interpolate0 = interpolate$$1(value00 = value0, value1);
+			  };
+			}
+
+			function attrConstantNS$1(fullname, interpolate$$1, value1) {
+			  var value00,
+				  interpolate0;
+			  return function() {
+				var value0 = this.getAttributeNS(fullname.space, fullname.local);
+				return value0 === value1 ? null
+					: value0 === value00 ? interpolate0
+					: interpolate0 = interpolate$$1(value00 = value0, value1);
+			  };
+			}
+
+			function attrFunction$1(name, interpolate$$1, value) {
+			  var value00,
+				  value10,
+				  interpolate0;
+			  return function() {
+				var value0, value1 = value(this);
+				if (value1 == null) return void this.removeAttribute(name);
+				value0 = this.getAttribute(name);
+				return value0 === value1 ? null
+					: value0 === value00 && value1 === value10 ? interpolate0
+					: interpolate0 = interpolate$$1(value00 = value0, value10 = value1);
+			  };
+			}
+
+			function attrFunctionNS$1(fullname, interpolate$$1, value) {
+			  var value00,
+				  value10,
+				  interpolate0;
+			  return function() {
+				var value0, value1 = value(this);
+				if (value1 == null) return void this.removeAttributeNS(fullname.space, fullname.local);
+				value0 = this.getAttributeNS(fullname.space, fullname.local);
+				return value0 === value1 ? null
+					: value0 === value00 && value1 === value10 ? interpolate0
+					: interpolate0 = interpolate$$1(value00 = value0, value10 = value1);
+			  };
+			}
+
+			var transition_attr = function(name, value) {
+			  var fullname = namespace(name), i = fullname === "transform" ? interpolateTransformSvg : interpolate$1;
+			  return this.attrTween(name, typeof value === "function"
+				  ? (fullname.local ? attrFunctionNS$1 : attrFunction$1)(fullname, i, tweenValue(this, "attr." + name, value))
+				  : value == null ? (fullname.local ? attrRemoveNS$1 : attrRemove$1)(fullname)
+				  : (fullname.local ? attrConstantNS$1 : attrConstant$1)(fullname, i, value));
+			};
+
+			function attrTweenNS(fullname, value) {
+			  function tween() {
+				var node = this, i = value.apply(node, arguments);
+				return i && function(t) {
+				  node.setAttributeNS(fullname.space, fullname.local, i(t));
+				};
+			  }
+			  tween._value = value;
+			  return tween;
+			}
+
+			function attrTween(name, value) {
+			  function tween() {
+				var node = this, i = value.apply(node, arguments);
+				return i && function(t) {
+				  node.setAttribute(name, i(t));
+				};
+			  }
+			  tween._value = value;
+			  return tween;
+			}
+
+			var transition_attrTween = function(name, value) {
+			  var key = "attr." + name;
+			  if (arguments.length < 2) return (key = this.tween(key)) && key._value;
+			  if (value == null) return this.tween(key, null);
+			  if (typeof value !== "function") throw new Error;
+			  var fullname = namespace(name);
+			  return this.tween(key, (fullname.local ? attrTweenNS : attrTween)(fullname, value));
+			};
+
+			function delayFunction(id, value) {
+			  return function() {
+				init(this, id).delay = +value.apply(this, arguments);
+			  };
+			}
+
+			function delayConstant(id, value) {
+			  return value = +value, function() {
+				init(this, id).delay = value;
+			  };
+			}
+
+			var transition_delay = function(value) {
+			  var id = this._id;
+
+			  return arguments.length
+				  ? this.each((typeof value === "function"
+					  ? delayFunction
+					  : delayConstant)(id, value))
+				  : get$1(this.node(), id).delay;
+			};
+
+			function durationFunction(id, value) {
+			  return function() {
+				set$3(this, id).duration = +value.apply(this, arguments);
+			  };
+			}
+
+			function durationConstant(id, value) {
+			  return value = +value, function() {
+				set$3(this, id).duration = value;
+			  };
+			}
+
+			var transition_duration = function(value) {
+			  var id = this._id;
+
+			  return arguments.length
+				  ? this.each((typeof value === "function"
+					  ? durationFunction
+					  : durationConstant)(id, value))
+				  : get$1(this.node(), id).duration;
+			};
+
+			function easeConstant(id, value) {
+			  if (typeof value !== "function") throw new Error;
+			  return function() {
+				set$3(this, id).ease = value;
+			  };
+			}
+
+			var transition_ease = function(value) {
+			  var id = this._id;
+
+			  return arguments.length
+				  ? this.each(easeConstant(id, value))
+				  : get$1(this.node(), id).ease;
+			};
+
+			var transition_filter = function(match) {
+			  if (typeof match !== "function") match = matcher$1(match);
+
+			  for (var groups = this._groups, m = groups.length, subgroups = new Array(m), j = 0; j < m; ++j) {
+				for (var group = groups[j], n = group.length, subgroup = subgroups[j] = [], node, i = 0; i < n; ++i) {
+				  if ((node = group[i]) && match.call(node, node.__data__, i, group)) {
+					subgroup.push(node);
+				  }
+				}
+			  }
+
+			  return new Transition(subgroups, this._parents, this._name, this._id);
+			};
+
+			var transition_merge = function(transition) {
+			  if (transition._id !== this._id) throw new Error;
+
+			  for (var groups0 = this._groups, groups1 = transition._groups, m0 = groups0.length, m1 = groups1.length, m = Math.min(m0, m1), merges = new Array(m0), j = 0; j < m; ++j) {
+				for (var group0 = groups0[j], group1 = groups1[j], n = group0.length, merge = merges[j] = new Array(n), node, i = 0; i < n; ++i) {
+				  if (node = group0[i] || group1[i]) {
+					merge[i] = node;
+				  }
+				}
+			  }
+
+			  for (; j < m0; ++j) {
+				merges[j] = groups0[j];
+			  }
+
+			  return new Transition(merges, this._parents, this._name, this._id);
+			};
+
+			function start$1(name) {
+			  return (name + "").trim().split(/^|\s+/).every(function(t) {
+				var i = t.indexOf(".");
+				if (i >= 0) t = t.slice(0, i);
+				return !t || t === "start";
+			  });
+			}
+
+			function onFunction(id, name, listener) {
+			  var on0, on1, sit = start$1(name) ? init : set$3;
+			  return function() {
+				var schedule = sit(this, id),
+					on = schedule.on;
+
+				// If this node shared a dispatch with the previous node,
+				// just assign the updated shared dispatch and we’re done!
+				// Otherwise, copy-on-write.
+				if (on !== on0) (on1 = (on0 = on).copy()).on(name, listener);
+
+				schedule.on = on1;
+			  };
+			}
+
+			var transition_on = function(name, listener) {
+			  var id = this._id;
+
+			  return arguments.length < 2
+				  ? get$1(this.node(), id).on.on(name)
+				  : this.each(onFunction(id, name, listener));
+			};
+
+			function removeFunction(id) {
+			  return function() {
+				var parent = this.parentNode;
+				for (var i in this.__transition) if (+i !== id) return;
+				if (parent) parent.removeChild(this);
+			  };
+			}
+
+			var transition_remove = function() {
+			  return this.on("end.remove", removeFunction(this._id));
+			};
+
+			var transition_select = function(select$$1) {
+			  var name = this._name,
+				  id = this._id;
+
+			  if (typeof select$$1 !== "function") select$$1 = selector(select$$1);
+
+			  for (var groups = this._groups, m = groups.length, subgroups = new Array(m), j = 0; j < m; ++j) {
+				for (var group = groups[j], n = group.length, subgroup = subgroups[j] = new Array(n), node, subnode, i = 0; i < n; ++i) {
+				  if ((node = group[i]) && (subnode = select$$1.call(node, node.__data__, i, group))) {
+					if ("__data__" in node) subnode.__data__ = node.__data__;
+					subgroup[i] = subnode;
+					schedule(subgroup[i], name, id, i, subgroup, get$1(node, id));
+				  }
+				}
+			  }
+
+			  return new Transition(subgroups, this._parents, name, id);
+			};
+
+			var transition_selectAll = function(select$$1) {
+			  var name = this._name,
+				  id = this._id;
+
+			  if (typeof select$$1 !== "function") select$$1 = selectorAll(select$$1);
+
+			  for (var groups = this._groups, m = groups.length, subgroups = [], parents = [], j = 0; j < m; ++j) {
+				for (var group = groups[j], n = group.length, node, i = 0; i < n; ++i) {
+				  if (node = group[i]) {
+					for (var children = select$$1.call(node, node.__data__, i, group), child, inherit = get$1(node, id), k = 0, l = children.length; k < l; ++k) {
+					  if (child = children[k]) {
+						schedule(child, name, id, k, children, inherit);
+					  }
+					}
+					subgroups.push(children);
+					parents.push(node);
+				  }
+				}
+			  }
+
+			  return new Transition(subgroups, parents, name, id);
+			};
+
+			var Selection$1 = selection.prototype.constructor;
+
+			var transition_selection = function() {
+			  return new Selection$1(this._groups, this._parents);
+			};
+
+			function styleRemove$1(name, interpolate$$1) {
+			  var value00,
+				  value10,
+				  interpolate0;
+			  return function() {
+				var style = window(this).getComputedStyle(this, null),
+					value0 = style.getPropertyValue(name),
+					value1 = (this.style.removeProperty(name), style.getPropertyValue(name));
+				return value0 === value1 ? null
+					: value0 === value00 && value1 === value10 ? interpolate0
+					: interpolate0 = interpolate$$1(value00 = value0, value10 = value1);
+			  };
+			}
+
+			function styleRemoveEnd(name) {
+			  return function() {
+				this.style.removeProperty(name);
+			  };
+			}
+
+			function styleConstant$1(name, interpolate$$1, value1) {
+			  var value00,
+				  interpolate0;
+			  return function() {
+				var value0 = window(this).getComputedStyle(this, null).getPropertyValue(name);
+				return value0 === value1 ? null
+					: value0 === value00 ? interpolate0
+					: interpolate0 = interpolate$$1(value00 = value0, value1);
+			  };
+			}
+
+			function styleFunction$1(name, interpolate$$1, value) {
+			  var value00,
+				  value10,
+				  interpolate0;
+			  return function() {
+				var style = window(this).getComputedStyle(this, null),
+					value0 = style.getPropertyValue(name),
+					value1 = value(this);
+				if (value1 == null) value1 = (this.style.removeProperty(name), style.getPropertyValue(name));
+				return value0 === value1 ? null
+					: value0 === value00 && value1 === value10 ? interpolate0
+					: interpolate0 = interpolate$$1(value00 = value0, value10 = value1);
+			  };
+			}
+
+			var transition_style = function(name, value, priority) {
+			  var i = (name += "") === "transform" ? interpolateTransformCss : interpolate$1;
+			  return value == null ? this
+					  .styleTween(name, styleRemove$1(name, i))
+					  .on("end.style." + name, styleRemoveEnd(name))
+				  : this.styleTween(name, typeof value === "function"
+					  ? styleFunction$1(name, i, tweenValue(this, "style." + name, value))
+					  : styleConstant$1(name, i, value), priority);
+			};
+
+			function styleTween(name, value, priority) {
+			  function tween() {
+				var node = this, i = value.apply(node, arguments);
+				return i && function(t) {
+				  node.style.setProperty(name, i(t), priority);
+				};
+			  }
+			  tween._value = value;
+			  return tween;
+			}
+
+			var transition_styleTween = function(name, value, priority) {
+			  var key = "style." + (name += "");
+			  if (arguments.length < 2) return (key = this.tween(key)) && key._value;
+			  if (value == null) return this.tween(key, null);
+			  if (typeof value !== "function") throw new Error;
+			  return this.tween(key, styleTween(name, value, priority == null ? "" : priority));
+			};
+
+			function textConstant$1(value) {
+			  return function() {
+				this.textContent = value;
+			  };
+			}
+
+			function textFunction$1(value) {
+			  return function() {
+				var value1 = value(this);
+				this.textContent = value1 == null ? "" : value1;
+			  };
+			}
+
+			var transition_text = function(value) {
+			  return this.tween("text", typeof value === "function"
+				  ? textFunction$1(tweenValue(this, "text", value))
+				  : textConstant$1(value == null ? "" : value + ""));
+			};
+
+			var transition_transition = function() {
+			  var name = this._name,
+				  id0 = this._id,
+				  id1 = newId();
+
+			  for (var groups = this._groups, m = groups.length, j = 0; j < m; ++j) {
+				for (var group = groups[j], n = group.length, node, i = 0; i < n; ++i) {
+				  if (node = group[i]) {
+					var inherit = get$1(node, id0);
+					schedule(node, name, id1, i, group, {
+					  time: inherit.time + inherit.delay + inherit.duration,
+					  delay: 0,
+					  duration: inherit.duration,
+					  ease: inherit.ease
+					});
+				  }
+				}
+			  }
+
+			  return new Transition(groups, this._parents, name, id1);
+			};
+
+			var id = 0;
+
+			function Transition(groups, parents, name, id) {
+			  this._groups = groups;
+			  this._parents = parents;
+			  this._name = name;
+			  this._id = id;
+			}
+
+			function transition(name) {
+			  return selection().transition(name);
+			}
+
+			function newId() {
+			  return ++id;
+			}
+
+			var selection_prototype = selection.prototype;
+
+			Transition.prototype = transition.prototype = {
+			  constructor: Transition,
+			  select: transition_select,
+			  selectAll: transition_selectAll,
+			  filter: transition_filter,
+			  merge: transition_merge,
+			  selection: transition_selection,
+			  transition: transition_transition,
+			  call: selection_prototype.call,
+			  nodes: selection_prototype.nodes,
+			  node: selection_prototype.node,
+			  size: selection_prototype.size,
+			  empty: selection_prototype.empty,
+			  each: selection_prototype.each,
+			  on: transition_on,
+			  attr: transition_attr,
+			  attrTween: transition_attrTween,
+			  style: transition_style,
+			  styleTween: transition_styleTween,
+			  text: transition_text,
+			  remove: transition_remove,
+			  tween: transition_tween,
+			  delay: transition_delay,
+			  duration: transition_duration,
+			  ease: transition_ease
+			};
+
+			var defaultTiming = {
+			  time: null, // Set on use.
+			  delay: 0,
+			  duration: 250,
+			  ease: cubicInOut
+			};
+
+			function inherit(node, id) {
+			  var timing;
+			  while (!(timing = node.__transition) || !(timing = timing[id])) {
+				if (!(node = node.parentNode)) {
+				  return defaultTiming.time = now(), defaultTiming;
+				}
+			  }
+			  return timing;
+			}
+
+			var selection_transition = function(name) {
+			  var id,
+				  timing;
+
+			  if (name instanceof Transition) {
+				id = name._id, name = name._name;
+			  } else {
+				id = newId(), (timing = defaultTiming).time = now(), name = name == null ? null : name + "";
+			  }
+
+			  for (var groups = this._groups, m = groups.length, j = 0; j < m; ++j) {
+				for (var group = groups[j], n = group.length, node, i = 0; i < n; ++i) {
+				  if (node = group[i]) {
+					schedule(node, name, id, i, group, timing || inherit(node, id));
+				  }
+				}
+			  }
+
+			  return new Transition(groups, this._parents, name, id);
+			};
+
+			selection.prototype.interrupt = selection_interrupt;
+			selection.prototype.transition = selection_transition;
+
+			var root$1 = [null];
+
+			var active = function(node, name) {
+			  var schedules = node.__transition,
+				  schedule,
+				  i;
+
+			  if (schedules) {
+				name = name == null ? null : name + "";
+				for (i in schedules) {
+				  if ((schedule = schedules[i]).state > SCHEDULED && schedule.name === name) {
+					return new Transition([[node]], root$1, name, +i);
+				  }
+				}
+			  }
+
+			  return null;
+			};
+
+			var slice$4 = Array.prototype.slice;
+
+			var identity$5 = function(x) {
+			  return x;
+			};
+
+			var top = 1;
+			var right = 2;
+			var bottom = 3;
+			var left = 4;
+			var epsilon$2 = 1e-6;
+
+			function translateX(scale0, scale1, d) {
+			  var x = scale0(d);
+			  return "translate(" + (isFinite(x) ? x : scale1(d)) + ",0)";
+			}
+
+			function translateY(scale0, scale1, d) {
+			  var y = scale0(d);
+			  return "translate(0," + (isFinite(y) ? y : scale1(d)) + ")";
+			}
+
+			function center(scale) {
+			  var offset = scale.bandwidth() / 2;
+			  if (scale.round()) offset = Math.round(offset);
+			  return function(d) {
+				return scale(d) + offset;
+			  };
+			}
+
+			function entering() {
+			  return !this.__axis;
+			}
+
+			function axis(orient, scale) {
+			  var tickArguments = [],
+				  tickValues = null,
+				  tickFormat = null,
+				  tickSizeInner = 6,
+				  tickSizeOuter = 6,
+				  tickPadding = 3;
+
+			  function axis(context) {
+				var values = tickValues == null ? (scale.ticks ? scale.ticks.apply(scale, tickArguments) : scale.domain()) : tickValues,
+					format = tickFormat == null ? (scale.tickFormat ? scale.tickFormat.apply(scale, tickArguments) : identity$5) : tickFormat,
+					spacing = Math.max(tickSizeInner, 0) + tickPadding,
+					transform = orient === top || orient === bottom ? translateX : translateY,
+					range = scale.range(),
+					range0 = range[0] + 0.5,
+					range1 = range[range.length - 1] + 0.5,
+					position = (scale.bandwidth ? center : identity$5)(scale.copy()),
+					selection = context.selection ? context.selection() : context,
+					path = selection.selectAll(".domain").data([null]),
+					tick = selection.selectAll(".tick").data(values, scale).order(),
+					tickExit = tick.exit(),
+					tickEnter = tick.enter().append("g").attr("class", "tick"),
+					line = tick.select("line"),
+					text = tick.select("text"),
+					k = orient === top || orient === left ? -1 : 1,
+					x, y = orient === left || orient === right ? (x = "x", "y") : (x = "y", "x");
+
+				path = path.merge(path.enter().insert("path", ".tick")
+					.attr("class", "domain")
+					.attr("stroke", "#000"));
+
+				tick = tick.merge(tickEnter);
+
+				line = line.merge(tickEnter.append("line")
+					.attr("stroke", "#000")
+					.attr(x + "2", k * tickSizeInner)
+					.attr(y + "1", 0.5)
+					.attr(y + "2", 0.5));
+
+				text = text.merge(tickEnter.append("text")
+					.attr("fill", "#000")
+					.attr(x, k * spacing)
+					.attr(y, 0.5)
+					.attr("dy", orient === top ? "0em" : orient === bottom ? "0.71em" : "0.32em"));
+
+				if (context !== selection) {
+				  path = path.transition(context);
+				  tick = tick.transition(context);
+				  line = line.transition(context);
+				  text = text.transition(context);
+
+				  tickExit = tickExit.transition(context)
+					  .attr("opacity", epsilon$2)
+					  .attr("transform", function(d) { return transform(position, this.parentNode.__axis || position, d); });
+
+				  tickEnter
+					  .attr("opacity", epsilon$2)
+					  .attr("transform", function(d) { return transform(this.parentNode.__axis || position, position, d); });
+				}
+
+				tickExit.remove();
+
+				path
+					.attr("d", orient === left || orient == right
+						? "M" + k * tickSizeOuter + "," + range0 + "H0.5V" + range1 + "H" + k * tickSizeOuter
+						: "M" + range0 + "," + k * tickSizeOuter + "V0.5H" + range1 + "V" + k * tickSizeOuter);
+
+				tick
+					.attr("opacity", 1)
+					.attr("transform", function(d) { return transform(position, position, d); });
+
+				line
+					.attr(x + "2", k * tickSizeInner);
+
+				text
+					.attr(x, k * spacing)
+					.text(format);
+
+				selection.filter(entering)
+					.attr("fill", "none")
+					.attr("font-size", 10)
+					.attr("font-family", "sans-serif")
+					.attr("text-anchor", orient === right ? "start" : orient === left ? "end" : "middle");
+
+				selection
+					.each(function() { this.__axis = position; });
+			  }
+
+			  axis.scale = function(_) {
+				return arguments.length ? (scale = _, axis) : scale;
+			  };
+
+			  axis.ticks = function() {
+				return tickArguments = slice$4.call(arguments), axis;
+			  };
+
+			  axis.tickArguments = function(_) {
+				return arguments.length ? (tickArguments = _ == null ? [] : slice$4.call(_), axis) : tickArguments.slice();
+			  };
+
+			  axis.tickValues = function(_) {
+				return arguments.length ? (tickValues = _ == null ? null : slice$4.call(_), axis) : tickValues && tickValues.slice();
+			  };
+
+			  axis.tickFormat = function(_) {
+				return arguments.length ? (tickFormat = _, axis) : tickFormat;
+			  };
+
+			  axis.tickSize = function(_) {
+				return arguments.length ? (tickSizeInner = tickSizeOuter = +_, axis) : tickSizeInner;
+			  };
+
+			  axis.tickSizeInner = function(_) {
+				return arguments.length ? (tickSizeInner = +_, axis) : tickSizeInner;
+			  };
+
+			  axis.tickSizeOuter = function(_) {
+				return arguments.length ? (tickSizeOuter = +_, axis) : tickSizeOuter;
+			  };
+
+			  axis.tickPadding = function(_) {
+				return arguments.length ? (tickPadding = +_, axis) : tickPadding;
+			  };
+
+			  return axis;
+			}
+
+			function axisTop(scale) {
+			  return axis(top, scale);
+			}
+
+			function axisRight(scale) {
+			  return axis(right, scale);
+			}
+
+			function axisBottom(scale) {
+			  return axis(bottom, scale);
+			}
+
+			function axisLeft(scale) {
+			  return axis(left, scale);
+			}
+
+			function defaultSeparation(a, b) {
+			  return a.parent === b.parent ? 1 : 2;
+			}
+
+			function meanX(children) {
+			  return children.reduce(meanXReduce, 0) / children.length;
+			}
+
+			function meanXReduce(x, c) {
+			  return x + c.x;
+			}
+
+			function maxY(children) {
+			  return 1 + children.reduce(maxYReduce, 0);
+			}
+
+			function maxYReduce(y, c) {
+			  return Math.max(y, c.y);
+			}
+
+			function leafLeft(node) {
+			  var children;
+			  while (children = node.children) node = children[0];
+			  return node;
+			}
+
+			function leafRight(node) {
+			  var children;
+			  while (children = node.children) node = children[children.length - 1];
+			  return node;
+			}
+
+			var cluster = function() {
+			  var separation = defaultSeparation,
+				  dx = 1,
+				  dy = 1,
+				  nodeSize = false;
+
+			  function cluster(root) {
+				var previousNode,
+					x = 0;
+
+				// First walk, computing the initial x & y values.
+				root.eachAfter(function(node) {
+				  var children = node.children;
+				  if (children) {
+					node.x = meanX(children);
+					node.y = maxY(children);
+				  } else {
+					node.x = previousNode ? x += separation(node, previousNode) : 0;
+					node.y = 0;
+					previousNode = node;
+				  }
+				});
+
+				var left = leafLeft(root),
+					right = leafRight(root),
+					x0 = left.x - separation(left, right) / 2,
+					x1 = right.x + separation(right, left) / 2;
+
+				// Second walk, normalizing x & y to the desired size.
+				return root.eachAfter(nodeSize ? function(node) {
+				  node.x = (node.x - root.x) * dx;
+				  node.y = (root.y - node.y) * dy;
+				} : function(node) {
+				  node.x = (node.x - x0) / (x1 - x0) * dx;
+				  node.y = (1 - (root.y ? node.y / root.y : 1)) * dy;
+				});
+			  }
+
+			  cluster.separation = function(x) {
+				return arguments.length ? (separation = x, cluster) : separation;
+			  };
+
+			  cluster.size = function(x) {
+				return arguments.length ? (nodeSize = false, dx = +x[0], dy = +x[1], cluster) : (nodeSize ? null : [dx, dy]);
+			  };
+
+			  cluster.nodeSize = function(x) {
+				return arguments.length ? (nodeSize = true, dx = +x[0], dy = +x[1], cluster) : (nodeSize ? [dx, dy] : null);
+			  };
+
+			  return cluster;
+			};
+
+			var node_each = function(callback) {
+			  var node = this, current, next = [node], children, i, n;
+			  do {
+				current = next.reverse(), next = [];
+				while (node = current.pop()) {
+				  callback(node), children = node.children;
+				  if (children) for (i = 0, n = children.length; i < n; ++i) {
+					next.push(children[i]);
+				  }
+				}
+			  } while (next.length);
+			  return this;
+			};
+
+			var node_eachBefore = function(callback) {
+			  var node = this, nodes = [node], children, i;
+			  while (node = nodes.pop()) {
+				callback(node), children = node.children;
+				if (children) for (i = children.length - 1; i >= 0; --i) {
+				  nodes.push(children[i]);
+				}
+			  }
+			  return this;
+			};
+
+			var node_eachAfter = function(callback) {
+			  var node = this, nodes = [node], next = [], children, i, n;
+			  while (node = nodes.pop()) {
+				next.push(node), children = node.children;
+				if (children) for (i = 0, n = children.length; i < n; ++i) {
+				  nodes.push(children[i]);
+				}
+			  }
+			  while (node = next.pop()) {
+				callback(node);
+			  }
+			  return this;
+			};
+
+			var node_sum = function(value) {
+			  return this.eachAfter(function(node) {
+				var sum = +value(node.data) || 0,
+					children = node.children,
+					i = children && children.length;
+				while (--i >= 0) sum += children[i].value;
+				node.value = sum;
+			  });
+			};
+
+			var node_sort = function(compare) {
+			  return this.eachBefore(function(node) {
+				if (node.children) {
+				  node.children.sort(compare);
+				}
+			  });
+			};
+
+			var node_path = function(end) {
+			  var start = this,
+				  ancestor = leastCommonAncestor(start, end),
+				  nodes = [start];
+			  while (start !== ancestor) {
+				start = start.parent;
+				nodes.push(start);
+			  }
+			  var k = nodes.length;
+			  while (end !== ancestor) {
+				nodes.splice(k, 0, end);
+				end = end.parent;
+			  }
+			  return nodes;
+			};
+
+			function leastCommonAncestor(a, b) {
+			  if (a === b) return a;
+			  var aNodes = a.ancestors(),
+				  bNodes = b.ancestors(),
+				  c = null;
+			  a = aNodes.pop();
+			  b = bNodes.pop();
+			  while (a === b) {
+				c = a;
+				a = aNodes.pop();
+				b = bNodes.pop();
+			  }
+			  return c;
+			}
+
+			var node_ancestors = function() {
+			  var node = this, nodes = [node];
+			  while (node = node.parent) {
+				nodes.push(node);
+			  }
+			  return nodes;
+			};
+
+			var node_descendants = function() {
+			  var nodes = [];
+			  this.each(function(node) {
+				nodes.push(node);
+			  });
+			  return nodes;
+			};
+
+			var node_leaves = function() {
+			  var leaves = [];
+			  this.eachBefore(function(node) {
+				if (!node.children) {
+				  leaves.push(node);
+				}
+			  });
+			  return leaves;
+			};
+
+			var node_links = function() {
+			  var root = this, links = [];
+			  root.each(function(node) {
+				if (node !== root) { // Don’t include the root’s parent, if any.
+				  links.push({source: node.parent, target: node});
+				}
+			  });
+			  return links;
+			};
+
+			function hierarchy(data, children) {
+			  var root = new Node(data),
+				  valued = +data.value && (root.value = data.value),
+				  node,
+				  nodes = [root],
+				  child,
+				  childs,
+				  i,
+				  n;
+
+			  if (children == null) children = defaultChildren;
+
+			  while (node = nodes.pop()) {
+				if (valued) node.value = +node.data.value;
+				if ((childs = children(node.data)) && (n = childs.length)) {
+				  node.children = new Array(n);
+				  for (i = n - 1; i >= 0; --i) {
+					nodes.push(child = node.children[i] = new Node(childs[i]));
+					child.parent = node;
+					child.depth = node.depth + 1;
+				  }
+				}
+			  }
+
+			  return root.eachBefore(computeHeight);
+			}
+
+			function node_copy() {
+			  return hierarchy(this).eachBefore(copyData);
+			}
+
+			function defaultChildren(d) {
+			  return d.children;
+			}
+
+			function copyData(node) {
+			  node.data = node.data.data;
+			}
+
+			function computeHeight(node) {
+			  var height = 0;
+			  do node.height = height;
+			  while ((node = node.parent) && (node.height < ++height));
+			}
+
+			function Node(data) {
+			  this.data = data;
+			  this.depth =
+			  this.height = 0;
+			  this.parent = null;
+			}
+
+			Node.prototype = hierarchy.prototype = {
+			  constructor: Node,
+			  each: node_each,
+			  eachAfter: node_eachAfter,
+			  eachBefore: node_eachBefore,
+			  sum: node_sum,
+			  sort: node_sort,
+			  path: node_path,
+			  ancestors: node_ancestors,
+			  descendants: node_descendants,
+			  leaves: node_leaves,
+			  links: node_links,
+			  copy: node_copy
+			};
+
+			function Node$2(value) {
+			  this._ = value;
+			  this.next = null;
+			}
+
+			var shuffle$1 = function(array) {
+			  var i,
+				  n = (array = array.slice()).length,
+				  head = null,
+				  node = head;
+
+			  while (n) {
+				var next = new Node$2(array[n - 1]);
+				if (node) node = node.next = next;
+				else node = head = next;
+				array[i] = array[--n];
+			  }
+
+			  return {
+				head: head,
+				tail: node
+			  };
+			};
+
+			var enclose = function(circles) {
+			  return encloseN(shuffle$1(circles), []);
+			};
+
+			function encloses(a, b) {
+			  var dx = b.x - a.x,
+				  dy = b.y - a.y,
+				  dr = a.r - b.r;
+			  return dr * dr + 1e-6 > dx * dx + dy * dy;
+			}
+
+			// Returns the smallest circle that contains circles L and intersects circles B.
+			function encloseN(L, B) {
+			  var circle,
+				  l0 = null,
+				  l1 = L.head,
+				  l2,
+				  p1;
+
+			  switch (B.length) {
+				case 1: circle = enclose1(B[0]); break;
+				case 2: circle = enclose2(B[0], B[1]); break;
+				case 3: circle = enclose3(B[0], B[1], B[2]); break;
+			  }
+
+			  while (l1) {
+				p1 = l1._, l2 = l1.next;
+				if (!circle || !encloses(circle, p1)) {
+
+				  // Temporarily truncate L before l1.
+				  if (l0) L.tail = l0, l0.next = null;
+				  else L.head = L.tail = null;
+
+				  B.push(p1);
+				  circle = encloseN(L, B); // Note: reorders L!
+				  B.pop();
+
+				  // Move l1 to the front of L and reconnect the truncated list L.
+				  if (L.head) l1.next = L.head, L.head = l1;
+				  else l1.next = null, L.head = L.tail = l1;
+				  l0 = L.tail, l0.next = l2;
+
+				} else {
+				  l0 = l1;
+				}
+				l1 = l2;
+			  }
+
+			  L.tail = l0;
+			  return circle;
+			}
+
+			function enclose1(a) {
+			  return {
+				x: a.x,
+				y: a.y,
+				r: a.r
+			  };
+			}
+
+			function enclose2(a, b) {
+			  var x1 = a.x, y1 = a.y, r1 = a.r,
+				  x2 = b.x, y2 = b.y, r2 = b.r,
+				  x21 = x2 - x1, y21 = y2 - y1, r21 = r2 - r1,
+				  l = Math.sqrt(x21 * x21 + y21 * y21);
+			  return {
+				x: (x1 + x2 + x21 / l * r21) / 2,
+				y: (y1 + y2 + y21 / l * r21) / 2,
+				r: (l + r1 + r2) / 2
+			  };
+			}
+
+			function enclose3(a, b, c) {
+			  var x1 = a.x, y1 = a.y, r1 = a.r,
+				  x2 = b.x, y2 = b.y, r2 = b.r,
+				  x3 = c.x, y3 = c.y, r3 = c.r,
+				  a2 = 2 * (x1 - x2),
+				  b2 = 2 * (y1 - y2),
+				  c2 = 2 * (r2 - r1),
+				  d2 = x1 * x1 + y1 * y1 - r1 * r1 - x2 * x2 - y2 * y2 + r2 * r2,
+				  a3 = 2 * (x1 - x3),
+				  b3 = 2 * (y1 - y3),
+				  c3 = 2 * (r3 - r1),
+				  d3 = x1 * x1 + y1 * y1 - r1 * r1 - x3 * x3 - y3 * y3 + r3 * r3,
+				  ab = a3 * b2 - a2 * b3,
+				  xa = (b2 * d3 - b3 * d2) / ab - x1,
+				  xb = (b3 * c2 - b2 * c3) / ab,
+				  ya = (a3 * d2 - a2 * d3) / ab - y1,
+				  yb = (a2 * c3 - a3 * c2) / ab,
+				  A = xb * xb + yb * yb - 1,
+				  B = 2 * (xa * xb + ya * yb + r1),
+				  C = xa * xa + ya * ya - r1 * r1,
+				  r = (-B - Math.sqrt(B * B - 4 * A * C)) / (2 * A);
+			  return {
+				x: xa + xb * r + x1,
+				y: ya + yb * r + y1,
+				r: r
+			  };
+			}
+
+			function place(a, b, c) {
+			  var ax = a.x,
+				  ay = a.y,
+				  da = b.r + c.r,
+				  db = a.r + c.r,
+				  dx = b.x - ax,
+				  dy = b.y - ay,
+				  dc = dx * dx + dy * dy;
+			  if (dc) {
+				var x = 0.5 + ((db *= db) - (da *= da)) / (2 * dc),
+					y = Math.sqrt(Math.max(0, 2 * da * (db + dc) - (db -= dc) * db - da * da)) / (2 * dc);
+				c.x = ax + x * dx + y * dy;
+				c.y = ay + x * dy - y * dx;
+			  } else {
+				c.x = ax + db;
+				c.y = ay;
+			  }
+			}
+
+			function intersects(a, b) {
+			  var dx = b.x - a.x,
+				  dy = b.y - a.y,
+				  dr = a.r + b.r;
+			  return dr * dr > dx * dx + dy * dy;
+			}
+
+			function distance2(circle, x, y) {
+			  var dx = circle.x - x,
+				  dy = circle.y - y;
+			  return dx * dx + dy * dy;
+			}
+
+			function Node$1(circle) {
+			  this._ = circle;
+			  this.next = null;
+			  this.previous = null;
+			}
+
+			function packEnclose(circles) {
+			  if (!(n = circles.length)) return 0;
+
+			  var a, b, c, n;
+
+			  // Place the first circle.
+			  a = circles[0], a.x = 0, a.y = 0;
+			  if (!(n > 1)) return a.r;
+
+			  // Place the second circle.
+			  b = circles[1], a.x = -b.r, b.x = a.r, b.y = 0;
+			  if (!(n > 2)) return a.r + b.r;
+
+			  // Place the third circle.
+			  place(b, a, c = circles[2]);
+
+			  // Initialize the weighted centroid.
+			  var aa = a.r * a.r,
+				  ba = b.r * b.r,
+				  ca = c.r * c.r,
+				  oa = aa + ba + ca,
+				  ox = aa * a.x + ba * b.x + ca * c.x,
+				  oy = aa * a.y + ba * b.y + ca * c.y,
+				  cx, cy, i, j, k, sj, sk;
+
+			  // Initialize the front-chain using the first three circles a, b and c.
+			  a = new Node$1(a), b = new Node$1(b), c = new Node$1(c);
+			  a.next = c.previous = b;
+			  b.next = a.previous = c;
+			  c.next = b.previous = a;
+
+			  // Attempt to place each remaining circle…
+			  pack: for (i = 3; i < n; ++i) {
+				place(a._, b._, c = circles[i]), c = new Node$1(c);
+
+				// If there are only three elements in the front-chain…
+				if ((k = a.previous) === (j = b.next)) {
+				  // If the new circle intersects the third circle,
+				  // rotate the front chain to try the next position.
+				  if (intersects(j._, c._)) {
+					a = b, b = j, --i;
+					continue pack;
+				  }
+				}
+
+				// Find the closest intersecting circle on the front-chain, if any.
+				else {
+				  sj = j._.r, sk = k._.r;
+				  do {
+					if (sj <= sk) {
+					  if (intersects(j._, c._)) {
+						b = j, a.next = b, b.previous = a, --i;
+						continue pack;
+					  }
+					  j = j.next, sj += j._.r;
+					} else {
+					  if (intersects(k._, c._)) {
+						a = k, a.next = b, b.previous = a, --i;
+						continue pack;
+					  }
+					  k = k.previous, sk += k._.r;
+					}
+				  } while (j !== k.next);
+				}
+
+				// Success! Insert the new circle c between a and b.
+				c.previous = a, c.next = b, a.next = b.previous = b = c;
+
+				// Update the weighted centroid.
+				oa += ca = c._.r * c._.r;
+				ox += ca * c._.x;
+				oy += ca * c._.y;
+
+				// Compute the new closest circle a to centroid.
+				aa = distance2(a._, cx = ox / oa, cy = oy / oa);
+				while ((c = c.next) !== b) {
+				  if ((ca = distance2(c._, cx, cy)) < aa) {
+					a = c, aa = ca;
+				  }
+				}
+				b = a.next;
+			  }
+
+			  // Compute the enclosing circle of the front chain.
+			  a = [b._], c = b; while ((c = c.next) !== b) a.push(c._); c = enclose(a);
+
+			  // Translate the circles to put the enclosing circle around the origin.
+			  for (i = 0; i < n; ++i) a = circles[i], a.x -= c.x, a.y -= c.y;
+
+			  return c.r;
+			}
+
+			var siblings = function(circles) {
+			  packEnclose(circles);
+			  return circles;
+			};
+
+			function optional(f) {
+			  return f == null ? null : required(f);
+			}
+
+			function required(f) {
+			  if (typeof f !== "function") throw new Error;
+			  return f;
+			}
+
+			function constantZero() {
+			  return 0;
+			}
+
+			var constant$6 = function(x) {
+			  return function() {
+				return x;
+			  };
+			};
+
+			function defaultRadius(d) {
+			  return Math.sqrt(d.value);
+			}
+
+			var index = function() {
+			  var radius = null,
+				  dx = 1,
+				  dy = 1,
+				  padding = constantZero;
+
+			  function pack(root) {
+				root.x = dx / 2, root.y = dy / 2;
+				if (radius) {
+				  root.eachBefore(radiusLeaf(radius))
+					  .eachAfter(packChildren(padding, 0.5))
+					  .eachBefore(translateChild(1));
+				} else {
+				  root.eachBefore(radiusLeaf(defaultRadius))
+					  .eachAfter(packChildren(constantZero, 1))
+					  .eachAfter(packChildren(padding, root.r / Math.min(dx, dy)))
+					  .eachBefore(translateChild(Math.min(dx, dy) / (2 * root.r)));
+				}
+				return root;
+			  }
+
+			  pack.radius = function(x) {
+				return arguments.length ? (radius = optional(x), pack) : radius;
+			  };
+
+			  pack.size = function(x) {
+				return arguments.length ? (dx = +x[0], dy = +x[1], pack) : [dx, dy];
+			  };
+
+			  pack.padding = function(x) {
+				return arguments.length ? (padding = typeof x === "function" ? x : constant$6(+x), pack) : padding;
+			  };
+
+			  return pack;
+			};
+
+			function radiusLeaf(radius) {
+			  return function(node) {
+				if (!node.children) {
+				  node.r = Math.max(0, +radius(node) || 0);
+				}
+			  };
+			}
+
+			function packChildren(padding, k) {
+			  return function(node) {
+				if (children = node.children) {
+				  var children,
+					  i,
+					  n = children.length,
+					  r = padding(node) * k || 0,
+					  e;
+
+				  if (r) for (i = 0; i < n; ++i) children[i].r += r;
+				  e = packEnclose(children);
+				  if (r) for (i = 0; i < n; ++i) children[i].r -= r;
+				  node.r = e + r;
+				}
+			  };
+			}
+
+			function translateChild(k) {
+			  return function(node) {
+				var parent = node.parent;
+				node.r *= k;
+				if (parent) {
+				  node.x = parent.x + k * node.x;
+				  node.y = parent.y + k * node.y;
+				}
+			  };
+			}
+
+			var roundNode = function(node) {
+			  node.x0 = Math.round(node.x0);
+			  node.y0 = Math.round(node.y0);
+			  node.x1 = Math.round(node.x1);
+			  node.y1 = Math.round(node.y1);
+			};
+
+			var treemapDice = function(parent, x0, y0, x1, y1) {
+			  var nodes = parent.children,
+				  node,
+				  i = -1,
+				  n = nodes.length,
+				  k = parent.value && (x1 - x0) / parent.value;
+
+			  while (++i < n) {
+				node = nodes[i], node.y0 = y0, node.y1 = y1;
+				node.x0 = x0, node.x1 = x0 += node.value * k;
+			  }
+			};
+
+			var partition = function() {
+			  var dx = 1,
+				  dy = 1,
+				  padding = 0,
+				  round = false;
+
+			  function partition(root) {
+				var n = root.height + 1;
+				root.x0 =
+				root.y0 = padding;
+				root.x1 = dx;
+				root.y1 = dy / n;
+				root.eachBefore(positionNode(dy, n));
+				if (round) root.eachBefore(roundNode);
+				return root;
+			  }
+
+			  function positionNode(dy, n) {
+				return function(node) {
+				  if (node.children) {
+					treemapDice(node, node.x0, dy * (node.depth + 1) / n, node.x1, dy * (node.depth + 2) / n);
+				  }
+				  var x0 = node.x0,
+					  y0 = node.y0,
+					  x1 = node.x1 - padding,
+					  y1 = node.y1 - padding;
+				  if (x1 < x0) x0 = x1 = (x0 + x1) / 2;
+				  if (y1 < y0) y0 = y1 = (y0 + y1) / 2;
+				  node.x0 = x0;
+				  node.y0 = y0;
+				  node.x1 = x1;
+				  node.y1 = y1;
+				};
+			  }
+
+			  partition.round = function(x) {
+				return arguments.length ? (round = !!x, partition) : round;
+			  };
+
+			  partition.size = function(x) {
+				return arguments.length ? (dx = +x[0], dy = +x[1], partition) : [dx, dy];
+			  };
+
+			  partition.padding = function(x) {
+				return arguments.length ? (padding = +x, partition) : padding;
+			  };
+
+			  return partition;
+			};
+
+			var keyPrefix$1 = "$";
+			var preroot = {depth: -1};
+			var ambiguous = {};
+
+			function defaultId(d) {
+			  return d.id;
+			}
+
+			function defaultParentId(d) {
+			  return d.parentId;
+			}
+
+			var stratify = function() {
+			  var id = defaultId,
+				  parentId = defaultParentId;
+
+			  function stratify(data) {
+				var d,
+					i,
+					n = data.length,
+					root,
+					parent,
+					node,
+					nodes = new Array(n),
+					nodeId,
+					nodeKey,
+					nodeByKey = {};
+
+				for (i = 0; i < n; ++i) {
+				  d = data[i], node = nodes[i] = new Node(d);
+				  if ((nodeId = id(d, i, data)) != null && (nodeId += "")) {
+					nodeKey = keyPrefix$1 + (node.id = nodeId);
+					nodeByKey[nodeKey] = nodeKey in nodeByKey ? ambiguous : node;
+				  }
+				}
+
+				for (i = 0; i < n; ++i) {
+				  node = nodes[i], nodeId = parentId(data[i], i, data);
+				  if (nodeId == null || !(nodeId += "")) {
+					if (root) throw new Error("multiple roots");
+					root = node;
+				  } else {
+					parent = nodeByKey[keyPrefix$1 + nodeId];
+					if (!parent) throw new Error("missing: " + nodeId);
+					if (parent === ambiguous) throw new Error("ambiguous: " + nodeId);
+					if (parent.children) parent.children.push(node);
+					else parent.children = [node];
+					node.parent = parent;
+				  }
+				}
+
+				if (!root) throw new Error("no root");
+				root.parent = preroot;
+				root.eachBefore(function(node) { node.depth = node.parent.depth + 1; --n; }).eachBefore(computeHeight);
+				root.parent = null;
+				if (n > 0) throw new Error("cycle");
+
+				return root;
+			  }
+
+			  stratify.id = function(x) {
+				return arguments.length ? (id = required(x), stratify) : id;
+			  };
+
+			  stratify.parentId = function(x) {
+				return arguments.length ? (parentId = required(x), stratify) : parentId;
+			  };
+
+			  return stratify;
+			};
+
+			function defaultSeparation$1(a, b) {
+			  return a.parent === b.parent ? 1 : 2;
+			}
+
+			// function radialSeparation(a, b) {
+			//   return (a.parent === b.parent ? 1 : 2) / a.depth;
+			// }
+
+			// This function is used to traverse the left contour of a subtree (or
+			// subforest). It returns the successor of v on this contour. This successor is
+			// either given by the leftmost child of v or by the thread of v. The function
+			// returns null if and only if v is on the highest level of its subtree.
+			function nextLeft(v) {
+			  var children = v.children;
+			  return children ? children[0] : v.t;
+			}
+
+			// This function works analogously to nextLeft.
+			function nextRight(v) {
+			  var children = v.children;
+			  return children ? children[children.length - 1] : v.t;
+			}
+
+			// Shifts the current subtree rooted at w+. This is done by increasing
+			// prelim(w+) and mod(w+) by shift.
+			function moveSubtree(wm, wp, shift) {
+			  var change = shift / (wp.i - wm.i);
+			  wp.c -= change;
+			  wp.s += shift;
+			  wm.c += change;
+			  wp.z += shift;
+			  wp.m += shift;
+			}
+
+			// All other shifts, applied to the smaller subtrees between w- and w+, are
+			// performed by this function. To prepare the shifts, we have to adjust
+			// change(w+), shift(w+), and change(w-).
+			function executeShifts(v) {
+			  var shift = 0,
+				  change = 0,
+				  children = v.children,
+				  i = children.length,
+				  w;
+			  while (--i >= 0) {
+				w = children[i];
+				w.z += shift;
+				w.m += shift;
+				shift += w.s + (change += w.c);
+			  }
+			}
+
+			// If vi-’s ancestor is a sibling of v, returns vi-’s ancestor. Otherwise,
+			// returns the specified (default) ancestor.
+			function nextAncestor(vim, v, ancestor) {
+			  return vim.a.parent === v.parent ? vim.a : ancestor;
+			}
+
+			function TreeNode(node, i) {
+			  this._ = node;
+			  this.parent = null;
+			  this.children = null;
+			  this.A = null; // default ancestor
+			  this.a = this; // ancestor
+			  this.z = 0; // prelim
+			  this.m = 0; // mod
+			  this.c = 0; // change
+			  this.s = 0; // shift
+			  this.t = null; // thread
+			  this.i = i; // number
+			}
+
+			TreeNode.prototype = Object.create(Node.prototype);
+
+			function treeRoot(root) {
+			  var tree = new TreeNode(root, 0),
+				  node,
+				  nodes = [tree],
+				  child,
+				  children,
+				  i,
+				  n;
+
+			  while (node = nodes.pop()) {
+				if (children = node._.children) {
+				  node.children = new Array(n = children.length);
+				  for (i = n - 1; i >= 0; --i) {
+					nodes.push(child = node.children[i] = new TreeNode(children[i], i));
+					child.parent = node;
+				  }
+				}
+			  }
+
+			  (tree.parent = new TreeNode(null, 0)).children = [tree];
+			  return tree;
+			}
+
+			// Node-link tree diagram using the Reingold-Tilford "tidy" algorithm
+			var tree = function() {
+			  var separation = defaultSeparation$1,
+				  dx = 1,
+				  dy = 1,
+				  nodeSize = null;
+
+			  function tree(root) {
+				var t = treeRoot(root);
+
+				// Compute the layout using Buchheim et al.’s algorithm.
+				t.eachAfter(firstWalk), t.parent.m = -t.z;
+				t.eachBefore(secondWalk);
+
+				// If a fixed node size is specified, scale x and y.
+				if (nodeSize) root.eachBefore(sizeNode);
+
+				// If a fixed tree size is specified, scale x and y based on the extent.
+				// Compute the left-most, right-most, and depth-most nodes for extents.
+				else {
+				  var left = root,
+					  right = root,
+					  bottom = root;
+				  root.eachBefore(function(node) {
+					if (node.x < left.x) left = node;
+					if (node.x > right.x) right = node;
+					if (node.depth > bottom.depth) bottom = node;
+				  });
+				  var s = left === right ? 1 : separation(left, right) / 2,
+					  tx = s - left.x,
+					  kx = dx / (right.x + s + tx),
+					  ky = dy / (bottom.depth || 1);
+				  root.eachBefore(function(node) {
+					node.x = (node.x + tx) * kx;
+					node.y = node.depth * ky;
+				  });
+				}
+
+				return root;
+			  }
+
+			  // Computes a preliminary x-coordinate for v. Before that, FIRST WALK is
+			  // applied recursively to the children of v, as well as the function
+			  // APPORTION. After spacing out the children by calling EXECUTE SHIFTS, the
+			  // node v is placed to the midpoint of its outermost children.
+			  function firstWalk(v) {
+				var children = v.children,
+					siblings = v.parent.children,
+					w = v.i ? siblings[v.i - 1] : null;
+				if (children) {
+				  executeShifts(v);
+				  var midpoint = (children[0].z + children[children.length - 1].z) / 2;
+				  if (w) {
+					v.z = w.z + separation(v._, w._);
+					v.m = v.z - midpoint;
+				  } else {
+					v.z = midpoint;
+				  }
+				} else if (w) {
+				  v.z = w.z + separation(v._, w._);
+				}
+				v.parent.A = apportion(v, w, v.parent.A || siblings[0]);
+			  }
+
+			  // Computes all real x-coordinates by summing up the modifiers recursively.
+			  function secondWalk(v) {
+				v._.x = v.z + v.parent.m;
+				v.m += v.parent.m;
+			  }
+
+			  // The core of the algorithm. Here, a new subtree is combined with the
+			  // previous subtrees. Threads are used to traverse the inside and outside
+			  // contours of the left and right subtree up to the highest common level. The
+			  // vertices used for the traversals are vi+, vi-, vo-, and vo+, where the
+			  // superscript o means outside and i means inside, the subscript - means left
+			  // subtree and + means right subtree. For summing up the modifiers along the
+			  // contour, we use respective variables si+, si-, so-, and so+. Whenever two
+			  // nodes of the inside contours conflict, we compute the left one of the
+			  // greatest uncommon ancestors using the function ANCESTOR and call MOVE
+			  // SUBTREE to shift the subtree and prepare the shifts of smaller subtrees.
+			  // Finally, we add a new thread (if necessary).
+			  function apportion(v, w, ancestor) {
+				if (w) {
+				  var vip = v,
+					  vop = v,
+					  vim = w,
+					  vom = vip.parent.children[0],
+					  sip = vip.m,
+					  sop = vop.m,
+					  sim = vim.m,
+					  som = vom.m,
+					  shift;
+				  while (vim = nextRight(vim), vip = nextLeft(vip), vim && vip) {
+					vom = nextLeft(vom);
+					vop = nextRight(vop);
+					vop.a = v;
+					shift = vim.z + sim - vip.z - sip + separation(vim._, vip._);
+					if (shift > 0) {
+					  moveSubtree(nextAncestor(vim, v, ancestor), v, shift);
+					  sip += shift;
+					  sop += shift;
+					}
+					sim += vim.m;
+					sip += vip.m;
+					som += vom.m;
+					sop += vop.m;
+				  }
+				  if (vim && !nextRight(vop)) {
+					vop.t = vim;
+					vop.m += sim - sop;
+				  }
+				  if (vip && !nextLeft(vom)) {
+					vom.t = vip;
+					vom.m += sip - som;
+					ancestor = v;
+				  }
+				}
+				return ancestor;
+			  }
+
+			  function sizeNode(node) {
+				node.x *= dx;
+				node.y = node.depth * dy;
+			  }
+
+			  tree.separation = function(x) {
+				return arguments.length ? (separation = x, tree) : separation;
+			  };
+
+			  tree.size = function(x) {
+				return arguments.length ? (nodeSize = false, dx = +x[0], dy = +x[1], tree) : (nodeSize ? null : [dx, dy]);
+			  };
+
+			  tree.nodeSize = function(x) {
+				return arguments.length ? (nodeSize = true, dx = +x[0], dy = +x[1], tree) : (nodeSize ? [dx, dy] : null);
+			  };
+
+			  return tree;
+			};
+
+			var treemapSlice = function(parent, x0, y0, x1, y1) {
+			  var nodes = parent.children,
+				  node,
+				  i = -1,
+				  n = nodes.length,
+				  k = parent.value && (y1 - y0) / parent.value;
+
+			  while (++i < n) {
+				node = nodes[i], node.x0 = x0, node.x1 = x1;
+				node.y0 = y0, node.y1 = y0 += node.value * k;
+			  }
+			};
+
+			var phi = (1 + Math.sqrt(5)) / 2;
+
+			function squarifyRatio(ratio, parent, x0, y0, x1, y1) {
+			  var rows = [],
+				  nodes = parent.children,
+				  row,
+				  nodeValue,
+				  i0 = 0,
+				  i1,
+				  n = nodes.length,
+				  dx, dy,
+				  value = parent.value,
+				  sumValue,
+				  minValue,
+				  maxValue,
+				  newRatio,
+				  minRatio,
+				  alpha,
+				  beta;
+
+			  while (i0 < n) {
+				dx = x1 - x0, dy = y1 - y0;
+				minValue = maxValue = sumValue = nodes[i0].value;
+				alpha = Math.max(dy / dx, dx / dy) / (value * ratio);
+				beta = sumValue * sumValue * alpha;
+				minRatio = Math.max(maxValue / beta, beta / minValue);
+
+				// Keep adding nodes while the aspect ratio maintains or improves.
+				for (i1 = i0 + 1; i1 < n; ++i1) {
+				  sumValue += nodeValue = nodes[i1].value;
+				  if (nodeValue < minValue) minValue = nodeValue;
+				  if (nodeValue > maxValue) maxValue = nodeValue;
+				  beta = sumValue * sumValue * alpha;
+				  newRatio = Math.max(maxValue / beta, beta / minValue);
+				  if (newRatio > minRatio) { sumValue -= nodeValue; break; }
+				  minRatio = newRatio;
+				}
+
+				// Position and record the row orientation.
+				rows.push(row = {value: sumValue, dice: dx < dy, children: nodes.slice(i0, i1)});
+				if (row.dice) treemapDice(row, x0, y0, x1, value ? y0 += dy * sumValue / value : y1);
+				else treemapSlice(row, x0, y0, value ? x0 += dx * sumValue / value : x1, y1);
+				value -= sumValue, i0 = i1;
+			  }
+
+			  return rows;
+			}
+
+			var squarify = (function custom(ratio) {
+
+			  function squarify(parent, x0, y0, x1, y1) {
+				squarifyRatio(ratio, parent, x0, y0, x1, y1);
+			  }
+
+			  squarify.ratio = function(x) {
+				return custom((x = +x) > 1 ? x : 1);
+			  };
+
+			  return squarify;
+			})(phi);
+
+			var index$1 = function() {
+			  var tile = squarify,
+				  round = false,
+				  dx = 1,
+				  dy = 1,
+				  paddingStack = [0],
+				  paddingInner = constantZero,
+				  paddingTop = constantZero,
+				  paddingRight = constantZero,
+				  paddingBottom = constantZero,
+				  paddingLeft = constantZero;
+
+			  function treemap(root) {
+				root.x0 =
+				root.y0 = 0;
+				root.x1 = dx;
+				root.y1 = dy;
+				root.eachBefore(positionNode);
+				paddingStack = [0];
+				if (round) root.eachBefore(roundNode);
+				return root;
+			  }
+
+			  function positionNode(node) {
+				var p = paddingStack[node.depth],
+					x0 = node.x0 + p,
+					y0 = node.y0 + p,
+					x1 = node.x1 - p,
+					y1 = node.y1 - p;
+				if (x1 < x0) x0 = x1 = (x0 + x1) / 2;
+				if (y1 < y0) y0 = y1 = (y0 + y1) / 2;
+				node.x0 = x0;
+				node.y0 = y0;
+				node.x1 = x1;
+				node.y1 = y1;
+				if (node.children) {
+				  p = paddingStack[node.depth + 1] = paddingInner(node) / 2;
+				  x0 += paddingLeft(node) - p;
+				  y0 += paddingTop(node) - p;
+				  x1 -= paddingRight(node) - p;
+				  y1 -= paddingBottom(node) - p;
+				  if (x1 < x0) x0 = x1 = (x0 + x1) / 2;
+				  if (y1 < y0) y0 = y1 = (y0 + y1) / 2;
+				  tile(node, x0, y0, x1, y1);
+				}
+			  }
+
+			  treemap.round = function(x) {
+				return arguments.length ? (round = !!x, treemap) : round;
+			  };
+
+			  treemap.size = function(x) {
+				return arguments.length ? (dx = +x[0], dy = +x[1], treemap) : [dx, dy];
+			  };
+
+			  treemap.tile = function(x) {
+				return arguments.length ? (tile = required(x), treemap) : tile;
+			  };
+
+			  treemap.padding = function(x) {
+				return arguments.length ? treemap.paddingInner(x).paddingOuter(x) : treemap.paddingInner();
+			  };
+
+			  treemap.paddingInner = function(x) {
+				return arguments.length ? (paddingInner = typeof x === "function" ? x : constant$6(+x), treemap) : paddingInner;
+			  };
+
+			  treemap.paddingOuter = function(x) {
+				return arguments.length ? treemap.paddingTop(x).paddingRight(x).paddingBottom(x).paddingLeft(x) : treemap.paddingTop();
+			  };
+
+			  treemap.paddingTop = function(x) {
+				return arguments.length ? (paddingTop = typeof x === "function" ? x : constant$6(+x), treemap) : paddingTop;
+			  };
+
+			  treemap.paddingRight = function(x) {
+				return arguments.length ? (paddingRight = typeof x === "function" ? x : constant$6(+x), treemap) : paddingRight;
+			  };
+
+			  treemap.paddingBottom = function(x) {
+				return arguments.length ? (paddingBottom = typeof x === "function" ? x : constant$6(+x), treemap) : paddingBottom;
+			  };
+
+			  treemap.paddingLeft = function(x) {
+				return arguments.length ? (paddingLeft = typeof x === "function" ? x : constant$6(+x), treemap) : paddingLeft;
+			  };
+
+			  return treemap;
+			};
+
+			var binary = function(parent, x0, y0, x1, y1) {
+			  var nodes = parent.children,
+				  i, n = nodes.length,
+				  sum, sums = new Array(n + 1);
+
+			  for (sums[0] = sum = i = 0; i < n; ++i) {
+				sums[i + 1] = sum += nodes[i].value;
+			  }
+
+			  partition(0, n, parent.value, x0, y0, x1, y1);
+
+			  function partition(i, j, value, x0, y0, x1, y1) {
+				if (i >= j - 1) {
+				  var node = nodes[i];
+				  node.x0 = x0, node.y0 = y0;
+				  node.x1 = x1, node.y1 = y1;
+				  return;
+				}
+
+				var valueOffset = sums[i],
+					valueTarget = (value / 2) + valueOffset,
+					k = i + 1,
+					hi = j - 1;
+
+				while (k < hi) {
+				  var mid = k + hi >>> 1;
+				  if (sums[mid] < valueTarget) k = mid + 1;
+				  else hi = mid;
+				}
+
+				var valueLeft = sums[k] - valueOffset,
+					valueRight = value - valueLeft;
+
+				if ((y1 - y0) > (x1 - x0)) {
+				  var yk = (y0 * valueRight + y1 * valueLeft) / value;
+				  partition(i, k, valueLeft, x0, y0, x1, yk);
+				  partition(k, j, valueRight, x0, yk, x1, y1);
+				} else {
+				  var xk = (x0 * valueRight + x1 * valueLeft) / value;
+				  partition(i, k, valueLeft, x0, y0, xk, y1);
+				  partition(k, j, valueRight, xk, y0, x1, y1);
+				}
+			  }
+			};
+
+			var sliceDice = function(parent, x0, y0, x1, y1) {
+			  (parent.depth & 1 ? treemapSlice : treemapDice)(parent, x0, y0, x1, y1);
+			};
+
+			var resquarify = (function custom(ratio) {
+
+			  function resquarify(parent, x0, y0, x1, y1) {
+				if ((rows = parent._squarify) && (rows.ratio === ratio)) {
+				  var rows,
+					  row,
+					  nodes,
+					  i,
+					  j = -1,
+					  n,
+					  m = rows.length,
+					  value = parent.value;
+
+				  while (++j < m) {
+					row = rows[j], nodes = row.children;
+					for (i = row.value = 0, n = nodes.length; i < n; ++i) row.value += nodes[i].value;
+					if (row.dice) treemapDice(row, x0, y0, x1, y0 += (y1 - y0) * row.value / value);
+					else treemapSlice(row, x0, y0, x0 += (x1 - x0) * row.value / value, y1);
+					value -= row.value;
+				  }
+				} else {
+				  parent._squarify = rows = squarifyRatio(ratio, parent, x0, y0, x1, y1);
+				  rows.ratio = ratio;
+				}
+			  }
+
+			  resquarify.ratio = function(x) {
+				return custom((x = +x) > 1 ? x : 1);
+			  };
+
+			  return resquarify;
+			})(phi);
+
+			var center$1 = function(x, y) {
+			  var nodes;
+
+			  if (x == null) x = 0;
+			  if (y == null) y = 0;
+
+			  function force() {
+				var i,
+					n = nodes.length,
+					node,
+					sx = 0,
+					sy = 0;
+
+				for (i = 0; i < n; ++i) {
+				  node = nodes[i], sx += node.x, sy += node.y;
+				}
+
+				for (sx = sx / n - x, sy = sy / n - y, i = 0; i < n; ++i) {
+				  node = nodes[i], node.x -= sx, node.y -= sy;
+				}
+			  }
+
+			  force.initialize = function(_) {
+				nodes = _;
+			  };
+
+			  force.x = function(_) {
+				return arguments.length ? (x = +_, force) : x;
+			  };
+
+			  force.y = function(_) {
+				return arguments.length ? (y = +_, force) : y;
+			  };
+
+			  return force;
+			};
+
+			var constant$7 = function(x) {
+			  return function() {
+				return x;
+			  };
+			};
+
+			var jiggle = function() {
+			  return (Math.random() - 0.5) * 1e-6;
+			};
+
+			function x$1(d) {
+			  return d.x + d.vx;
+			}
+
+			function y$1(d) {
+			  return d.y + d.vy;
+			}
+
+			var collide = function(radius) {
+			  var nodes,
+				  radii,
+				  strength = 1,
+				  iterations = 1;
+
+			  if (typeof radius !== "function") radius = constant$7(radius == null ? 1 : +radius);
+
+			  function force() {
+				var i, n = nodes.length,
+					tree,
+					node,
+					xi,
+					yi,
+					ri,
+					ri2;
+
+				for (var k = 0; k < iterations; ++k) {
+				  tree = quadtree(nodes, x$1, y$1).visitAfter(prepare);
+				  for (i = 0; i < n; ++i) {
+					node = nodes[i];
+					ri = radii[i], ri2 = ri * ri;
+					xi = node.x + node.vx;
+					yi = node.y + node.vy;
+					tree.visit(apply);
+				  }
+				}
+
+				function apply(quad, x0, y0, x1, y1) {
+				  var data = quad.data, rj = quad.r, r = ri + rj;
+				  if (data) {
+					if (data.index > i) {
+					  var x = xi - data.x - data.vx,
+						  y = yi - data.y - data.vy,
+						  l = x * x + y * y;
+					  if (l < r * r) {
+						if (x === 0) x = jiggle(), l += x * x;
+						if (y === 0) y = jiggle(), l += y * y;
+						l = (r - (l = Math.sqrt(l))) / l * strength;
+						node.vx += (x *= l) * (r = (rj *= rj) / (ri2 + rj));
+						node.vy += (y *= l) * r;
+						data.vx -= x * (r = 1 - r);
+						data.vy -= y * r;
+					  }
+					}
+					return;
+				  }
+				  return x0 > xi + r || x1 < xi - r || y0 > yi + r || y1 < yi - r;
+				}
+			  }
+
+			  function prepare(quad) {
+				if (quad.data) return quad.r = radii[quad.data.index];
+				for (var i = quad.r = 0; i < 4; ++i) {
+				  if (quad[i] && quad[i].r > quad.r) {
+					quad.r = quad[i].r;
+				  }
+				}
+			  }
+
+			  function initialize() {
+				if (!nodes) return;
+				var i, n = nodes.length;
+				radii = new Array(n);
+				for (i = 0; i < n; ++i) radii[i] = +radius(nodes[i], i, nodes);
+			  }
+
+			  force.initialize = function(_) {
+				nodes = _;
+				initialize();
+			  };
+
+			  force.iterations = function(_) {
+				return arguments.length ? (iterations = +_, force) : iterations;
+			  };
+
+			  force.strength = function(_) {
+				return arguments.length ? (strength = +_, force) : strength;
+			  };
+
+			  force.radius = function(_) {
+				return arguments.length ? (radius = typeof _ === "function" ? _ : constant$7(+_), initialize(), force) : radius;
+			  };
+
+			  return force;
+			};
+
+			function index$2(d, i) {
+			  return i;
+			}
+
+			function find(nodeById, nodeId) {
+			  var node = nodeById.get(nodeId);
+			  if (!node) throw new Error("missing: " + nodeId);
+			  return node;
+			}
+
+			var link = function(links) {
+			  var id = index$2,
+				  strength = defaultStrength,
+				  strengths,
+				  distance = constant$7(30),
+				  distances,
+				  nodes,
+				  count,
+				  bias,
+				  iterations = 1;
+
+			  if (links == null) links = [];
+
+			  function defaultStrength(link) {
+				return 1 / Math.min(count[link.source.index], count[link.target.index]);
+			  }
+
+			  function force(alpha) {
+				for (var k = 0, n = links.length; k < iterations; ++k) {
+				  for (var i = 0, link, source, target, x, y, l, b; i < n; ++i) {
+					link = links[i], source = link.source, target = link.target;
+					x = target.x + target.vx - source.x - source.vx || jiggle();
+					y = target.y + target.vy - source.y - source.vy || jiggle();
+					l = Math.sqrt(x * x + y * y);
+					l = (l - distances[i]) / l * alpha * strengths[i];
+					x *= l, y *= l;
+					target.vx -= x * (b = bias[i]);
+					target.vy -= y * b;
+					source.vx += x * (b = 1 - b);
+					source.vy += y * b;
+				  }
+				}
+			  }
+
+			  function initialize() {
+				if (!nodes) return;
+
+				var i,
+					n = nodes.length,
+					m = links.length,
+					nodeById = map$1(nodes, id),
+					link;
+
+				for (i = 0, count = new Array(n); i < n; ++i) {
+				  count[i] = 0;
+				}
+
+				for (i = 0; i < m; ++i) {
+				  link = links[i], link.index = i;
+				  if (typeof link.source !== "object") link.source = find(nodeById, link.source);
+				  if (typeof link.target !== "object") link.target = find(nodeById, link.target);
+				  ++count[link.source.index], ++count[link.target.index];
+				}
+
+				for (i = 0, bias = new Array(m); i < m; ++i) {
+				  link = links[i], bias[i] = count[link.source.index] / (count[link.source.index] + count[link.target.index]);
+				}
+
+				strengths = new Array(m), initializeStrength();
+				distances = new Array(m), initializeDistance();
+			  }
+
+			  function initializeStrength() {
+				if (!nodes) return;
+
+				for (var i = 0, n = links.length; i < n; ++i) {
+				  strengths[i] = +strength(links[i], i, links);
+				}
+			  }
+
+			  function initializeDistance() {
+				if (!nodes) return;
+
+				for (var i = 0, n = links.length; i < n; ++i) {
+				  distances[i] = +distance(links[i], i, links);
+				}
+			  }
+
+			  force.initialize = function(_) {
+				nodes = _;
+				initialize();
+			  };
+
+			  force.links = function(_) {
+				return arguments.length ? (links = _, initialize(), force) : links;
+			  };
+
+			  force.id = function(_) {
+				return arguments.length ? (id = _, force) : id;
+			  };
+
+			  force.iterations = function(_) {
+				return arguments.length ? (iterations = +_, force) : iterations;
+			  };
+
+			  force.strength = function(_) {
+				return arguments.length ? (strength = typeof _ === "function" ? _ : constant$7(+_), initializeStrength(), force) : strength;
+			  };
+
+			  force.distance = function(_) {
+				return arguments.length ? (distance = typeof _ === "function" ? _ : constant$7(+_), initializeDistance(), force) : distance;
+			  };
+
+			  return force;
+			};
+
+			function x$2(d) {
+			  return d.x;
+			}
+
+			function y$2(d) {
+			  return d.y;
+			}
+
+			var initialRadius = 10;
+			var initialAngle = Math.PI * (3 - Math.sqrt(5));
+
+			var simulation = function(nodes) {
+			  var simulation,
+				  alpha = 1,
+				  alphaMin = 0.001,
+				  alphaDecay = 1 - Math.pow(alphaMin, 1 / 300),
+				  alphaTarget = 0,
+				  velocityDecay = 0.6,
+				  forces = map$1(),
+				  stepper = timer(step),
+				  event = dispatch("tick", "end");
+
+			  if (nodes == null) nodes = [];
+
+			  function step() {
+				tick();
+				event.call("tick", simulation);
+				if (alpha < alphaMin) {
+				  stepper.stop();
+				  event.call("end", simulation);
+				}
+			  }
+
+			  function tick() {
+				var i, n = nodes.length, node;
+
+				alpha += (alphaTarget - alpha) * alphaDecay;
+
+				forces.each(function(force) {
+				  force(alpha);
+				});
+
+				for (i = 0; i < n; ++i) {
+				  node = nodes[i];
+				  if (node.fx == null) node.x += node.vx *= velocityDecay;
+				  else node.x = node.fx, node.vx = 0;
+				  if (node.fy == null) node.y += node.vy *= velocityDecay;
+				  else node.y = node.fy, node.vy = 0;
+				}
+			  }
+
+			  function initializeNodes() {
+				for (var i = 0, n = nodes.length, node; i < n; ++i) {
+				  node = nodes[i], node.index = i;
+				  if (isNaN(node.x) || isNaN(node.y)) {
+					var radius = initialRadius * Math.sqrt(i), angle = i * initialAngle;
+					node.x = radius * Math.cos(angle);
+					node.y = radius * Math.sin(angle);
+				  }
+				  if (isNaN(node.vx) || isNaN(node.vy)) {
+					node.vx = node.vy = 0;
+				  }
+				}
+			  }
+
+			  function initializeForce(force) {
+				if (force.initialize) force.initialize(nodes);
+				return force;
+			  }
+
+			  initializeNodes();
+
+			  return simulation = {
+				tick: tick,
+
+				restart: function() {
+				  return stepper.restart(step), simulation;
+				},
+
+				stop: function() {
+				  return stepper.stop(), simulation;
+				},
+
+				nodes: function(_) {
+				  return arguments.length ? (nodes = _, initializeNodes(), forces.each(initializeForce), simulation) : nodes;
+				},
+
+				alpha: function(_) {
+				  return arguments.length ? (alpha = +_, simulation) : alpha;
+				},
+
+				alphaMin: function(_) {
+				  return arguments.length ? (alphaMin = +_, simulation) : alphaMin;
+				},
+
+				alphaDecay: function(_) {
+				  return arguments.length ? (alphaDecay = +_, simulation) : +alphaDecay;
+				},
+
+				alphaTarget: function(_) {
+				  return arguments.length ? (alphaTarget = +_, simulation) : alphaTarget;
+				},
+
+				velocityDecay: function(_) {
+				  return arguments.length ? (velocityDecay = 1 - _, simulation) : 1 - velocityDecay;
+				},
+
+				force: function(name, _) {
+				  return arguments.length > 1 ? ((_ == null ? forces.remove(name) : forces.set(name, initializeForce(_))), simulation) : forces.get(name);
+				},
+
+				find: function(x, y, radius) {
+				  var i = 0,
+					  n = nodes.length,
+					  dx,
+					  dy,
+					  d2,
+					  node,
+					  closest;
+
+				  if (radius == null) radius = Infinity;
+				  else radius *= radius;
+
+				  for (i = 0; i < n; ++i) {
+					node = nodes[i];
+					dx = x - node.x;
+					dy = y - node.y;
+					d2 = dx * dx + dy * dy;
+					if (d2 < radius) closest = node, radius = d2;
+				  }
+
+				  return closest;
+				},
+
+				on: function(name, _) {
+				  return arguments.length > 1 ? (event.on(name, _), simulation) : event.on(name);
+				}
+			  };
+			};
+
+			var manyBody = function() {
+			  var nodes,
+				  node,
+				  alpha,
+				  strength = constant$7(-30),
+				  strengths,
+				  distanceMin2 = 1,
+				  distanceMax2 = Infinity,
+				  theta2 = 0.81;
+
+			  function force(_) {
+				var i, n = nodes.length, tree = quadtree(nodes, x$2, y$2).visitAfter(accumulate);
+				for (alpha = _, i = 0; i < n; ++i) node = nodes[i], tree.visit(apply);
+			  }
+
+			  function initialize() {
+				if (!nodes) return;
+				var i, n = nodes.length;
+				strengths = new Array(n);
+				for (i = 0; i < n; ++i) strengths[i] = +strength(nodes[i], i, nodes);
+			  }
+
+			  function accumulate(quad) {
+				var strength = 0, q, c, x$$1, y$$1, i;
+
+				// For internal nodes, accumulate forces from child quadrants.
+				if (quad.length) {
+				  for (x$$1 = y$$1 = i = 0; i < 4; ++i) {
+					if ((q = quad[i]) && (c = q.value)) {
+					  strength += c, x$$1 += c * q.x, y$$1 += c * q.y;
+					}
+				  }
+				  quad.x = x$$1 / strength;
+				  quad.y = y$$1 / strength;
+				}
+
+				// For leaf nodes, accumulate forces from coincident quadrants.
+				else {
+				  q = quad;
+				  q.x = q.data.x;
+				  q.y = q.data.y;
+				  do strength += strengths[q.data.index];
+				  while (q = q.next);
+				}
+
+				quad.value = strength;
+			  }
+
+			  function apply(quad, x1, _, x2) {
+				if (!quad.value) return true;
+
+				var x$$1 = quad.x - node.x,
+					y$$1 = quad.y - node.y,
+					w = x2 - x1,
+					l = x$$1 * x$$1 + y$$1 * y$$1;
+
+				// Apply the Barnes-Hut approximation if possible.
+				// Limit forces for very close nodes; randomize direction if coincident.
+				if (w * w / theta2 < l) {
+				  if (l < distanceMax2) {
+					if (x$$1 === 0) x$$1 = jiggle(), l += x$$1 * x$$1;
+					if (y$$1 === 0) y$$1 = jiggle(), l += y$$1 * y$$1;
+					if (l < distanceMin2) l = Math.sqrt(distanceMin2 * l);
+					node.vx += x$$1 * quad.value * alpha / l;
+					node.vy += y$$1 * quad.value * alpha / l;
+				  }
+				  return true;
+				}
+
+				// Otherwise, process points directly.
+				else if (quad.length || l >= distanceMax2) return;
+
+				// Limit forces for very close nodes; randomize direction if coincident.
+				if (quad.data !== node || quad.next) {
+				  if (x$$1 === 0) x$$1 = jiggle(), l += x$$1 * x$$1;
+				  if (y$$1 === 0) y$$1 = jiggle(), l += y$$1 * y$$1;
+				  if (l < distanceMin2) l = Math.sqrt(distanceMin2 * l);
+				}
+
+				do if (quad.data !== node) {
+				  w = strengths[quad.data.index] * alpha / l;
+				  node.vx += x$$1 * w;
+				  node.vy += y$$1 * w;
+				} while (quad = quad.next);
+			  }
+
+			  force.initialize = function(_) {
+				nodes = _;
+				initialize();
+			  };
+
+			  force.strength = function(_) {
+				return arguments.length ? (strength = typeof _ === "function" ? _ : constant$7(+_), initialize(), force) : strength;
+			  };
+
+			  force.distanceMin = function(_) {
+				return arguments.length ? (distanceMin2 = _ * _, force) : Math.sqrt(distanceMin2);
+			  };
+
+			  force.distanceMax = function(_) {
+				return arguments.length ? (distanceMax2 = _ * _, force) : Math.sqrt(distanceMax2);
+			  };
+
+			  force.theta = function(_) {
+				return arguments.length ? (theta2 = _ * _, force) : Math.sqrt(theta2);
+			  };
+
+			  return force;
+			};
+
+			var x$3 = function(x) {
+			  var strength = constant$7(0.1),
+				  nodes,
+				  strengths,
+				  xz;
+
+			  if (typeof x !== "function") x = constant$7(x == null ? 0 : +x);
+
+			  function force(alpha) {
+				for (var i = 0, n = nodes.length, node; i < n; ++i) {
+				  node = nodes[i], node.vx += (xz[i] - node.x) * strengths[i] * alpha;
+				}
+			  }
+
+			  function initialize() {
+				if (!nodes) return;
+				var i, n = nodes.length;
+				strengths = new Array(n);
+				xz = new Array(n);
+				for (i = 0; i < n; ++i) {
+				  strengths[i] = isNaN(xz[i] = +x(nodes[i], i, nodes)) ? 0 : +strength(nodes[i], i, nodes);
+				}
+			  }
+
+			  force.initialize = function(_) {
+				nodes = _;
+				initialize();
+			  };
+
+			  force.strength = function(_) {
+				return arguments.length ? (strength = typeof _ === "function" ? _ : constant$7(+_), initialize(), force) : strength;
+			  };
+
+			  force.x = function(_) {
+				return arguments.length ? (x = typeof _ === "function" ? _ : constant$7(+_), initialize(), force) : x;
+			  };
+
+			  return force;
+			};
+
+			var y$3 = function(y) {
+			  var strength = constant$7(0.1),
+				  nodes,
+				  strengths,
+				  yz;
+
+			  if (typeof y !== "function") y = constant$7(y == null ? 0 : +y);
+
+			  function force(alpha) {
+				for (var i = 0, n = nodes.length, node; i < n; ++i) {
+				  node = nodes[i], node.vy += (yz[i] - node.y) * strengths[i] * alpha;
+				}
+			  }
+
+			  function initialize() {
+				if (!nodes) return;
+				var i, n = nodes.length;
+				strengths = new Array(n);
+				yz = new Array(n);
+				for (i = 0; i < n; ++i) {
+				  strengths[i] = isNaN(yz[i] = +y(nodes[i], i, nodes)) ? 0 : +strength(nodes[i], i, nodes);
+				}
+			  }
+
+			  force.initialize = function(_) {
+				nodes = _;
+				initialize();
+			  };
+
+			  force.strength = function(_) {
+				return arguments.length ? (strength = typeof _ === "function" ? _ : constant$7(+_), initialize(), force) : strength;
+			  };
+
+			  force.y = function(_) {
+				return arguments.length ? (y = typeof _ === "function" ? _ : constant$7(+_), initialize(), force) : y;
+			  };
+
+			  return force;
+			};
+
+			function nopropagation() {
+			  exports.event.stopImmediatePropagation();
+			}
+
+			var noevent = function() {
+			  exports.event.preventDefault();
+			  exports.event.stopImmediatePropagation();
+			};
+
+			var dragDisable = function(view) {
+			  var root = view.document.documentElement,
+				  selection$$1 = select(view).on("dragstart.drag", noevent, true);
+			  if ("onselectstart" in root) {
+				selection$$1.on("selectstart.drag", noevent, true);
+			  } else {
+				root.__noselect = root.style.MozUserSelect;
+				root.style.MozUserSelect = "none";
+			  }
+			};
+
+			function yesdrag(view, noclick) {
+			  var root = view.document.documentElement,
+				  selection$$1 = select(view).on("dragstart.drag", null);
+			  if (noclick) {
+				selection$$1.on("click.drag", noevent, true);
+				setTimeout(function() { selection$$1.on("click.drag", null); }, 0);
+			  }
+			  if ("onselectstart" in root) {
+				selection$$1.on("selectstart.drag", null);
+			  } else {
+				root.style.MozUserSelect = root.__noselect;
+				delete root.__noselect;
+			  }
+			}
+
+			var constant$8 = function(x) {
+			  return function() {
+				return x;
+			  };
+			};
+
+			function DragEvent(target, type, subject, id, active, x, y, dx, dy, dispatch) {
+			  this.target = target;
+			  this.type = type;
+			  this.subject = subject;
+			  this.identifier = id;
+			  this.active = active;
+			  this.x = x;
+			  this.y = y;
+			  this.dx = dx;
+			  this.dy = dy;
+			  this._ = dispatch;
+			}
+
+			DragEvent.prototype.on = function() {
+			  var value = this._.on.apply(this._, arguments);
+			  return value === this._ ? this : value;
+			};
+
+			// Ignore right-click, since that should open the context menu.
+			function defaultFilter() {
+			  return !exports.event.button;
+			}
+
+			function defaultContainer() {
+			  return this.parentNode;
+			}
+
+			function defaultSubject(d) {
+			  return d == null ? {x: exports.event.x, y: exports.event.y} : d;
+			}
+
+			var drag = function() {
+			  var filter = defaultFilter,
+				  container = defaultContainer,
+				  subject = defaultSubject,
+				  gestures = {},
+				  listeners = dispatch("start", "drag", "end"),
+				  active = 0,
+				  mousemoving,
+				  touchending;
+
+			  function drag(selection$$1) {
+				selection$$1
+					.on("mousedown.drag", mousedowned)
+					.on("touchstart.drag", touchstarted)
+					.on("touchmove.drag", touchmoved)
+					.on("touchend.drag touchcancel.drag", touchended)
+					.style("-webkit-tap-highlight-color", "rgba(0,0,0,0)");
+			  }
+
+			  function mousedowned() {
+				if (touchending || !filter.apply(this, arguments)) return;
+				var gesture = beforestart("mouse", container.apply(this, arguments), mouse, this, arguments);
+				if (!gesture) return;
+				select(exports.event.view).on("mousemove.drag", mousemoved, true).on("mouseup.drag", mouseupped, true);
+				dragDisable(exports.event.view);
+				nopropagation();
+				mousemoving = false;
+				gesture("start");
+			  }
+
+			  function mousemoved() {
+				noevent();
+				mousemoving = true;
+				gestures.mouse("drag");
+			  }
+
+			  function mouseupped() {
+				select(exports.event.view).on("mousemove.drag mouseup.drag", null);
+				yesdrag(exports.event.view, mousemoving);
+				noevent();
+				gestures.mouse("end");
+			  }
+
+			  function touchstarted() {
+				if (!filter.apply(this, arguments)) return;
+				var touches$$1 = exports.event.changedTouches,
+					c = container.apply(this, arguments),
+					n = touches$$1.length, i, gesture;
+
+				for (i = 0; i < n; ++i) {
+				  if (gesture = beforestart(touches$$1[i].identifier, c, touch, this, arguments)) {
+					nopropagation();
+					gesture("start");
+				  }
+				}
+			  }
+
+			  function touchmoved() {
+				var touches$$1 = exports.event.changedTouches,
+					n = touches$$1.length, i, gesture;
+
+				for (i = 0; i < n; ++i) {
+				  if (gesture = gestures[touches$$1[i].identifier]) {
+					noevent();
+					gesture("drag");
+				  }
+				}
+			  }
+
+			  function touchended() {
+				var touches$$1 = exports.event.changedTouches,
+					n = touches$$1.length, i, gesture;
+
+				if (touchending) clearTimeout(touchending);
+				touchending = setTimeout(function() { touchending = null; }, 500); // Ghost clicks are delayed!
+				for (i = 0; i < n; ++i) {
+				  if (gesture = gestures[touches$$1[i].identifier]) {
+					nopropagation();
+					gesture("end");
+				  }
+				}
+			  }
+
+			  function beforestart(id, container, point, that, args) {
+				var p = point(container, id), s, dx, dy,
+					sublisteners = listeners.copy();
+
+				if (!customEvent(new DragEvent(drag, "beforestart", s, id, active, p[0], p[1], 0, 0, sublisteners), function() {
+				  if ((exports.event.subject = s = subject.apply(that, args)) == null) return false;
+				  dx = s.x - p[0] || 0;
+				  dy = s.y - p[1] || 0;
+				  return true;
+				})) return;
+
+				return function gesture(type) {
+				  var p0 = p, n;
+				  switch (type) {
+					case "start": gestures[id] = gesture, n = active++; break;
+					case "end": delete gestures[id], --active; // nobreak
+					case "drag": p = point(container, id), n = active; break;
+				  }
+				  customEvent(new DragEvent(drag, type, s, id, n, p[0] + dx, p[1] + dy, p[0] - p0[0], p[1] - p0[1], sublisteners), sublisteners.apply, sublisteners, [type, that, args]);
+				};
+			  }
+
+			  drag.filter = function(_) {
+				return arguments.length ? (filter = typeof _ === "function" ? _ : constant$8(!!_), drag) : filter;
+			  };
+
+			  drag.container = function(_) {
+				return arguments.length ? (container = typeof _ === "function" ? _ : constant$8(_), drag) : container;
+			  };
+
+			  drag.subject = function(_) {
+				return arguments.length ? (subject = typeof _ === "function" ? _ : constant$8(_), drag) : subject;
+			  };
+
+			  drag.on = function() {
+				var value = listeners.on.apply(listeners, arguments);
+				return value === listeners ? drag : value;
+			  };
+
+			  return drag;
+			};
+
+			var constant$9 = function(x) {
+			  return function() {
+				return x;
+			  };
+			};
+
+			function x$4(d) {
+			  return d[0];
+			}
+
+			function y$4(d) {
+			  return d[1];
+			}
+
+			function RedBlackTree() {
+			  this._ = null; // root node
+			}
+
+			function RedBlackNode(node) {
+			  node.U = // parent node
+			  node.C = // color - true for red, false for black
+			  node.L = // left node
+			  node.R = // right node
+			  node.P = // previous node
+			  node.N = null; // next node
+			}
+
+			RedBlackTree.prototype = {
+			  constructor: RedBlackTree,
+
+			  insert: function(after, node) {
+				var parent, grandpa, uncle;
+
+				if (after) {
+				  node.P = after;
+				  node.N = after.N;
+				  if (after.N) after.N.P = node;
+				  after.N = node;
+				  if (after.R) {
+					after = after.R;
+					while (after.L) after = after.L;
+					after.L = node;
+				  } else {
+					after.R = node;
+				  }
+				  parent = after;
+				} else if (this._) {
+				  after = RedBlackFirst(this._);
+				  node.P = null;
+				  node.N = after;
+				  after.P = after.L = node;
+				  parent = after;
+				} else {
+				  node.P = node.N = null;
+				  this._ = node;
+				  parent = null;
+				}
+				node.L = node.R = null;
+				node.U = parent;
+				node.C = true;
+
+				after = node;
+				while (parent && parent.C) {
+				  grandpa = parent.U;
+				  if (parent === grandpa.L) {
+					uncle = grandpa.R;
+					if (uncle && uncle.C) {
+					  parent.C = uncle.C = false;
+					  grandpa.C = true;
+					  after = grandpa;
+					} else {
+					  if (after === parent.R) {
+						RedBlackRotateLeft(this, parent);
+						after = parent;
+						parent = after.U;
+					  }
+					  parent.C = false;
+					  grandpa.C = true;
+					  RedBlackRotateRight(this, grandpa);
+					}
+				  } else {
+					uncle = grandpa.L;
+					if (uncle && uncle.C) {
+					  parent.C = uncle.C = false;
+					  grandpa.C = true;
+					  after = grandpa;
+					} else {
+					  if (after === parent.L) {
+						RedBlackRotateRight(this, parent);
+						after = parent;
+						parent = after.U;
+					  }
+					  parent.C = false;
+					  grandpa.C = true;
+					  RedBlackRotateLeft(this, grandpa);
+					}
+				  }
+				  parent = after.U;
+				}
+				this._.C = false;
+			  },
+
+			  remove: function(node) {
+				if (node.N) node.N.P = node.P;
+				if (node.P) node.P.N = node.N;
+				node.N = node.P = null;
+
+				var parent = node.U,
+					sibling,
+					left = node.L,
+					right = node.R,
+					next,
+					red;
+
+				if (!left) next = right;
+				else if (!right) next = left;
+				else next = RedBlackFirst(right);
+
+				if (parent) {
+				  if (parent.L === node) parent.L = next;
+				  else parent.R = next;
+				} else {
+				  this._ = next;
+				}
+
+				if (left && right) {
+				  red = next.C;
+				  next.C = node.C;
+				  next.L = left;
+				  left.U = next;
+				  if (next !== right) {
+					parent = next.U;
+					next.U = node.U;
+					node = next.R;
+					parent.L = node;
+					next.R = right;
+					right.U = next;
+				  } else {
+					next.U = parent;
+					parent = next;
+					node = next.R;
+				  }
+				} else {
+				  red = node.C;
+				  node = next;
+				}
+
+				if (node) node.U = parent;
+				if (red) return;
+				if (node && node.C) { node.C = false; return; }
+
+				do {
+				  if (node === this._) break;
+				  if (node === parent.L) {
+					sibling = parent.R;
+					if (sibling.C) {
+					  sibling.C = false;
+					  parent.C = true;
+					  RedBlackRotateLeft(this, parent);
+					  sibling = parent.R;
+					}
+					if ((sibling.L && sibling.L.C)
+						|| (sibling.R && sibling.R.C)) {
+					  if (!sibling.R || !sibling.R.C) {
+						sibling.L.C = false;
+						sibling.C = true;
+						RedBlackRotateRight(this, sibling);
+						sibling = parent.R;
+					  }
+					  sibling.C = parent.C;
+					  parent.C = sibling.R.C = false;
+					  RedBlackRotateLeft(this, parent);
+					  node = this._;
+					  break;
+					}
+				  } else {
+					sibling = parent.L;
+					if (sibling.C) {
+					  sibling.C = false;
+					  parent.C = true;
+					  RedBlackRotateRight(this, parent);
+					  sibling = parent.L;
+					}
+					if ((sibling.L && sibling.L.C)
+					  || (sibling.R && sibling.R.C)) {
+					  if (!sibling.L || !sibling.L.C) {
+						sibling.R.C = false;
+						sibling.C = true;
+						RedBlackRotateLeft(this, sibling);
+						sibling = parent.L;
+					  }
+					  sibling.C = parent.C;
+					  parent.C = sibling.L.C = false;
+					  RedBlackRotateRight(this, parent);
+					  node = this._;
+					  break;
+					}
+				  }
+				  sibling.C = true;
+				  node = parent;
+				  parent = parent.U;
+				} while (!node.C);
+
+				if (node) node.C = false;
+			  }
+			};
+
+			function RedBlackRotateLeft(tree, node) {
+			  var p = node,
+				  q = node.R,
+				  parent = p.U;
+
+			  if (parent) {
+				if (parent.L === p) parent.L = q;
+				else parent.R = q;
+			  } else {
+				tree._ = q;
+			  }
+
+			  q.U = parent;
+			  p.U = q;
+			  p.R = q.L;
+			  if (p.R) p.R.U = p;
+			  q.L = p;
+			}
+
+			function RedBlackRotateRight(tree, node) {
+			  var p = node,
+				  q = node.L,
+				  parent = p.U;
+
+			  if (parent) {
+				if (parent.L === p) parent.L = q;
+				else parent.R = q;
+			  } else {
+				tree._ = q;
+			  }
+
+			  q.U = parent;
+			  p.U = q;
+			  p.L = q.R;
+			  if (p.L) p.L.U = p;
+			  q.R = p;
+			}
+
+			function RedBlackFirst(node) {
+			  while (node.L) node = node.L;
+			  return node;
+			}
+
+			function createEdge(left, right, v0, v1) {
+			  var edge = [null, null],
+				  index = edges.push(edge) - 1;
+			  edge.left = left;
+			  edge.right = right;
+			  if (v0) setEdgeEnd(edge, left, right, v0);
+			  if (v1) setEdgeEnd(edge, right, left, v1);
+			  cells[left.index].halfedges.push(index);
+			  cells[right.index].halfedges.push(index);
+			  return edge;
+			}
+
+			function createBorderEdge(left, v0, v1) {
+			  var edge = [v0, v1];
+			  edge.left = left;
+			  return edge;
+			}
+
+			function setEdgeEnd(edge, left, right, vertex) {
+			  if (!edge[0] && !edge[1]) {
+				edge[0] = vertex;
+				edge.left = left;
+				edge.right = right;
+			  } else if (edge.left === right) {
+				edge[1] = vertex;
+			  } else {
+				edge[0] = vertex;
+			  }
+			}
+
+			// Liang–Barsky line clipping.
+			function clipEdge(edge, x0, y0, x1, y1) {
+			  var a = edge[0],
+				  b = edge[1],
+				  ax = a[0],
+				  ay = a[1],
+				  bx = b[0],
+				  by = b[1],
+				  t0 = 0,
+				  t1 = 1,
+				  dx = bx - ax,
+				  dy = by - ay,
+				  r;
+
+			  r = x0 - ax;
+			  if (!dx && r > 0) return;
+			  r /= dx;
+			  if (dx < 0) {
+				if (r < t0) return;
+				if (r < t1) t1 = r;
+			  } else if (dx > 0) {
+				if (r > t1) return;
+				if (r > t0) t0 = r;
+			  }
+
+			  r = x1 - ax;
+			  if (!dx && r < 0) return;
+			  r /= dx;
+			  if (dx < 0) {
+				if (r > t1) return;
+				if (r > t0) t0 = r;
+			  } else if (dx > 0) {
+				if (r < t0) return;
+				if (r < t1) t1 = r;
+			  }
+
+			  r = y0 - ay;
+			  if (!dy && r > 0) return;
+			  r /= dy;
+			  if (dy < 0) {
+				if (r < t0) return;
+				if (r < t1) t1 = r;
+			  } else if (dy > 0) {
+				if (r > t1) return;
+				if (r > t0) t0 = r;
+			  }
+
+			  r = y1 - ay;
+			  if (!dy && r < 0) return;
+			  r /= dy;
+			  if (dy < 0) {
+				if (r > t1) return;
+				if (r > t0) t0 = r;
+			  } else if (dy > 0) {
+				if (r < t0) return;
+				if (r < t1) t1 = r;
+			  }
+
+			  if (!(t0 > 0) && !(t1 < 1)) return true; // TODO Better check?
+
+			  if (t0 > 0) edge[0] = [ax + t0 * dx, ay + t0 * dy];
+			  if (t1 < 1) edge[1] = [ax + t1 * dx, ay + t1 * dy];
+			  return true;
+			}
+
+			function connectEdge(edge, x0, y0, x1, y1) {
+			  var v1 = edge[1];
+			  if (v1) return true;
+
+			  var v0 = edge[0],
+				  left = edge.left,
+				  right = edge.right,
+				  lx = left[0],
+				  ly = left[1],
+				  rx = right[0],
+				  ry = right[1],
+				  fx = (lx + rx) / 2,
+				  fy = (ly + ry) / 2,
+				  fm,
+				  fb;
+
+			  if (ry === ly) {
+				if (fx < x0 || fx >= x1) return;
+				if (lx > rx) {
+				  if (!v0) v0 = [fx, y0];
+				  else if (v0[1] >= y1) return;
+				  v1 = [fx, y1];
+				} else {
+				  if (!v0) v0 = [fx, y1];
+				  else if (v0[1] < y0) return;
+				  v1 = [fx, y0];
+				}
+			  } else {
+				fm = (lx - rx) / (ry - ly);
+				fb = fy - fm * fx;
+				if (fm < -1 || fm > 1) {
+				  if (lx > rx) {
+					if (!v0) v0 = [(y0 - fb) / fm, y0];
+					else if (v0[1] >= y1) return;
+					v1 = [(y1 - fb) / fm, y1];
+				  } else {
+					if (!v0) v0 = [(y1 - fb) / fm, y1];
+					else if (v0[1] < y0) return;
+					v1 = [(y0 - fb) / fm, y0];
+				  }
+				} else {
+				  if (ly < ry) {
+					if (!v0) v0 = [x0, fm * x0 + fb];
+					else if (v0[0] >= x1) return;
+					v1 = [x1, fm * x1 + fb];
+				  } else {
+					if (!v0) v0 = [x1, fm * x1 + fb];
+					else if (v0[0] < x0) return;
+					v1 = [x0, fm * x0 + fb];
+				  }
+				}
+			  }
+
+			  edge[0] = v0;
+			  edge[1] = v1;
+			  return true;
+			}
+
+			function clipEdges(x0, y0, x1, y1) {
+			  var i = edges.length,
+				  edge;
+
+			  while (i--) {
+				if (!connectEdge(edge = edges[i], x0, y0, x1, y1)
+					|| !clipEdge(edge, x0, y0, x1, y1)
+					|| !(Math.abs(edge[0][0] - edge[1][0]) > epsilon$3
+						|| Math.abs(edge[0][1] - edge[1][1]) > epsilon$3)) {
+				  delete edges[i];
+				}
+			  }
+			}
+
+			function createCell(site) {
+			  return cells[site.index] = {
+				site: site,
+				halfedges: []
+			  };
+			}
+
+			function cellHalfedgeAngle(cell, edge) {
+			  var site = cell.site,
+				  va = edge.left,
+				  vb = edge.right;
+			  if (site === vb) vb = va, va = site;
+			  if (vb) return Math.atan2(vb[1] - va[1], vb[0] - va[0]);
+			  if (site === va) va = edge[1], vb = edge[0];
+			  else va = edge[0], vb = edge[1];
+			  return Math.atan2(va[0] - vb[0], vb[1] - va[1]);
+			}
+
+			function cellHalfedgeStart(cell, edge) {
+			  return edge[+(edge.left !== cell.site)];
+			}
+
+			function cellHalfedgeEnd(cell, edge) {
+			  return edge[+(edge.left === cell.site)];
+			}
+
+			function sortCellHalfedges() {
+			  for (var i = 0, n = cells.length, cell, halfedges, j, m; i < n; ++i) {
+				if ((cell = cells[i]) && (m = (halfedges = cell.halfedges).length)) {
+				  var index = new Array(m),
+					  array = new Array(m);
+				  for (j = 0; j < m; ++j) index[j] = j, array[j] = cellHalfedgeAngle(cell, edges[halfedges[j]]);
+				  index.sort(function(i, j) { return array[j] - array[i]; });
+				  for (j = 0; j < m; ++j) array[j] = halfedges[index[j]];
+				  for (j = 0; j < m; ++j) halfedges[j] = array[j];
+				}
+			  }
+			}
+
+			function clipCells(x0, y0, x1, y1) {
+			  var nCells = cells.length,
+				  iCell,
+				  cell,
+				  site,
+				  iHalfedge,
+				  halfedges,
+				  nHalfedges,
+				  start,
+				  startX,
+				  startY,
+				  end,
+				  endX,
+				  endY,
+				  cover = true;
+
+			  for (iCell = 0; iCell < nCells; ++iCell) {
+				if (cell = cells[iCell]) {
+				  site = cell.site;
+				  halfedges = cell.halfedges;
+				  iHalfedge = halfedges.length;
+
+				  // Remove any dangling clipped edges.
+				  while (iHalfedge--) {
+					if (!edges[halfedges[iHalfedge]]) {
+					  halfedges.splice(iHalfedge, 1);
+					}
+				  }
+
+				  // Insert any border edges as necessary.
+				  iHalfedge = 0, nHalfedges = halfedges.length;
+				  while (iHalfedge < nHalfedges) {
+					end = cellHalfedgeEnd(cell, edges[halfedges[iHalfedge]]), endX = end[0], endY = end[1];
+					start = cellHalfedgeStart(cell, edges[halfedges[++iHalfedge % nHalfedges]]), startX = start[0], startY = start[1];
+					if (Math.abs(endX - startX) > epsilon$3 || Math.abs(endY - startY) > epsilon$3) {
+					  halfedges.splice(iHalfedge, 0, edges.push(createBorderEdge(site, end,
+						  Math.abs(endX - x0) < epsilon$3 && y1 - endY > epsilon$3 ? [x0, Math.abs(startX - x0) < epsilon$3 ? startY : y1]
+						  : Math.abs(endY - y1) < epsilon$3 && x1 - endX > epsilon$3 ? [Math.abs(startY - y1) < epsilon$3 ? startX : x1, y1]
+						  : Math.abs(endX - x1) < epsilon$3 && endY - y0 > epsilon$3 ? [x1, Math.abs(startX - x1) < epsilon$3 ? startY : y0]
+						  : Math.abs(endY - y0) < epsilon$3 && endX - x0 > epsilon$3 ? [Math.abs(startY - y0) < epsilon$3 ? startX : x0, y0]
+						  : null)) - 1);
+					  ++nHalfedges;
+					}
+				  }
+
+				  if (nHalfedges) cover = false;
+				}
+			  }
+
+			  // If there weren’t any edges, have the closest site cover the extent.
+			  // It doesn’t matter which corner of the extent we measure!
+			  if (cover) {
+				var dx, dy, d2, dc = Infinity;
+
+				for (iCell = 0, cover = null; iCell < nCells; ++iCell) {
+				  if (cell = cells[iCell]) {
+					site = cell.site;
+					dx = site[0] - x0;
+					dy = site[1] - y0;
+					d2 = dx * dx + dy * dy;
+					if (d2 < dc) dc = d2, cover = cell;
+				  }
+				}
+
+				if (cover) {
+				  var v00 = [x0, y0], v01 = [x0, y1], v11 = [x1, y1], v10 = [x1, y0];
+				  cover.halfedges.push(
+					edges.push(createBorderEdge(site = cover.site, v00, v01)) - 1,
+					edges.push(createBorderEdge(site, v01, v11)) - 1,
+					edges.push(createBorderEdge(site, v11, v10)) - 1,
+					edges.push(createBorderEdge(site, v10, v00)) - 1
+				  );
+				}
+			  }
+
+			  // Lastly delete any cells with no edges; these were entirely clipped.
+			  for (iCell = 0; iCell < nCells; ++iCell) {
+				if (cell = cells[iCell]) {
+				  if (!cell.halfedges.length) {
+					delete cells[iCell];
+				  }
+				}
+			  }
+			}
+
+			var circlePool = [];
+
+			var firstCircle;
+
+			function Circle() {
+			  RedBlackNode(this);
+			  this.x =
+			  this.y =
+			  this.arc =
+			  this.site =
+			  this.cy = null;
+			}
+
+			function attachCircle(arc) {
+			  var lArc = arc.P,
+				  rArc = arc.N;
+
+			  if (!lArc || !rArc) return;
+
+			  var lSite = lArc.site,
+				  cSite = arc.site,
+				  rSite = rArc.site;
+
+			  if (lSite === rSite) return;
+
+			  var bx = cSite[0],
+				  by = cSite[1],
+				  ax = lSite[0] - bx,
+				  ay = lSite[1] - by,
+				  cx = rSite[0] - bx,
+				  cy = rSite[1] - by;
+
+			  var d = 2 * (ax * cy - ay * cx);
+			  if (d >= -epsilon2$1) return;
+
+			  var ha = ax * ax + ay * ay,
+				  hc = cx * cx + cy * cy,
+				  x = (cy * ha - ay * hc) / d,
+				  y = (ax * hc - cx * ha) / d;
+
+			  var circle = circlePool.pop() || new Circle;
+			  circle.arc = arc;
+			  circle.site = cSite;
+			  circle.x = x + bx;
+			  circle.y = (circle.cy = y + by) + Math.sqrt(x * x + y * y); // y bottom
+
+			  arc.circle = circle;
+
+			  var before = null,
+				  node = circles._;
+
+			  while (node) {
+				if (circle.y < node.y || (circle.y === node.y && circle.x <= node.x)) {
+				  if (node.L) node = node.L;
+				  else { before = node.P; break; }
+				} else {
+				  if (node.R) node = node.R;
+				  else { before = node; break; }
+				}
+			  }
+
+			  circles.insert(before, circle);
+			  if (!before) firstCircle = circle;
+			}
+
+			function detachCircle(arc) {
+			  var circle = arc.circle;
+			  if (circle) {
+				if (!circle.P) firstCircle = circle.N;
+				circles.remove(circle);
+				circlePool.push(circle);
+				RedBlackNode(circle);
+				arc.circle = null;
+			  }
+			}
+
+			var beachPool = [];
+
+			function Beach() {
+			  RedBlackNode(this);
+			  this.edge =
+			  this.site =
+			  this.circle = null;
+			}
+
+			function createBeach(site) {
+			  var beach = beachPool.pop() || new Beach;
+			  beach.site = site;
+			  return beach;
+			}
+
+			function detachBeach(beach) {
+			  detachCircle(beach);
+			  beaches.remove(beach);
+			  beachPool.push(beach);
+			  RedBlackNode(beach);
+			}
+
+			function removeBeach(beach) {
+			  var circle = beach.circle,
+				  x = circle.x,
+				  y = circle.cy,
+				  vertex = [x, y],
+				  previous = beach.P,
+				  next = beach.N,
+				  disappearing = [beach];
+
+			  detachBeach(beach);
+
+			  var lArc = previous;
+			  while (lArc.circle
+				  && Math.abs(x - lArc.circle.x) < epsilon$3
+				  && Math.abs(y - lArc.circle.cy) < epsilon$3) {
+				previous = lArc.P;
+				disappearing.unshift(lArc);
+				detachBeach(lArc);
+				lArc = previous;
+			  }
+
+			  disappearing.unshift(lArc);
+			  detachCircle(lArc);
+
+			  var rArc = next;
+			  while (rArc.circle
+				  && Math.abs(x - rArc.circle.x) < epsilon$3
+				  && Math.abs(y - rArc.circle.cy) < epsilon$3) {
+				next = rArc.N;
+				disappearing.push(rArc);
+				detachBeach(rArc);
+				rArc = next;
+			  }
+
+			  disappearing.push(rArc);
+			  detachCircle(rArc);
+
+			  var nArcs = disappearing.length,
+				  iArc;
+			  for (iArc = 1; iArc < nArcs; ++iArc) {
+				rArc = disappearing[iArc];
+				lArc = disappearing[iArc - 1];
+				setEdgeEnd(rArc.edge, lArc.site, rArc.site, vertex);
+			  }
+
+			  lArc = disappearing[0];
+			  rArc = disappearing[nArcs - 1];
+			  rArc.edge = createEdge(lArc.site, rArc.site, null, vertex);
+
+			  attachCircle(lArc);
+			  attachCircle(rArc);
+			}
+
+			function addBeach(site) {
+			  var x = site[0],
+				  directrix = site[1],
+				  lArc,
+				  rArc,
+				  dxl,
+				  dxr,
+				  node = beaches._;
+
+			  while (node) {
+				dxl = leftBreakPoint(node, directrix) - x;
+				if (dxl > epsilon$3) node = node.L; else {
+				  dxr = x - rightBreakPoint(node, directrix);
+				  if (dxr > epsilon$3) {
+					if (!node.R) {
+					  lArc = node;
+					  break;
+					}
+					node = node.R;
+				  } else {
+					if (dxl > -epsilon$3) {
+					  lArc = node.P;
+					  rArc = node;
+					} else if (dxr > -epsilon$3) {
+					  lArc = node;
+					  rArc = node.N;
+					} else {
+					  lArc = rArc = node;
+					}
+					break;
+				  }
+				}
+			  }
+
+			  createCell(site);
+			  var newArc = createBeach(site);
+			  beaches.insert(lArc, newArc);
+
+			  if (!lArc && !rArc) return;
+
+			  if (lArc === rArc) {
+				detachCircle(lArc);
+				rArc = createBeach(lArc.site);
+				beaches.insert(newArc, rArc);
+				newArc.edge = rArc.edge = createEdge(lArc.site, newArc.site);
+				attachCircle(lArc);
+				attachCircle(rArc);
+				return;
+			  }
+
+			  if (!rArc) { // && lArc
+				newArc.edge = createEdge(lArc.site, newArc.site);
+				return;
+			  }
+
+			  // else lArc !== rArc
+			  detachCircle(lArc);
+			  detachCircle(rArc);
+
+			  var lSite = lArc.site,
+				  ax = lSite[0],
+				  ay = lSite[1],
+				  bx = site[0] - ax,
+				  by = site[1] - ay,
+				  rSite = rArc.site,
+				  cx = rSite[0] - ax,
+				  cy = rSite[1] - ay,
+				  d = 2 * (bx * cy - by * cx),
+				  hb = bx * bx + by * by,
+				  hc = cx * cx + cy * cy,
+				  vertex = [(cy * hb - by * hc) / d + ax, (bx * hc - cx * hb) / d + ay];
+
+			  setEdgeEnd(rArc.edge, lSite, rSite, vertex);
+			  newArc.edge = createEdge(lSite, site, null, vertex);
+			  rArc.edge = createEdge(site, rSite, null, vertex);
+			  attachCircle(lArc);
+			  attachCircle(rArc);
+			}
+
+			function leftBreakPoint(arc, directrix) {
+			  var site = arc.site,
+				  rfocx = site[0],
+				  rfocy = site[1],
+				  pby2 = rfocy - directrix;
+
+			  if (!pby2) return rfocx;
+
+			  var lArc = arc.P;
+			  if (!lArc) return -Infinity;
+
+			  site = lArc.site;
+			  var lfocx = site[0],
+				  lfocy = site[1],
+				  plby2 = lfocy - directrix;
+
+			  if (!plby2) return lfocx;
+
+			  var hl = lfocx - rfocx,
+				  aby2 = 1 / pby2 - 1 / plby2,
+				  b = hl / plby2;
+
+			  if (aby2) return (-b + Math.sqrt(b * b - 2 * aby2 * (hl * hl / (-2 * plby2) - lfocy + plby2 / 2 + rfocy - pby2 / 2))) / aby2 + rfocx;
+
+			  return (rfocx + lfocx) / 2;
+			}
+
+			function rightBreakPoint(arc, directrix) {
+			  var rArc = arc.N;
+			  if (rArc) return leftBreakPoint(rArc, directrix);
+			  var site = arc.site;
+			  return site[1] === directrix ? site[0] : Infinity;
+			}
+
+			var epsilon$3 = 1e-6;
+			var epsilon2$1 = 1e-12;
+			var beaches;
+			var cells;
+			var circles;
+			var edges;
+
+			function triangleArea(a, b, c) {
+			  return (a[0] - c[0]) * (b[1] - a[1]) - (a[0] - b[0]) * (c[1] - a[1]);
+			}
+
+			function lexicographic(a, b) {
+			  return b[1] - a[1]
+				  || b[0] - a[0];
+			}
+
+			function Diagram(sites, extent) {
+			  var site = sites.sort(lexicographic).pop(),
+				  x,
+				  y,
+				  circle;
+
+			  edges = [];
+			  cells = new Array(sites.length);
+			  beaches = new RedBlackTree;
+			  circles = new RedBlackTree;
+
+			  while (true) {
+				circle = firstCircle;
+				if (site && (!circle || site[1] < circle.y || (site[1] === circle.y && site[0] < circle.x))) {
+				  if (site[0] !== x || site[1] !== y) {
+					addBeach(site);
+					x = site[0], y = site[1];
+				  }
+				  site = sites.pop();
+				} else if (circle) {
+				  removeBeach(circle.arc);
+				} else {
+				  break;
+				}
+			  }
+
+			  sortCellHalfedges();
+
+			  if (extent) {
+				var x0 = +extent[0][0],
+					y0 = +extent[0][1],
+					x1 = +extent[1][0],
+					y1 = +extent[1][1];
+				clipEdges(x0, y0, x1, y1);
+				clipCells(x0, y0, x1, y1);
+			  }
+
+			  this.edges = edges;
+			  this.cells = cells;
+
+			  beaches =
+			  circles =
+			  edges =
+			  cells = null;
+			}
+
+			Diagram.prototype = {
+			  constructor: Diagram,
+
+			  polygons: function() {
+				var edges = this.edges;
+
+				return this.cells.map(function(cell) {
+				  var polygon = cell.halfedges.map(function(i) { return cellHalfedgeStart(cell, edges[i]); });
+				  polygon.data = cell.site.data;
+				  return polygon;
+				});
+			  },
+
+			  triangles: function() {
+				var triangles = [],
+					edges = this.edges;
+
+				this.cells.forEach(function(cell, i) {
+				  var site = cell.site,
+					  halfedges = cell.halfedges,
+					  j = -1,
+					  m = halfedges.length,
+					  s0,
+					  e1 = edges[halfedges[m - 1]],
+					  s1 = e1.left === site ? e1.right : e1.left;
+
+				  while (++j < m) {
+					s0 = s1;
+					e1 = edges[halfedges[j]];
+					s1 = e1.left === site ? e1.right : e1.left;
+					if (s0 && s1 && i < s0.index && i < s1.index && triangleArea(site, s0, s1) < 0) {
+					  triangles.push([site.data, s0.data, s1.data]);
+					}
+				  }
+				});
+
+				return triangles;
+			  },
+
+			  links: function() {
+				return this.edges.filter(function(edge) {
+				  return edge.right;
+				}).map(function(edge) {
+				  return {
+					source: edge.left.data,
+					target: edge.right.data
+				  };
+				});
+			  },
+
+			  find: function(x, y, radius) {
+				var that = this,
+					i0, i1 = that._found || 0,
+					cell = that.cells[i1] || that.cells[i1 = 0],
+					dx = x - cell.site[0],
+					dy = y - cell.site[1],
+					d2 = dx * dx + dy * dy;
+
+				do {
+				  cell = that.cells[i0 = i1], i1 = null;
+				  cell.halfedges.forEach(function(e) {
+					var edge = that.edges[e], v = edge.left;
+					if ((v === cell.site || !v) && !(v = edge.right)) return;
+					var vx = x - v[0],
+						vy = y - v[1],
+						v2 = vx * vx + vy * vy;
+					if (v2 < d2) d2 = v2, i1 = v.index;
+				  });
+				} while (i1 !== null);
+
+				that._found = i0;
+
+				return radius == null || d2 <= radius * radius ? cell.site : null;
+			  }
+			};
+
+			var voronoi = function() {
+			  var x$$1 = x$4,
+				  y$$1 = y$4,
+				  extent = null;
+
+			  function voronoi(data) {
+				return new Diagram(data.map(function(d, i) {
+				  var s = [Math.round(x$$1(d, i, data) / epsilon$3) * epsilon$3, Math.round(y$$1(d, i, data) / epsilon$3) * epsilon$3];
+				  s.index = i;
+				  s.data = d;
+				  return s;
+				}), extent);
+			  }
+
+			  voronoi.polygons = function(data) {
+				return voronoi(data).polygons();
+			  };
+
+			  voronoi.links = function(data) {
+				return voronoi(data).links();
+			  };
+
+			  voronoi.triangles = function(data) {
+				return voronoi(data).triangles();
+			  };
+
+			  voronoi.x = function(_) {
+				return arguments.length ? (x$$1 = typeof _ === "function" ? _ : constant$9(+_), voronoi) : x$$1;
+			  };
+
+			  voronoi.y = function(_) {
+				return arguments.length ? (y$$1 = typeof _ === "function" ? _ : constant$9(+_), voronoi) : y$$1;
+			  };
+
+			  voronoi.extent = function(_) {
+				return arguments.length ? (extent = _ == null ? null : [[+_[0][0], +_[0][1]], [+_[1][0], +_[1][1]]], voronoi) : extent && [[extent[0][0], extent[0][1]], [extent[1][0], extent[1][1]]];
+			  };
+
+			  voronoi.size = function(_) {
+				return arguments.length ? (extent = _ == null ? null : [[0, 0], [+_[0], +_[1]]], voronoi) : extent && [extent[1][0] - extent[0][0], extent[1][1] - extent[0][1]];
+			  };
+
+			  return voronoi;
+			};
+
+			var constant$10 = function(x) {
+			  return function() {
+				return x;
+			  };
+			};
+
+			function ZoomEvent(target, type, transform) {
+			  this.target = target;
+			  this.type = type;
+			  this.transform = transform;
+			}
+
+			function Transform(k, x, y) {
+			  this.k = k;
+			  this.x = x;
+			  this.y = y;
+			}
+
+			Transform.prototype = {
+			  constructor: Transform,
+			  scale: function(k) {
+				return k === 1 ? this : new Transform(this.k * k, this.x, this.y);
+			  },
+			  translate: function(x, y) {
+				return x === 0 & y === 0 ? this : new Transform(this.k, this.x + this.k * x, this.y + this.k * y);
+			  },
+			  apply: function(point) {
+				return [point[0] * this.k + this.x, point[1] * this.k + this.y];
+			  },
+			  applyX: function(x) {
+				return x * this.k + this.x;
+			  },
+			  applyY: function(y) {
+				return y * this.k + this.y;
+			  },
+			  invert: function(location) {
+				return [(location[0] - this.x) / this.k, (location[1] - this.y) / this.k];
+			  },
+			  invertX: function(x) {
+				return (x - this.x) / this.k;
+			  },
+			  invertY: function(y) {
+				return (y - this.y) / this.k;
+			  },
+			  rescaleX: function(x) {
+				return x.copy().domain(x.range().map(this.invertX, this).map(x.invert, x));
+			  },
+			  rescaleY: function(y) {
+				return y.copy().domain(y.range().map(this.invertY, this).map(y.invert, y));
+			  },
+			  toString: function() {
+				return "translate(" + this.x + "," + this.y + ") scale(" + this.k + ")";
+			  }
+			};
+
+			var identity$6 = new Transform(1, 0, 0);
+
+			transform.prototype = Transform.prototype;
+
+			function transform(node) {
+			  return node.__zoom || identity$6;
+			}
+
+			function nopropagation$1() {
+			  exports.event.stopImmediatePropagation();
+			}
+
+			var noevent$1 = function() {
+			  exports.event.preventDefault();
+			  exports.event.stopImmediatePropagation();
+			};
+
+			// Ignore right-click, since that should open the context menu.
+			function defaultFilter$1() {
+			  return !exports.event.button;
+			}
+
+			function defaultExtent() {
+			  var e = this, w, h;
+			  if (e instanceof SVGElement) {
+				e = e.ownerSVGElement || e;
+				w = e.width.baseVal.value;
+				h = e.height.baseVal.value;
+			  } else {
+				w = e.clientWidth;
+				h = e.clientHeight;
+			  }
+			  return [[0, 0], [w, h]];
+			}
+
+			function defaultTransform() {
+			  return this.__zoom || identity$6;
+			}
+
+			var zoom = function() {
+			  var filter = defaultFilter$1,
+				  extent = defaultExtent,
+				  k0 = 0,
+				  k1 = Infinity,
+				  x0 = -k1,
+				  x1 = k1,
+				  y0 = x0,
+				  y1 = x1,
+				  duration = 250,
+				  gestures = [],
+				  listeners = dispatch("start", "zoom", "end"),
+				  touchstarting,
+				  touchending,
+				  touchDelay = 500,
+				  wheelDelay = 150;
+
+			  function zoom(selection$$1) {
+				selection$$1
+					.on("wheel.zoom", wheeled)
+					.on("mousedown.zoom", mousedowned)
+					.on("dblclick.zoom", dblclicked)
+					.on("touchstart.zoom", touchstarted)
+					.on("touchmove.zoom", touchmoved)
+					.on("touchend.zoom touchcancel.zoom", touchended)
+					.style("-webkit-tap-highlight-color", "rgba(0,0,0,0)")
+					.property("__zoom", defaultTransform);
+			  }
+
+			  zoom.transform = function(collection, transform) {
+				var selection$$1 = collection.selection ? collection.selection() : collection;
+				selection$$1.property("__zoom", defaultTransform);
+				if (collection !== selection$$1) {
+				  schedule(collection, transform);
+				} else {
+				  selection$$1.interrupt().each(function() {
+					gesture(this, arguments)
+						.start()
+						.zoom(null, typeof transform === "function" ? transform.apply(this, arguments) : transform)
+						.end();
+				  });
+				}
+			  };
+
+			  zoom.scaleBy = function(selection$$1, k) {
+				zoom.scaleTo(selection$$1, function() {
+				  var k0 = this.__zoom.k,
+					  k1 = typeof k === "function" ? k.apply(this, arguments) : k;
+				  return k0 * k1;
+				});
+			  };
+
+			  zoom.scaleTo = function(selection$$1, k) {
+				zoom.transform(selection$$1, function() {
+				  var e = extent.apply(this, arguments),
+					  t0 = this.__zoom,
+					  p0 = centroid(e),
+					  p1 = t0.invert(p0),
+					  k1 = typeof k === "function" ? k.apply(this, arguments) : k;
+				  return constrain(translate(scale(t0, k1), p0, p1), e);
+				});
+			  };
+
+			  zoom.translateBy = function(selection$$1, x, y) {
+				zoom.transform(selection$$1, function() {
+				  return constrain(this.__zoom.translate(
+					typeof x === "function" ? x.apply(this, arguments) : x,
+					typeof y === "function" ? y.apply(this, arguments) : y
+				  ), extent.apply(this, arguments));
+				});
+			  };
+
+			  function scale(transform, k) {
+				k = Math.max(k0, Math.min(k1, k));
+				return k === transform.k ? transform : new Transform(k, transform.x, transform.y);
+			  }
+
+			  function translate(transform, p0, p1) {
+				var x = p0[0] - p1[0] * transform.k, y = p0[1] - p1[1] * transform.k;
+				return x === transform.x && y === transform.y ? transform : new Transform(transform.k, x, y);
+			  }
+
+			  function constrain(transform, extent) {
+				var dx = Math.min(0, transform.invertX(extent[0][0]) - x0) || Math.max(0, transform.invertX(extent[1][0]) - x1),
+					dy = Math.min(0, transform.invertY(extent[0][1]) - y0) || Math.max(0, transform.invertY(extent[1][1]) - y1);
+				return dx || dy ? transform.translate(dx, dy) : transform;
+			  }
+
+			  function centroid(extent) {
+				return [(+extent[0][0] + +extent[1][0]) / 2, (+extent[0][1] + +extent[1][1]) / 2];
+			  }
+
+			  function schedule(transition$$1, transform, center) {
+				transition$$1
+					.on("start.zoom", function() { gesture(this, arguments).start(); })
+					.on("interrupt.zoom end.zoom", function() { gesture(this, arguments).end(); })
+					.tween("zoom", function() {
+					  var that = this,
+						  args = arguments,
+						  g = gesture(that, args),
+						  e = extent.apply(that, args),
+						  p = center || centroid(e),
+						  w = Math.max(e[1][0] - e[0][0], e[1][1] - e[0][1]),
+						  a = that.__zoom,
+						  b = typeof transform === "function" ? transform.apply(that, args) : transform,
+						  i = interpolateZoom(a.invert(p).concat(w / a.k), b.invert(p).concat(w / b.k));
+					  return function(t) {
+						if (t === 1) t = b; // Avoid rounding error on end.
+						else { var l = i(t), k = w / l[2]; t = new Transform(k, p[0] - l[0] * k, p[1] - l[1] * k); }
+						g.zoom(null, t);
+					  };
+					});
+			  }
+
+			  function gesture(that, args) {
+				for (var i = 0, n = gestures.length, g; i < n; ++i) {
+				  if ((g = gestures[i]).that === that) {
+					return g;
+				  }
+				}
+				return new Gesture(that, args);
+			  }
+
+			  function Gesture(that, args) {
+				this.that = that;
+				this.args = args;
+				this.index = -1;
+				this.active = 0;
+				this.extent = extent.apply(that, args);
+			  }
+
+			  Gesture.prototype = {
+				start: function() {
+				  if (++this.active === 1) {
+					this.index = gestures.push(this) - 1;
+					this.emit("start");
+				  }
+				  return this;
+				},
+				zoom: function(key, transform) {
+				  if (this.mouse && key !== "mouse") this.mouse[1] = transform.invert(this.mouse[0]);
+				  if (this.touch0 && key !== "touch") this.touch0[1] = transform.invert(this.touch0[0]);
+				  if (this.touch1 && key !== "touch") this.touch1[1] = transform.invert(this.touch1[0]);
+				  this.that.__zoom = transform;
+				  this.emit("zoom");
+				  return this;
+				},
+				end: function() {
+				  if (--this.active === 0) {
+					gestures.splice(this.index, 1);
+					this.index = -1;
+					this.emit("end");
+				  }
+				  return this;
+				},
+				emit: function(type) {
+				  customEvent(new ZoomEvent(zoom, type, this.that.__zoom), listeners.apply, listeners, [type, this.that, this.args]);
+				}
+			  };
+
+			  function wheeled() {
+				if (!filter.apply(this, arguments)) return;
+				var g = gesture(this, arguments),
+					t = this.__zoom,
+					k = Math.max(k0, Math.min(k1, t.k * Math.pow(2, -exports.event.deltaY * (exports.event.deltaMode ? 120 : 1) / 500))),
+					p = mouse(this);
+
+				// If the mouse is in the same location as before, reuse it.
+				// If there were recent wheel events, reset the wheel idle timeout.
+				if (g.wheel) {
+				  if (g.mouse[0][0] !== p[0] || g.mouse[0][1] !== p[1]) {
+					g.mouse[1] = t.invert(g.mouse[0] = p);
+				  }
+				  clearTimeout(g.wheel);
+				}
+
+				// If this wheel event won’t trigger a transform change, ignore it.
+				else if (t.k === k) return;
+
+				// Otherwise, capture the mouse point and location at the start.
+				else {
+				  g.mouse = [p, t.invert(p)];
+				  interrupt(this);
+				  g.start();
+				}
+
+				noevent$1();
+				g.wheel = setTimeout(wheelidled, wheelDelay);
+				g.zoom("mouse", constrain(translate(scale(t, k), g.mouse[0], g.mouse[1]), g.extent));
+
+				function wheelidled() {
+				  g.wheel = null;
+				  g.end();
+				}
+			  }
+
+			  function mousedowned() {
+				if (touchending || !filter.apply(this, arguments)) return;
+				var g = gesture(this, arguments),
+					v = select(exports.event.view).on("mousemove.zoom", mousemoved, true).on("mouseup.zoom", mouseupped, true),
+					p = mouse(this);
+
+				dragDisable(exports.event.view);
+				nopropagation$1();
+				g.mouse = [p, this.__zoom.invert(p)];
+				interrupt(this);
+				g.start();
+
+				function mousemoved() {
+				  noevent$1();
+				  g.moved = true;
+				  g.zoom("mouse", constrain(translate(g.that.__zoom, g.mouse[0] = mouse(g.that), g.mouse[1]), g.extent));
+				}
+
+				function mouseupped() {
+				  v.on("mousemove.zoom mouseup.zoom", null);
+				  yesdrag(exports.event.view, g.moved);
+				  noevent$1();
+				  g.end();
+				}
+			  }
+
+			  function dblclicked() {
+				if (!filter.apply(this, arguments)) return;
+				var t0 = this.__zoom,
+					p0 = mouse(this),
+					p1 = t0.invert(p0),
+					k1 = t0.k * (exports.event.shiftKey ? 0.5 : 2),
+					t1 = constrain(translate(scale(t0, k1), p0, p1), extent.apply(this, arguments));
+
+				noevent$1();
+				if (duration > 0) select(this).transition().duration(duration).call(schedule, t1, p0);
+				else select(this).call(zoom.transform, t1);
+			  }
+
+			  function touchstarted() {
+				if (!filter.apply(this, arguments)) return;
+				var g = gesture(this, arguments),
+					touches$$1 = exports.event.changedTouches,
+					n = touches$$1.length, i, t, p;
+
+				nopropagation$1();
+				for (i = 0; i < n; ++i) {
+				  t = touches$$1[i], p = touch(this, touches$$1, t.identifier);
+				  p = [p, this.__zoom.invert(p), t.identifier];
+				  if (!g.touch0) g.touch0 = p;
+				  else if (!g.touch1) g.touch1 = p;
+				}
+				if (touchstarting) {
+				  touchstarting = clearTimeout(touchstarting);
+				  if (!g.touch1) return g.end(), dblclicked.apply(this, arguments);
+				}
+				if (exports.event.touches.length === n) {
+				  touchstarting = setTimeout(function() { touchstarting = null; }, touchDelay);
+				  interrupt(this);
+				  g.start();
+				}
+			  }
+
+			  function touchmoved() {
+				var g = gesture(this, arguments),
+					touches$$1 = exports.event.changedTouches,
+					n = touches$$1.length, i, t, p, l;
+
+				noevent$1();
+				if (touchstarting) touchstarting = clearTimeout(touchstarting);
+				for (i = 0; i < n; ++i) {
+				  t = touches$$1[i], p = touch(this, touches$$1, t.identifier);
+				  if (g.touch0 && g.touch0[2] === t.identifier) g.touch0[0] = p;
+				  else if (g.touch1 && g.touch1[2] === t.identifier) g.touch1[0] = p;
+				}
+				t = g.that.__zoom;
+				if (g.touch1) {
+				  var p0 = g.touch0[0], l0 = g.touch0[1],
+					  p1 = g.touch1[0], l1 = g.touch1[1],
+					  dp = (dp = p1[0] - p0[0]) * dp + (dp = p1[1] - p0[1]) * dp,
+					  dl = (dl = l1[0] - l0[0]) * dl + (dl = l1[1] - l0[1]) * dl;
+				  t = scale(t, Math.sqrt(dp / dl));
+				  p = [(p0[0] + p1[0]) / 2, (p0[1] + p1[1]) / 2];
+				  l = [(l0[0] + l1[0]) / 2, (l0[1] + l1[1]) / 2];
+				}
+				else if (g.touch0) p = g.touch0[0], l = g.touch0[1];
+				else return;
+				g.zoom("touch", constrain(translate(t, p, l), g.extent));
+			  }
+
+			  function touchended() {
+				var g = gesture(this, arguments),
+					touches$$1 = exports.event.changedTouches,
+					n = touches$$1.length, i, t;
+
+				nopropagation$1();
+				if (touchending) clearTimeout(touchending);
+				touchending = setTimeout(function() { touchending = null; }, touchDelay);
+				for (i = 0; i < n; ++i) {
+				  t = touches$$1[i];
+				  if (g.touch0 && g.touch0[2] === t.identifier) delete g.touch0;
+				  else if (g.touch1 && g.touch1[2] === t.identifier) delete g.touch1;
+				}
+				if (g.touch1 && !g.touch0) g.touch0 = g.touch1, delete g.touch1;
+				if (!g.touch0) g.end();
+			  }
+
+			  zoom.filter = function(_) {
+				return arguments.length ? (filter = typeof _ === "function" ? _ : constant$10(!!_), zoom) : filter;
+			  };
+
+			  zoom.extent = function(_) {
+				return arguments.length ? (extent = typeof _ === "function" ? _ : constant$10([[+_[0][0], +_[0][1]], [+_[1][0], +_[1][1]]]), zoom) : extent;
+			  };
+
+			  zoom.scaleExtent = function(_) {
+				return arguments.length ? (k0 = +_[0], k1 = +_[1], zoom) : [k0, k1];
+			  };
+
+			  zoom.translateExtent = function(_) {
+				return arguments.length ? (x0 = +_[0][0], x1 = +_[1][0], y0 = +_[0][1], y1 = +_[1][1], zoom) : [[x0, y0], [x1, y1]];
+			  };
+
+			  zoom.duration = function(_) {
+				return arguments.length ? (duration = +_, zoom) : duration;
+			  };
+
+			  zoom.on = function() {
+				var value = listeners.on.apply(listeners, arguments);
+				return value === listeners ? zoom : value;
+			  };
+
+			  return zoom;
+			};
+
+			var constant$11 = function(x) {
+			  return function() {
+				return x;
+			  };
+			};
+
+			var BrushEvent = function(target, type, selection) {
+			  this.target = target;
+			  this.type = type;
+			  this.selection = selection;
+			};
+
+			function nopropagation$2() {
+			  exports.event.stopImmediatePropagation();
+			}
+
+			var noevent$2 = function() {
+			  exports.event.preventDefault();
+			  exports.event.stopImmediatePropagation();
+			};
+
+			var MODE_DRAG = {name: "drag"};
+			var MODE_SPACE = {name: "space"};
+			var MODE_HANDLE = {name: "handle"};
+			var MODE_CENTER = {name: "center"};
+
+			var X = {
+			  name: "x",
+			  handles: ["e", "w"].map(type$1),
+			  input: function(x, e) { return x && [[x[0], e[0][1]], [x[1], e[1][1]]]; },
+			  output: function(xy) { return xy && [xy[0][0], xy[1][0]]; }
+			};
+
+			var Y = {
+			  name: "y",
+			  handles: ["n", "s"].map(type$1),
+			  input: function(y, e) { return y && [[e[0][0], y[0]], [e[1][0], y[1]]]; },
+			  output: function(xy) { return xy && [xy[0][1], xy[1][1]]; }
+			};
+
+			var XY = {
+			  name: "xy",
+			  handles: ["n", "e", "s", "w", "nw", "ne", "se", "sw"].map(type$1),
+			  input: function(xy) { return xy; },
+			  output: function(xy) { return xy; }
+			};
+
+			var cursors = {
+			  overlay: "crosshair",
+			  selection: "move",
+			  n: "ns-resize",
+			  e: "ew-resize",
+			  s: "ns-resize",
+			  w: "ew-resize",
+			  nw: "nwse-resize",
+			  ne: "nesw-resize",
+			  se: "nwse-resize",
+			  sw: "nesw-resize"
+			};
+
+			var flipX = {
+			  e: "w",
+			  w: "e",
+			  nw: "ne",
+			  ne: "nw",
+			  se: "sw",
+			  sw: "se"
+			};
+
+			var flipY = {
+			  n: "s",
+			  s: "n",
+			  nw: "sw",
+			  ne: "se",
+			  se: "ne",
+			  sw: "nw"
+			};
+
+			var signsX = {
+			  overlay: +1,
+			  selection: +1,
+			  n: null,
+			  e: +1,
+			  s: null,
+			  w: -1,
+			  nw: -1,
+			  ne: +1,
+			  se: +1,
+			  sw: -1
+			};
+
+			var signsY = {
+			  overlay: +1,
+			  selection: +1,
+			  n: -1,
+			  e: null,
+			  s: +1,
+			  w: null,
+			  nw: -1,
+			  ne: -1,
+			  se: +1,
+			  sw: +1
+			};
+
+			function type$1(t) {
+			  return {type: t};
+			}
+
+			// Ignore right-click, since that should open the context menu.
+			function defaultFilter$2() {
+			  return !exports.event.button;
+			}
+
+			function defaultExtent$1() {
+			  var svg = this.ownerSVGElement || this;
+			  return [[0, 0], [svg.width.baseVal.value, svg.height.baseVal.value]];
+			}
+
+			// Like d3.local, but with the name “__brush” rather than auto-generated.
+			function local$1(node) {
+			  while (!node.__brush) if (!(node = node.parentNode)) return;
+			  return node.__brush;
+			}
+
+			function empty$1(extent) {
+			  return extent[0][0] === extent[1][0]
+				  || extent[0][1] === extent[1][1];
+			}
+
+			function brushSelection(node) {
+			  var state = node.__brush;
+			  return state ? state.dim.output(state.selection) : null;
+			}
+
+			function brushX() {
+			  return brush$1(X);
+			}
+
+			function brushY() {
+			  return brush$1(Y);
+			}
+
+			var brush = function() {
+			  return brush$1(XY);
+			};
+
+			function brush$1(dim) {
+			  var extent = defaultExtent$1,
+				  filter = defaultFilter$2,
+				  listeners = dispatch(brush, "start", "brush", "end"),
+				  handleSize = 6,
+				  touchending;
+
+			  function brush(group) {
+				var overlay = group
+					.property("__brush", initialize)
+				  .selectAll(".overlay")
+				  .data([type$1("overlay")]);
+
+				overlay.enter().append("rect")
+					.attr("class", "overlay")
+					.attr("pointer-events", "all")
+					.attr("cursor", cursors.overlay)
+				  .merge(overlay)
+					.each(function() {
+					  var extent = local$1(this).extent;
+					  select(this)
+						  .attr("x", extent[0][0])
+						  .attr("y", extent[0][1])
+						  .attr("width", extent[1][0] - extent[0][0])
+						  .attr("height", extent[1][1] - extent[0][1]);
+					});
+
+				group.selectAll(".selection")
+				  .data([type$1("selection")])
+				  .enter().append("rect")
+					.attr("class", "selection")
+					.attr("cursor", cursors.selection)
+					.attr("fill", "#777")
+					.attr("fill-opacity", 0.3)
+					.attr("stroke", "#fff")
+					.attr("shape-rendering", "crispEdges");
+
+				var handle = group.selectAll(".handle")
+				  .data(dim.handles, function(d) { return d.type; });
+
+				handle.exit().remove();
+
+				handle.enter().append("rect")
+					.attr("class", function(d) { return "handle handle--" + d.type; })
+					.attr("cursor", function(d) { return cursors[d.type]; });
+
+				group
+					.each(redraw)
+					.attr("fill", "none")
+					.attr("pointer-events", "all")
+					.style("-webkit-tap-highlight-color", "rgba(0,0,0,0)")
+					.on("mousedown.brush touchstart.brush", started);
+			  }
+
+			  brush.move = function(group, selection$$1) {
+				if (group.selection) {
+				  group
+					  .on("start.brush", function() { emitter(this, arguments).beforestart().start(); })
+					  .on("interrupt.brush end.brush", function() { emitter(this, arguments).end(); })
+					  .tween("brush", function() {
+						var that = this,
+							state = that.__brush,
+							emit = emitter(that, arguments),
+							selection0 = state.selection,
+							selection1 = dim.input(typeof selection$$1 === "function" ? selection$$1.apply(this, arguments) : selection$$1, state.extent),
+							i = interpolate(selection0, selection1);
+
+						function tween(t) {
+						  state.selection = t === 1 && empty$1(selection1) ? null : i(t);
+						  redraw.call(that);
+						  emit.brush();
+						}
+
+						return selection0 && selection1 ? tween : tween(1);
+					  });
+				} else {
+				  group
+					  .each(function() {
+						var that = this,
+							args = arguments,
+							state = that.__brush,
+							selection1 = dim.input(typeof selection$$1 === "function" ? selection$$1.apply(that, args) : selection$$1, state.extent),
+							emit = emitter(that, args).beforestart();
+
+						interrupt(that);
+						state.selection = selection1 == null || empty$1(selection1) ? null : selection1;
+						redraw.call(that);
+						emit.start().brush().end();
+					  });
+				}
+			  };
+
+			  function redraw() {
+				var group = select(this),
+					selection$$1 = local$1(this).selection;
+
+				if (selection$$1) {
+				  group.selectAll(".selection")
+					  .style("display", null)
+					  .attr("x", selection$$1[0][0])
+					  .attr("y", selection$$1[0][1])
+					  .attr("width", selection$$1[1][0] - selection$$1[0][0])
+					  .attr("height", selection$$1[1][1] - selection$$1[0][1]);
+
+				  group.selectAll(".handle")
+					  .style("display", null)
+					  .attr("x", function(d) { return d.type[d.type.length - 1] === "e" ? selection$$1[1][0] - handleSize / 2 : selection$$1[0][0] - handleSize / 2; })
+					  .attr("y", function(d) { return d.type[0] === "s" ? selection$$1[1][1] - handleSize / 2 : selection$$1[0][1] - handleSize / 2; })
+					  .attr("width", function(d) { return d.type === "n" || d.type === "s" ? selection$$1[1][0] - selection$$1[0][0] + handleSize : handleSize; })
+					  .attr("height", function(d) { return d.type === "e" || d.type === "w" ? selection$$1[1][1] - selection$$1[0][1] + handleSize : handleSize; });
+				}
+
+				else {
+				  group.selectAll(".selection,.handle")
+					  .style("display", "none")
+					  .attr("x", null)
+					  .attr("y", null)
+					  .attr("width", null)
+					  .attr("height", null);
+				}
+			  }
+
+			  function emitter(that, args) {
+				return that.__brush.emitter || new Emitter(that, args);
+			  }
+
+			  function Emitter(that, args) {
+				this.that = that;
+				this.args = args;
+				this.state = that.__brush;
+				this.active = 0;
+			  }
+
+			  Emitter.prototype = {
+				beforestart: function() {
+				  if (++this.active === 1) this.state.emitter = this, this.starting = true;
+				  return this;
+				},
+				start: function() {
+				  if (this.starting) this.starting = false, this.emit("start");
+				  return this;
+				},
+				brush: function() {
+				  this.emit("brush");
+				  return this;
+				},
+				end: function() {
+				  if (--this.active === 0) delete this.state.emitter, this.emit("end");
+				  return this;
+				},
+				emit: function(type) {
+				  customEvent(new BrushEvent(brush, type, dim.output(this.state.selection)), listeners.apply, listeners, [type, this.that, this.args]);
+				}
+			  };
+
+			  function started() {
+				if (exports.event.touches) { if (exports.event.changedTouches.length < exports.event.touches.length) return noevent$2(); }
+				else if (touchending) return;
+				if (!filter.apply(this, arguments)) return;
+
+				var that = this,
+					type = exports.event.target.__data__.type,
+					mode = (exports.event.metaKey ? type = "overlay" : type) === "selection" ? MODE_DRAG : (exports.event.altKey ? MODE_CENTER : MODE_HANDLE),
+					signX = dim === Y ? null : signsX[type],
+					signY = dim === X ? null : signsY[type],
+					state = local$1(that),
+					extent = state.extent,
+					selection$$1 = state.selection,
+					W = extent[0][0], w0, w1,
+					N = extent[0][1], n0, n1,
+					E = extent[1][0], e0, e1,
+					S = extent[1][1], s0, s1,
+					dx,
+					dy,
+					moving,
+					shifting = signX && signY && exports.event.shiftKey,
+					lockX,
+					lockY,
+					point0 = mouse(that),
+					point = point0,
+					emit = emitter(that, arguments).beforestart();
+
+				if (type === "overlay") {
+				  state.selection = selection$$1 = [
+					[w0 = dim === Y ? W : point0[0], n0 = dim === X ? N : point0[1]],
+					[e0 = dim === Y ? E : w0, s0 = dim === X ? S : n0]
+				  ];
+				} else {
+				  w0 = selection$$1[0][0];
+				  n0 = selection$$1[0][1];
+				  e0 = selection$$1[1][0];
+				  s0 = selection$$1[1][1];
+				}
+
+				w1 = w0;
+				n1 = n0;
+				e1 = e0;
+				s1 = s0;
+
+				var group = select(that)
+					.attr("pointer-events", "none");
+
+				var overlay = group.selectAll(".overlay")
+					.attr("cursor", cursors[type]);
+
+				if (exports.event.touches) {
+				  group
+					  .on("touchmove.brush", moved, true)
+					  .on("touchend.brush touchcancel.brush", ended, true);
+				} else {
+				  var view = select(exports.event.view)
+					  .on("keydown.brush", keydowned, true)
+					  .on("keyup.brush", keyupped, true)
+					  .on("mousemove.brush", moved, true)
+					  .on("mouseup.brush", ended, true);
+
+				  dragDisable(exports.event.view);
+				}
+
+				nopropagation$2();
+				interrupt(that);
+				redraw.call(that);
+				emit.start();
+
+				function moved() {
+				  var point1 = mouse(that);
+				  if (shifting && !lockX && !lockY) {
+					if (Math.abs(point1[0] - point[0]) > Math.abs(point1[1] - point[1])) lockY = true;
+					else lockX = true;
+				  }
+				  point = point1;
+				  moving = true;
+				  noevent$2();
+				  move();
+				}
+
+				function move() {
+				  var t;
+
+				  dx = point[0] - point0[0];
+				  dy = point[1] - point0[1];
+
+				  switch (mode) {
+					case MODE_SPACE:
+					case MODE_DRAG: {
+					  if (signX) dx = Math.max(W - w0, Math.min(E - e0, dx)), w1 = w0 + dx, e1 = e0 + dx;
+					  if (signY) dy = Math.max(N - n0, Math.min(S - s0, dy)), n1 = n0 + dy, s1 = s0 + dy;
+					  break;
+					}
+					case MODE_HANDLE: {
+					  if (signX < 0) dx = Math.max(W - w0, Math.min(E - w0, dx)), w1 = w0 + dx, e1 = e0;
+					  else if (signX > 0) dx = Math.max(W - e0, Math.min(E - e0, dx)), w1 = w0, e1 = e0 + dx;
+					  if (signY < 0) dy = Math.max(N - n0, Math.min(S - n0, dy)), n1 = n0 + dy, s1 = s0;
+					  else if (signY > 0) dy = Math.max(N - s0, Math.min(S - s0, dy)), n1 = n0, s1 = s0 + dy;
+					  break;
+					}
+					case MODE_CENTER: {
+					  if (signX) w1 = Math.max(W, Math.min(E, w0 - dx * signX)), e1 = Math.max(W, Math.min(E, e0 + dx * signX));
+					  if (signY) n1 = Math.max(N, Math.min(S, n0 - dy * signY)), s1 = Math.max(N, Math.min(S, s0 + dy * signY));
+					  break;
+					}
+				  }
+
+				  if (e1 < w1) {
+					signX *= -1;
+					t = w0, w0 = e0, e0 = t;
+					t = w1, w1 = e1, e1 = t;
+					if (type in flipX) overlay.attr("cursor", cursors[type = flipX[type]]);
+				  }
+
+				  if (s1 < n1) {
+					signY *= -1;
+					t = n0, n0 = s0, s0 = t;
+					t = n1, n1 = s1, s1 = t;
+					if (type in flipY) overlay.attr("cursor", cursors[type = flipY[type]]);
+				  }
+
+				  if (state.selection) selection$$1 = state.selection; // May be set by brush.move!
+				  if (lockX) w1 = selection$$1[0][0], e1 = selection$$1[1][0];
+				  if (lockY) n1 = selection$$1[0][1], s1 = selection$$1[1][1];
+
+				  if (selection$$1[0][0] !== w1
+					  || selection$$1[0][1] !== n1
+					  || selection$$1[1][0] !== e1
+					  || selection$$1[1][1] !== s1) {
+					state.selection = [[w1, n1], [e1, s1]];
+					redraw.call(that);
+					emit.brush();
+				  }
+				}
+
+				function ended() {
+				  nopropagation$2();
+				  if (exports.event.touches) {
+					if (exports.event.touches.length) return;
+					if (touchending) clearTimeout(touchending);
+					touchending = setTimeout(function() { touchending = null; }, 500); // Ghost clicks are delayed!
+					group.on("touchmove.brush touchend.brush touchcancel.brush", null);
+				  } else {
+					yesdrag(exports.event.view, moving);
+					view.on("keydown.brush keyup.brush mousemove.brush mouseup.brush", null);
+				  }
+				  group.attr("pointer-events", "all");
+				  overlay.attr("cursor", cursors.overlay);
+				  if (state.selection) selection$$1 = state.selection; // May be set by brush.move (on start)!
+				  if (empty$1(selection$$1)) state.selection = null, redraw.call(that);
+				  emit.end();
+				}
+
+				function keydowned() {
+				  switch (exports.event.keyCode) {
+					case 16: { // SHIFT
+					  shifting = signX && signY;
+					  break;
+					}
+					case 18: { // ALT
+					  if (mode === MODE_HANDLE) {
+						if (signX) e0 = e1 - dx * signX, w0 = w1 + dx * signX;
+						if (signY) s0 = s1 - dy * signY, n0 = n1 + dy * signY;
+						mode = MODE_CENTER;
+						move();
+					  }
+					  break;
+					}
+					case 32: { // SPACE; takes priority over ALT
+					  if (mode === MODE_HANDLE || mode === MODE_CENTER) {
+						if (signX < 0) e0 = e1 - dx; else if (signX > 0) w0 = w1 - dx;
+						if (signY < 0) s0 = s1 - dy; else if (signY > 0) n0 = n1 - dy;
+						mode = MODE_SPACE;
+						overlay.attr("cursor", cursors.selection);
+						move();
+					  }
+					  break;
+					}
+					default: return;
+				  }
+				  noevent$2();
+				}
+
+				function keyupped() {
+				  switch (exports.event.keyCode) {
+					case 16: { // SHIFT
+					  if (shifting) {
+						lockX = lockY = shifting = false;
+						move();
+					  }
+					  break;
+					}
+					case 18: { // ALT
+					  if (mode === MODE_CENTER) {
+						if (signX < 0) e0 = e1; else if (signX > 0) w0 = w1;
+						if (signY < 0) s0 = s1; else if (signY > 0) n0 = n1;
+						mode = MODE_HANDLE;
+						move();
+					  }
+					  break;
+					}
+					case 32: { // SPACE
+					  if (mode === MODE_SPACE) {
+						if (exports.event.altKey) {
+						  if (signX) e0 = e1 - dx * signX, w0 = w1 + dx * signX;
+						  if (signY) s0 = s1 - dy * signY, n0 = n1 + dy * signY;
+						  mode = MODE_CENTER;
+						} else {
+						  if (signX < 0) e0 = e1; else if (signX > 0) w0 = w1;
+						  if (signY < 0) s0 = s1; else if (signY > 0) n0 = n1;
+						  mode = MODE_HANDLE;
+						}
+						overlay.attr("cursor", cursors[type]);
+						move();
+					  }
+					  break;
+					}
+					default: return;
+				  }
+				  noevent$2();
+				}
+			  }
+
+			  function initialize() {
+				var state = this.__brush || {selection: null};
+				state.extent = extent.apply(this, arguments);
+				state.dim = dim;
+				return state;
+			  }
+
+			  brush.extent = function(_) {
+				return arguments.length ? (extent = typeof _ === "function" ? _ : constant$11([[+_[0][0], +_[0][1]], [+_[1][0], +_[1][1]]]), brush) : extent;
+			  };
+
+			  brush.filter = function(_) {
+				return arguments.length ? (filter = typeof _ === "function" ? _ : constant$11(!!_), brush) : filter;
+			  };
+
+			  brush.handleSize = function(_) {
+				return arguments.length ? (handleSize = +_, brush) : handleSize;
+			  };
+
+			  brush.on = function() {
+				var value = listeners.on.apply(listeners, arguments);
+				return value === listeners ? brush : value;
+			  };
+
+			  return brush;
+			}
+
+			var cos = Math.cos;
+			var sin = Math.sin;
+			var pi$3 = Math.PI;
+			var halfPi$2 = pi$3 / 2;
+			var tau$3 = pi$3 * 2;
+			var max$1 = Math.max;
+
+			function compareValue(compare) {
+			  return function(a, b) {
+				return compare(
+				  a.source.value + a.target.value,
+				  b.source.value + b.target.value
+				);
+			  };
+			}
+
+			var chord = function() {
+			  var padAngle = 0,
+				  sortGroups = null,
+				  sortSubgroups = null,
+				  sortChords = null;
+
+			  function chord(matrix) {
+				var n = matrix.length,
+					groupSums = [],
+					groupIndex = range(n),
+					subgroupIndex = [],
+					chords = [],
+					groups = chords.groups = new Array(n),
+					subgroups = new Array(n * n),
+					k,
+					x,
+					x0,
+					dx,
+					i,
+					j;
+
+				// Compute the sum.
+				k = 0, i = -1; while (++i < n) {
+				  x = 0, j = -1; while (++j < n) {
+					x += matrix[i][j];
+				  }
+				  groupSums.push(x);
+				  subgroupIndex.push(range(n));
+				  k += x;
+				}
+
+				// Sort groups…
+				if (sortGroups) groupIndex.sort(function(a, b) {
+				  return sortGroups(groupSums[a], groupSums[b]);
+				});
+
+				// Sort subgroups…
+				if (sortSubgroups) subgroupIndex.forEach(function(d, i) {
+				  d.sort(function(a, b) {
+					return sortSubgroups(matrix[i][a], matrix[i][b]);
+				  });
+				});
+
+				// Convert the sum to scaling factor for [0, 2pi].
+				// TODO Allow start and end angle to be specified?
+				// TODO Allow padding to be specified as percentage?
+				k = max$1(0, tau$3 - padAngle * n) / k;
+				dx = k ? padAngle : tau$3 / n;
+
+				// Compute the start and end angle for each group and subgroup.
+				// Note: Opera has a bug reordering object literal properties!
+				x = 0, i = -1; while (++i < n) {
+				  x0 = x, j = -1; while (++j < n) {
+					var di = groupIndex[i],
+						dj = subgroupIndex[di][j],
+						v = matrix[di][dj],
+						a0 = x,
+						a1 = x += v * k;
+					subgroups[dj * n + di] = {
+					  index: di,
+					  subindex: dj,
+					  startAngle: a0,
+					  endAngle: a1,
+					  value: v
+					};
+				  }
+				  groups[di] = {
+					index: di,
+					startAngle: x0,
+					endAngle: x,
+					value: groupSums[di]
+				  };
+				  x += dx;
+				}
+
+				// Generate chords for each (non-empty) subgroup-subgroup link.
+				i = -1; while (++i < n) {
+				  j = i - 1; while (++j < n) {
+					var source = subgroups[j * n + i],
+						target = subgroups[i * n + j];
+					if (source.value || target.value) {
+					  chords.push(source.value < target.value
+						  ? {source: target, target: source}
+						  : {source: source, target: target});
+					}
+				  }
+				}
+
+				return sortChords ? chords.sort(sortChords) : chords;
+			  }
+
+			  chord.padAngle = function(_) {
+				return arguments.length ? (padAngle = max$1(0, _), chord) : padAngle;
+			  };
+
+			  chord.sortGroups = function(_) {
+				return arguments.length ? (sortGroups = _, chord) : sortGroups;
+			  };
+
+			  chord.sortSubgroups = function(_) {
+				return arguments.length ? (sortSubgroups = _, chord) : sortSubgroups;
+			  };
+
+			  chord.sortChords = function(_) {
+				return arguments.length ? (_ == null ? sortChords = null : (sortChords = compareValue(_))._ = _, chord) : sortChords && sortChords._;
+			  };
+
+			  return chord;
+			};
+
+			var slice$5 = Array.prototype.slice;
+
+			var constant$12 = function(x) {
+			  return function() {
+				return x;
+			  };
+			};
+
+			function defaultSource(d) {
+			  return d.source;
+			}
+
+			function defaultTarget(d) {
+			  return d.target;
+			}
+
+			function defaultRadius$1(d) {
+			  return d.radius;
+			}
+
+			function defaultStartAngle(d) {
+			  return d.startAngle;
+			}
+
+			function defaultEndAngle(d) {
+			  return d.endAngle;
+			}
+
+			var ribbon = function() {
+			  var source = defaultSource,
+				  target = defaultTarget,
+				  radius = defaultRadius$1,
+				  startAngle = defaultStartAngle,
+				  endAngle = defaultEndAngle,
+				  context = null;
+
+			  function ribbon() {
+				var buffer,
+					argv = slice$5.call(arguments),
+					s = source.apply(this, argv),
+					t = target.apply(this, argv),
+					sr = +radius.apply(this, (argv[0] = s, argv)),
+					sa0 = startAngle.apply(this, argv) - halfPi$2,
+					sa1 = endAngle.apply(this, argv) - halfPi$2,
+					sx0 = sr * cos(sa0),
+					sy0 = sr * sin(sa0),
+					tr = +radius.apply(this, (argv[0] = t, argv)),
+					ta0 = startAngle.apply(this, argv) - halfPi$2,
+					ta1 = endAngle.apply(this, argv) - halfPi$2;
+
+				if (!context) context = buffer = path();
+
+				context.moveTo(sx0, sy0);
+				context.arc(0, 0, sr, sa0, sa1);
+				if (sa0 !== ta0 || sa1 !== ta1) { // TODO sr !== tr?
+				  context.quadraticCurveTo(0, 0, tr * cos(ta0), tr * sin(ta0));
+				  context.arc(0, 0, tr, ta0, ta1);
+				}
+				context.quadraticCurveTo(0, 0, sx0, sy0);
+				context.closePath();
+
+				if (buffer) return context = null, buffer + "" || null;
+			  }
+
+			  ribbon.radius = function(_) {
+				return arguments.length ? (radius = typeof _ === "function" ? _ : constant$12(+_), ribbon) : radius;
+			  };
+
+			  ribbon.startAngle = function(_) {
+				return arguments.length ? (startAngle = typeof _ === "function" ? _ : constant$12(+_), ribbon) : startAngle;
+			  };
+
+			  ribbon.endAngle = function(_) {
+				return arguments.length ? (endAngle = typeof _ === "function" ? _ : constant$12(+_), ribbon) : endAngle;
+			  };
+
+			  ribbon.source = function(_) {
+				return arguments.length ? (source = _, ribbon) : source;
+			  };
+
+			  ribbon.target = function(_) {
+				return arguments.length ? (target = _, ribbon) : target;
+			  };
+
+			  ribbon.context = function(_) {
+				return arguments.length ? ((context = _ == null ? null : _), ribbon) : context;
+			  };
+
+			  return ribbon;
+			};
+
+			// Adds floating point numbers with twice the normal precision.
+			// Reference: J. R. Shewchuk, Adaptive Precision Floating-Point Arithmetic and
+			// Fast Robust Geometric Predicates, Discrete & Computational Geometry 18(3)
+			// 305–363 (1997).
+			// Code adapted from GeographicLib by Charles F. F. Karney,
+			// http://geographiclib.sourceforge.net/
+
+			var adder = function() {
+			  return new Adder;
+			};
+
+			function Adder() {
+			  this.reset();
+			}
+
+			Adder.prototype = {
+			  constructor: Adder,
+			  reset: function() {
+				this.s = // rounded value
+				this.t = 0; // exact error
+			  },
+			  add: function(y) {
+				add$1(temp, y, this.t);
+				add$1(this, temp.s, this.s);
+				if (this.s) this.t += temp.t;
+				else this.s = temp.t;
+			  },
+			  valueOf: function() {
+				return this.s;
+			  }
+			};
+
+			var temp = new Adder;
+
+			function add$1(adder, a, b) {
+			  var x = adder.s = a + b,
+				  bv = x - a,
+				  av = x - bv;
+			  adder.t = (a - av) + (b - bv);
+			}
+
+			var epsilon$4 = 1e-6;
+			var epsilon2$2 = 1e-12;
+			var pi$4 = Math.PI;
+			var halfPi$3 = pi$4 / 2;
+			var quarterPi = pi$4 / 4;
+			var tau$4 = pi$4 * 2;
+
+			var degrees$1 = 180 / pi$4;
+			var radians = pi$4 / 180;
+
+			var abs = Math.abs;
+			var atan = Math.atan;
+			var atan2 = Math.atan2;
+			var cos$1 = Math.cos;
+			var ceil = Math.ceil;
+			var exp = Math.exp;
+
+			var log$1 = Math.log;
+			var pow$1 = Math.pow;
+			var sin$1 = Math.sin;
+			var sign$1 = Math.sign || function(x) { return x > 0 ? 1 : x < 0 ? -1 : 0; };
+			var sqrt$1 = Math.sqrt;
+			var tan = Math.tan;
+
+			function acos(x) {
+			  return x > 1 ? 0 : x < -1 ? pi$4 : Math.acos(x);
+			}
+
+			function asin$1(x) {
+			  return x > 1 ? halfPi$3 : x < -1 ? -halfPi$3 : Math.asin(x);
+			}
+
+			function haversin(x) {
+			  return (x = sin$1(x / 2)) * x;
+			}
+
+			function noop$2() {}
+
+			function streamGeometry(geometry, stream) {
+			  if (geometry && streamGeometryType.hasOwnProperty(geometry.type)) {
+				streamGeometryType[geometry.type](geometry, stream);
+			  }
+			}
+
+			var streamObjectType = {
+			  Feature: function(feature, stream) {
+				streamGeometry(feature.geometry, stream);
+			  },
+			  FeatureCollection: function(object, stream) {
+				var features = object.features, i = -1, n = features.length;
+				while (++i < n) streamGeometry(features[i].geometry, stream);
+			  }
+			};
+
+			var streamGeometryType = {
+			  Sphere: function(object, stream) {
+				stream.sphere();
+			  },
+			  Point: function(object, stream) {
+				object = object.coordinates;
+				stream.point(object[0], object[1], object[2]);
+			  },
+			  MultiPoint: function(object, stream) {
+				var coordinates = object.coordinates, i = -1, n = coordinates.length;
+				while (++i < n) object = coordinates[i], stream.point(object[0], object[1], object[2]);
+			  },
+			  LineString: function(object, stream) {
+				streamLine(object.coordinates, stream, 0);
+			  },
+			  MultiLineString: function(object, stream) {
+				var coordinates = object.coordinates, i = -1, n = coordinates.length;
+				while (++i < n) streamLine(coordinates[i], stream, 0);
+			  },
+			  Polygon: function(object, stream) {
+				streamPolygon(object.coordinates, stream);
+			  },
+			  MultiPolygon: function(object, stream) {
+				var coordinates = object.coordinates, i = -1, n = coordinates.length;
+				while (++i < n) streamPolygon(coordinates[i], stream);
+			  },
+			  GeometryCollection: function(object, stream) {
+				var geometries = object.geometries, i = -1, n = geometries.length;
+				while (++i < n) streamGeometry(geometries[i], stream);
+			  }
+			};
+
+			function streamLine(coordinates, stream, closed) {
+			  var i = -1, n = coordinates.length - closed, coordinate;
+			  stream.lineStart();
+			  while (++i < n) coordinate = coordinates[i], stream.point(coordinate[0], coordinate[1], coordinate[2]);
+			  stream.lineEnd();
+			}
+
+			function streamPolygon(coordinates, stream) {
+			  var i = -1, n = coordinates.length;
+			  stream.polygonStart();
+			  while (++i < n) streamLine(coordinates[i], stream, 1);
+			  stream.polygonEnd();
+			}
+
+			var geoStream = function(object, stream) {
+			  if (object && streamObjectType.hasOwnProperty(object.type)) {
+				streamObjectType[object.type](object, stream);
+			  } else {
+				streamGeometry(object, stream);
+			  }
+			};
+
+			var areaRingSum = adder();
+
+			var areaSum = adder();
+			var lambda00;
+			var phi00;
+			var lambda0;
+			var cosPhi0;
+			var sinPhi0;
+
+			var areaStream = {
+			  point: noop$2,
+			  lineStart: noop$2,
+			  lineEnd: noop$2,
+			  polygonStart: function() {
+				areaRingSum.reset();
+				areaStream.lineStart = areaRingStart;
+				areaStream.lineEnd = areaRingEnd;
+			  },
+			  polygonEnd: function() {
+				var areaRing = +areaRingSum;
+				areaSum.add(areaRing < 0 ? tau$4 + areaRing : areaRing);
+				this.lineStart = this.lineEnd = this.point = noop$2;
+			  },
+			  sphere: function() {
+				areaSum.add(tau$4);
+			  }
+			};
+
+			function areaRingStart() {
+			  areaStream.point = areaPointFirst;
+			}
+
+			function areaRingEnd() {
+			  areaPoint(lambda00, phi00);
+			}
+
+			function areaPointFirst(lambda, phi) {
+			  areaStream.point = areaPoint;
+			  lambda00 = lambda, phi00 = phi;
+			  lambda *= radians, phi *= radians;
+			  lambda0 = lambda, cosPhi0 = cos$1(phi = phi / 2 + quarterPi), sinPhi0 = sin$1(phi);
+			}
+
+			function areaPoint(lambda, phi) {
+			  lambda *= radians, phi *= radians;
+			  phi = phi / 2 + quarterPi; // half the angular distance from south pole
+
+			  // Spherical excess E for a spherical triangle with vertices: south pole,
+			  // previous point, current point.  Uses a formula derived from Cagnoli’s
+			  // theorem.  See Todhunter, Spherical Trig. (1871), Sec. 103, Eq. (2).
+			  var dLambda = lambda - lambda0,
+				  sdLambda = dLambda >= 0 ? 1 : -1,
+				  adLambda = sdLambda * dLambda,
+				  cosPhi = cos$1(phi),
+				  sinPhi = sin$1(phi),
+				  k = sinPhi0 * sinPhi,
+				  u = cosPhi0 * cosPhi + k * cos$1(adLambda),
+				  v = k * sdLambda * sin$1(adLambda);
+			  areaRingSum.add(atan2(v, u));
+
+			  // Advance the previous points.
+			  lambda0 = lambda, cosPhi0 = cosPhi, sinPhi0 = sinPhi;
+			}
+
+			var area$2 = function(object) {
+			  areaSum.reset();
+			  geoStream(object, areaStream);
+			  return areaSum * 2;
+			};
+
+			function spherical(cartesian) {
+			  return [atan2(cartesian[1], cartesian[0]), asin$1(cartesian[2])];
+			}
+
+			function cartesian(spherical) {
+			  var lambda = spherical[0], phi = spherical[1], cosPhi = cos$1(phi);
+			  return [cosPhi * cos$1(lambda), cosPhi * sin$1(lambda), sin$1(phi)];
+			}
+
+			function cartesianDot(a, b) {
+			  return a[0] * b[0] + a[1] * b[1] + a[2] * b[2];
+			}
+
+			function cartesianCross(a, b) {
+			  return [a[1] * b[2] - a[2] * b[1], a[2] * b[0] - a[0] * b[2], a[0] * b[1] - a[1] * b[0]];
+			}
+
+			// TODO return a
+			function cartesianAddInPlace(a, b) {
+			  a[0] += b[0], a[1] += b[1], a[2] += b[2];
+			}
+
+			function cartesianScale(vector, k) {
+			  return [vector[0] * k, vector[1] * k, vector[2] * k];
+			}
+
+			// TODO return d
+			function cartesianNormalizeInPlace(d) {
+			  var l = sqrt$1(d[0] * d[0] + d[1] * d[1] + d[2] * d[2]);
+			  d[0] /= l, d[1] /= l, d[2] /= l;
+			}
+
+			var lambda0$1;
+			var phi0;
+			var lambda1;
+			var phi1;
+			var lambda2;
+			var lambda00$1;
+			var phi00$1;
+			var p0;
+			var deltaSum = adder();
+			var ranges;
+			var range$1;
+
+			var boundsStream = {
+			  point: boundsPoint,
+			  lineStart: boundsLineStart,
+			  lineEnd: boundsLineEnd,
+			  polygonStart: function() {
+				boundsStream.point = boundsRingPoint;
+				boundsStream.lineStart = boundsRingStart;
+				boundsStream.lineEnd = boundsRingEnd;
+				deltaSum.reset();
+				areaStream.polygonStart();
+			  },
+			  polygonEnd: function() {
+				areaStream.polygonEnd();
+				boundsStream.point = boundsPoint;
+				boundsStream.lineStart = boundsLineStart;
+				boundsStream.lineEnd = boundsLineEnd;
+				if (areaRingSum < 0) lambda0$1 = -(lambda1 = 180), phi0 = -(phi1 = 90);
+				else if (deltaSum > epsilon$4) phi1 = 90;
+				else if (deltaSum < -epsilon$4) phi0 = -90;
+				range$1[0] = lambda0$1, range$1[1] = lambda1;
+			  }
+			};
+
+			function boundsPoint(lambda, phi) {
+			  ranges.push(range$1 = [lambda0$1 = lambda, lambda1 = lambda]);
+			  if (phi < phi0) phi0 = phi;
+			  if (phi > phi1) phi1 = phi;
+			}
+
+			function linePoint(lambda, phi) {
+			  var p = cartesian([lambda * radians, phi * radians]);
+			  if (p0) {
+				var normal = cartesianCross(p0, p),
+					equatorial = [normal[1], -normal[0], 0],
+					inflection = cartesianCross(equatorial, normal);
+				cartesianNormalizeInPlace(inflection);
+				inflection = spherical(inflection);
+				var delta = lambda - lambda2,
+					sign$$1 = delta > 0 ? 1 : -1,
+					lambdai = inflection[0] * degrees$1 * sign$$1,
+					phii,
+					antimeridian = abs(delta) > 180;
+				if (antimeridian ^ (sign$$1 * lambda2 < lambdai && lambdai < sign$$1 * lambda)) {
+				  phii = inflection[1] * degrees$1;
+				  if (phii > phi1) phi1 = phii;
+				} else if (lambdai = (lambdai + 360) % 360 - 180, antimeridian ^ (sign$$1 * lambda2 < lambdai && lambdai < sign$$1 * lambda)) {
+				  phii = -inflection[1] * degrees$1;
+				  if (phii < phi0) phi0 = phii;
+				} else {
+				  if (phi < phi0) phi0 = phi;
+				  if (phi > phi1) phi1 = phi;
+				}
+				if (antimeridian) {
+				  if (lambda < lambda2) {
+					if (angle(lambda0$1, lambda) > angle(lambda0$1, lambda1)) lambda1 = lambda;
+				  } else {
+					if (angle(lambda, lambda1) > angle(lambda0$1, lambda1)) lambda0$1 = lambda;
+				  }
+				} else {
+				  if (lambda1 >= lambda0$1) {
+					if (lambda < lambda0$1) lambda0$1 = lambda;
+					if (lambda > lambda1) lambda1 = lambda;
+				  } else {
+					if (lambda > lambda2) {
+					  if (angle(lambda0$1, lambda) > angle(lambda0$1, lambda1)) lambda1 = lambda;
+					} else {
+					  if (angle(lambda, lambda1) > angle(lambda0$1, lambda1)) lambda0$1 = lambda;
+					}
+				  }
+				}
+			  } else {
+				boundsPoint(lambda, phi);
+			  }
+			  p0 = p, lambda2 = lambda;
+			}
+
+			function boundsLineStart() {
+			  boundsStream.point = linePoint;
+			}
+
+			function boundsLineEnd() {
+			  range$1[0] = lambda0$1, range$1[1] = lambda1;
+			  boundsStream.point = boundsPoint;
+			  p0 = null;
+			}
+
+			function boundsRingPoint(lambda, phi) {
+			  if (p0) {
+				var delta = lambda - lambda2;
+				deltaSum.add(abs(delta) > 180 ? delta + (delta > 0 ? 360 : -360) : delta);
+			  } else {
+				lambda00$1 = lambda, phi00$1 = phi;
+			  }
+			  areaStream.point(lambda, phi);
+			  linePoint(lambda, phi);
+			}
+
+			function boundsRingStart() {
+			  areaStream.lineStart();
+			}
+
+			function boundsRingEnd() {
+			  boundsRingPoint(lambda00$1, phi00$1);
+			  areaStream.lineEnd();
+			  if (abs(deltaSum) > epsilon$4) lambda0$1 = -(lambda1 = 180);
+			  range$1[0] = lambda0$1, range$1[1] = lambda1;
+			  p0 = null;
+			}
+
+			// Finds the left-right distance between two longitudes.
+			// This is almost the same as (lambda1 - lambda0 + 360°) % 360°, except that we want
+			// the distance between ±180° to be 360°.
+			function angle(lambda0, lambda1) {
+			  return (lambda1 -= lambda0) < 0 ? lambda1 + 360 : lambda1;
+			}
+
+			function rangeCompare(a, b) {
+			  return a[0] - b[0];
+			}
+
+			function rangeContains(range, x) {
+			  return range[0] <= range[1] ? range[0] <= x && x <= range[1] : x < range[0] || range[1] < x;
+			}
+
+			var bounds = function(feature) {
+			  var i, n, a, b, merged, deltaMax, delta;
+
+			  phi1 = lambda1 = -(lambda0$1 = phi0 = Infinity);
+			  ranges = [];
+			  geoStream(feature, boundsStream);
+
+			  // First, sort ranges by their minimum longitudes.
+			  if (n = ranges.length) {
+				ranges.sort(rangeCompare);
+
+				// Then, merge any ranges that overlap.
+				for (i = 1, a = ranges[0], merged = [a]; i < n; ++i) {
+				  b = ranges[i];
+				  if (rangeContains(a, b[0]) || rangeContains(a, b[1])) {
+					if (angle(a[0], b[1]) > angle(a[0], a[1])) a[1] = b[1];
+					if (angle(b[0], a[1]) > angle(a[0], a[1])) a[0] = b[0];
+				  } else {
+					merged.push(a = b);
+				  }
+				}
+
+				// Finally, find the largest gap between the merged ranges.
+				// The final bounding box will be the inverse of this gap.
+				for (deltaMax = -Infinity, n = merged.length - 1, i = 0, a = merged[n]; i <= n; a = b, ++i) {
+				  b = merged[i];
+				  if ((delta = angle(a[1], b[0])) > deltaMax) deltaMax = delta, lambda0$1 = b[0], lambda1 = a[1];
+				}
+			  }
+
+			  ranges = range$1 = null;
+
+			  return lambda0$1 === Infinity || phi0 === Infinity
+				  ? [[NaN, NaN], [NaN, NaN]]
+				  : [[lambda0$1, phi0], [lambda1, phi1]];
+			};
+
+			var W0;
+			var W1;
+			var X0;
+			var Y0;
+			var Z0;
+			var X1;
+			var Y1;
+			var Z1;
+			var X2;
+			var Y2;
+			var Z2;
+			var lambda00$2;
+			var phi00$2;
+			var x0;
+			var y0;
+			var z0; // previous point
+
+			var centroidStream = {
+			  sphere: noop$2,
+			  point: centroidPoint,
+			  lineStart: centroidLineStart,
+			  lineEnd: centroidLineEnd,
+			  polygonStart: function() {
+				centroidStream.lineStart = centroidRingStart;
+				centroidStream.lineEnd = centroidRingEnd;
+			  },
+			  polygonEnd: function() {
+				centroidStream.lineStart = centroidLineStart;
+				centroidStream.lineEnd = centroidLineEnd;
+			  }
+			};
+
+			// Arithmetic mean of Cartesian vectors.
+			function centroidPoint(lambda, phi) {
+			  lambda *= radians, phi *= radians;
+			  var cosPhi = cos$1(phi);
+			  centroidPointCartesian(cosPhi * cos$1(lambda), cosPhi * sin$1(lambda), sin$1(phi));
+			}
+
+			function centroidPointCartesian(x, y, z) {
+			  ++W0;
+			  X0 += (x - X0) / W0;
+			  Y0 += (y - Y0) / W0;
+			  Z0 += (z - Z0) / W0;
+			}
+
+			function centroidLineStart() {
+			  centroidStream.point = centroidLinePointFirst;
+			}
+
+			function centroidLinePointFirst(lambda, phi) {
+			  lambda *= radians, phi *= radians;
+			  var cosPhi = cos$1(phi);
+			  x0 = cosPhi * cos$1(lambda);
+			  y0 = cosPhi * sin$1(lambda);
+			  z0 = sin$1(phi);
+			  centroidStream.point = centroidLinePoint;
+			  centroidPointCartesian(x0, y0, z0);
+			}
+
+			function centroidLinePoint(lambda, phi) {
+			  lambda *= radians, phi *= radians;
+			  var cosPhi = cos$1(phi),
+				  x = cosPhi * cos$1(lambda),
+				  y = cosPhi * sin$1(lambda),
+				  z = sin$1(phi),
+				  w = atan2(sqrt$1((w = y0 * z - z0 * y) * w + (w = z0 * x - x0 * z) * w + (w = x0 * y - y0 * x) * w), x0 * x + y0 * y + z0 * z);
+			  W1 += w;
+			  X1 += w * (x0 + (x0 = x));
+			  Y1 += w * (y0 + (y0 = y));
+			  Z1 += w * (z0 + (z0 = z));
+			  centroidPointCartesian(x0, y0, z0);
+			}
+
+			function centroidLineEnd() {
+			  centroidStream.point = centroidPoint;
+			}
+
+			// See J. E. Brock, The Inertia Tensor for a Spherical Triangle,
+			// J. Applied Mechanics 42, 239 (1975).
+			function centroidRingStart() {
+			  centroidStream.point = centroidRingPointFirst;
+			}
+
+			function centroidRingEnd() {
+			  centroidRingPoint(lambda00$2, phi00$2);
+			  centroidStream.point = centroidPoint;
+			}
+
+			function centroidRingPointFirst(lambda, phi) {
+			  lambda00$2 = lambda, phi00$2 = phi;
+			  lambda *= radians, phi *= radians;
+			  centroidStream.point = centroidRingPoint;
+			  var cosPhi = cos$1(phi);
+			  x0 = cosPhi * cos$1(lambda);
+			  y0 = cosPhi * sin$1(lambda);
+			  z0 = sin$1(phi);
+			  centroidPointCartesian(x0, y0, z0);
+			}
+
+			function centroidRingPoint(lambda, phi) {
+			  lambda *= radians, phi *= radians;
+			  var cosPhi = cos$1(phi),
+				  x = cosPhi * cos$1(lambda),
+				  y = cosPhi * sin$1(lambda),
+				  z = sin$1(phi),
+				  cx = y0 * z - z0 * y,
+				  cy = z0 * x - x0 * z,
+				  cz = x0 * y - y0 * x,
+				  m = sqrt$1(cx * cx + cy * cy + cz * cz),
+				  u = x0 * x + y0 * y + z0 * z,
+				  v = m && -acos(u) / m, // area weight
+				  w = atan2(m, u); // line weight
+			  X2 += v * cx;
+			  Y2 += v * cy;
+			  Z2 += v * cz;
+			  W1 += w;
+			  X1 += w * (x0 + (x0 = x));
+			  Y1 += w * (y0 + (y0 = y));
+			  Z1 += w * (z0 + (z0 = z));
+			  centroidPointCartesian(x0, y0, z0);
+			}
+
+			var centroid$1 = function(object) {
+			  W0 = W1 =
+			  X0 = Y0 = Z0 =
+			  X1 = Y1 = Z1 =
+			  X2 = Y2 = Z2 = 0;
+			  geoStream(object, centroidStream);
+
+			  var x = X2,
+				  y = Y2,
+				  z = Z2,
+				  m = x * x + y * y + z * z;
+
+			  // If the area-weighted ccentroid is undefined, fall back to length-weighted ccentroid.
+			  if (m < epsilon2$2) {
+				x = X1, y = Y1, z = Z1;
+				// If the feature has zero length, fall back to arithmetic mean of point vectors.
+				if (W1 < epsilon$4) x = X0, y = Y0, z = Z0;
+				m = x * x + y * y + z * z;
+				// If the feature still has an undefined ccentroid, then return.
+				if (m < epsilon2$2) return [NaN, NaN];
+			  }
+
+			  return [atan2(y, x) * degrees$1, asin$1(z / sqrt$1(m)) * degrees$1];
+			};
+
+			var constant$13 = function(x) {
+			  return function() {
+				return x;
+			  };
+			};
+
+			var compose = function(a, b) {
+
+			  function compose(x, y) {
+				return x = a(x, y), b(x[0], x[1]);
+			  }
+
+			  if (a.invert && b.invert) compose.invert = function(x, y) {
+				return x = b.invert(x, y), x && a.invert(x[0], x[1]);
+			  };
+
+			  return compose;
+			};
+
+			function rotationIdentity(lambda, phi) {
+			  return [lambda > pi$4 ? lambda - tau$4 : lambda < -pi$4 ? lambda + tau$4 : lambda, phi];
+			}
+
+			rotationIdentity.invert = rotationIdentity;
+
+			function rotateRadians(deltaLambda, deltaPhi, deltaGamma) {
+			  return (deltaLambda %= tau$4) ? (deltaPhi || deltaGamma ? compose(rotationLambda(deltaLambda), rotationPhiGamma(deltaPhi, deltaGamma))
+				: rotationLambda(deltaLambda))
+				: (deltaPhi || deltaGamma ? rotationPhiGamma(deltaPhi, deltaGamma)
+				: rotationIdentity);
+			}
+
+			function forwardRotationLambda(deltaLambda) {
+			  return function(lambda, phi) {
+				return lambda += deltaLambda, [lambda > pi$4 ? lambda - tau$4 : lambda < -pi$4 ? lambda + tau$4 : lambda, phi];
+			  };
+			}
+
+			function rotationLambda(deltaLambda) {
+			  var rotation = forwardRotationLambda(deltaLambda);
+			  rotation.invert = forwardRotationLambda(-deltaLambda);
+			  return rotation;
+			}
+
+			function rotationPhiGamma(deltaPhi, deltaGamma) {
+			  var cosDeltaPhi = cos$1(deltaPhi),
+				  sinDeltaPhi = sin$1(deltaPhi),
+				  cosDeltaGamma = cos$1(deltaGamma),
+				  sinDeltaGamma = sin$1(deltaGamma);
+
+			  function rotation(lambda, phi) {
+				var cosPhi = cos$1(phi),
+					x = cos$1(lambda) * cosPhi,
+					y = sin$1(lambda) * cosPhi,
+					z = sin$1(phi),
+					k = z * cosDeltaPhi + x * sinDeltaPhi;
+				return [
+				  atan2(y * cosDeltaGamma - k * sinDeltaGamma, x * cosDeltaPhi - z * sinDeltaPhi),
+				  asin$1(k * cosDeltaGamma + y * sinDeltaGamma)
+				];
+			  }
+
+			  rotation.invert = function(lambda, phi) {
+				var cosPhi = cos$1(phi),
+					x = cos$1(lambda) * cosPhi,
+					y = sin$1(lambda) * cosPhi,
+					z = sin$1(phi),
+					k = z * cosDeltaGamma - y * sinDeltaGamma;
+				return [
+				  atan2(y * cosDeltaGamma + z * sinDeltaGamma, x * cosDeltaPhi + k * sinDeltaPhi),
+				  asin$1(k * cosDeltaPhi - x * sinDeltaPhi)
+				];
+			  };
+
+			  return rotation;
+			}
+
+			var rotation = function(rotate) {
+			  rotate = rotateRadians(rotate[0] * radians, rotate[1] * radians, rotate.length > 2 ? rotate[2] * radians : 0);
+
+			  function forward(coordinates) {
+				coordinates = rotate(coordinates[0] * radians, coordinates[1] * radians);
+				return coordinates[0] *= degrees$1, coordinates[1] *= degrees$1, coordinates;
+			  }
+
+			  forward.invert = function(coordinates) {
+				coordinates = rotate.invert(coordinates[0] * radians, coordinates[1] * radians);
+				return coordinates[0] *= degrees$1, coordinates[1] *= degrees$1, coordinates;
+			  };
+
+			  return forward;
+			};
+
+			// Generates a circle centered at [0°, 0°], with a given radius and precision.
+			function circleStream(stream, radius, delta, direction, t0, t1) {
+			  if (!delta) return;
+			  var cosRadius = cos$1(radius),
+				  sinRadius = sin$1(radius),
+				  step = direction * delta;
+			  if (t0 == null) {
+				t0 = radius + direction * tau$4;
+				t1 = radius - step / 2;
+			  } else {
+				t0 = circleRadius(cosRadius, t0);
+				t1 = circleRadius(cosRadius, t1);
+				if (direction > 0 ? t0 < t1 : t0 > t1) t0 += direction * tau$4;
+			  }
+			  for (var point, t = t0; direction > 0 ? t > t1 : t < t1; t -= step) {
+				point = spherical([cosRadius, -sinRadius * cos$1(t), -sinRadius * sin$1(t)]);
+				stream.point(point[0], point[1]);
+			  }
+			}
+
+			// Returns the signed angle of a cartesian point relative to [cosRadius, 0, 0].
+			function circleRadius(cosRadius, point) {
+			  point = cartesian(point), point[0] -= cosRadius;
+			  cartesianNormalizeInPlace(point);
+			  var radius = acos(-point[1]);
+			  return ((-point[2] < 0 ? -radius : radius) + tau$4 - epsilon$4) % tau$4;
+			}
+
+			var circle$1 = function() {
+			  var center = constant$13([0, 0]),
+				  radius = constant$13(90),
+				  precision = constant$13(6),
+				  ring,
+				  rotate,
+				  stream = {point: point};
+
+			  function point(x, y) {
+				ring.push(x = rotate(x, y));
+				x[0] *= degrees$1, x[1] *= degrees$1;
+			  }
+
+			  function circle() {
+				var c = center.apply(this, arguments),
+					r = radius.apply(this, arguments) * radians,
+					p = precision.apply(this, arguments) * radians;
+				ring = [];
+				rotate = rotateRadians(-c[0] * radians, -c[1] * radians, 0).invert;
+				circleStream(stream, r, p, 1);
+				c = {type: "Polygon", coordinates: [ring]};
+				ring = rotate = null;
+				return c;
+			  }
+
+			  circle.center = function(_) {
+				return arguments.length ? (center = typeof _ === "function" ? _ : constant$13([+_[0], +_[1]]), circle) : center;
+			  };
+
+			  circle.radius = function(_) {
+				return arguments.length ? (radius = typeof _ === "function" ? _ : constant$13(+_), circle) : radius;
+			  };
+
+			  circle.precision = function(_) {
+				return arguments.length ? (precision = typeof _ === "function" ? _ : constant$13(+_), circle) : precision;
+			  };
+
+			  return circle;
+			};
+
+			var clipBuffer = function() {
+			  var lines = [],
+				  line;
+			  return {
+				point: function(x, y) {
+				  line.push([x, y]);
+				},
+				lineStart: function() {
+				  lines.push(line = []);
+				},
+				lineEnd: noop$2,
+				rejoin: function() {
+				  if (lines.length > 1) lines.push(lines.pop().concat(lines.shift()));
+				},
+				result: function() {
+				  var result = lines;
+				  lines = [];
+				  line = null;
+				  return result;
+				}
+			  };
+			};
+
+			var clipLine = function(a, b, x0, y0, x1, y1) {
+			  var ax = a[0],
+				  ay = a[1],
+				  bx = b[0],
+				  by = b[1],
+				  t0 = 0,
+				  t1 = 1,
+				  dx = bx - ax,
+				  dy = by - ay,
+				  r;
+
+			  r = x0 - ax;
+			  if (!dx && r > 0) return;
+			  r /= dx;
+			  if (dx < 0) {
+				if (r < t0) return;
+				if (r < t1) t1 = r;
+			  } else if (dx > 0) {
+				if (r > t1) return;
+				if (r > t0) t0 = r;
+			  }
+
+			  r = x1 - ax;
+			  if (!dx && r < 0) return;
+			  r /= dx;
+			  if (dx < 0) {
+				if (r > t1) return;
+				if (r > t0) t0 = r;
+			  } else if (dx > 0) {
+				if (r < t0) return;
+				if (r < t1) t1 = r;
+			  }
+
+			  r = y0 - ay;
+			  if (!dy && r > 0) return;
+			  r /= dy;
+			  if (dy < 0) {
+				if (r < t0) return;
+				if (r < t1) t1 = r;
+			  } else if (dy > 0) {
+				if (r > t1) return;
+				if (r > t0) t0 = r;
+			  }
+
+			  r = y1 - ay;
+			  if (!dy && r < 0) return;
+			  r /= dy;
+			  if (dy < 0) {
+				if (r > t1) return;
+				if (r > t0) t0 = r;
+			  } else if (dy > 0) {
+				if (r < t0) return;
+				if (r < t1) t1 = r;
+			  }
+
+			  if (t0 > 0) a[0] = ax + t0 * dx, a[1] = ay + t0 * dy;
+			  if (t1 < 1) b[0] = ax + t1 * dx, b[1] = ay + t1 * dy;
+			  return true;
+			};
+
+			var pointEqual = function(a, b) {
+			  return abs(a[0] - b[0]) < epsilon$4 && abs(a[1] - b[1]) < epsilon$4;
+			};
+
+			function Intersection(point, points, other, entry) {
+			  this.x = point;
+			  this.z = points;
+			  this.o = other; // another intersection
+			  this.e = entry; // is an entry?
+			  this.v = false; // visited
+			  this.n = this.p = null; // next & previous
+			}
+
+			// A generalized polygon clipping algorithm: given a polygon that has been cut
+			// into its visible line segments, and rejoins the segments by interpolating
+			// along the clip edge.
+			var clipPolygon = function(segments, compareIntersection, startInside, interpolate, stream) {
+			  var subject = [],
+				  clip = [],
+				  i,
+				  n;
+
+			  segments.forEach(function(segment) {
+				if ((n = segment.length - 1) <= 0) return;
+				var n, p0 = segment[0], p1 = segment[n], x;
+
+				// If the first and last points of a segment are coincident, then treat as a
+				// closed ring. TODO if all rings are closed, then the winding order of the
+				// exterior ring should be checked.
+				if (pointEqual(p0, p1)) {
+				  stream.lineStart();
+				  for (i = 0; i < n; ++i) stream.point((p0 = segment[i])[0], p0[1]);
+				  stream.lineEnd();
+				  return;
+				}
+
+				subject.push(x = new Intersection(p0, segment, null, true));
+				clip.push(x.o = new Intersection(p0, null, x, false));
+				subject.push(x = new Intersection(p1, segment, null, false));
+				clip.push(x.o = new Intersection(p1, null, x, true));
+			  });
+
+			  if (!subject.length) return;
+
+			  clip.sort(compareIntersection);
+			  link$1(subject);
+			  link$1(clip);
+
+			  for (i = 0, n = clip.length; i < n; ++i) {
+				clip[i].e = startInside = !startInside;
+			  }
+
+			  var start = subject[0],
+				  points,
+				  point;
+
+			  while (1) {
+				// Find first unvisited intersection.
+				var current = start,
+					isSubject = true;
+				while (current.v) if ((current = current.n) === start) return;
+				points = current.z;
+				stream.lineStart();
+				do {
+				  current.v = current.o.v = true;
+				  if (current.e) {
+					if (isSubject) {
+					  for (i = 0, n = points.length; i < n; ++i) stream.point((point = points[i])[0], point[1]);
+					} else {
+					  interpolate(current.x, current.n.x, 1, stream);
+					}
+					current = current.n;
+				  } else {
+					if (isSubject) {
+					  points = current.p.z;
+					  for (i = points.length - 1; i >= 0; --i) stream.point((point = points[i])[0], point[1]);
+					} else {
+					  interpolate(current.x, current.p.x, -1, stream);
+					}
+					current = current.p;
+				  }
+				  current = current.o;
+				  points = current.z;
+				  isSubject = !isSubject;
+				} while (!current.v);
+				stream.lineEnd();
+			  }
+			};
+
+			function link$1(array) {
+			  if (!(n = array.length)) return;
+			  var n,
+				  i = 0,
+				  a = array[0],
+				  b;
+			  while (++i < n) {
+				a.n = b = array[i];
+				b.p = a;
+				a = b;
+			  }
+			  a.n = b = array[0];
+			  b.p = a;
+			}
+
+			var clipMax = 1e9;
+			var clipMin = -clipMax;
+
+			// TODO Use d3-polygon’s polygonContains here for the ring check?
+			// TODO Eliminate duplicate buffering in clipBuffer and polygon.push?
+
+			function clipExtent(x0, y0, x1, y1) {
+
+			  function visible(x, y) {
+				return x0 <= x && x <= x1 && y0 <= y && y <= y1;
+			  }
+
+			  function interpolate(from, to, direction, stream) {
+				var a = 0, a1 = 0;
+				if (from == null
+					|| (a = corner(from, direction)) !== (a1 = corner(to, direction))
+					|| comparePoint(from, to) < 0 ^ direction > 0) {
+				  do stream.point(a === 0 || a === 3 ? x0 : x1, a > 1 ? y1 : y0);
+				  while ((a = (a + direction + 4) % 4) !== a1);
+				} else {
+				  stream.point(to[0], to[1]);
+				}
+			  }
+
+			  function corner(p, direction) {
+				return abs(p[0] - x0) < epsilon$4 ? direction > 0 ? 0 : 3
+					: abs(p[0] - x1) < epsilon$4 ? direction > 0 ? 2 : 1
+					: abs(p[1] - y0) < epsilon$4 ? direction > 0 ? 1 : 0
+					: direction > 0 ? 3 : 2; // abs(p[1] - y1) < epsilon
+			  }
+
+			  function compareIntersection(a, b) {
+				return comparePoint(a.x, b.x);
+			  }
+
+			  function comparePoint(a, b) {
+				var ca = corner(a, 1),
+					cb = corner(b, 1);
+				return ca !== cb ? ca - cb
+					: ca === 0 ? b[1] - a[1]
+					: ca === 1 ? a[0] - b[0]
+					: ca === 2 ? a[1] - b[1]
+					: b[0] - a[0];
+			  }
+
+			  return function(stream) {
+				var activeStream = stream,
+					bufferStream = clipBuffer(),
+					segments,
+					polygon,
+					ring,
+					x__, y__, v__, // first point
+					x_, y_, v_, // previous point
+					first,
+					clean;
+
+				var clipStream = {
+				  point: point,
+				  lineStart: lineStart,
+				  lineEnd: lineEnd,
+				  polygonStart: polygonStart,
+				  polygonEnd: polygonEnd
+				};
+
+				function point(x, y) {
+				  if (visible(x, y)) activeStream.point(x, y);
+				}
+
+				function polygonInside() {
+				  var winding = 0;
+
+				  for (var i = 0, n = polygon.length; i < n; ++i) {
+					for (var ring = polygon[i], j = 1, m = ring.length, point = ring[0], a0, a1, b0 = point[0], b1 = point[1]; j < m; ++j) {
+					  a0 = b0, a1 = b1, point = ring[j], b0 = point[0], b1 = point[1];
+					  if (a1 <= y1) { if (b1 > y1 && (b0 - a0) * (y1 - a1) > (b1 - a1) * (x0 - a0)) ++winding; }
+					  else { if (b1 <= y1 && (b0 - a0) * (y1 - a1) < (b1 - a1) * (x0 - a0)) --winding; }
+					}
+				  }
+
+				  return winding;
+				}
+
+				// Buffer geometry within a polygon and then clip it en masse.
+				function polygonStart() {
+				  activeStream = bufferStream, segments = [], polygon = [], clean = true;
+				}
+
+				function polygonEnd() {
+				  var startInside = polygonInside(),
+					  cleanInside = clean && startInside,
+					  visible = (segments = merge(segments)).length;
+				  if (cleanInside || visible) {
+					stream.polygonStart();
+					if (cleanInside) {
+					  stream.lineStart();
+					  interpolate(null, null, 1, stream);
+					  stream.lineEnd();
+					}
+					if (visible) {
+					  clipPolygon(segments, compareIntersection, startInside, interpolate, stream);
+					}
+					stream.polygonEnd();
+				  }
+				  activeStream = stream, segments = polygon = ring = null;
+				}
+
+				function lineStart() {
+				  clipStream.point = linePoint;
+				  if (polygon) polygon.push(ring = []);
+				  first = true;
+				  v_ = false;
+				  x_ = y_ = NaN;
+				}
+
+				// TODO rather than special-case polygons, simply handle them separately.
+				// Ideally, coincident intersection points should be jittered to avoid
+				// clipping issues.
+				function lineEnd() {
+				  if (segments) {
+					linePoint(x__, y__);
+					if (v__ && v_) bufferStream.rejoin();
+					segments.push(bufferStream.result());
+				  }
+				  clipStream.point = point;
+				  if (v_) activeStream.lineEnd();
+				}
+
+				function linePoint(x, y) {
+				  var v = visible(x, y);
+				  if (polygon) ring.push([x, y]);
+				  if (first) {
+					x__ = x, y__ = y, v__ = v;
+					first = false;
+					if (v) {
+					  activeStream.lineStart();
+					  activeStream.point(x, y);
+					}
+				  } else {
+					if (v && v_) activeStream.point(x, y);
+					else {
+					  var a = [x_ = Math.max(clipMin, Math.min(clipMax, x_)), y_ = Math.max(clipMin, Math.min(clipMax, y_))],
+						  b = [x = Math.max(clipMin, Math.min(clipMax, x)), y = Math.max(clipMin, Math.min(clipMax, y))];
+					  if (clipLine(a, b, x0, y0, x1, y1)) {
+						if (!v_) {
+						  activeStream.lineStart();
+						  activeStream.point(a[0], a[1]);
+						}
+						activeStream.point(b[0], b[1]);
+						if (!v) activeStream.lineEnd();
+						clean = false;
+					  } else if (v) {
+						activeStream.lineStart();
+						activeStream.point(x, y);
+						clean = false;
+					  }
+					}
+				  }
+				  x_ = x, y_ = y, v_ = v;
+				}
+
+				return clipStream;
+			  };
+			}
+
+			var extent$1 = function() {
+			  var x0 = 0,
+				  y0 = 0,
+				  x1 = 960,
+				  y1 = 500,
+				  cache,
+				  cacheStream,
+				  clip;
+
+			  return clip = {
+				stream: function(stream) {
+				  return cache && cacheStream === stream ? cache : cache = clipExtent(x0, y0, x1, y1)(cacheStream = stream);
+				},
+				extent: function(_) {
+				  return arguments.length ? (x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1], cache = cacheStream = null, clip) : [[x0, y0], [x1, y1]];
+				}
+			  };
+			};
+
+			var lengthSum = adder();
+			var lambda0$2;
+			var sinPhi0$1;
+			var cosPhi0$1;
+
+			var lengthStream = {
+			  sphere: noop$2,
+			  point: noop$2,
+			  lineStart: lengthLineStart,
+			  lineEnd: noop$2,
+			  polygonStart: noop$2,
+			  polygonEnd: noop$2
+			};
+
+			function lengthLineStart() {
+			  lengthStream.point = lengthPointFirst;
+			  lengthStream.lineEnd = lengthLineEnd;
+			}
+
+			function lengthLineEnd() {
+			  lengthStream.point = lengthStream.lineEnd = noop$2;
+			}
+
+			function lengthPointFirst(lambda, phi) {
+			  lambda *= radians, phi *= radians;
+			  lambda0$2 = lambda, sinPhi0$1 = sin$1(phi), cosPhi0$1 = cos$1(phi);
+			  lengthStream.point = lengthPoint;
+			}
+
+			function lengthPoint(lambda, phi) {
+			  lambda *= radians, phi *= radians;
+			  var sinPhi = sin$1(phi),
+				  cosPhi = cos$1(phi),
+				  delta = abs(lambda - lambda0$2),
+				  cosDelta = cos$1(delta),
+				  sinDelta = sin$1(delta),
+				  x = cosPhi * sinDelta,
+				  y = cosPhi0$1 * sinPhi - sinPhi0$1 * cosPhi * cosDelta,
+				  z = sinPhi0$1 * sinPhi + cosPhi0$1 * cosPhi * cosDelta;
+			  lengthSum.add(atan2(sqrt$1(x * x + y * y), z));
+			  lambda0$2 = lambda, sinPhi0$1 = sinPhi, cosPhi0$1 = cosPhi;
+			}
+
+			var length$2 = function(object) {
+			  lengthSum.reset();
+			  geoStream(object, lengthStream);
+			  return +lengthSum;
+			};
+
+			var coordinates = [null, null];
+			var object$1 = {type: "LineString", coordinates: coordinates};
+
+			var distance = function(a, b) {
+			  coordinates[0] = a;
+			  coordinates[1] = b;
+			  return length$2(object$1);
+			};
+
+			function graticuleX(y0, y1, dy) {
+			  var y = range(y0, y1 - epsilon$4, dy).concat(y1);
+			  return function(x) { return y.map(function(y) { return [x, y]; }); };
+			}
+
+			function graticuleY(x0, x1, dx) {
+			  var x = range(x0, x1 - epsilon$4, dx).concat(x1);
+			  return function(y) { return x.map(function(x) { return [x, y]; }); };
+			}
+
+			function graticule() {
+			  var x1, x0, X1, X0,
+				  y1, y0, Y1, Y0,
+				  dx = 10, dy = dx, DX = 90, DY = 360,
+				  x, y, X, Y,
+				  precision = 2.5;
+
+			  function graticule() {
+				return {type: "MultiLineString", coordinates: lines()};
+			  }
+
+			  function lines() {
+				return range(ceil(X0 / DX) * DX, X1, DX).map(X)
+					.concat(range(ceil(Y0 / DY) * DY, Y1, DY).map(Y))
+					.concat(range(ceil(x0 / dx) * dx, x1, dx).filter(function(x) { return abs(x % DX) > epsilon$4; }).map(x))
+					.concat(range(ceil(y0 / dy) * dy, y1, dy).filter(function(y) { return abs(y % DY) > epsilon$4; }).map(y));
+			  }
+
+			  graticule.lines = function() {
+				return lines().map(function(coordinates) { return {type: "LineString", coordinates: coordinates}; });
+			  };
+
+			  graticule.outline = function() {
+				return {
+				  type: "Polygon",
+				  coordinates: [
+					X(X0).concat(
+					Y(Y1).slice(1),
+					X(X1).reverse().slice(1),
+					Y(Y0).reverse().slice(1))
+				  ]
+				};
+			  };
+
+			  graticule.extent = function(_) {
+				if (!arguments.length) return graticule.extentMinor();
+				return graticule.extentMajor(_).extentMinor(_);
+			  };
+
+			  graticule.extentMajor = function(_) {
+				if (!arguments.length) return [[X0, Y0], [X1, Y1]];
+				X0 = +_[0][0], X1 = +_[1][0];
+				Y0 = +_[0][1], Y1 = +_[1][1];
+				if (X0 > X1) _ = X0, X0 = X1, X1 = _;
+				if (Y0 > Y1) _ = Y0, Y0 = Y1, Y1 = _;
+				return graticule.precision(precision);
+			  };
+
+			  graticule.extentMinor = function(_) {
+				if (!arguments.length) return [[x0, y0], [x1, y1]];
+				x0 = +_[0][0], x1 = +_[1][0];
+				y0 = +_[0][1], y1 = +_[1][1];
+				if (x0 > x1) _ = x0, x0 = x1, x1 = _;
+				if (y0 > y1) _ = y0, y0 = y1, y1 = _;
+				return graticule.precision(precision);
+			  };
+
+			  graticule.step = function(_) {
+				if (!arguments.length) return graticule.stepMinor();
+				return graticule.stepMajor(_).stepMinor(_);
+			  };
+
+			  graticule.stepMajor = function(_) {
+				if (!arguments.length) return [DX, DY];
+				DX = +_[0], DY = +_[1];
+				return graticule;
+			  };
+
+			  graticule.stepMinor = function(_) {
+				if (!arguments.length) return [dx, dy];
+				dx = +_[0], dy = +_[1];
+				return graticule;
+			  };
+
+			  graticule.precision = function(_) {
+				if (!arguments.length) return precision;
+				precision = +_;
+				x = graticuleX(y0, y1, 90);
+				y = graticuleY(x0, x1, precision);
+				X = graticuleX(Y0, Y1, 90);
+				Y = graticuleY(X0, X1, precision);
+				return graticule;
+			  };
+
+			  return graticule
+				  .extentMajor([[-180, -90 + epsilon$4], [180, 90 - epsilon$4]])
+				  .extentMinor([[-180, -80 - epsilon$4], [180, 80 + epsilon$4]]);
+			}
+
+			function graticule10() {
+			  return graticule()();
+			}
+
+			var interpolate$2 = function(a, b) {
+			  var x0 = a[0] * radians,
+				  y0 = a[1] * radians,
+				  x1 = b[0] * radians,
+				  y1 = b[1] * radians,
+				  cy0 = cos$1(y0),
+				  sy0 = sin$1(y0),
+				  cy1 = cos$1(y1),
+				  sy1 = sin$1(y1),
+				  kx0 = cy0 * cos$1(x0),
+				  ky0 = cy0 * sin$1(x0),
+				  kx1 = cy1 * cos$1(x1),
+				  ky1 = cy1 * sin$1(x1),
+				  d = 2 * asin$1(sqrt$1(haversin(y1 - y0) + cy0 * cy1 * haversin(x1 - x0))),
+				  k = sin$1(d);
+
+			  var interpolate = d ? function(t) {
+				var B = sin$1(t *= d) / k,
+					A = sin$1(d - t) / k,
+					x = A * kx0 + B * kx1,
+					y = A * ky0 + B * ky1,
+					z = A * sy0 + B * sy1;
+				return [
+				  atan2(y, x) * degrees$1,
+				  atan2(z, sqrt$1(x * x + y * y)) * degrees$1
+				];
+			  } : function() {
+				return [x0 * degrees$1, y0 * degrees$1];
+			  };
+
+			  interpolate.distance = d;
+
+			  return interpolate;
+			};
+
+			var identity$7 = function(x) {
+			  return x;
+			};
+
+			var areaSum$1 = adder();
+			var areaRingSum$1 = adder();
+			var x00;
+			var y00;
+			var x0$1;
+			var y0$1;
+
+			var areaStream$1 = {
+			  point: noop$2,
+			  lineStart: noop$2,
+			  lineEnd: noop$2,
+			  polygonStart: function() {
+				areaStream$1.lineStart = areaRingStart$1;
+				areaStream$1.lineEnd = areaRingEnd$1;
+			  },
+			  polygonEnd: function() {
+				areaStream$1.lineStart = areaStream$1.lineEnd = areaStream$1.point = noop$2;
+				areaSum$1.add(abs(areaRingSum$1));
+				areaRingSum$1.reset();
+			  },
+			  result: function() {
+				var area = areaSum$1 / 2;
+				areaSum$1.reset();
+				return area;
+			  }
+			};
+
+			function areaRingStart$1() {
+			  areaStream$1.point = areaPointFirst$1;
+			}
+
+			function areaPointFirst$1(x, y) {
+			  areaStream$1.point = areaPoint$1;
+			  x00 = x0$1 = x, y00 = y0$1 = y;
+			}
+
+			function areaPoint$1(x, y) {
+			  areaRingSum$1.add(y0$1 * x - x0$1 * y);
+			  x0$1 = x, y0$1 = y;
+			}
+
+			function areaRingEnd$1() {
+			  areaPoint$1(x00, y00);
+			}
+
+			var x0$2 = Infinity;
+			var y0$2 = x0$2;
+			var x1 = -x0$2;
+			var y1 = x1;
+
+			var boundsStream$1 = {
+			  point: boundsPoint$1,
+			  lineStart: noop$2,
+			  lineEnd: noop$2,
+			  polygonStart: noop$2,
+			  polygonEnd: noop$2,
+			  result: function() {
+				var bounds = [[x0$2, y0$2], [x1, y1]];
+				x1 = y1 = -(y0$2 = x0$2 = Infinity);
+				return bounds;
+			  }
+			};
+
+			function boundsPoint$1(x, y) {
+			  if (x < x0$2) x0$2 = x;
+			  if (x > x1) x1 = x;
+			  if (y < y0$2) y0$2 = y;
+			  if (y > y1) y1 = y;
+			}
+
+			// TODO Enforce positive area for exterior, negative area for interior?
+
+			var X0$1 = 0;
+			var Y0$1 = 0;
+			var Z0$1 = 0;
+			var X1$1 = 0;
+			var Y1$1 = 0;
+			var Z1$1 = 0;
+			var X2$1 = 0;
+			var Y2$1 = 0;
+			var Z2$1 = 0;
+			var x00$1;
+			var y00$1;
+			var x0$3;
+			var y0$3;
+
+			var centroidStream$1 = {
+			  point: centroidPoint$1,
+			  lineStart: centroidLineStart$1,
+			  lineEnd: centroidLineEnd$1,
+			  polygonStart: function() {
+				centroidStream$1.lineStart = centroidRingStart$1;
+				centroidStream$1.lineEnd = centroidRingEnd$1;
+			  },
+			  polygonEnd: function() {
+				centroidStream$1.point = centroidPoint$1;
+				centroidStream$1.lineStart = centroidLineStart$1;
+				centroidStream$1.lineEnd = centroidLineEnd$1;
+			  },
+			  result: function() {
+				var centroid = Z2$1 ? [X2$1 / Z2$1, Y2$1 / Z2$1]
+					: Z1$1 ? [X1$1 / Z1$1, Y1$1 / Z1$1]
+					: Z0$1 ? [X0$1 / Z0$1, Y0$1 / Z0$1]
+					: [NaN, NaN];
+				X0$1 = Y0$1 = Z0$1 =
+				X1$1 = Y1$1 = Z1$1 =
+				X2$1 = Y2$1 = Z2$1 = 0;
+				return centroid;
+			  }
+			};
+
+			function centroidPoint$1(x, y) {
+			  X0$1 += x;
+			  Y0$1 += y;
+			  ++Z0$1;
+			}
+
+			function centroidLineStart$1() {
+			  centroidStream$1.point = centroidPointFirstLine;
+			}
+
+			function centroidPointFirstLine(x, y) {
+			  centroidStream$1.point = centroidPointLine;
+			  centroidPoint$1(x0$3 = x, y0$3 = y);
+			}
+
+			function centroidPointLine(x, y) {
+			  var dx = x - x0$3, dy = y - y0$3, z = sqrt$1(dx * dx + dy * dy);
+			  X1$1 += z * (x0$3 + x) / 2;
+			  Y1$1 += z * (y0$3 + y) / 2;
+			  Z1$1 += z;
+			  centroidPoint$1(x0$3 = x, y0$3 = y);
+			}
+
+			function centroidLineEnd$1() {
+			  centroidStream$1.point = centroidPoint$1;
+			}
+
+			function centroidRingStart$1() {
+			  centroidStream$1.point = centroidPointFirstRing;
+			}
+
+			function centroidRingEnd$1() {
+			  centroidPointRing(x00$1, y00$1);
+			}
+
+			function centroidPointFirstRing(x, y) {
+			  centroidStream$1.point = centroidPointRing;
+			  centroidPoint$1(x00$1 = x0$3 = x, y00$1 = y0$3 = y);
+			}
+
+			function centroidPointRing(x, y) {
+			  var dx = x - x0$3,
+				  dy = y - y0$3,
+				  z = sqrt$1(dx * dx + dy * dy);
+
+			  X1$1 += z * (x0$3 + x) / 2;
+			  Y1$1 += z * (y0$3 + y) / 2;
+			  Z1$1 += z;
+
+			  z = y0$3 * x - x0$3 * y;
+			  X2$1 += z * (x0$3 + x);
+			  Y2$1 += z * (y0$3 + y);
+			  Z2$1 += z * 3;
+			  centroidPoint$1(x0$3 = x, y0$3 = y);
+			}
+
+			function PathContext(context) {
+			  this._context = context;
+			}
+
+			PathContext.prototype = {
+			  _radius: 4.5,
+			  pointRadius: function(_) {
+				return this._radius = _, this;
+			  },
+			  polygonStart: function() {
+				this._line = 0;
+			  },
+			  polygonEnd: function() {
+				this._line = NaN;
+			  },
+			  lineStart: function() {
+				this._point = 0;
+			  },
+			  lineEnd: function() {
+				if (this._line === 0) this._context.closePath();
+				this._point = NaN;
+			  },
+			  point: function(x, y) {
+				switch (this._point) {
+				  case 0: {
+					this._context.moveTo(x, y);
+					this._point = 1;
+					break;
+				  }
+				  case 1: {
+					this._context.lineTo(x, y);
+					break;
+				  }
+				  default: {
+					this._context.moveTo(x + this._radius, y);
+					this._context.arc(x, y, this._radius, 0, tau$4);
+					break;
+				  }
+				}
+			  },
+			  result: noop$2
+			};
+
+			function PathString() {
+			  this._string = [];
+			}
+
+			PathString.prototype = {
+			  _circle: circle$2(4.5),
+			  pointRadius: function(_) {
+				return this._circle = circle$2(_), this;
+			  },
+			  polygonStart: function() {
+				this._line = 0;
+			  },
+			  polygonEnd: function() {
+				this._line = NaN;
+			  },
+			  lineStart: function() {
+				this._point = 0;
+			  },
+			  lineEnd: function() {
+				if (this._line === 0) this._string.push("Z");
+				this._point = NaN;
+			  },
+			  point: function(x, y) {
+				switch (this._point) {
+				  case 0: {
+					this._string.push("M", x, ",", y);
+					this._point = 1;
+					break;
+				  }
+				  case 1: {
+					this._string.push("L", x, ",", y);
+					break;
+				  }
+				  default: {
+					this._string.push("M", x, ",", y, this._circle);
+					break;
+				  }
+				}
+			  },
+			  result: function() {
+				if (this._string.length) {
+				  var result = this._string.join("");
+				  this._string = [];
+				  return result;
+				}
+			  }
+			};
+
+			function circle$2(radius) {
+			  return "m0," + radius
+				  + "a" + radius + "," + radius + " 0 1,1 0," + -2 * radius
+				  + "a" + radius + "," + radius + " 0 1,1 0," + 2 * radius
+				  + "z";
+			}
+
+			var index$3 = function(projection, context) {
+			  var pointRadius = 4.5,
+				  projectionStream,
+				  contextStream;
+
+			  function path(object) {
+				if (object) {
+				  if (typeof pointRadius === "function") contextStream.pointRadius(+pointRadius.apply(this, arguments));
+				  geoStream(object, projectionStream(contextStream));
+				}
+				return contextStream.result();
+			  }
+
+			  path.area = function(object) {
+				geoStream(object, projectionStream(areaStream$1));
+				return areaStream$1.result();
+			  };
+
+			  path.bounds = function(object) {
+				geoStream(object, projectionStream(boundsStream$1));
+				return boundsStream$1.result();
+			  };
+
+			  path.centroid = function(object) {
+				geoStream(object, projectionStream(centroidStream$1));
+				return centroidStream$1.result();
+			  };
+
+			  path.projection = function(_) {
+				return arguments.length ? (projectionStream = (projection = _) == null ? identity$7 : _.stream, path) : projection;
+			  };
+
+			  path.context = function(_) {
+				if (!arguments.length) return context;
+				contextStream = (context = _) == null ? new PathString : new PathContext(_);
+				if (typeof pointRadius !== "function") contextStream.pointRadius(pointRadius);
+				return path;
+			  };
+
+			  path.pointRadius = function(_) {
+				if (!arguments.length) return pointRadius;
+				pointRadius = typeof _ === "function" ? _ : (contextStream.pointRadius(+_), +_);
+				return path;
+			  };
+
+			  return path.projection(projection).context(context);
+			};
+
+			var sum$2 = adder();
+
+			var polygonContains = function(polygon, point) {
+			  var lambda = point[0],
+				  phi = point[1],
+				  normal = [sin$1(lambda), -cos$1(lambda), 0],
+				  angle = 0,
+				  winding = 0;
+
+			  sum$2.reset();
+
+			  for (var i = 0, n = polygon.length; i < n; ++i) {
+				if (!(m = (ring = polygon[i]).length)) continue;
+				var ring,
+					m,
+					point0 = ring[m - 1],
+					lambda0 = point0[0],
+					phi0 = point0[1] / 2 + quarterPi,
+					sinPhi0 = sin$1(phi0),
+					cosPhi0 = cos$1(phi0);
+
+				for (var j = 0; j < m; ++j, lambda0 = lambda1, sinPhi0 = sinPhi1, cosPhi0 = cosPhi1, point0 = point1) {
+				  var point1 = ring[j],
+					  lambda1 = point1[0],
+					  phi1 = point1[1] / 2 + quarterPi,
+					  sinPhi1 = sin$1(phi1),
+					  cosPhi1 = cos$1(phi1),
+					  delta = lambda1 - lambda0,
+					  sign$$1 = delta >= 0 ? 1 : -1,
+					  absDelta = sign$$1 * delta,
+					  antimeridian = absDelta > pi$4,
+					  k = sinPhi0 * sinPhi1;
+
+				  sum$2.add(atan2(k * sign$$1 * sin$1(absDelta), cosPhi0 * cosPhi1 + k * cos$1(absDelta)));
+				  angle += antimeridian ? delta + sign$$1 * tau$4 : delta;
+
+				  // Are the longitudes either side of the point’s meridian (lambda),
+				  // and are the latitudes smaller than the parallel (phi)?
+				  if (antimeridian ^ lambda0 >= lambda ^ lambda1 >= lambda) {
+					var arc = cartesianCross(cartesian(point0), cartesian(point1));
+					cartesianNormalizeInPlace(arc);
+					var intersection = cartesianCross(normal, arc);
+					cartesianNormalizeInPlace(intersection);
+					var phiArc = (antimeridian ^ delta >= 0 ? -1 : 1) * asin$1(intersection[2]);
+					if (phi > phiArc || phi === phiArc && (arc[0] || arc[1])) {
+					  winding += antimeridian ^ delta >= 0 ? 1 : -1;
+					}
+				  }
+				}
+			  }
+
+			  // First, determine whether the South pole is inside or outside:
+			  //
+			  // It is inside if:
+			  // * the polygon winds around it in a clockwise direction.
+			  // * the polygon does not (cumulatively) wind around it, but has a negative
+			  //   (counter-clockwise) area.
+			  //
+			  // Second, count the (signed) number of times a segment crosses a lambda
+			  // from the point to the South pole.  If it is zero, then the point is the
+			  // same side as the South pole.
+
+			  return (angle < -epsilon$4 || angle < epsilon$4 && sum$2 < -epsilon$4) ^ (winding & 1);
+			};
+
+			var clip = function(pointVisible, clipLine, interpolate, start) {
+			  return function(rotate, sink) {
+				var line = clipLine(sink),
+					rotatedStart = rotate.invert(start[0], start[1]),
+					ringBuffer = clipBuffer(),
+					ringSink = clipLine(ringBuffer),
+					polygonStarted = false,
+					polygon,
+					segments,
+					ring;
+
+				var clip = {
+				  point: point,
+				  lineStart: lineStart,
+				  lineEnd: lineEnd,
+				  polygonStart: function() {
+					clip.point = pointRing;
+					clip.lineStart = ringStart;
+					clip.lineEnd = ringEnd;
+					segments = [];
+					polygon = [];
+				  },
+				  polygonEnd: function() {
+					clip.point = point;
+					clip.lineStart = lineStart;
+					clip.lineEnd = lineEnd;
+					segments = merge(segments);
+					var startInside = polygonContains(polygon, rotatedStart);
+					if (segments.length) {
+					  if (!polygonStarted) sink.polygonStart(), polygonStarted = true;
+					  clipPolygon(segments, compareIntersection, startInside, interpolate, sink);
+					} else if (startInside) {
+					  if (!polygonStarted) sink.polygonStart(), polygonStarted = true;
+					  sink.lineStart();
+					  interpolate(null, null, 1, sink);
+					  sink.lineEnd();
+					}
+					if (polygonStarted) sink.polygonEnd(), polygonStarted = false;
+					segments = polygon = null;
+				  },
+				  sphere: function() {
+					sink.polygonStart();
+					sink.lineStart();
+					interpolate(null, null, 1, sink);
+					sink.lineEnd();
+					sink.polygonEnd();
+				  }
+				};
+
+				function point(lambda, phi) {
+				  var point = rotate(lambda, phi);
+				  if (pointVisible(lambda = point[0], phi = point[1])) sink.point(lambda, phi);
+				}
+
+				function pointLine(lambda, phi) {
+				  var point = rotate(lambda, phi);
+				  line.point(point[0], point[1]);
+				}
+
+				function lineStart() {
+				  clip.point = pointLine;
+				  line.lineStart();
+				}
+
+				function lineEnd() {
+				  clip.point = point;
+				  line.lineEnd();
+				}
+
+				function pointRing(lambda, phi) {
+				  ring.push([lambda, phi]);
+				  var point = rotate(lambda, phi);
+				  ringSink.point(point[0], point[1]);
+				}
+
+				function ringStart() {
+				  ringSink.lineStart();
+				  ring = [];
+				}
+
+				function ringEnd() {
+				  pointRing(ring[0][0], ring[0][1]);
+				  ringSink.lineEnd();
+
+				  var clean = ringSink.clean(),
+					  ringSegments = ringBuffer.result(),
+					  i, n = ringSegments.length, m,
+					  segment,
+					  point;
+
+				  ring.pop();
+				  polygon.push(ring);
+				  ring = null;
+
+				  if (!n) return;
+
+				  // No intersections.
+				  if (clean & 1) {
+					segment = ringSegments[0];
+					if ((m = segment.length - 1) > 0) {
+					  if (!polygonStarted) sink.polygonStart(), polygonStarted = true;
+					  sink.lineStart();
+					  for (i = 0; i < m; ++i) sink.point((point = segment[i])[0], point[1]);
+					  sink.lineEnd();
+					}
+					return;
+				  }
+
+				  // Rejoin connected segments.
+				  // TODO reuse ringBuffer.rejoin()?
+				  if (n > 1 && clean & 2) ringSegments.push(ringSegments.pop().concat(ringSegments.shift()));
+
+				  segments.push(ringSegments.filter(validSegment));
+				}
+
+				return clip;
+			  };
+			};
+
+			function validSegment(segment) {
+			  return segment.length > 1;
+			}
+
+			// Intersections are sorted along the clip edge. For both antimeridian cutting
+			// and circle clipping, the same comparison is used.
+			function compareIntersection(a, b) {
+			  return ((a = a.x)[0] < 0 ? a[1] - halfPi$3 - epsilon$4 : halfPi$3 - a[1])
+				   - ((b = b.x)[0] < 0 ? b[1] - halfPi$3 - epsilon$4 : halfPi$3 - b[1]);
+			}
+
+			var clipAntimeridian = clip(
+			  function() { return true; },
+			  clipAntimeridianLine,
+			  clipAntimeridianInterpolate,
+			  [-pi$4, -halfPi$3]
+			);
+
+			// Takes a line and cuts into visible segments. Return values: 0 - there were
+			// intersections or the line was empty; 1 - no intersections; 2 - there were
+			// intersections, and the first and last segments should be rejoined.
+			function clipAntimeridianLine(stream) {
+			  var lambda0 = NaN,
+				  phi0 = NaN,
+				  sign0 = NaN,
+				  clean; // no intersections
+
+			  return {
+				lineStart: function() {
+				  stream.lineStart();
+				  clean = 1;
+				},
+				point: function(lambda1, phi1) {
+				  var sign1 = lambda1 > 0 ? pi$4 : -pi$4,
+					  delta = abs(lambda1 - lambda0);
+				  if (abs(delta - pi$4) < epsilon$4) { // line crosses a pole
+					stream.point(lambda0, phi0 = (phi0 + phi1) / 2 > 0 ? halfPi$3 : -halfPi$3);
+					stream.point(sign0, phi0);
+					stream.lineEnd();
+					stream.lineStart();
+					stream.point(sign1, phi0);
+					stream.point(lambda1, phi0);
+					clean = 0;
+				  } else if (sign0 !== sign1 && delta >= pi$4) { // line crosses antimeridian
+					if (abs(lambda0 - sign0) < epsilon$4) lambda0 -= sign0 * epsilon$4; // handle degeneracies
+					if (abs(lambda1 - sign1) < epsilon$4) lambda1 -= sign1 * epsilon$4;
+					phi0 = clipAntimeridianIntersect(lambda0, phi0, lambda1, phi1);
+					stream.point(sign0, phi0);
+					stream.lineEnd();
+					stream.lineStart();
+					stream.point(sign1, phi0);
+					clean = 0;
+				  }
+				  stream.point(lambda0 = lambda1, phi0 = phi1);
+				  sign0 = sign1;
+				},
+				lineEnd: function() {
+				  stream.lineEnd();
+				  lambda0 = phi0 = NaN;
+				},
+				clean: function() {
+				  return 2 - clean; // if intersections, rejoin first and last segments
+				}
+			  };
+			}
+
+			function clipAntimeridianIntersect(lambda0, phi0, lambda1, phi1) {
+			  var cosPhi0,
+				  cosPhi1,
+				  sinLambda0Lambda1 = sin$1(lambda0 - lambda1);
+			  return abs(sinLambda0Lambda1) > epsilon$4
+				  ? atan((sin$1(phi0) * (cosPhi1 = cos$1(phi1)) * sin$1(lambda1)
+					  - sin$1(phi1) * (cosPhi0 = cos$1(phi0)) * sin$1(lambda0))
+					  / (cosPhi0 * cosPhi1 * sinLambda0Lambda1))
+				  : (phi0 + phi1) / 2;
+			}
+
+			function clipAntimeridianInterpolate(from, to, direction, stream) {
+			  var phi;
+			  if (from == null) {
+				phi = direction * halfPi$3;
+				stream.point(-pi$4, phi);
+				stream.point(0, phi);
+				stream.point(pi$4, phi);
+				stream.point(pi$4, 0);
+				stream.point(pi$4, -phi);
+				stream.point(0, -phi);
+				stream.point(-pi$4, -phi);
+				stream.point(-pi$4, 0);
+				stream.point(-pi$4, phi);
+			  } else if (abs(from[0] - to[0]) > epsilon$4) {
+				var lambda = from[0] < to[0] ? pi$4 : -pi$4;
+				phi = direction * lambda / 2;
+				stream.point(-lambda, phi);
+				stream.point(0, phi);
+				stream.point(lambda, phi);
+			  } else {
+				stream.point(to[0], to[1]);
+			  }
+			}
+
+			var clipCircle = function(radius, delta) {
+			  var cr = cos$1(radius),
+				  smallRadius = cr > 0,
+				  notHemisphere = abs(cr) > epsilon$4; // TODO optimise for this common case
+
+			  function interpolate(from, to, direction, stream) {
+				circleStream(stream, radius, delta, direction, from, to);
+			  }
+
+			  function visible(lambda, phi) {
+				return cos$1(lambda) * cos$1(phi) > cr;
+			  }
+
+			  // Takes a line and cuts into visible segments. Return values used for polygon
+			  // clipping: 0 - there were intersections or the line was empty; 1 - no
+			  // intersections 2 - there were intersections, and the first and last segments
+			  // should be rejoined.
+			  function clipLine(stream) {
+				var point0, // previous point
+					c0, // code for previous point
+					v0, // visibility of previous point
+					v00, // visibility of first point
+					clean; // no intersections
+				return {
+				  lineStart: function() {
+					v00 = v0 = false;
+					clean = 1;
+				  },
+				  point: function(lambda, phi) {
+					var point1 = [lambda, phi],
+						point2,
+						v = visible(lambda, phi),
+						c = smallRadius
+						  ? v ? 0 : code(lambda, phi)
+						  : v ? code(lambda + (lambda < 0 ? pi$4 : -pi$4), phi) : 0;
+					if (!point0 && (v00 = v0 = v)) stream.lineStart();
+					// Handle degeneracies.
+					// TODO ignore if not clipping polygons.
+					if (v !== v0) {
+					  point2 = intersect(point0, point1);
+					  if (pointEqual(point0, point2) || pointEqual(point1, point2)) {
+						point1[0] += epsilon$4;
+						point1[1] += epsilon$4;
+						v = visible(point1[0], point1[1]);
+					  }
+					}
+					if (v !== v0) {
+					  clean = 0;
+					  if (v) {
+						// outside going in
+						stream.lineStart();
+						point2 = intersect(point1, point0);
+						stream.point(point2[0], point2[1]);
+					  } else {
+						// inside going out
+						point2 = intersect(point0, point1);
+						stream.point(point2[0], point2[1]);
+						stream.lineEnd();
+					  }
+					  point0 = point2;
+					} else if (notHemisphere && point0 && smallRadius ^ v) {
+					  var t;
+					  // If the codes for two points are different, or are both zero,
+					  // and there this segment intersects with the small circle.
+					  if (!(c & c0) && (t = intersect(point1, point0, true))) {
+						clean = 0;
+						if (smallRadius) {
+						  stream.lineStart();
+						  stream.point(t[0][0], t[0][1]);
+						  stream.point(t[1][0], t[1][1]);
+						  stream.lineEnd();
+						} else {
+						  stream.point(t[1][0], t[1][1]);
+						  stream.lineEnd();
+						  stream.lineStart();
+						  stream.point(t[0][0], t[0][1]);
+						}
+					  }
+					}
+					if (v && (!point0 || !pointEqual(point0, point1))) {
+					  stream.point(point1[0], point1[1]);
+					}
+					point0 = point1, v0 = v, c0 = c;
+				  },
+				  lineEnd: function() {
+					if (v0) stream.lineEnd();
+					point0 = null;
+				  },
+				  // Rejoin first and last segments if there were intersections and the first
+				  // and last points were visible.
+				  clean: function() {
+					return clean | ((v00 && v0) << 1);
+				  }
+				};
+			  }
+
+			  // Intersects the great circle between a and b with the clip circle.
+			  function intersect(a, b, two) {
+				var pa = cartesian(a),
+					pb = cartesian(b);
+
+				// We have two planes, n1.p = d1 and n2.p = d2.
+				// Find intersection line p(t) = c1 n1 + c2 n2 + t (n1 ⨯ n2).
+				var n1 = [1, 0, 0], // normal
+					n2 = cartesianCross(pa, pb),
+					n2n2 = cartesianDot(n2, n2),
+					n1n2 = n2[0], // cartesianDot(n1, n2),
+					determinant = n2n2 - n1n2 * n1n2;
+
+				// Two polar points.
+				if (!determinant) return !two && a;
+
+				var c1 =  cr * n2n2 / determinant,
+					c2 = -cr * n1n2 / determinant,
+					n1xn2 = cartesianCross(n1, n2),
+					A = cartesianScale(n1, c1),
+					B = cartesianScale(n2, c2);
+				cartesianAddInPlace(A, B);
+
+				// Solve |p(t)|^2 = 1.
+				var u = n1xn2,
+					w = cartesianDot(A, u),
+					uu = cartesianDot(u, u),
+					t2 = w * w - uu * (cartesianDot(A, A) - 1);
+
+				if (t2 < 0) return;
+
+				var t = sqrt$1(t2),
+					q = cartesianScale(u, (-w - t) / uu);
+				cartesianAddInPlace(q, A);
+				q = spherical(q);
+
+				if (!two) return q;
+
+				// Two intersection points.
+				var lambda0 = a[0],
+					lambda1 = b[0],
+					phi0 = a[1],
+					phi1 = b[1],
+					z;
+
+				if (lambda1 < lambda0) z = lambda0, lambda0 = lambda1, lambda1 = z;
+
+				var delta = lambda1 - lambda0,
+					polar = abs(delta - pi$4) < epsilon$4,
+					meridian = polar || delta < epsilon$4;
+
+				if (!polar && phi1 < phi0) z = phi0, phi0 = phi1, phi1 = z;
+
+				// Check that the first point is between a and b.
+				if (meridian
+					? polar
+					  ? phi0 + phi1 > 0 ^ q[1] < (abs(q[0] - lambda0) < epsilon$4 ? phi0 : phi1)
+					  : phi0 <= q[1] && q[1] <= phi1
+					: delta > pi$4 ^ (lambda0 <= q[0] && q[0] <= lambda1)) {
+				  var q1 = cartesianScale(u, (-w + t) / uu);
+				  cartesianAddInPlace(q1, A);
+				  return [q, spherical(q1)];
+				}
+			  }
+
+			  // Generates a 4-bit vector representing the location of a point relative to
+			  // the small circle's bounding box.
+			  function code(lambda, phi) {
+				var r = smallRadius ? radius : pi$4 - radius,
+					code = 0;
+				if (lambda < -r) code |= 1; // left
+				else if (lambda > r) code |= 2; // right
+				if (phi < -r) code |= 4; // below
+				else if (phi > r) code |= 8; // above
+				return code;
+			  }
+
+			  return clip(visible, clipLine, interpolate, smallRadius ? [0, -radius] : [-pi$4, radius - pi$4]);
+			};
+
+			var transform$1 = function(methods) {
+			  return {
+				stream: transformer(methods)
+			  };
+			};
+
+			function transformer(methods) {
+			  return function(stream) {
+				var s = new TransformStream;
+				for (var key in methods) s[key] = methods[key];
+				s.stream = stream;
+				return s;
+			  };
+			}
+
+			function TransformStream() {}
+
+			TransformStream.prototype = {
+			  constructor: TransformStream,
+			  point: function(x, y) { this.stream.point(x, y); },
+			  sphere: function() { this.stream.sphere(); },
+			  lineStart: function() { this.stream.lineStart(); },
+			  lineEnd: function() { this.stream.lineEnd(); },
+			  polygonStart: function() { this.stream.polygonStart(); },
+			  polygonEnd: function() { this.stream.polygonEnd(); }
+			};
+
+			function fitExtent(projection, extent, object) {
+			  var w = extent[1][0] - extent[0][0],
+				  h = extent[1][1] - extent[0][1],
+				  clip = projection.clipExtent && projection.clipExtent();
+
+			  projection
+				  .scale(150)
+				  .translate([0, 0]);
+
+			  if (clip != null) projection.clipExtent(null);
+
+			  geoStream(object, projection.stream(boundsStream$1));
+
+			  var b = boundsStream$1.result(),
+				  k = Math.min(w / (b[1][0] - b[0][0]), h / (b[1][1] - b[0][1])),
+				  x = +extent[0][0] + (w - k * (b[1][0] + b[0][0])) / 2,
+				  y = +extent[0][1] + (h - k * (b[1][1] + b[0][1])) / 2;
+
+			  if (clip != null) projection.clipExtent(clip);
+
+			  return projection
+				  .scale(k * 150)
+				  .translate([x, y]);
+			}
+
+			function fitSize(projection, size, object) {
+			  return fitExtent(projection, [[0, 0], size], object);
+			}
+
+			var maxDepth = 16;
+			var cosMinDistance = cos$1(30 * radians); // cos(minimum angular distance)
+
+			var resample = function(project, delta2) {
+			  return +delta2 ? resample$1(project, delta2) : resampleNone(project);
+			};
+
+			function resampleNone(project) {
+			  return transformer({
+				point: function(x, y) {
+				  x = project(x, y);
+				  this.stream.point(x[0], x[1]);
+				}
+			  });
+			}
+
+			function resample$1(project, delta2) {
+
+			  function resampleLineTo(x0, y0, lambda0, a0, b0, c0, x1, y1, lambda1, a1, b1, c1, depth, stream) {
+				var dx = x1 - x0,
+					dy = y1 - y0,
+					d2 = dx * dx + dy * dy;
+				if (d2 > 4 * delta2 && depth--) {
+				  var a = a0 + a1,
+					  b = b0 + b1,
+					  c = c0 + c1,
+					  m = sqrt$1(a * a + b * b + c * c),
+					  phi2 = asin$1(c /= m),
+					  lambda2 = abs(abs(c) - 1) < epsilon$4 || abs(lambda0 - lambda1) < epsilon$4 ? (lambda0 + lambda1) / 2 : atan2(b, a),
+					  p = project(lambda2, phi2),
+					  x2 = p[0],
+					  y2 = p[1],
+					  dx2 = x2 - x0,
+					  dy2 = y2 - y0,
+					  dz = dy * dx2 - dx * dy2;
+				  if (dz * dz / d2 > delta2 // perpendicular projected distance
+					  || abs((dx * dx2 + dy * dy2) / d2 - 0.5) > 0.3 // midpoint close to an end
+					  || a0 * a1 + b0 * b1 + c0 * c1 < cosMinDistance) { // angular distance
+					resampleLineTo(x0, y0, lambda0, a0, b0, c0, x2, y2, lambda2, a /= m, b /= m, c, depth, stream);
+					stream.point(x2, y2);
+					resampleLineTo(x2, y2, lambda2, a, b, c, x1, y1, lambda1, a1, b1, c1, depth, stream);
+				  }
+				}
+			  }
+			  return function(stream) {
+				var lambda00, x00, y00, a00, b00, c00, // first point
+					lambda0, x0, y0, a0, b0, c0; // previous point
+
+				var resampleStream = {
+				  point: point,
+				  lineStart: lineStart,
+				  lineEnd: lineEnd,
+				  polygonStart: function() { stream.polygonStart(); resampleStream.lineStart = ringStart; },
+				  polygonEnd: function() { stream.polygonEnd(); resampleStream.lineStart = lineStart; }
+				};
+
+				function point(x, y) {
+				  x = project(x, y);
+				  stream.point(x[0], x[1]);
+				}
+
+				function lineStart() {
+				  x0 = NaN;
+				  resampleStream.point = linePoint;
+				  stream.lineStart();
+				}
+
+				function linePoint(lambda, phi) {
+				  var c = cartesian([lambda, phi]), p = project(lambda, phi);
+				  resampleLineTo(x0, y0, lambda0, a0, b0, c0, x0 = p[0], y0 = p[1], lambda0 = lambda, a0 = c[0], b0 = c[1], c0 = c[2], maxDepth, stream);
+				  stream.point(x0, y0);
+				}
+
+				function lineEnd() {
+				  resampleStream.point = point;
+				  stream.lineEnd();
+				}
+
+				function ringStart() {
+				  lineStart();
+				  resampleStream.point = ringPoint;
+				  resampleStream.lineEnd = ringEnd;
+				}
+
+				function ringPoint(lambda, phi) {
+				  linePoint(lambda00 = lambda, phi), x00 = x0, y00 = y0, a00 = a0, b00 = b0, c00 = c0;
+				  resampleStream.point = linePoint;
+				}
+
+				function ringEnd() {
+				  resampleLineTo(x0, y0, lambda0, a0, b0, c0, x00, y00, lambda00, a00, b00, c00, maxDepth, stream);
+				  resampleStream.lineEnd = lineEnd;
+				  lineEnd();
+				}
+
+				return resampleStream;
+			  };
+			}
+
+			var transformRadians = transformer({
+			  point: function(x, y) {
+				this.stream.point(x * radians, y * radians);
+			  }
+			});
+
+			function projection(project) {
+			  return projectionMutator(function() { return project; })();
+			}
+
+			function projectionMutator(projectAt) {
+			  var project,
+				  k = 150, // scale
+				  x = 480, y = 250, // translate
+				  dx, dy, lambda = 0, phi = 0, // center
+				  deltaLambda = 0, deltaPhi = 0, deltaGamma = 0, rotate, projectRotate, // rotate
+				  theta = null, preclip = clipAntimeridian, // clip angle
+				  x0 = null, y0, x1, y1, postclip = identity$7, // clip extent
+				  delta2 = 0.5, projectResample = resample(projectTransform, delta2), // precision
+				  cache,
+				  cacheStream;
+
+			  function projection(point) {
+				point = projectRotate(point[0] * radians, point[1] * radians);
+				return [point[0] * k + dx, dy - point[1] * k];
+			  }
+
+			  function invert(point) {
+				point = projectRotate.invert((point[0] - dx) / k, (dy - point[1]) / k);
+				return point && [point[0] * degrees$1, point[1] * degrees$1];
+			  }
+
+			  function projectTransform(x, y) {
+				return x = project(x, y), [x[0] * k + dx, dy - x[1] * k];
+			  }
+
+			  projection.stream = function(stream) {
+				return cache && cacheStream === stream ? cache : cache = transformRadians(preclip(rotate, projectResample(postclip(cacheStream = stream))));
+			  };
+
+			  projection.clipAngle = function(_) {
+				return arguments.length ? (preclip = +_ ? clipCircle(theta = _ * radians, 6 * radians) : (theta = null, clipAntimeridian), reset()) : theta * degrees$1;
+			  };
+
+			  projection.clipExtent = function(_) {
+				return arguments.length ? (postclip = _ == null ? (x0 = y0 = x1 = y1 = null, identity$7) : clipExtent(x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1]), reset()) : x0 == null ? null : [[x0, y0], [x1, y1]];
+			  };
+
+			  projection.scale = function(_) {
+				return arguments.length ? (k = +_, recenter()) : k;
+			  };
+
+			  projection.translate = function(_) {
+				return arguments.length ? (x = +_[0], y = +_[1], recenter()) : [x, y];
+			  };
+
+			  projection.center = function(_) {
+				return arguments.length ? (lambda = _[0] % 360 * radians, phi = _[1] % 360 * radians, recenter()) : [lambda * degrees$1, phi * degrees$1];
+			  };
+
+			  projection.rotate = function(_) {
+				return arguments.length ? (deltaLambda = _[0] % 360 * radians, deltaPhi = _[1] % 360 * radians, deltaGamma = _.length > 2 ? _[2] % 360 * radians : 0, recenter()) : [deltaLambda * degrees$1, deltaPhi * degrees$1, deltaGamma * degrees$1];
+			  };
+
+			  projection.precision = function(_) {
+				return arguments.length ? (projectResample = resample(projectTransform, delta2 = _ * _), reset()) : sqrt$1(delta2);
+			  };
+
+			  projection.fitExtent = function(extent, object) {
+				return fitExtent(projection, extent, object);
+			  };
+
+			  projection.fitSize = function(size, object) {
+				return fitSize(projection, size, object);
+			  };
+
+			  function recenter() {
+				projectRotate = compose(rotate = rotateRadians(deltaLambda, deltaPhi, deltaGamma), project);
+				var center = project(lambda, phi);
+				dx = x - center[0] * k;
+				dy = y + center[1] * k;
+				return reset();
+			  }
+
+			  function reset() {
+				cache = cacheStream = null;
+				return projection;
+			  }
+
+			  return function() {
+				project = projectAt.apply(this, arguments);
+				projection.invert = project.invert && invert;
+				return recenter();
+			  };
+			}
+
+			function conicProjection(projectAt) {
+			  var phi0 = 0,
+				  phi1 = pi$4 / 3,
+				  m = projectionMutator(projectAt),
+				  p = m(phi0, phi1);
+
+			  p.parallels = function(_) {
+				return arguments.length ? m(phi0 = _[0] * radians, phi1 = _[1] * radians) : [phi0 * degrees$1, phi1 * degrees$1];
+			  };
+
+			  return p;
+			}
+
+			function cylindricalEqualAreaRaw(phi0) {
+			  var cosPhi0 = cos$1(phi0);
+
+			  function forward(lambda, phi) {
+				return [lambda * cosPhi0, sin$1(phi) / cosPhi0];
+			  }
+
+			  forward.invert = function(x, y) {
+				return [x / cosPhi0, asin$1(y * cosPhi0)];
+			  };
+
+			  return forward;
+			}
+
+			function conicEqualAreaRaw(y0, y1) {
+			  var sy0 = sin$1(y0), n = (sy0 + sin$1(y1)) / 2;
+
+			  // Are the parallels symmetrical around the Equator?
+			  if (abs(n) < epsilon$4) return cylindricalEqualAreaRaw(y0);
+
+			  var c = 1 + sy0 * (2 * n - sy0), r0 = sqrt$1(c) / n;
+
+			  function project(x, y) {
+				var r = sqrt$1(c - 2 * n * sin$1(y)) / n;
+				return [r * sin$1(x *= n), r0 - r * cos$1(x)];
+			  }
+
+			  project.invert = function(x, y) {
+				var r0y = r0 - y;
+				return [atan2(x, abs(r0y)) / n * sign$1(r0y), asin$1((c - (x * x + r0y * r0y) * n * n) / (2 * n))];
+			  };
+
+			  return project;
+			}
+
+			var conicEqualArea = function() {
+			  return conicProjection(conicEqualAreaRaw)
+				  .scale(155.424)
+				  .center([0, 33.6442]);
+			};
+
+			var albers = function() {
+			  return conicEqualArea()
+				  .parallels([29.5, 45.5])
+				  .scale(1070)
+				  .translate([480, 250])
+				  .rotate([96, 0])
+				  .center([-0.6, 38.7]);
+			};
+
+			// The projections must have mutually exclusive clip regions on the sphere,
+			// as this will avoid emitting interleaving lines and polygons.
+			function multiplex(streams) {
+			  var n = streams.length;
+			  return {
+				point: function(x, y) { var i = -1; while (++i < n) streams[i].point(x, y); },
+				sphere: function() { var i = -1; while (++i < n) streams[i].sphere(); },
+				lineStart: function() { var i = -1; while (++i < n) streams[i].lineStart(); },
+				lineEnd: function() { var i = -1; while (++i < n) streams[i].lineEnd(); },
+				polygonStart: function() { var i = -1; while (++i < n) streams[i].polygonStart(); },
+				polygonEnd: function() { var i = -1; while (++i < n) streams[i].polygonEnd(); }
+			  };
+			}
+
+			// A composite projection for the United States, configured by default for
+			// 960×500. The projection also works quite well at 960×600 if you change the
+			// scale to 1285 and adjust the translate accordingly. The set of standard
+			// parallels for each region comes from USGS, which is published here:
+			// http://egsc.usgs.gov/isb/pubs/MapProjections/projections.html#albers
+			var albersUsa = function() {
+			  var cache,
+				  cacheStream,
+				  lower48 = albers(), lower48Point,
+				  alaska = conicEqualArea().rotate([154, 0]).center([-2, 58.5]).parallels([55, 65]), alaskaPoint, // EPSG:3338
+				  hawaii = conicEqualArea().rotate([157, 0]).center([-3, 19.9]).parallels([8, 18]), hawaiiPoint, // ESRI:102007
+				  point, pointStream = {point: function(x, y) { point = [x, y]; }};
+
+			  function albersUsa(coordinates) {
+				var x = coordinates[0], y = coordinates[1];
+				return point = null,
+					(lower48Point.point(x, y), point)
+					|| (alaskaPoint.point(x, y), point)
+					|| (hawaiiPoint.point(x, y), point);
+			  }
+
+			  albersUsa.invert = function(coordinates) {
+				var k = lower48.scale(),
+					t = lower48.translate(),
+					x = (coordinates[0] - t[0]) / k,
+					y = (coordinates[1] - t[1]) / k;
+				return (y >= 0.120 && y < 0.234 && x >= -0.425 && x < -0.214 ? alaska
+					: y >= 0.166 && y < 0.234 && x >= -0.214 && x < -0.115 ? hawaii
+					: lower48).invert(coordinates);
+			  };
+
+			  albersUsa.stream = function(stream) {
+				return cache && cacheStream === stream ? cache : cache = multiplex([lower48.stream(cacheStream = stream), alaska.stream(stream), hawaii.stream(stream)]);
+			  };
+
+			  albersUsa.precision = function(_) {
+				if (!arguments.length) return lower48.precision();
+				lower48.precision(_), alaska.precision(_), hawaii.precision(_);
+				return reset();
+			  };
+
+			  albersUsa.scale = function(_) {
+				if (!arguments.length) return lower48.scale();
+				lower48.scale(_), alaska.scale(_ * 0.35), hawaii.scale(_);
+				return albersUsa.translate(lower48.translate());
+			  };
+
+			  albersUsa.translate = function(_) {
+				if (!arguments.length) return lower48.translate();
+				var k = lower48.scale(), x = +_[0], y = +_[1];
+
+				lower48Point = lower48
+					.translate(_)
+					.clipExtent([[x - 0.455 * k, y - 0.238 * k], [x + 0.455 * k, y + 0.238 * k]])
+					.stream(pointStream);
+
+				alaskaPoint = alaska
+					.translate([x - 0.307 * k, y + 0.201 * k])
+					.clipExtent([[x - 0.425 * k + epsilon$4, y + 0.120 * k + epsilon$4], [x - 0.214 * k - epsilon$4, y + 0.234 * k - epsilon$4]])
+					.stream(pointStream);
+
+				hawaiiPoint = hawaii
+					.translate([x - 0.205 * k, y + 0.212 * k])
+					.clipExtent([[x - 0.214 * k + epsilon$4, y + 0.166 * k + epsilon$4], [x - 0.115 * k - epsilon$4, y + 0.234 * k - epsilon$4]])
+					.stream(pointStream);
+
+				return reset();
+			  };
+
+			  albersUsa.fitExtent = function(extent, object) {
+				return fitExtent(albersUsa, extent, object);
+			  };
+
+			  albersUsa.fitSize = function(size, object) {
+				return fitSize(albersUsa, size, object);
+			  };
+
+			  function reset() {
+				cache = cacheStream = null;
+				return albersUsa;
+			  }
+
+			  return albersUsa.scale(1070);
+			};
+
+			function azimuthalRaw(scale) {
+			  return function(x, y) {
+				var cx = cos$1(x),
+					cy = cos$1(y),
+					k = scale(cx * cy);
+				return [
+				  k * cy * sin$1(x),
+				  k * sin$1(y)
+				];
+			  }
+			}
+
+			function azimuthalInvert(angle) {
+			  return function(x, y) {
+				var z = sqrt$1(x * x + y * y),
+					c = angle(z),
+					sc = sin$1(c),
+					cc = cos$1(c);
+				return [
+				  atan2(x * sc, z * cc),
+				  asin$1(z && y * sc / z)
+				];
+			  }
+			}
+
+			var azimuthalEqualAreaRaw = azimuthalRaw(function(cxcy) {
+			  return sqrt$1(2 / (1 + cxcy));
+			});
+
+			azimuthalEqualAreaRaw.invert = azimuthalInvert(function(z) {
+			  return 2 * asin$1(z / 2);
+			});
+
+			var azimuthalEqualArea = function() {
+			  return projection(azimuthalEqualAreaRaw)
+				  .scale(124.75)
+				  .clipAngle(180 - 1e-3);
+			};
+
+			var azimuthalEquidistantRaw = azimuthalRaw(function(c) {
+			  return (c = acos(c)) && c / sin$1(c);
+			});
+
+			azimuthalEquidistantRaw.invert = azimuthalInvert(function(z) {
+			  return z;
+			});
+
+			var azimuthalEquidistant = function() {
+			  return projection(azimuthalEquidistantRaw)
+				  .scale(79.4188)
+				  .clipAngle(180 - 1e-3);
+			};
+
+			function mercatorRaw(lambda, phi) {
+			  return [lambda, log$1(tan((halfPi$3 + phi) / 2))];
+			}
+
+			mercatorRaw.invert = function(x, y) {
+			  return [x, 2 * atan(exp(y)) - halfPi$3];
+			};
+
+			var mercator = function() {
+			  return mercatorProjection(mercatorRaw)
+				  .scale(961 / tau$4);
+			};
+
+			function mercatorProjection(project) {
+			  var m = projection(project),
+				  scale = m.scale,
+				  translate = m.translate,
+				  clipExtent = m.clipExtent,
+				  clipAuto;
+
+			  m.scale = function(_) {
+				return arguments.length ? (scale(_), clipAuto && m.clipExtent(null), m) : scale();
+			  };
+
+			  m.translate = function(_) {
+				return arguments.length ? (translate(_), clipAuto && m.clipExtent(null), m) : translate();
+			  };
+
+			  m.clipExtent = function(_) {
+				if (!arguments.length) return clipAuto ? null : clipExtent();
+				if (clipAuto = _ == null) {
+				  var k = pi$4 * scale(),
+					  t = translate();
+				  _ = [[t[0] - k, t[1] - k], [t[0] + k, t[1] + k]];
+				}
+				clipExtent(_);
+				return m;
+			  };
+
+			  return m.clipExtent(null);
+			}
+
+			function tany(y) {
+			  return tan((halfPi$3 + y) / 2);
+			}
+
+			function conicConformalRaw(y0, y1) {
+			  var cy0 = cos$1(y0),
+				  n = y0 === y1 ? sin$1(y0) : log$1(cy0 / cos$1(y1)) / log$1(tany(y1) / tany(y0)),
+				  f = cy0 * pow$1(tany(y0), n) / n;
+
+			  if (!n) return mercatorRaw;
+
+			  function project(x, y) {
+				if (f > 0) { if (y < -halfPi$3 + epsilon$4) y = -halfPi$3 + epsilon$4; }
+				else { if (y > halfPi$3 - epsilon$4) y = halfPi$3 - epsilon$4; }
+				var r = f / pow$1(tany(y), n);
+				return [r * sin$1(n * x), f - r * cos$1(n * x)];
+			  }
+
+			  project.invert = function(x, y) {
+				var fy = f - y, r = sign$1(n) * sqrt$1(x * x + fy * fy);
+				return [atan2(x, abs(fy)) / n * sign$1(fy), 2 * atan(pow$1(f / r, 1 / n)) - halfPi$3];
+			  };
+
+			  return project;
+			}
+
+			var conicConformal = function() {
+			  return conicProjection(conicConformalRaw)
+				  .scale(109.5)
+				  .parallels([30, 30]);
+			};
+
+			function equirectangularRaw(lambda, phi) {
+			  return [lambda, phi];
+			}
+
+			equirectangularRaw.invert = equirectangularRaw;
+
+			var equirectangular = function() {
+			  return projection(equirectangularRaw)
+				  .scale(152.63);
+			};
+
+			function conicEquidistantRaw(y0, y1) {
+			  var cy0 = cos$1(y0),
+				  n = y0 === y1 ? sin$1(y0) : (cy0 - cos$1(y1)) / (y1 - y0),
+				  g = cy0 / n + y0;
+
+			  if (abs(n) < epsilon$4) return equirectangularRaw;
+
+			  function project(x, y) {
+				var gy = g - y, nx = n * x;
+				return [gy * sin$1(nx), g - gy * cos$1(nx)];
+			  }
+
+			  project.invert = function(x, y) {
+				var gy = g - y;
+				return [atan2(x, abs(gy)) / n * sign$1(gy), g - sign$1(n) * sqrt$1(x * x + gy * gy)];
+			  };
+
+			  return project;
+			}
+
+			var conicEquidistant = function() {
+			  return conicProjection(conicEquidistantRaw)
+				  .scale(131.154)
+				  .center([0, 13.9389]);
+			};
+
+			function gnomonicRaw(x, y) {
+			  var cy = cos$1(y), k = cos$1(x) * cy;
+			  return [cy * sin$1(x) / k, sin$1(y) / k];
+			}
+
+			gnomonicRaw.invert = azimuthalInvert(atan);
+
+			var gnomonic = function() {
+			  return projection(gnomonicRaw)
+				  .scale(144.049)
+				  .clipAngle(60);
+			};
+
+			function scaleTranslate(k, tx, ty) {
+			  return k === 1 && tx === 0 && ty === 0 ? identity$7 : transformer({
+				point: function(x, y) {
+				  this.stream.point(x * k + tx, y * k + ty);
+				}
+			  });
+			}
+
+			var identity$8 = function() {
+			  var k = 1, tx = 0, ty = 0, transform = identity$7, // scale and translate
+				  x0 = null, y0, x1, y1, clip = identity$7, // clip extent
+				  cache,
+				  cacheStream,
+				  projection;
+
+			  function reset() {
+				cache = cacheStream = null;
+				return projection;
+			  }
+
+			  return projection = {
+				stream: function(stream) {
+				  return cache && cacheStream === stream ? cache : cache = transform(clip(cacheStream = stream));
+				},
+				clipExtent: function(_) {
+				  return arguments.length ? (clip = _ == null ? (x0 = y0 = x1 = y1 = null, identity$7) : clipExtent(x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1]), reset()) : x0 == null ? null : [[x0, y0], [x1, y1]];
+				},
+				scale: function(_) {
+				  return arguments.length ? (transform = scaleTranslate(k = +_, tx, ty), reset()) : k;
+				},
+				translate: function(_) {
+				  return arguments.length ? (transform = scaleTranslate(k, tx = +_[0], ty = +_[1]), reset()) : [tx, ty];
+				},
+				fitExtent: function(extent, object) {
+				  return fitExtent(projection, extent, object);
+				},
+				fitSize: function(size, object) {
+				  return fitSize(projection, size, object);
+				}
+			  };
+			};
+
+			function orthographicRaw(x, y) {
+			  return [cos$1(y) * sin$1(x), sin$1(y)];
+			}
+
+			orthographicRaw.invert = azimuthalInvert(asin$1);
+
+			var orthographic = function() {
+			  return projection(orthographicRaw)
+				  .scale(249.5)
+				  .clipAngle(90 + epsilon$4);
+			};
+
+			function stereographicRaw(x, y) {
+			  var cy = cos$1(y), k = 1 + cos$1(x) * cy;
+			  return [cy * sin$1(x) / k, sin$1(y) / k];
+			}
+
+			stereographicRaw.invert = azimuthalInvert(function(z) {
+			  return 2 * atan(z);
+			});
+
+			var stereographic = function() {
+			  return projection(stereographicRaw)
+				  .scale(250)
+				  .clipAngle(142);
+			};
+
+			function transverseMercatorRaw(lambda, phi) {
+			  return [log$1(tan((halfPi$3 + phi) / 2)), -lambda];
+			}
+
+			transverseMercatorRaw.invert = function(x, y) {
+			  return [-y, 2 * atan(exp(x)) - halfPi$3];
+			};
+
+			var transverseMercator = function() {
+			  var m = mercatorProjection(transverseMercatorRaw),
+				  center = m.center,
+				  rotate = m.rotate;
+
+			  m.center = function(_) {
+				return arguments.length ? center([-_[1], _[0]]) : (_ = center(), [_[1], -_[0]]);
+			  };
+
+			  m.rotate = function(_) {
+				return arguments.length ? rotate([_[0], _[1], _.length > 2 ? _[2] + 90 : 90]) : (_ = rotate(), [_[0], _[1], _[2] - 90]);
+			  };
+
+			  return rotate([0, 0, 90])
+				  .scale(159.155);
+			};
+
+			exports.version = version;
+			exports.bisect = bisectRight;
+			exports.bisectRight = bisectRight;
+			exports.bisectLeft = bisectLeft;
+			exports.ascending = ascending;
+			exports.bisector = bisector;
+			exports.descending = descending;
+			exports.deviation = deviation;
+			exports.extent = extent;
+			exports.histogram = histogram;
+			exports.thresholdFreedmanDiaconis = freedmanDiaconis;
+			exports.thresholdScott = scott;
+			exports.thresholdSturges = sturges;
+			exports.max = max;
+			exports.mean = mean;
+			exports.median = median;
+			exports.merge = merge;
+			exports.min = min;
+			exports.pairs = pairs;
+			exports.permute = permute;
+			exports.quantile = threshold;
+			exports.range = range;
+			exports.scan = scan;
+			exports.shuffle = shuffle;
+			exports.sum = sum;
+			exports.ticks = ticks;
+			exports.tickStep = tickStep;
+			exports.transpose = transpose;
+			exports.variance = variance;
+			exports.zip = zip;
+			exports.entries = entries;
+			exports.keys = keys;
+			exports.values = values;
+			exports.map = map$1;
+			exports.set = set;
+			exports.nest = nest;
+			exports.randomUniform = uniform;
+			exports.randomNormal = normal;
+			exports.randomLogNormal = logNormal;
+			exports.randomBates = bates;
+			exports.randomIrwinHall = irwinHall;
+			exports.randomExponential = exponential;
+			exports.easeLinear = linear;
+			exports.easeQuad = quadInOut;
+			exports.easeQuadIn = quadIn;
+			exports.easeQuadOut = quadOut;
+			exports.easeQuadInOut = quadInOut;
+			exports.easeCubic = cubicInOut;
+			exports.easeCubicIn = cubicIn;
+			exports.easeCubicOut = cubicOut;
+			exports.easeCubicInOut = cubicInOut;
+			exports.easePoly = polyInOut;
+			exports.easePolyIn = polyIn;
+			exports.easePolyOut = polyOut;
+			exports.easePolyInOut = polyInOut;
+			exports.easeSin = sinInOut;
+			exports.easeSinIn = sinIn;
+			exports.easeSinOut = sinOut;
+			exports.easeSinInOut = sinInOut;
+			exports.easeExp = expInOut;
+			exports.easeExpIn = expIn;
+			exports.easeExpOut = expOut;
+			exports.easeExpInOut = expInOut;
+			exports.easeCircle = circleInOut;
+			exports.easeCircleIn = circleIn;
+			exports.easeCircleOut = circleOut;
+			exports.easeCircleInOut = circleInOut;
+			exports.easeBounce = bounceOut;
+			exports.easeBounceIn = bounceIn;
+			exports.easeBounceOut = bounceOut;
+			exports.easeBounceInOut = bounceInOut;
+			exports.easeBack = backInOut;
+			exports.easeBackIn = backIn;
+			exports.easeBackOut = backOut;
+			exports.easeBackInOut = backInOut;
+			exports.easeElastic = elasticOut;
+			exports.easeElasticIn = elasticIn;
+			exports.easeElasticOut = elasticOut;
+			exports.easeElasticInOut = elasticInOut;
+			exports.polygonArea = area;
+			exports.polygonCentroid = centroid;
+			exports.polygonHull = hull;
+			exports.polygonContains = contains;
+			exports.polygonLength = length$1;
+			exports.path = path;
+			exports.quadtree = quadtree;
+			exports.queue = queue;
+			exports.arc = arc;
+			exports.area = area$1;
+			exports.line = line;
+			exports.pie = pie;
+			exports.radialArea = radialArea;
+			exports.radialLine = radialLine$1;
+			exports.symbol = symbol;
+			exports.symbols = symbols;
+			exports.symbolCircle = circle;
+			exports.symbolCross = cross$1;
+			exports.symbolDiamond = diamond;
+			exports.symbolSquare = square;
+			exports.symbolStar = star;
+			exports.symbolTriangle = triangle;
+			exports.symbolWye = wye;
+			exports.curveBasisClosed = basisClosed;
+			exports.curveBasisOpen = basisOpen;
+			exports.curveBasis = basis;
+			exports.curveBundle = bundle;
+			exports.curveCardinalClosed = cardinalClosed;
+			exports.curveCardinalOpen = cardinalOpen;
+			exports.curveCardinal = cardinal;
+			exports.curveCatmullRomClosed = catmullRomClosed;
+			exports.curveCatmullRomOpen = catmullRomOpen;
+			exports.curveCatmullRom = catmullRom;
+			exports.curveLinearClosed = linearClosed;
+			exports.curveLinear = curveLinear;
+			exports.curveMonotoneX = monotoneX;
+			exports.curveMonotoneY = monotoneY;
+			exports.curveNatural = natural;
+			exports.curveStep = step;
+			exports.curveStepAfter = stepAfter;
+			exports.curveStepBefore = stepBefore;
+			exports.stack = stack;
+			exports.stackOffsetExpand = expand;
+			exports.stackOffsetNone = none;
+			exports.stackOffsetSilhouette = silhouette;
+			exports.stackOffsetWiggle = wiggle;
+			exports.stackOrderAscending = ascending$1;
+			exports.stackOrderDescending = descending$2;
+			exports.stackOrderInsideOut = insideOut;
+			exports.stackOrderNone = none$1;
+			exports.stackOrderReverse = reverse;
+			exports.color = color;
+			exports.rgb = rgb;
+			exports.hsl = hsl;
+			exports.lab = lab;
+			exports.hcl = hcl;
+			exports.cubehelix = cubehelix;
+			exports.interpolate = interpolate;
+			exports.interpolateArray = array$1;
+			exports.interpolateDate = date;
+			exports.interpolateNumber = interpolateNumber;
+			exports.interpolateObject = object;
+			exports.interpolateRound = interpolateRound;
+			exports.interpolateString = interpolateString;
+			exports.interpolateTransformCss = interpolateTransformCss;
+			exports.interpolateTransformSvg = interpolateTransformSvg;
+			exports.interpolateZoom = interpolateZoom;
+			exports.interpolateRgb = interpolateRgb;
+			exports.interpolateRgbBasis = rgbBasis;
+			exports.interpolateRgbBasisClosed = rgbBasisClosed;
+			exports.interpolateHsl = hsl$2;
+			exports.interpolateHslLong = hslLong;
+			exports.interpolateLab = lab$1;
+			exports.interpolateHcl = hcl$2;
+			exports.interpolateHclLong = hclLong;
+			exports.interpolateCubehelix = cubehelix$2;
+			exports.interpolateCubehelixLong = cubehelixLong;
+			exports.interpolateBasis = basis$2;
+			exports.interpolateBasisClosed = basisClosed$1;
+			exports.quantize = quantize;
+			exports.dispatch = dispatch;
+			exports.dsvFormat = dsv;
+			exports.csvParse = csvParse;
+			exports.csvParseRows = csvParseRows;
+			exports.csvFormat = csvFormat;
+			exports.csvFormatRows = csvFormatRows;
+			exports.tsvParse = tsvParse;
+			exports.tsvParseRows = tsvParseRows;
+			exports.tsvFormat = tsvFormat;
+			exports.tsvFormatRows = tsvFormatRows;
+			exports.request = request;
+			exports.html = html;
+			exports.json = json;
+			exports.text = text;
+			exports.xml = xml;
+			exports.csv = csv$1;
+			exports.tsv = tsv$1;
+			exports.now = now;
+			exports.timer = timer;
+			exports.timerFlush = timerFlush;
+			exports.timeout = timeout$1;
+			exports.interval = interval$1;
+			exports.timeInterval = newInterval;
+			exports.timeMillisecond = millisecond;
+			exports.timeMilliseconds = milliseconds;
+			exports.timeSecond = second;
+			exports.timeSeconds = seconds;
+			exports.timeMinute = minute;
+			exports.timeMinutes = minutes;
+			exports.timeHour = hour;
+			exports.timeHours = hours;
+			exports.timeDay = day;
+			exports.timeDays = days;
+			exports.timeWeek = sunday;
+			exports.timeWeeks = sundays;
+			exports.timeSunday = sunday;
+			exports.timeSundays = sundays;
+			exports.timeMonday = monday;
+			exports.timeMondays = mondays;
+			exports.timeTuesday = tuesday;
+			exports.timeTuesdays = tuesdays;
+			exports.timeWednesday = wednesday;
+			exports.timeWednesdays = wednesdays;
+			exports.timeThursday = thursday;
+			exports.timeThursdays = thursdays;
+			exports.timeFriday = friday;
+			exports.timeFridays = fridays;
+			exports.timeSaturday = saturday;
+			exports.timeSaturdays = saturdays;
+			exports.timeMonth = month;
+			exports.timeMonths = months;
+			exports.timeYear = year;
+			exports.timeYears = years;
+			exports.utcMillisecond = millisecond;
+			exports.utcMilliseconds = milliseconds;
+			exports.utcSecond = second;
+			exports.utcSeconds = seconds;
+			exports.utcMinute = utcMinute;
+			exports.utcMinutes = utcMinutes;
+			exports.utcHour = utcHour;
+			exports.utcHours = utcHours;
+			exports.utcDay = utcDay;
+			exports.utcDays = utcDays;
+			exports.utcWeek = utcSunday;
+			exports.utcWeeks = utcSundays;
+			exports.utcSunday = utcSunday;
+			exports.utcSundays = utcSundays;
+			exports.utcMonday = utcMonday;
+			exports.utcMondays = utcMondays;
+			exports.utcTuesday = utcTuesday;
+			exports.utcTuesdays = utcTuesdays;
+			exports.utcWednesday = utcWednesday;
+			exports.utcWednesdays = utcWednesdays;
+			exports.utcThursday = utcThursday;
+			exports.utcThursdays = utcThursdays;
+			exports.utcFriday = utcFriday;
+			exports.utcFridays = utcFridays;
+			exports.utcSaturday = utcSaturday;
+			exports.utcSaturdays = utcSaturdays;
+			exports.utcMonth = utcMonth;
+			exports.utcMonths = utcMonths;
+			exports.utcYear = utcYear;
+			exports.utcYears = utcYears;
+			exports.formatLocale = formatLocale;
+			exports.formatDefaultLocale = defaultLocale;
+			exports.formatSpecifier = formatSpecifier;
+			exports.precisionFixed = precisionFixed;
+			exports.precisionPrefix = precisionPrefix;
+			exports.precisionRound = precisionRound;
+			exports.isoFormat = formatIso;
+			exports.isoParse = parseIso;
+			exports.timeFormatLocale = formatLocale$1;
+			exports.timeFormatDefaultLocale = defaultLocale$1;
+			exports.scaleBand = band;
+			exports.scalePoint = point$4;
+			exports.scaleIdentity = identity$4;
+			exports.scaleLinear = linear$2;
+			exports.scaleLog = log;
+			exports.scaleOrdinal = ordinal;
+			exports.scaleImplicit = implicit;
+			exports.scalePow = pow;
+			exports.scaleSqrt = sqrt;
+			exports.scaleQuantile = quantile$$1;
+			exports.scaleQuantize = quantize$1;
+			exports.scaleThreshold = threshold$1;
+			exports.scaleTime = time;
+			exports.scaleUtc = utcTime;
+			exports.schemeCategory10 = category10;
+			exports.schemeCategory20b = category20b;
+			exports.schemeCategory20c = category20c;
+			exports.schemeCategory20 = category20;
+			exports.scaleSequential = sequential;
+			exports.interpolateCubehelixDefault = cubehelix$3;
+			exports.interpolateRainbow = rainbow$1;
+			exports.interpolateWarm = warm;
+			exports.interpolateCool = cool;
+			exports.interpolateViridis = viridis;
+			exports.interpolateMagma = magma;
+			exports.interpolateInferno = inferno;
+			exports.interpolatePlasma = plasma;
+			exports.creator = creator;
+			exports.customEvent = customEvent;
+			exports.local = local;
+			exports.matcher = matcher$1;
+			exports.mouse = mouse;
+			exports.namespace = namespace;
+			exports.namespaces = namespaces;
+			exports.select = select;
+			exports.selectAll = selectAll;
+			exports.selection = selection;
+			exports.selector = selector;
+			exports.selectorAll = selectorAll;
+			exports.touch = touch;
+			exports.touches = touches;
+			exports.window = window;
+			exports.active = active;
+			exports.interrupt = interrupt;
+			exports.transition = transition;
+			exports.axisTop = axisTop;
+			exports.axisRight = axisRight;
+			exports.axisBottom = axisBottom;
+			exports.axisLeft = axisLeft;
+			exports.cluster = cluster;
+			exports.hierarchy = hierarchy;
+			exports.pack = index;
+			exports.packSiblings = siblings;
+			exports.packEnclose = enclose;
+			exports.partition = partition;
+			exports.stratify = stratify;
+			exports.tree = tree;
+			exports.treemap = index$1;
+			exports.treemapBinary = binary;
+			exports.treemapDice = treemapDice;
+			exports.treemapSlice = treemapSlice;
+			exports.treemapSliceDice = sliceDice;
+			exports.treemapSquarify = squarify;
+			exports.treemapResquarify = resquarify;
+			exports.forceCenter = center$1;
+			exports.forceCollide = collide;
+			exports.forceLink = link;
+			exports.forceManyBody = manyBody;
+			exports.forceSimulation = simulation;
+			exports.forceX = x$3;
+			exports.forceY = y$3;
+			exports.drag = drag;
+			exports.dragDisable = dragDisable;
+			exports.dragEnable = yesdrag;
+			exports.voronoi = voronoi;
+			exports.zoom = zoom;
+			exports.zoomIdentity = identity$6;
+			exports.zoomTransform = transform;
+			exports.brush = brush;
+			exports.brushX = brushX;
+			exports.brushY = brushY;
+			exports.brushSelection = brushSelection;
+			exports.chord = chord;
+			exports.ribbon = ribbon;
+			exports.geoAlbers = albers;
+			exports.geoAlbersUsa = albersUsa;
+			exports.geoArea = area$2;
+			exports.geoAzimuthalEqualArea = azimuthalEqualArea;
+			exports.geoAzimuthalEqualAreaRaw = azimuthalEqualAreaRaw;
+			exports.geoAzimuthalEquidistant = azimuthalEquidistant;
+			exports.geoAzimuthalEquidistantRaw = azimuthalEquidistantRaw;
+			exports.geoBounds = bounds;
+			exports.geoCentroid = centroid$1;
+			exports.geoCircle = circle$1;
+			exports.geoClipExtent = extent$1;
+			exports.geoConicConformal = conicConformal;
+			exports.geoConicConformalRaw = conicConformalRaw;
+			exports.geoConicEqualArea = conicEqualArea;
+			exports.geoConicEqualAreaRaw = conicEqualAreaRaw;
+			exports.geoConicEquidistant = conicEquidistant;
+			exports.geoConicEquidistantRaw = conicEquidistantRaw;
+			exports.geoDistance = distance;
+			exports.geoEquirectangular = equirectangular;
+			exports.geoEquirectangularRaw = equirectangularRaw;
+			exports.geoGnomonic = gnomonic;
+			exports.geoGnomonicRaw = gnomonicRaw;
+			exports.geoGraticule = graticule;
+			exports.geoGraticule10 = graticule10;
+			exports.geoIdentity = identity$8;
+			exports.geoInterpolate = interpolate$2;
+			exports.geoLength = length$2;
+			exports.geoMercator = mercator;
+			exports.geoMercatorRaw = mercatorRaw;
+			exports.geoOrthographic = orthographic;
+			exports.geoOrthographicRaw = orthographicRaw;
+			exports.geoPath = index$3;
+			exports.geoProjection = projection;
+			exports.geoProjectionMutator = projectionMutator;
+			exports.geoRotation = rotation;
+			exports.geoStereographic = stereographic;
+			exports.geoStereographicRaw = stereographicRaw;
+			exports.geoStream = geoStream;
+			exports.geoTransform = transform$1;
+			exports.geoTransverseMercator = transverseMercator;
+			exports.geoTransverseMercatorRaw = transverseMercatorRaw;
+
+			Object.defineProperty(exports, '__esModule', { value: true });
+
+			})));
+
+
+			//aigner: HERE IS WHERE IT ALL STARTS!!!
+			},{}],2:[function(require,module,exports){
+				
+
+
+				
+			var d3 = require('d3');
+
+			var PULSE_DURATION = 700;
+			var SUB_ANIM_DELAY = 200;
+			var ACTIVE_COLOR = d3.rgb("seagreen");
+
+			function Animation(xdsms, rootId, delay) {
+			  this.rootId = rootId;
+			  if (typeof (rootId) === 'undefined') {
+				this.rootId = 'root';
+			  }
+			  this.root = xdsms[this.rootId];
+			  this.xdsms = xdsms;
+			  this.duration = PULSE_DURATION;
+			  this.initialDelay = delay || 0;
+			}
+
+			Animation.prototype._pulse = function(delay, toBeSelected, option) {
+			  var sel = d3.select("svg." + this.rootId)
+						  .selectAll(toBeSelected)
+						  .transition().delay(delay);
+			  if (option !== "out") {
+				sel = sel.transition().duration(200)
+						.style('stroke-width', '8px')
+						.style('stroke', ACTIVE_COLOR)
+						.style('fill', function(d) {
+						  if (d.id) {
+							return ACTIVE_COLOR.brighter();
+						  }});
+			  }
+			  if (option !== "in") {
+				sel.transition().duration(3 * PULSE_DURATION)
+						.style('stroke-width', null)
+						.style('stroke', null)
+						.style('fill', null);
+			  }
+			};
+
+			Animation.prototype._animate = function() {
+			  var self = this;
+			  var delay = this.initialDelay;
+			  var animDelay = SUB_ANIM_DELAY;
+			  var graph = self.xdsms[self.rootId].graph;
+			  
+			  var title = d3.select("svg." + self.rootId).select("g.title");
+			  title.select("text").transition().delay(delay).style("fill", ACTIVE_COLOR);
+			  d3.select("svg." + self.rootId).select("rect.border")
+				.transition().delay(delay)
+				  .style("stroke-width", '5px').duration(200)
+				.transition().duration(1000)
+				  .style("stroke", 'black').style("stroke-width", '0px');
+
+			  graph.nodesByStep.forEach(function(nodesAtStep, n, nodesByStep) {
+				var offsets = [];
+				nodesAtStep.forEach(function(nodeId) {
+				  var elapsed = delay + n * PULSE_DURATION;
+				  if (n > 0) {
+					nodesByStep[n-1].forEach(function(prevNodeId) { // eslint-disable-line space-infix-ops
+					  var from = graph.idxOf(prevNodeId);
+					  var to = graph.idxOf(nodeId);
+					  self._pulse(elapsed,"polyline.link_" + from + "_" + to);
+					});
+				  }
+				  //aigner: Look for existing xdsms/Sub-xdsms. Only show those, which are expanded                  
+				  var gnode = "g." + nodeId;
+				  var nodeSel = d3.select("svg." + self.rootId).select(gnode);
+				  var scnId = graph.getNode(nodeId).getScenarioId();
+				  if (nodeSel.classed("mdo") && self.xdsms[scnId]) 
+				  {
+					  self._pulse(elapsed, gnode + " > rect", "in");
+					  var anim = new Animation(self.xdsms, scnId, elapsed + animDelay);
+					  var offset = anim._animate();
+					  offsets.push(offset);
+					  self._pulse(offset + elapsed + animDelay, gnode + " > rect", "out");
+				  } 
+				  else 
+				  {
+					  self._pulse(elapsed, gnode + " > rect");
+				  }
+				}, this);
+
+				if (offsets.length > 0) {
+				  delay += Math.max.apply(null, offsets);
+				}
+				delay += animDelay;
+			  }, this);
+				
+			  title.select("text").transition()
+				.delay(graph.nodesByStep.length * PULSE_DURATION + delay)
+				.style("fill", null);
+
+			  return graph.nodesByStep.length * PULSE_DURATION;
+			};
+
+			Animation.prototype.run = function() {
+			  this._animate();
+			};
+
+			module.exports = Animation;
+
+			},{"d3":1}],3:[function(require,module,exports){
+			var _U_ = "_U_";
+			var MULTI_TYPE = "_multi";
+
+			//aigner: Node() constructor additionally gets the "xdsm"
+			function Node(xdsm, id, uID, name, type, metadata) {                
+			  var splitUndef = name.split("undefined: ")
+			  if (splitUndef.length>1) {name=splitUndef[1]}
+			  else {name=splitUndef[0]}
+			  
+			  if (typeof (name) === 'undefined') {
+				name = id;
+			  }
+			  if (typeof (type) === 'undefined') {
+				type = 'analysis';
+			  }
+			  this.xdsm = xdsm;
+			  this.id = id;
+			  this.uID = uID;
+			  this.name = name;
+			  this.metadata = metadata;
+			  this.isMulti = (type.search(/_multi$/) >= 0);
+			  this.type = this.isMulti ?
+				type.substr(0, type.length - MULTI_TYPE.length) : type;
+			}
+
+			Node.prototype.isMdo = function() {
+			  return this.type === "mdo";
+			};
+
+			Node.prototype.getScenarioId = function() {
+			  if (this.isMdo()) {
+				var idxscn = this.name.indexOf("_scn-");
+				if (idxscn === -1) {
+				  console.log("Warning: MDO Scenario not found. " +
+							  "Bad type or name for node: " + JSON.stringify(this));
+				  return null;
+				}
+				return this.name.substr(idxscn + 1);
+			  }
+			  return null;
+			};
+
+			function Edge(from, to, from_uID, to_uID, name, row, col, isMulti) {
+			  this.id = "link_" + from + "_" + to;
+			  this.name = name;
+			  this.row = row;
+			  this.col = col;
+			  this.iotype = row < col ? "in" : "out";
+			  this.io = {
+				fromU: (from === _U_),
+				toU: (to === _U_)
+			  };
+			  this.from = from;
+			  this.from_uID = from_uID;
+			  this.to = to;
+			  this.to_uID = to_uID;
+			  this.isMulti = isMulti;
+			}
+
+			Edge.prototype.isIO = function() {
+			  return this.io.fromU || this.io.toU;
+			};
+
+			//aigner: Function creates the xdsm graph
+			function Graph(mdo, refname) {
+			  this.nodes = [new Node(_U_, _U_, _U_, _U_, "user",[])];
+			  this.edges = [];
+			  this.chains = [];
+			  this.refname = refname || "";
+			  
+			  //aigner: New numbering due to new workflow definition in KADMOS (Old stuff commented out)
+			  var numbering = Graph.new_number(mdo.workflow);
+			  //var numbering = Graph.number(mdo.workflow);
+			  var numPrefixes = numbering.toNum;
+			  this.nodesByStep = numbering.toNode;
+
+			  mdo.nodes.forEach(function(item) {
+				name = document.createElement("TEXTAREA");
+				name = numPrefixes[item.id] + ": " + item.name;
+				this.nodes.push(new Node(item.xdsm, item.id, item.uID, name, item.type, item.metadata));    
+			  }, this);
+
+			  this.ids = this.nodes.map(function(elt) {
+				return elt.id;
+			  });
+			  
+			  mdo.edges.forEach(function(item) {
+				var idA = this.idxOf(item.from);
+				var idB = this.idxOf(item.to);
+				
+				var isMulti = this.nodes[idA].isMulti || this.nodes[idB].isMulti;
+				this.edges.push(new Edge(item.from, item.to, item.from_uID, item.to_uID, item.name, idA, idB, isMulti));
+			  }, this);
+
+			  
+			  //aigner: new chains with new workflow definition for KADMOS (Old stuff commented out)
+			  this.chains = Graph.new_expand(mdo.workflow,mdo.nodes);
+			  // var echain = Graph.expand(mdo.workflow); 
+			  // echain.forEach(function(leafChain) {
+				// if (leafChain.length < 2) {
+				  // throw new Error("Bad process chain (" + leafChain.length + "elt)");
+				// } else {
+				  // this.chains.push([]);
+				  // var ids = this.nodes.map(function(elt) {
+					// return elt.id;
+				  // });
+				  // leafChain.forEach(function(item, j) {
+					// if (j !== 0) {
+					  // var idA = ids.indexOf(leafChain[j - 1]);
+					  // if (idA < 0) {
+						// throw new Error("Process chain element (" +
+										// leafChain[j - 1] + ") not found");
+					  // }
+					  // var idB = ids.indexOf(leafChain[j]);
+					  // if (idB < 0) {
+						// throw new Error("Process chain element (" +
+										// leafChain[j] + ") not found");
+					  // }
+					  // if (idA !== idB) {
+						// this.chains[this.chains.length - 1].push([idA, idB]);
+					  // }
+					// }
+				  // }, this);
+				// }
+			  // }, this);
+			  
+			  
+			}
+
+			Graph.prototype.idxOf = function(nodeId) {
+			  return this.ids.indexOf(nodeId);
+			};
+			Graph.prototype.getNode = function(nodeId) {
+			  return this.nodes[this.ids.indexOf(nodeId)];
+			};
+
+			function _expand(workflow) {
+			  var ret = [];
+			  var prev;
+			  workflow.forEach(function(item) {
+				if (item instanceof Array) {
+				  if (item[0].hasOwnProperty('parallel')) {
+					if (prev) {
+					  ret = ret.slice(0, ret.length - 1).concat(item[0].parallel.map(
+						  function(elt) {
+							return [prev].concat(_expand([elt]), prev);
+						  }));
+					} else {
+					  throw new Error("Bad workflow structure : " +
+						  "cannot parallel loop without previous starting point.");
+					}
+				  } else if (prev) {
+					ret = ret.concat(_expand(item), prev);
+				  } else {
+					ret = ret.concat(_expand(item));
+				  }
+				  prev = ret[ret.length - 1];
+				} else if (item.hasOwnProperty('parallel')) {
+				  if (prev) {
+					ret = ret.slice(0, ret.length - 1).concat(
+						item.parallel.map(function(elt) {
+						  return [prev].concat(_expand([elt]));
+						}));
+				  } else {
+					ret = ret.concat(item.parallel.map(
+						function(elt) {
+						  return _expand([elt]);
+						}));
+				  }
+				  prev = undefined;
+				} else {
+				  var i = ret.length - 1;
+				  var flagParallel = false;
+				  while (i >= 0 && (ret[i] instanceof Array)) {
+					ret[i] = ret[i].concat(item);
+					i -= 1;
+					flagParallel = true;
+				  }
+				  if (!flagParallel) {
+					ret.push(item);
+				  }
+				  prev = item;
+				}
+			  }, this);
+			  return ret;
+			}
+
+			Graph.expand = function(item) {
+			  var expanded = _expand(item);
+			  var result = [];
+			  var current = [];
+			  expanded.forEach(function(elt) {
+				if (elt instanceof Array) {
+				  if (current.length > 0) {
+					current.push(elt[0]);
+					result.push(current);
+					current = [];
+				  }
+				  result.push(elt);
+				} else {
+				  if (result.length > 0 && current.length === 0) {
+					var lastChain = result[result.length - 1];
+					var lastElt = lastChain[lastChain.length - 1];
+					current.push(lastElt);
+				  }
+				  current.push(elt);
+				}
+			  }, this);
+			  if (current.length > 0) {
+				result.push(current);
+			  }
+			  return result;
+			};
+
+			Graph.new_expand = function(workflow,nodes) {
+				var ids = nodes.map(function(elt) {
+					return elt.id;
+				});
+				var result_tmp = [];
+				for (var i=0; i < workflow.length; i++)
+				{
+					var stepNumber = workflow[i].step_number
+					var edges = workflow[i].edges;
+					for (var j=0; j < edges.length; j++)
+					{
+						var fromNode = edges[j][0];
+						var toNode = edges[j][1];			
+						var fromId = ids.indexOf(fromNode)+1;
+						var toId = ids.indexOf(toNode)+1;
+						result_tmp.push([fromId,toId]);
+					}
+				}
+				var result = [];
+				result.push(result_tmp)
+				return result;
+			};
+
+			Graph.number = function(workflow, num) {
+			  num = (typeof num === 'undefined') ? 0 : num;
+			  var toNum = {};
+			  var toNode = [];
+
+			  function setStep(step, nodeId) {
+				if (step in toNode) {
+				  toNode[step].push(nodeId);
+				} else {
+				  toNode[step] = [nodeId];
+				}
+			  }
+
+			  function setNum(nodeId, beg, end) {
+				if (end === undefined) {
+				  num = String(beg);
+				  setStep(beg, nodeId);
+				} else {
+				  num = end + "-" + beg;
+				  setStep(end, nodeId);
+				}
+				if (nodeId in toNum) {
+				  toNum[nodeId] += "," + num;
+				} else {
+				  toNum[nodeId] = num;
+				}
+			  }
+
+			  function _number(wks, num) {
+				var ret = 0;
+				if (wks instanceof Array) {
+				  if (wks.length === 0) {
+					ret = num;
+				  } else if (wks.length === 1) {
+					ret = _number(wks[0], num);
+				  } else {
+					var head = wks[0];
+					var tail = wks.slice(1);
+					var beg = _number(head, num);
+					if (tail[0] instanceof Array) {
+					  var end = _number(tail[0], beg);
+					  setNum(head, beg, end);
+					  beg = end + 1;
+					  tail.shift();
+					}
+					ret = _number(tail, beg);
+				  }
+				} else if ((wks instanceof Object) && 'parallel' in wks) {
+				  var nums = wks.parallel.map(function(branch) {
+					return _number(branch, num);
+				  });
+				  ret = Math.max.apply(null, nums);
+				} else {
+				  setNum(wks, num);
+				  ret = num + 1;
+				}
+				return ret;
+			  }
+
+			  _number(workflow, num);
+			  // console.log('toNodes=', JSON.stringify(toNode));
+			  // console.log('toNum=',JSON.stringify(toNum));
+			  return {toNum: toNum, toNode: toNode};
+			};
+
+			//aigner: New numbering for the workflow nodes
+			Graph.new_number = function(workflow, num) {
+				num = (typeof num === 'undefined') ? 0 : num;
+				var toNum = {};
+				var toNode = [];
+				
+				for (var i=0; i < workflow.length; i++)
+				{
+					//aigner: Number the nodes with respect to the defined process steps
+					//--> toNum
+					//##########################################
+					for (var j=0; j < workflow[i].process_step_blocks.length; j++)
+					{
+						var proc_id_to = workflow[i].process_step_blocks[j];
+						if (proc_id_to)
+						{
+
+							if (!toNum[proc_id_to])
+							{
+								toNum[proc_id_to] = workflow[i].step_number;
+							}
+							else
+							{
+								toNum[proc_id_to] += "," + workflow[i].step_number;
+							}
+						}
+					}
+					for (var j=0; j < workflow[i].converger_step_blocks.length; j++)
+					{
+						var conv_id_to = workflow[i].converger_step_blocks[j];
+						if (conv_id_to)
+						{
+							toNum[conv_id_to] += "," + workflow[i].step_number;
+							var stepID = parseInt(toNum[conv_id_to].split(',')[0])+1;
+							//aigner: CAUTION hard coded exception for coordinator
+							if (conv_id_to!="Coordinator"){toNum[conv_id_to] += "-" + stepID;}
+						}
+					}
+					//##########################################		
+					//--> toNode
+					//##########################################
+					var stepNumber = workflow[i].step_number
+					var nodeId;
+					if (stepNumber==0){nodeId = [workflow[i].process_step_blocks[0]];}
+					else
+					{
+						var nodeIds = [];
+						for (var j=0; j<workflow[i].edges.length ;j++)
+						{
+							nodeIds.push(workflow[i].edges[j][1]);
+						}
+						nodeId = nodeIds;
+					}
+					toNode[stepNumber] = nodeId;
+					//##########################################
+				}	
+				return {toNum: toNum, toNode: toNode};
+			};
+
+			module.exports = Graph;
+
+			},{}],4:[function(require,module,exports){
+			function Labelizer() {}
+
+			Labelizer.strParse = function(str) {
+			  if (str === "") {
+				return [{base: '', sub: undefined, sup: undefined}];
+			  }
+
+			  //console.log("STR")
+			  //console.log(str);
+			  //aigner: Space sign added
+			  var lstr = str.split(',');
+			  var underscores = /_/g;
+			  var rg = /([0-9\-]+: )?([A-Za-z0-9\{\}\(\)\[\]\-\.]+)(_[A-Za-z0-9\-\._]+)?(\^.+)?/;
+
+			  var res = lstr.map(function(s) {
+				var base;
+				var sub;
+				var sup;
+				
+				//aigner: Modification. xpath is split after each "/"
+				var s_split = s.split("/");
+				s = s_split[s_split.length-1];
+
+				if ((s.match(underscores) || []).length > 1) {
+				  var mu = s.match(/(.+)^(.+)/);
+				  if (mu) {
+					return {base: mu[1], sub: undefined, sup: mu[2]};
+				  }
+				  return {base: s, sub: undefined, sup: undefined};
+				}
+				var m = s.match(rg);
+				if (m) {
+				  base = (m[1] ? m[1] : "") + m[2];
+				  if (m[3]) {
+					sub = m[3].substring(1);
+				  }
+				  if (m[4]) {
+					sup = m[4].substring(1);
+				  }
+				} else {
+				  throw new Error("Labelizer.strParse: Can not parse '" + s + "'");
+				}
+				return {base: base, sub: sub, sup: sup};
+			  }, this);
+			 
+			  return res;
+			};
+
+			Labelizer.labelize = function() {
+			  var ellipsis = 0;
+
+			  //aigner: createLabel modified. Hide variable names if too long.
+			  function createLabel(selection) 
+			  {
+				selection.each(function(d) {
+					//console.log("Labelize-->");
+					//console.log(d);
+				  var tokens = Labelizer.strParse(d.name);
+				  var text = selection.append("text");
+
+				  var className = selection._groups[0][0].getAttribute("class");
+
+				  if (className.includes("node"))
+				  {
+					tokens.every(function(token, i, ary)
+					{
+						var offsetSub = 0;
+						var offsetSup = 0;
+						//aigner: If the node is too big, it will not be shown at first, only when hovering
+						if (ellipsis < 1 || i < 15) 
+						{
+							text.append("tspan").text(token.base);
+							if (token.sub) 
+							{
+							offsetSub = 10;
+							text.append("tspan")
+							  .attr("class", "sub")
+							  .attr("dy", offsetSub)
+							  .text(token.sub);
+							}
+							if (token.sup) {
+								offsetSup = -10;
+								text.append("tspan")
+								  .attr("class", "sup")
+								  .attr("dx", -5)
+								  .attr("dy", -offsetSub + offsetSup)
+								  .text(token.sup);
+								offsetSub = 0;
+							}
+						} else 
+						{
+							text.append("tspan")
+								.attr("dy", -offsetSub - offsetSup)
+								.text("...");
+							selection.classed("ellipsized", true);
+							return false;
+						}
+						if (i < ary.length - 1) 
+						{
+							  text.append("tspan")
+								.attr("dy", -offsetSub - offsetSup)
+								.text(", ");
+						}
+						return true;
+					}, this);
+				  }
+				  else if(className.includes("edge"))
+				  {	  
+						var offsetSub = 0;
+						var offsetSup = 0;
+						//aigner: If there are more than 5 variables in an edge, they are not shown!
+						tokens.every(function(token, i, ary)
+						{           			
+							if(d.io.fromU || d.from =="Coordinator"){text_tmp = "inp."}
+							else if(d.io.toU || d.to=="Coordinator"){text_tmp = "outp."}
+							else{text_tmp = "conn."}
+							//if (ary.length>1){text_tmp = text_tmp+"s"};
+							text.append("tspan")
+							.attr("dy", -offsetSub - offsetSup)
+							.text(ary.length + " " + text_tmp);                    
+							
+							selection.classed("ellipsized", true);
+							return false;
+						}, this);
+				  }
+				});
+			  }
+
+			  createLabel.ellipsis = function(value) {  
+				if (!arguments.length) {
+				  return ellipsis;
+				}
+				ellipsis = value;
+				return createLabel;
+			  };
+
+			  return createLabel;
+			};
+
+			Labelizer.tooltipize = function() {
+			  var text = "";
+
+			  function createTooltip(selection) {
+				var tokens = Labelizer.strParse(text);
+				var html = [];
+				tokens.forEach(function(token) {
+				  var item = token.base;
+				  if (token.sub) {
+					item += "<sub>" + token.sub + "</sub>";
+				  }
+				  if (token.sup) {
+					item += "<sup>" + token.sup + "</sup>";
+				  }
+				  html.push(item);
+				}, this);
+				selection.html(html.join(", "));
+			  }
+
+			  createTooltip.text = function(value) {
+				if (!arguments.length) {
+				  return text;
+				}
+				text = value;
+				return createTooltip;
+			  };
+
+			  return createTooltip;
+			};
+
+			module.exports = Labelizer;
+
+			},{}],5:[function(require,module,exports){
+			var d3 = require('d3');
+			var Labelizer = require('./labelizer.js');
+
+			var WIDTH = 1000;
+			var HEIGHT = 500;
+			var X_ORIG = 70;
+			var Y_ORIG = 20;
+			var PADDING = 20;
+			var CELL_W = 250;
+			var CELL_H = 75;
+			var MULTI_OFFSET = 3;
+
+			function Cell(x, y, width, height) {
+			  this.x = x;
+			  this.y = y;
+			  this.width = width;
+			  this.height = height;
+			}
+
+			function Xdsm(graph, svgid, tooltip) {
+			  this.graph = graph;
+			  this.tooltip = tooltip;
+			  this.svg = d3.select(".xdsm")
+						   .append("svg")
+						 .attr("width", WIDTH)
+						 .attr("height", HEIGHT)
+						 .attr("class", svgid);
+
+			  this.grid = [];
+			  this.nodes = [];
+			  this.edges = [];
+			}
+
+			Xdsm.prototype.draw = function(graphName) {
+			  var self = this;
+
+			  if (self.graph.refname) {
+				var ref = self.svg.append('g').classed('title', true);
+
+				var text_tmp = self.graph.refname.replace(/\w/g, function(l){ return l.toUpperCase() })
+					
+				//ref.append("text").text(graphName);
+				var bbox = ref.nodes()[0].getBBox();
+				ref.insert("rect", "text")
+					.attr('x', bbox.x)
+					.attr('y', bbox.y)
+					.attr('width', bbox.width)
+					.attr('height', bbox.height);
+
+				ref.attr('transform',
+						 'translate(' + X_ORIG + ',' + (Y_ORIG + bbox.height-10) + ')');
+			  }
+
+			  self.nodes = self._createTextGroup("node");
+			  self.edges = self._createTextGroup("edge");
+
+			  // Workflow
+			  self._createWorkflow();
+
+			  // Layout texts
+			  self._layoutText(self.nodes);
+			  self._layoutText(self.edges);
+
+			  // Rectangles for nodes
+			  self.nodes.each(function(d, i) {
+				var that = d3.select(this);
+				that.call(self._customRect.bind(self), d, i, 0);
+				if (d.isMulti) {
+				  that.call(self._customRect.bind(self), d, i, 1 * Number(MULTI_OFFSET));
+				  that.call(self._customRect.bind(self), d, i, 2 * Number(MULTI_OFFSET));
+				}
+			  });
+
+			  // Trapezium for edges
+			  self.edges.each(function(d, i) {
+				var that = d3.select(this);
+				that.call(self._customTrapz.bind(self), d, i, 0);
+				if (d.isMulti) {
+				  that.call(self._customTrapz.bind(self), d, i, 1 * Number(MULTI_OFFSET));
+				  that.call(self._customTrapz.bind(self), d, i, 2 * Number(MULTI_OFFSET));
+				}
+			  });
+
+			  // Dataflow
+			  self._createDataflow(self.edges);
+				
+			  //aigner: set svg size
+			  var w = CELL_W * (self.graph.nodes.length + 1);
+			  var h = CELL_H * (self.graph.nodes.length + 1);
+			  self.svg.attr("width", w).attr("height", h);
+
+			  var bordercolor = 'black';
+			  self.svg.append("rect")
+						.classed("border", true)
+						.attr("x", 4)
+						.attr("y", 4)
+						.attr("height", h - 4)
+						.attr("width", w - 4)
+						.style("stroke", bordercolor)
+						.style("fill", "none")
+						.style("stroke-width", 0);
+						
+			  //aigner: PlayButton for animation
+			  var playButton = self.svg.append("g").attr("class", "playButton")
+				  .attr("transform", "translate("+ 10 +","+ 10 +")")
+				  
+			  playButton
+				.append("rect")
+				  .attr("class", "playButton_rect")
+				  .attr("width", 50)
+				  .attr("height", 50)
+				  .attr("rx", 4)
+				  .style("fill", "#555555");
+				  
+			  playButton
+				.append("path")
+				  .attr("class", "playButton_triangle")
+				  .attr("d", "M15 10 L15 40 L35 25 Z")
+				  .style("fill", "white");
+				  
+			  playButton.append("text")
+				  .attr("y",20)
+				  .attr("x",60)
+				  .text("Play Workflow")
+
+			  //aigner: Hide playbutton if there is no workflow process
+			  if(self.graph.nodesByStep.length<1)
+			  {
+				  playButton.attr("visibility","hidden")
+			  }
+			  playButton.append("svg:title").text("Click to play workflow");
+			};
+
+			Xdsm.prototype._createTextGroup = function(kind) {
+			  var self = this;
+
+			  var group = self.svg.append('g').attr("class", kind + "s");
+
+			  var textGroups =
+				group.selectAll("." + kind)
+				  .data(this.graph[kind + "s"])
+				.enter()
+				  .append("g").attr("class", function(d) {
+					var klass = kind === "node" ? d.type : "dataInter";
+					if (klass === "dataInter" && (d.isIO()||d.from=="Coordinator"||d.to=="Coordinator")) {
+					  klass = "dataIO";
+					}
+					return d.id + " " + kind + " " + klass;
+				  }).each(function() {
+					var labelize = Labelizer.labelize().ellipsis(5);
+					d3.select(this).call(labelize);
+				  });
+
+			  d3.selectAll(".ellipsized")
+				.on("mouseover", function(d) {
+					d3.select(this).style("cursor", "pointer")
+					self.tooltip.transition().duration(200).style("opacity", 0.9);
+					var pipeData = d.name.split(",");
+					var pipeVariables=[];
+					for (var i=0; i<pipeData.length; i++)
+					{
+						if (pipeData[i].includes("/"))
+						{
+							var splitPipeData = pipeData[i].split("/");
+							pipeVariables.push(splitPipeData[splitPipeData.length-1]);
+						}
+					}
+					
+
+					var pruned_pipeVars = {};
+					var tooltipText="";
+					pipeVariables.forEach(function(x) { pruned_pipeVars[x] = (pruned_pipeVars[x] || 0)+1; });
+					for(var keyName in pruned_pipeVars) {
+						var textTmp;
+						var value = pruned_pipeVars[keyName]
+						if (value>1){textTmp = String(keyName+"("+value+")")}
+						else{textTmp=String(keyName)}
+						if (tooltipText==""){tooltipText+=textTmp}
+						else{tooltipText+=","+textTmp}
+					}
+					
+					var tooltipize = Labelizer.tooltipize().text(tooltipText);
+					self.tooltip.call(tooltipize)
+					  .style("width", "200px")
+					  .style("left", (d3.event.pageX) + "px")
+					  .style("top", (d3.event.pageY - 28) + "px");
+				})
+				.on("mouseout", function() {
+					self.tooltip.transition().duration(500).style("opacity", 0);
+				});
+
+			  return textGroups;
+			};
+
+			Xdsm.prototype._createWorkflow = function() {
+			  //  console.log(JSON.stringify(this.graph.chains));
+			  var workflow = this.svg.insert("g", ":first-child")
+								.attr("class", "workflow");
+			  workflow.selectAll("g")
+				.data(this.graph.chains)
+			  .enter()
+				.insert('g').attr("class", "workflow-chain")
+				.selectAll('polyline')
+				  .data(function(d) { return d; })  // eslint-disable-line brace-style
+				.enter()
+				  .append("polyline")
+					.attr("class", function(d) {
+					  return "link_" + d[0] + "_" + d[1];
+					})
+					.attr("points", function(d) {
+					  var w = CELL_W * Math.abs(d[0] - d[1]);
+					  var h = CELL_H * Math.abs(d[0] - d[1]);
+					  var points = [];
+					  if (d[0] < d[1]) {
+						if (d[0] !== 0) {
+						  points.push((-w) + ",0");
+						}
+						points.push("0,0");
+						if (d[1] !== 0) {
+						  points.push("0," + h);
+						}
+					  } else {
+						if (d[0] !== 0) {
+						  points.push(w + ",0");
+						}
+						points.push("0,0");
+						if (d[1] !== 0) {
+						  points.push("0," + (-h));
+						}
+					  }
+					  return points.join(" ");
+					})
+				  .attr("transform", function(d) {
+					var max = Math.max(d[0], d[1]);
+					var min = Math.min(d[0], d[1]);
+					var w;
+					var h;
+					if (d[0] < d[1]) {
+					  w = CELL_W * max + X_ORIG;
+					  h = CELL_H * min + Y_ORIG;
+					} else {
+					  w = CELL_W * min + X_ORIG;
+					  h = CELL_H * max + Y_ORIG;
+					}
+					return "translate(" + (X_ORIG + w) + "," + (Y_ORIG + h) + ")";
+				  });
+			};
+
+			Xdsm.prototype._createDataflow = function(edges) {
+			  var dataflow = this.svg.insert("g", ":first-child")
+							   .attr("class", "dataflow");
+
+			  edges.each(function(d, i) {
+				dataflow.insert("polyline", ":first-child")
+				  .attr("points", function() {
+					var w = CELL_W * Math.abs(d.col - d.row);
+					var h = CELL_H * Math.abs(d.col - d.row);
+					var points = [];
+					if (d.iotype === "in") {
+					  if (!d.io.fromU) {
+						points.push((-w) + ",0");
+					  }
+					  points.push("0,0");
+					  if (!d.io.toU) {
+						points.push("0," + h);
+					  }
+					} else {
+					  if (!d.io.fromU) {
+						points.push(w + ",0");
+					  }
+					  points.push("0,0");
+					  if (!d.io.toU) {
+						points.push("0," + (-h));
+					  }
+					}
+					return points.join(" ");
+				  }).attr("transform", function() {
+					var m = (d.col === undefined) ? i : d.col;
+					var n = (d.row === undefined) ? i : d.row;
+					var w = CELL_W * m + X_ORIG;
+					var h = CELL_H * n + Y_ORIG;
+					return "translate(" + (X_ORIG + w) + "," + (Y_ORIG + h) + ")";
+				  });
+			  });
+			};
+
+			Xdsm.prototype._layoutText = function(items) {
+			  var grid = this.grid;
+			  items.each(function(d, i) {
+				var item = d3.select(this);
+				if (grid[i] === undefined) {
+				  grid[i] = new Array(items.length);
+				}
+				item.select("text").each(function(d, j) {
+				  var that = d3.select(this);
+				  var data = item.data()[0];
+				  var m = (data.row === undefined) ? i : data.row;
+				  var n = (data.col === undefined) ? i : data.col;
+				  var bbox = that.nodes()[j].getBBox();
+				  grid[m][n] = new Cell(-bbox.width / 2, 0, bbox.width, bbox.height);
+				  that.attr("x", function() {
+					return grid[m][n].x;
+				  }).attr("y", function() {
+					return grid[m][n].y;
+				  }).attr("width", function() {
+					return grid[m][n].width;
+				  }).attr("height", function() {
+					return grid[m][n].height;
+				  });
+				});
+			  });
+
+			  items.attr("transform", function(d, i) {
+				var m = (d.col === undefined) ? i : d.col;
+				var n = (d.row === undefined) ? i : d.row;
+				var w = CELL_W * m + X_ORIG;
+				var h = CELL_H * n + Y_ORIG;
+				return "translate(" + (X_ORIG + w) + "," + (Y_ORIG + h) + ")";
+			  });
+			};
+
+			Xdsm.prototype._customRect = function(node, d, i, offset) {
+			  var grid = this.grid;
+			  node.insert("rect", ":first-child").attr("x", function() {
+				return grid[i][i].x + offset - PADDING;
+			  }).attr("y", function() {
+				return -grid[i][i].height * 2 / 3 - PADDING - offset;
+			  }).attr("width", function() {
+				return grid[i][i].width + (PADDING * 2);
+			  }).attr("height", function() {
+				return grid[i][i].height + (PADDING * 2);
+			  }).attr("rx", function() {
+				var rounded = d.type === 'optimization' ||
+							  d.type === 'mda' ||
+							  d.type === 'doe' ||
+							  d.type === 'converger';
+				return rounded ? (grid[i][i].height + (PADDING * 2)) / 2 : 0;
+			  }).attr("ry", function() {
+				var rounded = d.type === 'optimization' ||
+							  d.type === 'mda' ||
+							  d.type === 'doe' ||
+							  d.type === 'converger';
+				return rounded ? (grid[i][i].height + (PADDING * 2)) / 2 : 0;
+			  });
+			};
+
+			Xdsm.prototype._customTrapz = function(edge, d, i, offset) {
+			  var grid = this.grid;
+			  edge.insert("polygon", ":first-child").attr("points", function(d) {
+				var pad = 5;
+				var w = grid[d.row][d.col].width;
+				var h = grid[d.row][d.col].height;
+				var topleft = (-pad - w / 2 + offset) + ", " +
+							  (-pad - h * 2 / 3 - offset);
+				var topright = (w / 2 + pad + offset + 5) + ", " +
+							   (-pad - h * 2 / 3 - offset);
+				var botright = (w / 2 + pad + offset - 5 + 5) + ", " +
+							   (pad + h / 3 - offset);
+				var botleft = (-pad - w / 2 + offset - 5) + ", " +
+							  (pad + h / 3 - offset);
+				var tpz = [topleft, topright, botright, botleft].join(" ");
+				return tpz;
+			  });
+			};
+
+			module.exports = Xdsm;
+
+			},{"./labelizer.js":4,"d3":1}],6:[function(require,module,exports){
+			/*
+			 * XDSMjs
+			 * Copyright 2016 Rémi Lafage
+			 */
+			"use strict";
+
+
+
+
+			var d3 = require('d3');
+			var Graph = require('./src/graph');
+			var Xdsm = require('./src/xdsm');
+			var Animation = require('./src/animation');
+
+
+			//aigner: NEW!
+			//#####################################################################//
+			//aigner: functions for drawing expand- and collapse-symbols
+			function drawExpandSymbol(aCircle, line1, line2)
+			{        
+				 aCircle = aCircle
+					.attr("r", 10)
+					.style("stroke", "black")
+					.style("stroke-width", 2)
+					.style("fill", "#99CC00")
+					.style("fill-opacity", .6)
+				line1 = line1
+					.attr("x1", parseFloat(aCircle.attr("cx"))-5)
+					.attr("y1", parseFloat(aCircle.attr("cy")))
+					.attr("x2", parseFloat(aCircle.attr("cx"))+5)
+					.attr("y2", parseFloat(aCircle.attr("cy")))
+					.style("stroke", "black")
+					.style("stroke-width", 2);
+				line2 = line2
+					.attr("x1", parseFloat(aCircle.attr("cx")))
+					.attr("y1", parseFloat(aCircle.attr("cy"))-5)
+					.attr("x2", parseFloat(aCircle.attr("cx")))
+					.attr("y2", parseFloat(aCircle.attr("cy"))+5)
+					.style("stroke", "black")
+					.style("stroke-width", 2);
+			}
+			function drawRemoveSymbol(anXdsm, aCircle, aMinus)
+			{        
+				 var xOffset=150;
+				 var yOffset=12;
+				 aCircle = aCircle
+					.attr("cx", anXdsm.svg.attr("width")-xOffset)
+					.attr("cy", yOffset)
+					.attr("r", 10)
+					.classed("remCircle",true)
+				aMinus = aMinus
+					.attr("x1", anXdsm.svg.attr("width")-xOffset+5)
+					.attr("y1", yOffset)
+					.attr("x2", anXdsm.svg.attr("width")-xOffset-5)
+					.attr("y2", yOffset)
+					.classed("remMinus",true)
+			}
+			function drawTreeRemoveSymbol(aRemoveSymbol)
+			{
+				aRemoveSymbol = aRemoveSymbol
+					.attr("class", "treeRemoveSymbol")
+					.attr("transform", "translate(38,12)")
+				var circle = aRemoveSymbol.append("circle");
+				var minus = aRemoveSymbol.append("line");
+				var cx = -20;
+				var cy = 12;
+				circle = circle
+					.attr("cx", cx+5)
+					.attr("cy", cy)
+					.attr("r", 10)
+					.classed("remCircle",true)
+				minus = minus
+					.attr("x1", cx)
+					.attr("y1", cy)
+					.attr("x2", cx+10)
+					.attr("y2", cy)
+					.classed("remMinus",true)
+				aRemoveSymbol
+					.on("mouseover", function(){
+						d3.select(this).style("cursor", "pointer")
+						circle.style("fill", "red").style("fill-opacity", .8);
+						})
+					.on("mouseout", function(){circle.style("fill", "red").style("fill-opacity", .6)})
+			}
+
+			//aigner: Update of the sub workflows
+			function update_subXdsm(xdsms, refName)
+			{
+				var playButton = d3.select(".xdsm").select("."+refName).select(".playButton");
+				var rect = playButton.select(".playButton_rect");
+				playButton.on("mouseover",function(){
+						d3.select(this).style("cursor", "pointer")
+						rect.style("fill","#3399FF");
+					})
+					.on("mousedown", function()
+					{
+						rect.style("fill","#3399FF");
+						var anim = new Animation(xdsms, refName);
+						anim.run();
+					})
+					.on("mouseup", function(){rect.style("fill","#4B4B4B");})
+					.on("mouseout", function(){rect.style("fill","#555555");})
+			}
+            
+            //aigner: Move to front function
+			d3.selection.prototype.moveToFront = function() {  
+			  return this.each(function(){
+				this.parentNode.appendChild(this);
+			  });
+			};
+			//aigner: Include function
+			function include(arr,obj) {
+					return (arr.indexOf(obj) != -1);
+			}
+			//d3-context-menu for right-click-option
+			d3.contextMenu = function (menu, openCallback) {
+
+				// create the div element that will hold the context menu
+				d3.selectAll('.d3-context-menu').data([1])
+					.enter()
+					.append('div')
+					.attr('class', 'd3-context-menu');
+
+				// close menu
+				d3.select('body').on('click.d3-context-menu', function() {
+					d3.select('.d3-context-menu').style('display', 'none');
+				});
+
+				// this gets executed when a contextmenu event occurs
+				return function(data, index) {	
+					var elm = this;
+
+					d3.selectAll('.d3-context-menu').html('');
+					var list = d3.selectAll('.d3-context-menu').append('ul');
+						list.selectAll('li').data(menu).enter()
+						.append('li')
+						.html(function(d) {
+							return d.title;
+						})
+						.on('mousedown', function(d, i) {
+							d.onMouseDown(elm, data, index);
+						})
+						.on('mouseup', function(d, i) {
+							d.onMouseUp(elm, data, index);
+							d3.select('.d3-context-menu').style('display', 'none');
+						})
+						.on('mouseenter',function(d,i){
+							d.onMouseOver(elm,data,index);
+							if(d.childrenItems.length>0 )
+								 {
+                                  var li = this
+								  d3.select(this).selectAll("ul").remove(); 
+								  d3.select(this)
+									.append("ul")
+                                    .style("top",String(li.offsetTop-5)+"px")
+									.selectAll("li")
+									   .data(d.childrenItems)
+										.enter().append("li")
+										  .text(function(d) { return d.title; })
+									 .on("mouseenter", function(d,i){
+											d.onMouseOver(elm,data,index);
+										})
+									 .on('click',  function(d, i) {
+											d.onMouseClick(elm, d, index);
+										})
+									 .on('mouseleave',function(d,i){
+										
+										});
+								 }
+							 else
+								 return false;
+						})
+						.on('mouseleave',function(d,i){
+							d3.select(this).selectAll("ul").style('display', 'none')                  
+						});
+					
+					  
+
+					// the openCallback allows an action to fire before the menu is displayed
+					// an example usage would be closing a tooltip
+					if (openCallback) openCallback(data, index);
+
+					// display context menu
+					d3.select('.d3-context-menu')
+						.style('left', (d3.event.pageX - 2) + 'px')
+						.style('top', (d3.event.pageY - 2) + 'px')
+						.style('display', 'block');
+                    
+                    //Prevent the default event, which is the left-click. 
+                    //This means, the context-menu will only appear on right mouse clicks
+					d3.event.preventDefault();
+                    
+                    //Place context-menu always on top of everything esle
+                    d3.select(".d3-context-menu").style("z-index",Number.MAX_SAFE_INTEGER);
+				};
+			};
+			
+
+			//aigner: Function creates a table
+			function tabulate(aTable,data,columns) {
+				var thead = aTable.append('thead');
+				var	tbody = aTable.append('tbody');  
+
+				// create a row for each object in the data
+				var rows = tbody.selectAll('tr')
+				  .data(data)
+				  .enter()
+				  .append('tr');
+
+				// create a cell in each row for each column
+				var cells = rows.selectAll('td')
+				  .data(function (row) {
+					return columns.map(function (column) {
+					  return {column: column, value: row[column]};
+					});
+				  })
+				  .enter()
+				  .append('td')
+					.html(function (d) { return d.value; });
+
+				return aTable;
+			}
+
+			function loader(config) {
+			  return function() {
+				var radius = Math.min(config.width, config.height) / 2;
+				var tau = 2 * Math.PI;
+
+				var arc = d3.svg.arc()
+						.innerRadius(radius*0.5)
+						.outerRadius(radius*0.9)
+						.startAngle(0);
+
+				var svg = d3.select(config.container).append("svg")
+					.attr("id", config.id)
+					.attr("width", config.width)
+					.attr("height", config.height)
+				  .append("g")
+					.attr("transform", "translate(" + config.width / 2 + "," + config.height / 2 + ")")
+
+				var background = svg.append("path")
+						.datum({endAngle: 0.33*tau})
+						.style("fill", "#4D4D4D")
+						.attr("d", arc)
+						.call(spin, 1500)
+
+				function spin(selection, duration) {
+					selection.transition()
+						.ease("linear")
+						.duration(duration)
+						.attrTween("transform", function() {
+							return d3.interpolateString("rotate(0)", "rotate(360)");
+						});
+
+					setTimeout(function() { spin(selection, duration); }, duration);
+				}
+
+				function transitionFunction(path) {
+					path.transition()
+						.duration(7500)
+						.attrTween("stroke-dasharray", tweenDash)
+						.each("end", function() { d3.select(this).call(transition); });
+				}
+
+			  };
+			}
+
+
+			var myLoader = loader({width: 960, height: 500, container: "#loader_container", id: "loader"});
+			
+			//aigner: NEW!
+			//aigner: Here, the data is read and the XDSM is created
+			//#####################################################################//
+			function startXDSM(data, graphID) 
+			{				
+				var graphs, currentGraph, varCategories, entireData;
+				
+				entireData = data;
+				graphs =  entireData.graphs;
+				for (var i=0;i<graphs.length;i++)
+				{
+					if (graphs[i].id==graphID)
+					{
+						currentGraph = graphs[i]
+					}
+				}
+				varCategories =  entireData.categories;
+				
+				//aigner: Get xdsm data
+				var mdo = currentGraph.xdsm;
+				
+				d3.select("body").append("div").attr("class","xdsmDiv")	
+				//################################################################################################//	
+				var headerDiv = d3.select(".xdsmDiv").append("div").attr("class","panel panel-primary")
+				headerDiv.append("div").attr("class","panel-heading text-center")
+					.append("h3")
+					.attr("class","panel-title")
+					.style("font-family","Arial")
+					.style("font-size","20pt")
+					.text("XDSM View")
+				var name_tmp="";
+				if (currentGraph.name){name_tmp=currentGraph.name}
+				else{name_tmp="Graph " + currentGraph.id}
+				headerDiv.append("div").attr("class","panel-body")
+					.style("font-family","Arial")
+					.style("font-size","16pt")
+					.text("Graph name: " + name_tmp)
+				headerDiv.append("div").attr("class","panel-body")
+					.style("font-family","Arial")
+					.style("font-size","16pt")
+					.text("Graph description: " + currentGraph.description)
+				//################################################################################################//	
+				
+                
+                //################################################################################################//
+                //aigner: Get node order of current graph nodes
+                var nodeOrder="";
+                for (var j=1; j<currentGraph.xdsm.nodes.length;j++)
+                {
+
+                    if (j!=1)
+                        nodeOrder += ",";
+                    nodeOrder += currentGraph.xdsm.nodes[j].uID;
+                }
+                
+                //aigner: theInputOptions -> array of all nodes in the graph, which can then be selected in the fpg manipulations
+                var theInputOptions = [];
+                for (var j=1; j<currentGraph.xdsm.nodes.length;j++)
+                {
+                    //aigner: value: j-1 because in KADMOS the coordinator is not in the node list, therefore all other competences' indices are decreased by 1!
+                    theInputOptions.push({text: currentGraph.xdsm.nodes[j].name, value: currentGraph.xdsm.nodes[j].uID});
+                }
+                
+                //aigner MDAO architecture options
+                var MDAO_architectures = ['-','unconverged-MDA','converged-MDA','MDF','IDF','unconverged-OPT','unconverged-DOE','converged-DOE']
+                var coupling_decompositions = ['-','Gauss-Seidel','Jacobi']
+                var DOE_methods = ['-','Full factorial design','Latin hypercube design','Monte Carlo Design']
+                //################################################################################################//
+                
+                
+                var revertDiv = d3.select(".xdsmDiv").append("div").attr("class","dataModelDiv").style("top","-10px")
+                //aigner: Revert previous step
+                //####################################################################################################################
+                //aigner: KADMOS function Save graph
+                //####################################################################################################################
+                //aigner: Function to download data to a file
+                function download(filename, text) {
+                    var element = document.createElement('a');
+                    element.setAttribute('href', 'data:text/plain;charset=utf-8,' + encodeURIComponent(text));
+                    element.setAttribute('download', filename);
+
+                    element.style.display = 'none';
+                    document.body.appendChild(element);
+
+                    element.click();
+
+                    document.body.removeChild(element);
+                }
+
+                //aigner: Export changes --> Download as CMDOWS file
+                function exportChangesToFile(fileType)
+                {                
+                    bootbox.hideAll();
+                    var bootboxContent = {title: "Save changes to file", message: '<p>Please be patient...</p>'};
+                    bootbox.prompt(
+                    {
+                        title: "<p>The graph will be downloaded to your computer</p>"
+                              +"<p>Please type in the path of the directory</p>",
+                        value: "",
+                        placeholder: "path...",
+                        callback: function(path)
+                        {
+                            var xhr = $.ajax({
+                                type: 'POST',
+                                data: {'path':path, 'fileName':currentGraph.name, 'fileType': fileType, 'graphID': graphID, 'currentOrder': nodeOrder, 'sessionID': sessionID},
+                                url: '/kadmosExportGraph',
+                                success: function(result)
+                                {                            
+                                    if (result.includes("ERROR:"))
+                                    {
+                                        bootboxContent.message = result
+                                        kadmosErrorMessage(bootboxContent);
+                                    }
+                                    else
+                                    {
+                                        bootboxContent.message = "Successfully downloaded the file(s) to <b>"+result+"</b>"
+                                        kadmosSuccessMessage(bootboxContent);
+                                    }
+                                },
+                                error: function(result)
+                                {
+                                    bootboxContent.message = result
+                                    kadmosErrorMessage(bootboxContent);
+                                }
+                            });
+                            kadmosHavePatience(xhr, bootboxContent)
+                        }
+                    })
+                }
+                    
+              
+                
+				var saveButton = revertDiv.append("button")
+                    .attr("class","btn btn-primary")
+                    .attr("data-toggle","tooltip")
+                    .attr("data-placement","top")
+                    .attr("title","Save graph")
+                    .style("margin-left","10px")
+                    .style("margin-bottom","10px")
+                saveButton.append("span")
+                    .attr("class","glyphicon glyphicon-floppy-disk")
+                    .attr("aria-hidden","true")
+                saveButton.on("mousedown", function()
+                {	
+                    bootbox.hideAll();
+                    
+                    bootbox.prompt(
+                    {
+                        title: "Save graph. What would you like to save the graph as?",
+                        inputType: 'select',
+                        inputOptions: [ {text:" Save as new VISTOMS graph",value:"VISTOMS"},
+                                        {text:"Save as KDMS file (download)",value:"kdms"},
+                                        {text:"Save as CMDOWS file (download)",value:"cmdows"}],
+                        value: "VISTOMS",
+                        callback: function (fileType)
+                        {   
+                            if (fileType)
+                            {
+                               
+                                if (fileType.includes("VISTOMS"))
+                                {
+                                    bootbox.prompt(
+                                    {
+                                        title: "<p>The graph will be saved as new VISTOMS graph</p>"
+                                              +"<p>Please type in the name of the new graph!</p>",
+                                        value: currentGraph.name,
+                                        callback: function(newGraphName)
+                                        {
+                                            if (newGraphName!=null)
+                                            {   
+                                                var bootboxContent = {title: "Save as new VISTOMS graph", message: '<p>Please be patient...</p>'};
+                                                var newGraphID = ""
+                                                if (data.graphs.length<100){newGraphID="0"+String(data.graphs.length+1)}
+                                                else {newGraphID=String(data.graphs.length+1)}
+                                                
+                                                var newGraphID = '01';
+                                                data.graphs.forEach(function(graph) 
+                                                {
+                                                    id_int = parseInt(graph.id)
+                                                    if (data.graphs.length < 100){newGraphID = "0" + String(id_int+1);}
+                                                    else{newGraphID = String(id_int+1);}
+                                                })
+                                                
+                                                var xhr = $.ajax(
+                                                {
+                                                    type: 'POST',
+                                                    data: {'graphID': graphID, 'newGraphID': newGraphID, 'newGraphName': newGraphName, 'currentOrder':nodeOrder, 'sessionID': sessionID},
+                                                    url: '/kadmosSaveGraphTmp',
+                                                    success: function(result)
+                                                    {
+                                                        if (result.includes("ERROR:"))
+                                                        {
+                                                            bootboxContent.message = result
+                                                            kadmosErrorMessage(bootboxContent);
+                                                        }
+                                                        else
+                                                        {
+                                                            var updatedData = jQuery.extend(true, {}, data);
+                                                            var graphData = JSON.parse(result);
+                                                            
+                                                            for (var i = 0; i < data.graphs.length; i++)
+                                                            {
+                                                                if (graphID == data.graphs[i].id)
+                                                                {
+                                                                    //Insert copied graph behind the original one
+                                                                    updatedData.graphs.splice(i+1, 0, graphData.graphs[0])
+                                                                }
+                                                            }
+                                                            
+                                                            clearView();
+                                                            makeKadmosMenu(updatedData);
+                                                            xdsm_script(updatedData,newGraphID);
+                                                            
+                                                            bootboxContent.message = "Success!"
+                                                            kadmosSuccessMessage(bootboxContent)
+                                                        }
+                                                    },
+                                                    error: function(result)
+                                                    {
+                                                        bootboxContent.message = result
+                                                        kadmosErrorMessage(bootboxContent);
+                                                    }
+                                                });
+                                                kadmosHavePatience(xhr, bootboxContent)
+                                            }
+                                        }
+                                    })
+                                }
+                                else
+                                {
+                                    exportChangesToFile(fileType)
+                                }
+                            }
+                        }
+                    })
+                })
+                //####################################################################################################################
+                
+                
+                
+                
+                var deleteButton = revertDiv.append("button")
+                    .attr("class","btn btn-danger")
+                    .attr("data-toggle","tooltip")
+                    .attr("data-placement","top")
+                    .attr("title","Delete graph")
+                    .style("margin-left","10px")
+                    .style("margin-bottom","10px")
+                deleteButton.append("span")
+                    .attr("class","glyphicon glyphicon-trash")
+                    .attr("aria-hidden","true")
+                deleteButton.on("mousedown", function()
+                {
+                    var bootboxContent = {title: "Deleting graph", message: '<p>Please be patient...</p>'};
+                    bootbox.hideAll();
+                    bootbox.confirm("Are you sure you want to permanently delete the graph? <b>This cannot be reverted!</b>", function(sure)
+                    {
+                        if (sure)
+                        {   
+                            var xhr = $.ajax(
+                            {
+                                type: 'POST',
+                                url: '/kadmosDeleteGraph',
+                                data: {'graphID':graphID, 'sessionID': sessionID},
+                                success: function(result)
+                                {
+                                    if (result.includes("ERROR:"))
+                                    {
+                                        bootboxContent.message = result
+                                        kadmosErrorMessage(bootboxContent);
+                                    }
+                                    else
+                                    {                                        
+                                        var dataArray = result;       
+                                        var data = []
+                                        if (dataArray.length == 0){data="REP__GRAPH_DATA__REP"}
+                                        else{data = {"graphs":[], "categories":""};}
+                                        for (var i = 0; i < dataArray.length; i++)
+                                        {
+                                            var data_tmp = JSON.parse(dataArray[i])
+                                            data.graphs.push(data_tmp.graphs[0]);
+                                            if (data.categories == [])
+                                            {
+                                                data.categories = data_tmp.categories;                                        
+                                            }
+                                        }
+                                        
+                                        clearView();
+                                        makeKadmosMenu(data);
+                                        mainPage();
+                                        
+                                        bootboxContent.message = "Graph was sucessfully deleted!"
+                                        kadmosSuccessMessage(bootboxContent)
+                                    }
+                                },
+                                error: function(result)
+                                {
+                                    bootboxContent.message = result
+                                    kadmosErrorMessage(bootboxContent);
+                                }
+                            });
+                            kadmosHavePatience(xhr, bootboxContent)
+                        }
+                    })
+                })
+                
+                
+                var backButton = revertDiv.append("button")
+                    .attr("class","btn btn-warning")
+                    .attr("data-toggle","tooltip")
+                    .attr("data-placement","top")
+                    .attr("title","Revert graph manipulation step")
+                    .style("margin-left","10px")
+                    .style("margin-bottom","10px")
+                backButton.append("span")
+                    .attr("class","glyphicon glyphicon-arrow-left")
+                    .attr("aria-hidden","true")
+                backButton.on("mousedown", function()
+                {
+                    var bootboxContent = {title: "Revert graph manipulation step", message: '<p>Please be patient...</p>'};
+                    
+                    bootbox.hideAll();
+                    bootbox.confirm("Are you sure you want to revert the last step?", function(sure)
+                    {
+                        if (sure)
+                        {   
+                            
+                            var xhr = $.ajax(
+                            {
+                                type: 'POST',
+                                url: '/kadmosRevertLastStep',
+                                data: {'graphID':graphID, 'sessionID': sessionID},
+                                success: function(result)
+                                {
+                                    if (result.includes("ERROR:"))
+                                    {
+                                        bootboxContent.message = result
+                                        kadmosErrorMessage(bootboxContent);
+                                    }
+                                    else
+                                    {
+                                        var updatedData = {};
+                                        updatedData = data;
+                                        var graphData = JSON.parse(result);             
+                                        for (var i = 0; i < updatedData.graphs.length; i++)
+                                        {
+                                            if (graphID == updatedData.graphs[i].id)
+                                            {
+                                                updatedData.graphs[i] = graphData.graphs[0];   
+                                            }
+                                        }
+                                        
+                                        clearView();
+                                        makeKadmosMenu(updatedData);
+                                        xdsm_script(updatedData,graphID);
+                                        
+                                        bootboxContent.message = "Success!"
+                                        kadmosSuccessMessage(bootboxContent)
+                                    }
+                                },
+                                error: function(result)
+                                {
+                                    bootboxContent.message = result
+                                    kadmosErrorMessage(bootboxContent);
+                                }
+                            });
+                            kadmosHavePatience(xhr, bootboxContent)
+                        }
+                    })
+                })
+                    
+                 var fwdButton = revertDiv.append("button")
+                    .attr("class","btn btn-warning")
+                    .attr("data-toggle","tooltip")
+                    .attr("data-placement","top")
+                    .attr("title","Restore graph manipulation step")
+                    .style("margin-left","10px")
+                    .style("margin-bottom","10px")
+                fwdButton.append("span")
+                    .attr("class","glyphicon glyphicon-arrow-right")
+                    .attr("aria-hidden","true")
+                fwdButton.on("mousedown", function()
+                {
+                    var bootboxContent = {title: "Restore graph manipulation step", message: '<p>Please be patient...</p>'};
+                    
+                    bootbox.hideAll();
+                    bootbox.confirm("Are you sure you want to restore the last step?", function(sure)
+                    {
+                        if (sure)
+                        {   
+                            var xhr = $.ajax(
+                            {
+                                type: 'POST',
+                                url: '/kadmosRevertLastStep',
+                                data: {'graphID':graphID},
+                                success: function(result)
+                                {
+                                    if (result.includes("ERROR:"))
+                                    {
+                                        bootboxContent.message = result
+                                        kadmosErrorMessage(bootboxContent);
+                                    }
+                                    else
+                                    {
+                                        var updatedData = {};
+                                        updatedData = data;
+                                        var graphData = JSON.parse(result);             
+                                        for (var i = 0; i < updatedData.graphs.length; i++)
+                                        {
+                                            if (graphID == updatedData.graphs[i].id)
+                                            {
+                                                updatedData.graphs[i] = graphData.graphs[0];   
+                                            }
+                                        }
+                                        
+                                        clearView();
+                                        makeKadmosMenu(updatedData);
+                                        xdsm_script(updatedData,graphID);
+                                        
+                                        bootboxContent.message = "Success!"
+                                        kadmosSuccessMessage(bootboxContent)
+                                    }
+                                },
+                                error: function(result)
+                                {
+                                    bootboxContent.message = result
+                                    kadmosErrorMessage(bootboxContent);
+                                }
+                            });
+                            kadmosHavePatience(xhr, bootboxContent)
+                        }
+                    })
+                })
+               
+               
+                //####################################################################################################################               
+                
+                
+
+                var inspectionsDiv = d3.select(".xdsmDiv").append("div").attr("class","dataModelDiv").style("top","-10px")
+                //aigner: Search for graph elements
+                //####################################################################################################################               
+                //CATEGORIES
+                 var categories = [
+                    {text:"all",value:"all"},
+                    {text:"variable",value:"variable"},
+                    {text:"function",value:"function"}]
+                
+                
+                var subCategories = [
+                    {text:"all",value:"all"},
+                    //VARIABLES:
+                    {text:"hole",value:"hole"},
+                    {text:"supplied input ",value:"supplied input "},
+                    {text:"supplied shared input",value:"supplied shared input"},
+                    {text:"output",value:"output"},
+                    {text:"collision",value:"collision"},
+                    {text:"coupling",value:"coupling"},
+                    {text:"pure circular coupling",value:"pure circular coupling"},
+                    {text:"shared coupling",value:"shared coupling"},
+                    {text:"shared circular coupling",value:"shared circular coupling"},
+                    {text:"collided coupling",value:"collided coupling"},
+                    {text:"collided circular coupling",value:"collided circular coupling"},
+                    {text:"collided shared coupling",value:"collided shared coupling"},
+                    {text:"collided shared circular coupling",value:"collided shared circular coupling"},
+                    {text:"all inputs",value:"all inputs"},
+                    {text:"all outputs",value:"all outputs"},
+                    {text:"all couplings",value:"all couplings"},
+                    {text:"all circular variables",value:"all circular variables"},
+                    {text:"all collisions",value:"all collisions"},
+                    {text:"all splittable variables",value:"all splittable variables"},
+                    {text:"all problematic variables",value:"all problematic variables"},
+                    //FUNCTIONS:
+                    {text:"hole",value:"hole"},
+                    {text:"inputless",value:"inputless"},
+                    {text:"outputless",value:"outputless"},
+                    {text:"complete",value:"complete"},
+                    {text:"all problematic functions",value:"all problematic functions"}]
+                    
+                var operators = [
+                    {text:"",value:""},
+                    {text:"<",value:"<"},
+                    {text:"<=",value:"<="},
+                    {text:"==",value:"=="},
+                    {text:">=",value:">="},
+                    {text:">",value:">"}]
+                
+                var inspectGraph_ul = inspectionsDiv.append("ul")
+                var inspectGraph_li = inspectGraph_ul.append("li")
+                    .on("mouseover", function(){
+                        d3.select(this)
+                            .style("cursor", "pointer")
+                    })
+				inspectGraph_li.append("a").text("Search")
+                inspectGraph_li.style("left", "0px")
+                inspectGraph_li.on("mousedown", function()
+                {
+                    bootbox.hideAll();
+                    
+                    var html = d3.select("html")
+                    var form_content = html.append("div").attr("class","form-content").attr("style","display:none")
+                    var form = form_content.append("form").attr("class","form").attr("role","form")
+                    
+                    var form_group1 = form.append("div").attr("class","form-group")
+                    form_group1.append("label").attr("for","category").text("Category")
+                    var input1 = form_group1.append("select").attr("id","category")
+                    categories.forEach(function(category)
+                        {
+                            input1.append("option").attr("type","select").attr("value",category.value).text(category.text)
+                        }
+                    )
+                    
+                    var form_group2 = form.append("div").attr("class","form-group")
+                    form_group2.append("label").attr("for","subcategory").text("Sub-category")
+                    var input2 = form_group2.append("select").attr("id","sub-category")
+                    subCategories.forEach(function(subcategory)
+                        {
+                            input2.append("option").attr("type","select").attr("value",subcategory.value).text(subcategory.text)
+                        }
+                    )
+                    
+                    
+                    var maxNumOfAttributes = 3;
+                    var form_group3 = form.append("div").attr("class","form-group")
+                    for (var i=0; i<maxNumOfAttributes; i++)
+                    {
+                        var input = form_group3.append("div").attr("class","attribute")
+                        if (i==0){input.append("label").attr("for","attribute"+String(i)).text("Attribute conditions (max. "+String(maxNumOfAttributes)+")")}
+                        input.append("input")
+                            .attr("id","attribute"+String(i))
+                            .attr("class","form-control")
+                            .attr("name","attribute")
+                            .attr("placeholder","attribute "+String(i+1))
+                        input.append("input")
+                            .attr("id","operator"+String(i))
+                            .attr("class","form-control")
+                            .attr("name","operator "+String(i+1))
+                            .attr("placeholder","operator "+String(i+1)+" (<,<=,==,>=,>)")
+                        input.append("input")
+                            .attr("id","value"+String(i))
+                            .attr("class","form-control")
+                            .attr("name","value")
+                            .attr("placeholder","value "+String(i+1))
+                    }
+                    
+                    var form_group4 = form.append("div").attr("class","form-group")
+                    for (var i=0; i<maxNumOfAttributes; i++)
+                    {
+                        var input = form_group4.append("div").attr("class","attribute")
+                        if (i==0){input.append("label").attr("for","attribute"+String(i)).text("Included attributes (max. "+String(maxNumOfAttributes)+")")}
+                        input.append("input")
+                            .attr("id","attr_include"+String(i))
+                            .attr("class","form-control")
+                            .attr("name","attr_include")
+                            .attr("placeholder","attribute "+String(i+1))
+                        input.append("input")
+                            .attr("id","attr_include_val"+String(i))
+                            .attr("class","form-control")
+                            .attr("name","attr_include_val "+String(i+1))
+                            .attr("placeholder","value "+String(i+1))
+                    }
+                    
+                    var form_group5 = form.append("div").attr("class","form-group")
+                    for (var i=0; i<maxNumOfAttributes; i++)
+                    {
+                        var input = form_group5.append("div").attr("class","attribute")
+                        if (i==0){input.append("label").attr("for","attribute"+String(i)).text("Excluded attributes (max. "+String(maxNumOfAttributes)+")")}
+                        input.append("input")
+                            .attr("id","attr_exclude"+String(i))
+                            .attr("class","form-control")
+                            .attr("name","attr_exclude")
+                            .attr("placeholder","attribute "+String(i+1))
+                        input.append("input")
+                            .attr("id","attr_exclude_val"+String(i))
+                            .attr("class","form-control")
+                            .attr("name","attr_exclude_val")
+                            .attr("placeholder","value "+String(i+1))
+                    }
+                        
+                    var form_group8 = form.append("div").attr("class","form-group")
+                    form_group8.append("label").attr("for","xPath_include").text("Included xPaths")
+                    var input8 = form_group8.append("input")
+                        .attr("id","xPath_include")
+                        .attr("class","form-control")
+                        .attr("name","xPath_include")
+                        .attr("placeholder","/schema/parent/child1, /schema/parent/child2, ...")
+                        
+                    var form_group9 = form.append("div").attr("class","form-group")
+                    form_group9.append("label").attr("for","xPath_exclude").text("Excluded xPaths")
+                    var input9 = form_group9.append("input")
+                        .attr("id","xPath_exclude")
+                        .attr("class","form-control")
+                        .attr("name","xPath_exclude")
+                        .attr("placeholder","/schema/parent/child1, /schema/parent/child2, ...")
+                        
+                        
+                    
+                    
+                    var modal = bootbox.dialog({
+                        message: $(".form-content").html(),
+                        title: "Search for graph elements.",
+                        size: "large",
+                        buttons: [
+                          {
+                            label: "Cancel",
+                            className: "btn btn-default pull-left",
+                            callback: function() {
+                              modal.modal("hide");
+                              d3.selectAll(".form-content").remove();
+                            }
+                          },
+                          {
+                            label: "OK",
+                            className: "btn btn-primary pull-left",
+                            callback: function() {
+                                
+                                var category = $('form #category').val()
+                                var sub_category = $('form #sub-category').val()
+                                var attr_cond = []
+                                var attr_include = [] 
+                                var attr_exclude = []
+                                for (var i=0; i<maxNumOfAttributes; i++)
+                                {   
+                                    if ($('form #attribute'+String(i)).val()!=""&&$('form #operator'+String(i)).val()!=""&&$('form #value'+String(i)).val()!="")
+                                    {attr_cond.push([$('form #attribute'+String(i)).val(),$('form #operator'+String(i)).val(),$('form #value'+String(i)).val()])}
+                                    if ($('form #attr_include'+String(i)).val()!=""&&$('form #attr_include_val'+String(i)).val()!="")
+                                    {attr_include.push([$('form #attr_include'+String(i)).val(),$('form #attr_include_val'+String(i)).val()])}
+                                    if ($('form #attr_exclude'+String(i)).val()!=""&&$('form #attr_exclude_val'+String(i)).val()!="")
+                                    {attr_exclude.push([$('form #attr_exclude'+String(i)).val(),$('form #attr_exclude_val'+String(i)).val()])}
+                                }
+                                var xPath_include = $('form #xPath_include').val()
+                                var xPath_exclude = $('form #xPath_exclude').val()
+                                
+                                var bootboxContent = {title: "Get graph elements", message: '<p>Please be patient...</p>'};
+                                var xhr = $.ajax(
+                                {
+                                    type: 'POST',
+                                    url: '/kadmosFindAllNodes',
+                                    data: {'graphID':graphID,
+                                           'sessionID': sessionID,
+                                           'category':category,
+                                           'sub_category':sub_category,
+                                           'attr_cond':JSON.stringify(attr_cond),
+                                           'attr_include':JSON.stringify(attr_include),
+                                           'attr_exclude':JSON.stringify(attr_exclude),
+                                           'xPath_include':xPath_include,
+                                           'xPath_exclude':xPath_exclude,},
+                                    success: function(result)
+                                    {
+                                        if (result.includes("ERROR:"))
+                                        {
+                                            bootboxContent.message = result
+                                            kadmosErrorMessage(bootboxContent);
+                                        }
+                                        else if (result == "[]")
+                                        {   
+                                            bootboxContent.title = "<b>Get graph elements</b>"
+                                            bootboxContent.message = "<b>No matching graph elements!</b>"
+                                            kadmosSuccessMessage(bootboxContent);
+                                        }
+                                        else
+                                        {   
+                                            bootbox.hideAll();
+                                            var schema = currentGraph.variableSchemes[varCategories[0].description];
+                                            var treeData = (JSON.parse(JSON.stringify(schema)));				
+                                            
+                                            var graphElements = JSON.parse(result)
+                                            var message = "";
+                                            
+                                            if (result.includes("/"+treeData.name))
+                                            {
+                                                bootbox.prompt(
+                                                {
+                                                    title: "The graph elements you requested contain variables. How do you want them displayed?",
+                                                    inputType: 'checkbox',
+                                                    inputOptions: [{text:" Show variables as tree view",value:"Tree View"},{text:" Show variables as list",value:"List"}],
+                                                    callback: function (result)
+                                                    {
+                                                        if (result)
+                                                        {
+                                                            var message1 = "", message2 = "";
+                                                        
+                                                            var array = ""
+                                                            var list = [];
+                                                            graphElements.forEach(function(graphElement)
+                                                            {
+                                                                if (graphElement.includes("/"+treeData.name))
+                                                                {
+                                                                    if (result.includes("Tree View"))
+                                                                    {
+                                                                        if (array == ""){array += graphElement}
+                                                                        else{array += "," + graphElement}
+                                                                    }
+                                                                    if (result.includes("List"))
+                                                                    {
+                                                                        list.push({name:graphElement,type:"variable"});
+                                                                    }
+                                                                }
+                                                                else
+                                                                {
+                                                                    list.push({name:graphElement,type:"function"});
+                                                                }
+                                                            })
+                                                            
+                                                            if(array!="")
+                                                            {
+                                                                var headLine = "Tree Layout for category:\" " + category + "\", subcategory:\" " + sub_category + "\"";  
+                                                                var d3_body = d3.select("body");
+                                                                var lobiID = String(getRandomInt(0,1000))
+                                                                var divClassName = "treeDiv" + lobiID;
+                                                                var treeLayoutdiv = d3_body.append("div").attr("class",divClassName+ " panel-default")
+                                                                                                .style("left","200px")
+                                                                                                .style("top","200px")
+                                                                                                .style("position", "absolute")
+                                                                treeLayoutdiv.append("div").attr("class","panel-heading")
+                                                                    .append("div").attr("class","panel_title").append("h4").text(headLine)
+                                                                $('.' + divClassName).lobiPanel({
+                                                                    reload: false,
+                                                                    editTitle: false,
+                                                                    unpin: false,
+                                                                    minWidth: 200,
+                                                                    maxWidth: 100000,
+                                                                    minHeight: 200,
+                                                                    maxHeight: 100000,
+                                                                });
+                                                                $('.'+divClassName).lobiPanel('unpin');
+                                                                var treeLayoutSVG = treeLayoutdiv.append("svg").attr("class","treeLayoutSVG")
+                                                                var treeLayout = treeLayoutSVG.append("g").attr("class","treeLayout");
+                                                                maketreeLayout(array, treeLayout, treeLayoutSVG, treeLayoutdiv, divClassName, headLine, varCategories[0].description);
+                                                            }
+                                                            
+                                                            show_bootBox_listMessage(list);
+                                                        }
+                                                    }
+                                                })
+                                            }
+                                            else
+                                            {
+                                                var list = [];
+                                                graphElements.forEach(function(graphElement)
+                                                {
+                                                   list.push({name:graphElement,type:"function"})
+                                                })
+                                                show_bootBox_listMessage(list)
+                                            }
+                                            
+                                            function show_bootBox_listMessage(aList)
+                                            {
+                                                if (aList.length != 0)
+                                                {
+                                                    bootboxContent.title = "Here is a list of graph elements."
+                                                    +" category: \"" + category + "\""
+                                                    +", sub-category: \"" + sub_category + "\""
+                                                    bootboxContent.message = message                                                                                                                            
+                                                    var d3_body = d3.select("body");
+                                                    
+                                                    var panel_div = d3_body.append("div").attr("class", "myPanel panel-default")
+                                                    panel_div.append("div").attr("class","panel-heading")
+                                                        .append("div").attr("class","panel_title").append("h4").text(bootboxContent.title)
+                                                    panel_div.append("input")
+                                                        .attr("id","myInput")
+                                                        .attr("placeholder","Filter search...")
+                                                        .attr("title","Type in a name")
+                                                        .attr("onkeyup","filterSearch()")
+                                                    var listGroup = panel_div.append("div").attr("class","panel-body")
+                                                        .append("table").attr("id","myTable")
+                                                        .append("tbody")
+                                                        
+                                                    aList.forEach(function(listElement)
+                                                    {
+                                                        var td = listGroup.append("tr").append("td")
+                                                            .text(listElement.name)
+                                                            .on("mouseover",function(){
+                                                                d3.select(this).style("cursor", "pointer")
+                                                            })
+                                                        if (listElement.type=="variable")
+                                                        {
+                                                            td.on("mousedown",function(){bootbox.alert("I'm a variable!")})
+                                                        }
+                                                        else if (listElement.type=="function")
+                                                        {
+                                                            td.on("mousedown",function(){bootbox.alert("I'm a function!")})
+                                                        }
+                                                    })
+                                                    $('.myPanel').lobiPanel({
+                                                        reload: false,
+                                                        editTitle: false,
+                                                        expand: false,
+                                                        unpin: false,
+                                                        resize: "none",
+                                                        minWidth: 200,
+                                                        minHeight: 200,
+                                                        maxWidth: 1100,
+                                                        maxHeight: 1200,
+                                                    });
+                                                    $('.myPanel').lobiPanel('unpin');
+                                                    $('.myPanel').lobiPanel('height','5000');
+                                                }
+                                            }
+                                        }
+                                    },
+                                    error: function(result)
+                                    {
+                                        bootboxContent.message = result
+                                        kadmosErrorMessage(bootboxContent);
+                                    }
+                                });
+                                kadmosHavePatience(xhr, bootboxContent)
+                                modal.modal("hide");
+                                d3.selectAll(".form-content").remove();
+                            }
+                          }
+                        ],
+                        onEscape: function() {
+                          modal.modal("hide");
+                          d3.selectAll(".form-content").remove();
+                        }
+                    });
+                    
+                    
+               
+                })
+                //####################################################################################################################
+                
+                
+                
+                //aigner: Kadmos functions --> Check graph
+                //####################################################################################################################				
+                var checkGraph_ul = inspectionsDiv.append("ul")
+				var checkGraph_li = checkGraph_ul.append("li")
+                    .on("mouseover", function(){
+                        d3.select(this)
+                            .style("cursor", "default")
+                    })
+                checkGraph_li.append("a").text("Check")
+                var checkGraph = checkGraph_li.append("ul");
+                var xOffset_ul = checkGraph_li._groups[0][0].offsetLeft+checkGraph_li._groups[0][0].offsetWidth-40;
+                checkGraph.style("left", String(xOffset_ul)+"px")
+                
+                //aigner: Kadmos function --> graph checks
+                checkGraph.append("li").append("a")
+                    .text("L1 check: graph")
+                    .on("mouseover", function(){d3.select(this).style("cursor", "pointer")})
+                    .on("mousedown", function()
+                    {
+                        var bootboxContent = {title: "L1 check: graph", message: '<p>Please be patient...</p>'};
+                        var xhr = $.ajax({
+                            type: 'POST',
+                            data: {'graphID': graphID, 'sessionID': sessionID},
+                            url: '/kadmosL1Check',
+                            success: function(result)
+                            {
+                                if (result.includes("ERROR:"))
+                                {
+                                    bootboxContent.message = result
+                                    kadmosErrorMessage(bootboxContent);
+                                }
+                                else
+                                {
+                                    bootboxContent.message = result
+                                    kadmosSuccessMessage(bootboxContent);
+                                }
+                            },
+                            error: function(result)
+                            {
+                                bootboxContent.message = result
+                                kadmosErrorMessage(bootboxContent);
+                            }
+                        });
+                        kadmosHavePatience(xhr, bootboxContent)
+                    })
+                    
+                checkGraph.append("li").append("a")
+                    .text("L2 check: problem formulation")
+                    .on("mouseover", function(){d3.select(this).style("cursor", "pointer")})
+                    .on("mousedown", function()
+                    {
+                        var bootboxContent = {title: "L2 check: problem formulation", message: '<p>Please be patient...</p>'};
+                        var xhr = $.ajax({
+                            type: 'POST',
+                            data: {'graphID': graphID, 'sessionID': sessionID},
+                            url: '/kadmosL2Check',
+                            success: function(result)
+                            {
+                                if (result.includes("ERROR:"))
+                                {
+                                    bootboxContent.message = result
+                                    kadmosErrorMessage(bootboxContent);
+                                }
+                                else
+                                {
+                                    bootboxContent.message = result
+                                    kadmosSuccessMessage(bootboxContent);
+                                }
+                            },
+                            error: function(result)
+                            {
+                                bootboxContent.message = result
+                                kadmosErrorMessage(bootboxContent);
+                            }
+                        });
+                        kadmosHavePatience(xhr, bootboxContent)
+                    })
+                    
+                checkGraph.append("li").append("a")
+                    .text("L3 check: graph & problem formulation")
+                    .on("mouseover", function(){d3.select(this).style("cursor", "pointer")})
+                    .on("mousedown", function()
+                    {
+                        var bootboxContent = {title: "L3 check: graph & problem formulation", message: '<p>Please be patient...</p>'};
+                        var xhr = $.ajax({
+                            type: 'POST',
+                            data: {'graphID': graphID, 'sessionID': sessionID},
+                            url: '/kadmosL3Check',
+                            success: function(result)
+                            {
+                                if (result.includes("ERROR:"))
+                                {
+                                    bootboxContent.message = result
+                                    kadmosErrorMessage(bootboxContent);
+                                }
+                                else
+                                {
+                                    bootboxContent.message = result
+                                    kadmosSuccessMessage(bootboxContent);
+                                }
+                            },
+                            error: function(result)
+                            {
+                                bootboxContent.message = result
+                                kadmosErrorMessage(bootboxContent);
+                            }
+                        });
+                        kadmosHavePatience(xhr, bootboxContent)
+                    })
+                
+                //####################################################################################################################
+
+                
+                //aigner: Kadmos functions --> Graph manipulation
+                //####################################################################################################################				
+                var optionsDiv = d3.select(".xdsmDiv").append("div").attr("class","dataModelDiv").style("top","-10px")
+                var fpgManipulations_ul = optionsDiv.append("ul")
+				var fpgManipulations_li = fpgManipulations_ul.append("li")
+                    .on("mouseover", function(){
+                        d3.select(this)
+                            .style("cursor", "default")
+                    })
+                fpgManipulations_li.append("a").text("1. FPG Manipulations")
+                var fpgManipulations = fpgManipulations_li.append("ul");
+                var xOffset_ul = fpgManipulations_li._groups[0][0].offsetLeft+fpgManipulations_li._groups[0][0].offsetWidth-40;
+                fpgManipulations.style("left", String(xOffset_ul)+"px")
+                
+                //aigner: Kadmos function --> Start defining MDO problem
+                fpgManipulations.append("li").append("a")
+                    .text("1.1. Start defining MDO problem")
+                    .on("mouseover", function(){d3.select(this).style("cursor", "pointer")})
+                    .on("mousedown", function()
+                    {
+                        bootbox.hideAll();
+                        bootbox.prompt(
+                        {
+                            title: "<p>This will create an initial FPG for your MDO problem. After clicking this button, you can go through the \"<b>FPG manipulation</b>\" steps."
+                                  +"<p>Please type in a new name for the graph</p>",
+                            value: currentGraph.name,
+                            callback: function(newGraphName)
+                            {
+                                if (newGraphName)
+                                {
+                                    var newGraphID = '01';
+                                    data.graphs.forEach(function(graph) 
+                                    {
+                                        id_int = parseInt(graph.id)
+                                        if (data.graphs.length < 100){newGraphID = "0" + String(id_int+1);}
+                                        else{newGraphID = String(id_int+1);}
+                                    })
+                                    var bootboxContent = {title: "Start defining MDO problem", message: '<p>Please be patient...</p>'};
+                                    var xhr = $.ajax({
+                                        type: 'POST',
+                                        url: '/kadmosStartDefiningMDOProblem',
+                                        data: {'graphID':graphID, 'currentOrder': nodeOrder, 'newGraphName':newGraphName, 'newGraphID':newGraphID, 'sessionID': sessionID},
+                                        success: function(result)
+                                        {
+                                            if (result.includes("ERROR:"))
+                                            {
+                                                bootboxContent.message = result
+                                                kadmosErrorMessage(bootboxContent);
+                                            }
+                                            else
+                                            {
+                                                var updatedData = jQuery.extend(true, {}, data);
+                                                var graphData = JSON.parse(result);
+                                                
+                                                for (var i = 0; i < data.graphs.length; i++)
+                                                {
+                                                    if (graphID == data.graphs[i].id)
+                                                    {
+                                                        
+                                                        //Insert copied graph behind the original one
+                                                        updatedData.graphs.splice(i+1, 0, graphData.graphs[0])
+                                                    }
+                                                }
+                                                
+                                                clearView();
+                                                makeKadmosMenu(updatedData);
+                                                xdsm_script(updatedData,newGraphID);
+                                                
+                                                bootboxContent.message = "Success!"
+                                                kadmosSuccessMessage(bootboxContent)
+                                            }
+                                        },
+                                        error: function(result)
+                                        {
+                                            bootboxContent.message = result
+                                            kadmosErrorMessage(bootboxContent);
+                                        }
+                                    });
+                                    kadmosHavePatience(xhr, bootboxContent)
+                                }
+                            }
+                        })
+                    })
+                
+                
+                
+                fpgManipulations.append("li").append("a")
+                    .text("1.2. Exclude Design Competences")
+                    .on("mouseover", function(){d3.select(this).style("cursor", "pointer")})
+                    .on("mousedown", function()
+                    {                        
+                        bootbox.hideAll();
+                        bootbox.prompt(
+                        {
+                            title: "Please select the design competences you would like to exclude.",
+                            inputType: 'checkbox',
+                            inputOptions: theInputOptions,
+                            callback: function (nodeList) 
+                            {
+                                if (nodeList)
+                                {
+                                    var nodeStr = '';
+                                    for (var i=0; i< nodeList.length; i++)
+                                    {
+                                        if (i==0){nodeStr += nodeList[i]}
+                                        else{nodeStr += ',' + nodeList[i]}
+                                    }
+                                    
+                                    bootbox.hideAll();
+                                    bootbox.confirm("Are you sure you want to do this?", function(sure)
+                                    {
+                                        if (sure)
+                                        {                                
+                                            var bootboxContent = {title: "Exclude design competences", message: '<p>Please be patient...</p>'};
+                                            var xhr = $.ajax({
+                                                type: 'POST',
+                                                url: '/kadmosExcludeDesignCompetences',
+                                                data: {'graphID':graphID, 'nodeList':nodeStr, 'currentOrder':nodeOrder, 'sessionID': sessionID},
+                                                success: function(result)
+                                                {
+                                                    if (result.includes("ERROR:"))
+                                                    {
+                                                        bootboxContent.message = result
+                                                        kadmosErrorMessage(bootboxContent);
+                                                    }
+                                                    else
+                                                    {
+                                                        var updatedData = {};
+                                                        updatedData = data;
+                                                        var graphData = JSON.parse(result);             
+                                                        for (var i = 0; i < updatedData.graphs.length; i++)
+                                                        {
+                                                            if (graphID == updatedData.graphs[i].id)
+                                                            {
+                                                                updatedData.graphs[i] = graphData.graphs[0];   
+                                                            }
+                                                        }
+                                                        
+                                                        clearView();
+                                                        makeKadmosMenu(updatedData);
+                                                        xdsm_script(updatedData,graphID);
+                                                        
+                                                        bootboxContent.message = "Success!"
+                                                        kadmosSuccessMessage(bootboxContent)
+                                                    }
+                                                },
+                                                error: function(result)
+                                                {
+                                                    bootboxContent.message = result
+                                                    kadmosErrorMessage(bootboxContent);
+                                                }
+                                            });
+                                            kadmosHavePatience(xhr, bootboxContent)
+                                        }
+                                    })
+                                }
+                            }
+                        });
+                    })
+                    
+                fpgManipulations.append("li").append("a")
+                    .text("1.3. Merge sequential competences")
+                    .on("mouseover", function(){d3.select(this).style("cursor", "pointer")})
+                    .on("mousedown", function()
+                    {                        
+                        bootbox.hideAll();
+                        bootbox.prompt(
+                        {
+                            title: "Please select the sequential design competences you would like to merge.",
+                            inputType: 'checkbox',
+                            inputOptions: theInputOptions,
+                            callback: function (nodeList) 
+                            {
+                                if (nodeList)
+                                {
+                                    var nodeStr = '';
+                                    for (var i=0; i< nodeList.length; i++)
+                                    {
+                                        if (i==0){nodeStr += nodeList[i]}
+                                        else{nodeStr += ',' + nodeList[i]}
+                                    }
+                                    
+                                    bootbox.hideAll();
+                                    bootbox.confirm("Are you sure you want to do this", function(sure)
+                                    {
+                                        if (sure)
+                                        {                       
+                                            var bootboxContent = {title: "Merge sequential design competences", message: '<p>Please be patient...</p>'};
+                                            var xhr = $.ajax({
+                                                type: 'POST',
+                                                url: '/kadmosMergeSeqDesignCompetences',
+                                                data: {'graphID':graphID, 'nodeList':nodeStr, 'currentOrder':nodeOrder, 'sessionID': sessionID},
+                                                success: function(result)
+                                                {
+                                                    if (result.includes("ERROR:"))
+                                                    {
+                                                        bootboxContent.message = result
+                                                        kadmosErrorMessage(bootboxContent);
+                                                    }
+                                                    else
+                                                    {
+                                                        var updatedData = {};
+                                                        updatedData = data;
+                                                        var graphData = JSON.parse(result);             
+                                                        for (var i = 0; i < updatedData.graphs.length; i++)
+                                                        {
+                                                            if (graphID == updatedData.graphs[i].id)
+                                                            {
+                                                                updatedData.graphs[i] = graphData.graphs[0];   
+                                                            }
+                                                        }
+                                                        
+                                                        clearView();
+                                                        makeKadmosMenu(updatedData);
+                                                        xdsm_script(updatedData,graphID);
+                                                        
+                                                        bootboxContent.message = "Success!"
+                                                        kadmosSuccessMessage(bootboxContent)
+                                                    }
+                                                },
+                                                error: function(result)
+                                                {
+                                                    bootboxContent.message = result
+                                                    kadmosErrorMessage(bootboxContent);
+                                                }
+                                            });
+                                            kadmosHavePatience(xhr, bootboxContent)
+                                        }
+                                    })
+                                
+                                }
+                            }
+                        });
+                    })
+                
+                fpgManipulations.append("li").append("a")
+                    .text("1.4. Merge parallel competences")
+                    .on("mouseover", function(){d3.select(this).style("cursor", "pointer")})
+                    .on("mousedown", function()
+                    {
+                        bootbox.hideAll();
+                        bootbox.prompt(
+                        {
+                            title: "Please select the parallel design competences you would like to merge.",
+                            inputType: 'checkbox',
+                            inputOptions: theInputOptions,
+                            callback: function (nodeList) 
+                            {
+                                if (nodeList)
+                                {
+                                    var nodeStr = '';
+                                    for (var i=0; i< nodeList.length; i++)
+                                    {
+                                        if (i==0){nodeStr += nodeList[i]}
+                                        else{nodeStr += ',' + nodeList[i]}
+                                    }
+                                    
+                                    bootbox.hideAll();
+                                    bootbox.confirm("Are you sure you want to do this", function(sure)
+                                    {
+                                        if (sure)
+                                        {                       
+                                            var bootboxContent = {title: "Merge parallel design competences", message: '<p>Please be patient...</p>'};
+                                            var xhr = $.ajax({
+                                                type: 'POST',
+                                                url: '/kadmosMergeParDesignCompetences',
+                                                data: {'graphID':graphID, 'nodeList':nodeStr, 'currentOrder':nodeOrder, 'sessionID': sessionID},
+                                                success: function(result)
+                                                {
+                                                    if (result.includes("ERROR:"))
+                                                    {
+                                                        bootboxContent.message = result
+                                                        kadmosErrorMessage(bootboxContent);
+                                                    }
+                                                    else
+                                                    {
+                                                        var updatedData = {};
+                                                        updatedData = data;
+                                                        var graphData = JSON.parse(result);             
+                                                        for (var i = 0; i < updatedData.graphs.length; i++)
+                                                        {
+                                                            if (graphID == updatedData.graphs[i].id)
+                                                            {
+                                                                updatedData.graphs[i] = graphData.graphs[0];   
+                                                            }
+                                                        }
+                                                        
+                                                        clearView();
+                                                        makeKadmosMenu(updatedData);
+                                                        xdsm_script(updatedData,graphID);
+                                                        
+                                                        bootboxContent.message = "Success!"
+                                                        kadmosSuccessMessage(bootboxContent)
+                                                    }
+                                                },
+                                                error: function(result)
+                                                {
+                                                    bootboxContent.message = result
+                                                    kadmosErrorMessage(bootboxContent);
+                                                }
+                                            });
+                                            kadmosHavePatience(xhr, bootboxContent)
+                                        }
+                                    })
+                                
+                                }
+                            }
+                        });
+                    })
+                    
+                fpgManipulations.append("li").append("a")
+                    .text("1.5. Merge function modes competences")
+                    .on("mouseover", function(){d3.select(this).style("cursor", "pointer")})
+                    .on("mousedown", function()
+                    {
+                        bootbox.hideAll();
+                        bootbox.prompt(
+                        {
+                            title: "Please select the design competences you would like to merge.",
+                            inputType: 'checkbox',
+                            inputOptions: theInputOptions,
+                            callback: function (nodeList) 
+                            {
+                                if (nodeList)
+                                {
+                                    var nodeStr = '';
+                                    for (var i=0; i< nodeList.length; i++)
+                                    {
+                                        if (i==0){nodeStr += nodeList[i]}
+                                        else{nodeStr += ',' + nodeList[i]}
+                                    }
+                                    
+                                    bootbox.hideAll();
+                                    bootbox.confirm("Are you sure you want to do this", function(sure)
+                                    {
+                                        if (sure)
+                                        {                       
+                                            var bootboxContent = {title: "Merge function mode design competences", message: '<p>Please be patient...</p>'};
+                                            var xhr = $.ajax({
+                                                type: 'POST',
+                                                url: '/kadmosMergeFuncModDesignCompetences',
+                                                data: {'graphID':graphID, 'nodeList':nodeStr, 'currentOrder':nodeOrder, 'sessionID': sessionID},
+                                                success: function(result)
+                                                {
+                                                    if (result.includes("ERROR:"))
+                                                    {
+                                                        bootboxContent.message = result
+                                                        kadmosErrorMessage(bootboxContent);
+                                                    }
+                                                    else
+                                                    {
+                                                        var updatedData = {};
+                                                        updatedData = data;
+                                                        var graphData = JSON.parse(result);             
+                                                        for (var i = 0; i < updatedData.graphs.length; i++)
+                                                        {
+                                                            if (graphID == updatedData.graphs[i].id)
+                                                            {
+                                                                updatedData.graphs[i] = graphData.graphs[0];   
+                                                            }
+                                                        }
+                                                        
+                                                        clearView();
+                                                        makeKadmosMenu(updatedData);
+                                                        xdsm_script(updatedData,graphID);
+                                                        
+                                                        bootboxContent.message = "Success!"
+                                                        kadmosSuccessMessage(bootboxContent)
+                                                    }
+                                                },
+                                                error: function(result)
+                                                {
+                                                    bootboxContent.message = result
+                                                    kadmosErrorMessage(bootboxContent);
+                                                }
+                                            });
+                                            kadmosHavePatience(xhr, bootboxContent)
+                                        }
+                                    })
+                                
+                                }
+                            }
+                        });
+                    })
+                    
+                fpgManipulations.append("li").append("a")
+                    .text("1.6. Remove collision parameters")
+                    .on("mouseover", function(){d3.select(this).style("cursor", "pointer")})
+                    .on("mousedown", function()
+                    {
+                        bootbox.hideAll();
+                        bootbox.prompt(
+                        {
+                            title: "Please select the design competences for which you would like to remove collisions.",
+                            inputType: 'checkbox',
+                            inputOptions: theInputOptions,
+                            callback: function (nodeList) 
+                            {
+                                if (nodeList)
+                                {
+                                    var nodeStr = '';
+                                    for (var i=0; i< nodeList.length; i++)
+                                    {
+                                        if (i==0){nodeStr += nodeList[i]}
+                                        else{nodeStr += ',' + nodeList[i]}
+                                    }
+                                    
+                                    bootbox.hideAll();
+                                    bootbox.confirm("Are you sure you want to do this", function(sure)
+                                    {
+                                        if (sure)
+                                        {                       
+                                            var bootboxContent = {title: "Remove collisions", message: '<p>Please be patient...</p>'};
+                                            var xhr = $.ajax({
+                                                type: 'POST',
+                                                url: '/kadmosRemoveCollision',
+                                                data: {'graphID':graphID, 'nodeList':nodeStr, 'currentOrder':nodeOrder, 'sessionID': sessionID},
+                                                success: function(result)
+                                                {
+                                                    if (result.includes("ERROR:"))
+                                                    {
+                                                        bootboxContent.message = result
+                                                        kadmosErrorMessage(bootboxContent);
+                                                    }
+                                                    else
+                                                    {
+                                                        var updatedData = {};
+                                                        updatedData = data;
+                                                        var graphData = JSON.parse(result);             
+                                                        for (var i = 0; i < updatedData.graphs.length; i++)
+                                                        {
+                                                            if (graphID == updatedData.graphs[i].id)
+                                                            {
+                                                                updatedData.graphs[i] = graphData.graphs[0];   
+                                                            }
+                                                        }
+                                                        
+                                                        clearView();
+                                                        makeKadmosMenu(updatedData);
+                                                        xdsm_script(updatedData,graphID);
+                                                        
+                                                        bootboxContent.message = "Success!"
+                                                        kadmosSuccessMessage(bootboxContent)
+                                                    }
+                                                },
+                                                error: function(result)
+                                                {
+                                                    bootboxContent.message = result
+                                                    kadmosErrorMessage(bootboxContent);
+                                                }
+                                            });
+                                            kadmosHavePatience(xhr, bootboxContent)
+                                        }
+                                    })
+                                
+                                }
+                            }
+                        });
+                    })
+                    
+                fpgManipulations.append("li").append("a")
+                    .text("1.7. Make all variables valid")
+                    .on("mouseover", function(){d3.select(this).style("cursor", "pointer")})
+                    .on("mousedown", function()
+                    {
+                        bootbox.hideAll();
+                        bootbox.confirm("<p>This will automatically remove all collisions from the graph by creating multiple variable instances.</p>" 
+										+"<p>Are you sure you want to do this?</p>", function(sure)
+                        {
+                            if (sure)
+                            {
+                                var bootboxContent = {title: "Create FPG", message: '<p>Please be patient...</p>'};
+                                var xhr = $.ajax({
+                                    type: 'POST',
+                                    url: '/kadmosMakeAllVariablesValid',
+                                    data: {'graphID':graphID, 'currentOrder':nodeOrder, 'sessionID': sessionID},
+                                    success: function(result)
+                                    {
+                                        if (result.includes("ERROR:"))
+                                        {
+                                            bootboxContent.message = result
+                                            kadmosErrorMessage(bootboxContent);
+                                        }
+                                        else
+                                        {
+                                            var updatedData = {};
+                                            updatedData = data;
+                                            var graphData = JSON.parse(result);             
+                                            for (var i = 0; i < updatedData.graphs.length; i++)
+                                            {
+                                                if (graphID == updatedData.graphs[i].id)
+                                                {
+                                                    updatedData.graphs[i] = graphData.graphs[0];   
+                                                }
+                                            }
+                                            
+                                            clearView();
+                                            makeKadmosMenu(updatedData);
+                                            xdsm_script(updatedData,graphID);
+                                            
+                                            bootboxContent.message = "Success!"
+                                            kadmosSuccessMessage(bootboxContent)
+                                        }
+                                    },
+                                    error: function(result)
+                                    {
+                                        bootboxContent.message = result
+                                        kadmosErrorMessage(bootboxContent);
+                                    }
+                                });
+                                kadmosHavePatience(xhr, bootboxContent)
+                            }
+                        });
+                    })
+                    
+                fpgManipulations.append("li").append("a")
+                    .text("1.8. Add problem function roles")
+                    .on("mouseover", function(){d3.select(this).style("cursor", "pointer")})
+                    .on("mousedown", function()
+                    {
+                        bootbox.hideAll();
+                        bootbox.confirm("Are you sure you want to do this?", function(sure)
+                        {
+                            if (sure)
+                            {
+                                var bootboxContent = {title: "Create FPG", message: '<p>Please be patient...</p>'};
+                                var xhr = $.ajax({
+                                    type: 'POST',
+                                    url: '/kadmosAddProblemFunctionRoles',
+                                    data: {'graphID':graphID, 'currentOrder':nodeOrder, 'sessionID': sessionID},
+                                    success: function(result)
+                                    {
+                                        if (result.includes("ERROR:"))
+                                        {
+                                            bootboxContent.message = result
+                                            kadmosErrorMessage(bootboxContent);
+                                        }
+                                        else
+                                        {
+                                            var updatedData = {};
+                                            updatedData = data;
+                                            var graphData = JSON.parse(result);             
+                                            for (var i = 0; i < updatedData.graphs.length; i++)
+                                            {
+                                                if (graphID == updatedData.graphs[i].id)
+                                                {
+                                                    updatedData.graphs[i] = graphData.graphs[0];   
+                                                }
+                                            }
+                                            
+                                            clearView();
+                                            makeKadmosMenu(updatedData);
+                                            xdsm_script(updatedData,graphID);
+                                            
+                                            bootboxContent.message = "Success!"
+                                            kadmosSuccessMessage(bootboxContent)
+                                        }
+                                    },
+                                    error: function(result)
+                                    {
+                                        bootboxContent.message = result
+                                        kadmosErrorMessage(bootboxContent);
+                                    }
+                                });
+                                kadmosHavePatience(xhr, bootboxContent)
+                            }
+                        });
+                    })
+                    
+                    
+                fpgManipulations.append("li").append("a")
+                    .text("1.9. Assign parameter roles")
+                    .on("mouseover", function(){d3.select(this).style("cursor", "pointer")})
+                    .on("mousedown", function()
+                    {
+                        bootbox.hideAll();
+                            bootbox.alert({
+                                title: "Assign parameter roles",
+                                message: "<p>Please mark all variables, which are of special interest. The options are:</p>"
+                                         +"<ul><li><b>Design Variable</b></li>"
+                                         +"<li><b>Objective Variable</b></li>"
+                                         +"<li><b>Constraint Variable</b></li>"
+                                         +"<li><b>State Variable</b> (also \"quantity of interest\")</li></ul><br/>"
+                                         +"<p>To mark special variables open the <b>Data Model/schema</b> and select the variables via right-mouse click.</p>"
+                            })
+                    })
+                
+                fpgManipulations.append("li").append("a")
+                    .text("1.10. Get Possible Function Order")
+                    .on("mouseover", function(){d3.select(this).style("cursor", "pointer")})
+                    .on("mousedown", function()
+                    {
+                        bootbox.hideAll();
+                        bootbox.prompt(
+                        {
+                            title: "Select a sorting method",
+                            inputType: 'select',
+                            value: 'single-swap',
+                            inputOptions: [
+                                        {
+                                    text: 'single-swap',
+                                    value: 'single-swap',
+                                },
+                                {
+                                    text: 'two-swap',
+                                    value: 'two-swap',
+                                },
+                                {
+                                    text: 'hybrid-swap',
+                                    value: 'hybrid-swap',
+                                },
+                                {
+                                    text: 'brute-force',
+                                    value: 'brute-force',
+                                },
+                                {
+                                    text: 'branch-and-bound',
+                                    value: 'branch-and-bound',
+                                }
+                            ],
+                            callback: function (result) {
+                                if (result)
+                                {            
+                                    var method = result;
+                                    var bootboxContent = {title: "Get Possible Function Order", message: '<p>Please be patient...</p>'};
+                                    var xhr = $.ajax({
+                                        type: 'POST',
+                                        url: '/kadmosGetPossibleFunctionOrder',
+                                        data: {'graphID':graphID, 'sortingMethod':method, 'currentOrder':nodeOrder, 'sessionID': sessionID},
+                                        success: function(result)
+                                        {
+                                            if (result.includes("ERROR:"))
+                                            {
+                                                bootboxContent.message = result
+                                                kadmosErrorMessage(bootboxContent);
+                                            }
+                                            else
+                                            {
+                                                var updatedData = {};
+                                                updatedData = data;
+                                                var graphData = JSON.parse(result);             
+                                                for (var i = 0; i < updatedData.graphs.length; i++)
+                                                {
+                                                    if (graphID == updatedData.graphs[i].id)
+                                                    {
+                                                        updatedData.graphs[i] = graphData.graphs[0];   
+                                                    }
+                                                }
+                                                
+                                                clearView();
+                                                makeKadmosMenu(updatedData);
+                                                xdsm_script(updatedData,graphID);
+                                                
+                                                bootboxContent.message = "Success!"
+                                                kadmosSuccessMessage(bootboxContent)
+                                            }
+                                        },
+                                        error: function(result)
+                                        {
+                                            bootboxContent.message = result
+                                            kadmosErrorMessage(bootboxContent);
+                                        }
+                                    });
+                                    kadmosHavePatience(xhr, bootboxContent)
+                                }
+                            }
+                        });
+                    })
+                
+                fpgManipulations.append("li").append("a")
+                    .text("1.11. Remove unused outputs")
+                    .on("mouseover", function(){d3.select(this).style("cursor", "pointer")})
+                    .on("mousedown", function()
+                    {
+                        bootbox.hideAll();
+                        bootbox.prompt(
+                        {
+                            title: "<p><b>Remove unused outputs</b></p>" 
+                                  +"<p>Do you want to clean up the graph afterwards?</p>" 
+                                  +"<b>CAUTION:</b> This will remove all unused competences automatically as well!",
+                            inputType: 'select',
+                            value: "True",
+                            inputOptions: [{text:'yes', value:'True'}, {text:'no', value:'False'}],
+                            callback: function (selection) 
+                            {
+                                if (selection)
+                                {
+                                    var bootboxContent = {title: "Enrich FPG", message: '<p>Please be patient...</p>'};
+                                    var xhr = $.ajax({
+                                        type: 'POST',
+                                        url: '/kadmosRemoveUnusedOutputs',
+                                        data: {'graphID':graphID, 'currentOrder':nodeOrder, 'cleanUp':selection, 'sessionID': sessionID},
+                                        success: function(result)
+                                        {
+                                            if (result.includes("ERROR:"))
+                                            {
+                                                bootboxContent.message = result
+                                                kadmosErrorMessage(bootboxContent);
+                                            }
+                                            else
+                                            {
+                                                var updatedData = {};
+                                                updatedData = data;
+                                                var graphData = JSON.parse(result);             
+                                                for (var i = 0; i < updatedData.graphs.length; i++)
+                                                {
+                                                    if (graphID == updatedData.graphs[i].id)
+                                                    {
+                                                        updatedData.graphs[i] = graphData.graphs[0];   
+                                                    }
+                                                }
+                                                
+                                                clearView();
+                                                makeKadmosMenu(updatedData);
+                                                xdsm_script(updatedData,graphID);
+                                                
+                                                bootboxContent.message = "Success!"
+                                                kadmosSuccessMessage(bootboxContent)
+                                            }
+                                        },
+                                        error: function(result)
+                                        {
+                                            bootboxContent.message = result
+                                            kadmosErrorMessage(bootboxContent);
+                                        }
+                                    });
+                                    kadmosHavePatience(xhr, bootboxContent)
+                                }
+                            
+                            }
+                        })
+                    })
+                //####################################################################################################################
+                
+                
+                //aigner: MDPG manipulations
+                //####################################################################################################################				
+                var mpgManipulations_ul = optionsDiv.append("ul")
+				var mpgManipulations_li = mpgManipulations_ul.append("li")
+                    .on("mouseover", function(){
+                        d3.select(this)
+                            .style("cursor", "default")
+                    })
+                mpgManipulations_li.append("a").text("2. MDPG Manipulations")
+                var mpgManipulations = mpgManipulations_li.append("ul");
+                var xOffset_ul = mpgManipulations_li._groups[0][0].offsetLeft+mpgManipulations_li._groups[0][0].offsetWidth-40;
+                mpgManipulations.style("left", String(xOffset_ul)+"px")
+                
+                
+                //aigner: Kadmos function --> Start defining MDO problem
+                mpgManipulations.append("li").append("a")
+                    .text("2.1. Start defining MDAO architecture")
+                    .on("mouseover", function(){d3.select(this).style("cursor", "pointer")})
+                    .on("mousedown", function()
+                    {
+                        bootbox.hideAll();
+                        bootbox.prompt(
+                        {
+                            title: "<p>This will create an initial MDPG for your MDO problem. After clicking this button, you can go through the \"<b>MDPG manipulation</b>\" steps."
+                                  +"<p>Please type in a new name for the graph</p>",
+                            value: currentGraph.name,
+                            callback: function(newGraphName)
+                            {
+                                if (newGraphName)
+                                {
+                                    var newGraphID = '01';
+                                    data.graphs.forEach(function(graph) 
+                                    {
+                                        id_int = parseInt(graph.id)
+                                        if (data.graphs.length < 100){newGraphID = "0" + String(id_int+1);}
+                                        else{newGraphID = String(id_int+1);}
+                                    })
+                                    var bootboxContent = {title: "Start defining MDAO architecture", message: '<p>Please be patient...</p>'};
+                                    var xhr = $.ajax({
+                                        type: 'POST',
+                                        url: '/kadmosStartDefiningMDAOArchitecture',
+                                        data: {'graphID':graphID, 'currentOrder': nodeOrder, 'newGraphName':newGraphName, 'newGraphID':newGraphID, 'sessionID': sessionID},
+                                        success: function(result)
+                                        {
+                                            if (result.includes("ERROR:"))
+                                            {
+                                                bootboxContent.message = result
+                                                kadmosErrorMessage(bootboxContent);
+                                            }
+                                            else
+                                            {
+                                                var updatedData = jQuery.extend(true, {}, data);
+                                                var graphData = JSON.parse(result);
+                                                
+                                                for (var i = 0; i < data.graphs.length; i++)
+                                                {
+                                                    if (graphID == data.graphs[i].id)
+                                                    {
+                                                        
+                                                        //Insert copied graph behind the original one
+                                                        updatedData.graphs.splice(i+1, 0, graphData.graphs[0])
+                                                    }
+                                                }
+                                                
+                                                clearView();
+                                                makeKadmosMenu(updatedData);
+                                                xdsm_script(updatedData,newGraphID);
+                                                
+                                                bootboxContent.message = "Success!"
+                                                kadmosSuccessMessage(bootboxContent)
+                                            }
+                                        },
+                                        error: function(result)
+                                        {
+                                            bootboxContent.message = result
+                                            kadmosErrorMessage(bootboxContent);
+                                        }
+                                    });
+                                    kadmosHavePatience(xhr, bootboxContent)
+                                }
+                            }
+                        })
+                    })
+                
+                
+                var MDAO_architecture = '-';
+                var coupling_decomposition = '-';
+                var DOE_method = '-';
+                mpgManipulations.append("li").append("a")
+                    .text("2.2. Select MDAO Architecture")
+                    .on("mouseover", function(){d3.select(this).style("cursor", "pointer")})
+                    .on("mousedown", function()
+                    {
+                        var theOptions = []
+                        for (var i = 0; i<MDAO_architectures.length; i++){theOptions.push({text:MDAO_architectures[i], value:MDAO_architectures[i]})}
+                        bootbox.hideAll();
+                        bootbox.prompt(
+                        {
+                            title: "Select MDAO Architecture",
+                            inputType: 'select',
+                            value: MDAO_architecture,
+                            inputOptions: theOptions,
+                            callback: function (result) {if (result){MDAO_architecture = result;}}
+                        })
+                    })
+                    
+                mpgManipulations.append("li").append("a")
+                    .text("2.3. Select Coupling Decomposition")
+                    .on("mouseover", function(){d3.select(this).style("cursor", "pointer")})
+                    .on("mousedown", function()
+                    {
+                        var theOptions = []
+                        for (var i = 0; i<coupling_decompositions.length; i++){theOptions.push({text:coupling_decompositions[i], value:coupling_decompositions[i]})}
+                        bootbox.hideAll();
+                        bootbox.prompt(
+                        {
+                            title: "Select Coupling Decomposition",
+                            value: coupling_decomposition,
+                            inputType: 'select',
+                            inputOptions: theOptions,
+                            callback: function (result) {if (result){coupling_decomposition = result;}}
+                        })
+                    })
+                    
+                mpgManipulations.append("li").append("a")
+                    .text("2.4. Select DOE Method")
+                    .on("mouseover", function(){d3.select(this).style("cursor", "pointer")})
+                    .on("mousedown", function()
+                    {
+                        var theOptions = []
+                        for (var i = 0; i<DOE_methods.length; i++){theOptions.push({text:DOE_methods[i], value:DOE_methods[i]})}
+                        bootbox.hideAll();
+                        bootbox.prompt(
+                        {
+                            title: "Select DOE Method",
+                            value: DOE_method,
+                            inputType: 'select',
+                            inputOptions: theOptions,
+                            callback: function (result) {if (result){DOE_method = result;}}
+                        })
+                    })
+                    
+                mpgManipulations.append("li").append("a")
+                    .text("2.5. Impose MDAO Architecture")
+                    .on("mouseover", function(){d3.select(this).style("cursor", "pointer")})
+                    .on("mousedown", function()
+                    {
+                        var theOptions = [{text:"yes",value:"True"},{text:"no",value:"False"}]
+                        bootbox.hideAll();
+                        bootbox.prompt(
+                        {
+                            title: "Allow Unconverged Couplings?",
+                            value: "True",
+                            inputType: 'select',
+                            inputOptions: theOptions,
+                            callback: function (result) 
+                            {
+                                if (result)
+                                {   
+                                    var allow_unconverged_couplings = result;                                    
+                                    var bootboxContent = {title: "Impose MDAO Architecture", message: '<p>Please be patient...</p>'};
+                                    var xhr = $.ajax(
+                                    {
+                                        type: 'POST',
+                                        url: '/kadmosImposeMDAOArchitecture',
+                                        data: {'graphID':graphID,
+                                               'sessionID': sessionID,
+                                               'currentOrder':nodeOrder,
+                                               'mdao_architecture':MDAO_architecture,
+                                               'doe_method':DOE_method,
+                                               'coupling_decomposition':coupling_decomposition,
+                                               'allow_unconverged_couplings':allow_unconverged_couplings},
+                                        success: function(result)
+                                        {
+                                            if (result.includes("ERROR:"))
+                                            {
+                                                bootboxContent.message = result
+                                                kadmosErrorMessage(bootboxContent);
+                                            }
+                                            else
+                                            {
+                                                var updatedData = {};
+                                                updatedData = data;
+                                                var graphData = JSON.parse(result);             
+                                                for (var i = 0; i < updatedData.graphs.length; i++)
+                                                {
+                                                    if (graphID == updatedData.graphs[i].id)
+                                                    {
+                                                        updatedData.graphs[i] = graphData.graphs[0];   
+                                                    }
+                                                }
+                                                
+                                                clearView();
+                                                makeKadmosMenu(updatedData);
+                                                xdsm_script(updatedData,graphID);
+                                                
+                                                bootboxContent.message = "Success!"
+                                                kadmosSuccessMessage(bootboxContent)
+                                            }
+                                        },
+                                        error: function(result)
+                                        {
+                                            bootboxContent.message = result
+                                            kadmosErrorMessage(bootboxContent);
+                                        }
+                                    });
+                                    kadmosHavePatience(xhr, bootboxContent)
+                                
+                                }
+                            
+                            }
+                        })
+                    })
+                //####################################################################################################################
+                
+                
+                
+				
+				//aigner: Data Model Expand Button
+				//####################################################################################################################
+				var dataModelDiv = d3.select(".xdsmDiv").append("div").attr("class","dataModelDiv").attr("transform","translate(10,0)")
+				var ul = dataModelDiv.append("ul")
+				var dropdown1 = ul.append("li").on("mouseover", function(){d3.select(this).style("cursor", "default")})
+				dropdown1.append("img").attr("src",fileReference.AGILE_Icon)
+					.attr("align","left")
+					.style("margin-left","6px")
+					.style("margin-right","-10px")
+					.style("margin-top","10px")
+					.style("margin-bottom","0px")
+					.attr("height","20")
+					.attr("width","20")
+				dropdown1.append("a").text("Data Model")
+				var links = dropdown1.append("ul");
+				for (var j=0; j< varCategories.length; j++)
+				{
+					//console.log(varCategories[j])
+					var linkLi = links.append("li");
+					var linkA = linkLi.append("a")
+						.attr("id",j)
+						.text(varCategories[j].description)
+						.on("mouseover", function(){d3.select(this).style("cursor", "pointer")})
+						.on("click", function()
+						{		
+							showFullTree(varCategories[this.id].name,varCategories[this.id].description)
+						})
+				}
+				//aigner: Set width of the div, so the VISTOMS dropdown (in the top of the page) still works
+				dataModelDiv.style("width", String(dropdown1.node().getBoundingClientRect().width+20)+"px")
+				//####################################################################################################################
+				
+                
+				//aigner: Tree option menu to select which kind of tree view the user wants to see
+				//#####################################################################//
+				var emptyArray;
+				function showFullTree(aCategory,categoryDescr)
+				{
+                    var headLine = "Full data model tree view; Categorization: " + categoryDescr;
+                    var d3_body = d3.select("body");
+                    var lobiID = String(getRandomInt(0,1000))
+                    var divClassName = 'treeDiv' + lobiID;
+                    var treeLayoutdiv = d3_body.append("div").attr("class",divClassName+" panel-default")
+													.style("left",(d3.event.pageX) + "px")
+													.style("top",(d3.event.pageY - 28) + "px")
+													.style("position", "absolute")
+                    treeLayoutdiv.append("div").attr("class","panel-heading")
+                        .append("div").attr("class","panel_title").append("h4").text(headLine)
+                    $('.' + divClassName).lobiPanel({
+                        reload: false,
+                        editTitle: false,
+                        unpin: false,
+                        minWidth: 200,
+                        maxWidth: 100000,
+                        minHeight: 200,
+                        maxHeight: 100000,
+                    });
+                    $('.'+divClassName).lobiPanel('unpin');
+					var treeLayoutSVG = treeLayoutdiv.append("svg").attr("class","treeLayoutSVG")
+					var treeLayout = treeLayoutSVG.append("g").attr("class","treeLayout");
+					maketreeLayout(emptyArray, treeLayout, treeLayoutSVG, treeLayoutdiv, divClassName, headLine, aCategory);
+				}
+				
+				var childrenItems = [];
+				for (var j=0; j< varCategories.length; j++)
+				{
+					childrenItems.push({title: 'according to ' + varCategories[j].description,
+								   varCategory: varCategories[j].name,
+								   description: varCategories[j].description,
+								   onMouseClick: function(elm, d, i) {showFullTree(d.varCategory,d.description)},
+								   onMouseOver: function(elm,d,i){}})
+				}
+				var treeOptionMenu = [
+				{
+					title: 'Show variable tree...',
+					onMouseDown: function(elm, d, i) {
+					},
+					onMouseUp: function(elm, d, i) {
+					},
+					onMouseOver: function(elm, d, i) {
+					},
+					childrenItems: childrenItems
+				}
+				]
+				//#####################################################################//
+				
+
+				//create the xdsm div
+				d3.select(".xdsmDiv").append("div").attr("class","xdsm");
+				//create tooltip
+				var tooltip = d3.select(".xdsmDiv").selectAll(".tooltip").data(['tooltip'])
+							  .enter().append("div")
+							.attr("class", "tooltip")
+							.style("opacity", 0);
+
+				var scenarioKeys = Object.keys(mdo).sort();
+				var xdsms = {};
+				
+				//If there is only one MDO and it is not named root, then it is created
+				if (scenarioKeys.indexOf('root') === -1) 
+				{
+					var scenarioKeys_tmp = [];
+					scenarioKeys_tmp.push('root');
+					scenarioKeys = scenarioKeys_tmp;
+					var mdo_tmp={};
+					mdo_tmp['root']=mdo;
+					mdo = mdo_tmp;
+				} 		
+				// new format managing several XDSM
+				var index = scenarioKeys.indexOf('root');
+				if (index > -1) 
+				{
+					scenarioKeys.splice(index, 1);
+				}
+				scenarioKeys.unshift('root');
+
+				var xdsm;
+				scenarioKeys.forEach(function(k) 
+				{
+					if (mdo.hasOwnProperty(k) && k =="root") 
+					{
+						//aigner: Here the graphs are created
+						var graph = new Graph(mdo[k], k);
+						//aigner: Here the xdsms are drawn
+						xdsms[k] = new Xdsm(graph, k, tooltip);
+						xdsms[k].draw(currentGraph.name);
+						xdsm = xdsms[k];
+						update_subXdsm(xdsms, k);
+						prepareTreeLayout(xdsms, k);
+					}
+				}, this)
+				
+					
+				xdsm.svg.selectAll(".node")
+				.each(function(d) 
+				{		
+					var gNode = this;
+					var d3gNode = d3.select(gNode);
+					
+					//aigner: Creation of input/output tree
+					//############################################################
+					function showIOTree(aCategory, categoryDescr, k, io)
+					{
+						var edges = d3.selectAll(".edge");
+						var array="";
+						var name;
+						edges.each(function(d)
+						{			
+							if (io=="in")
+							{
+								name = "Input tree view: " + k.id + "; Categorization: " + categoryDescr;
+								if (d.to == k.id)
+								{
+									array = array + "," + d.name;
+								}
+							}
+							else if (io=="out")
+							{
+								name = "Output tree view:" + k.id + "; Categorization: " + categoryDescr;
+								if (d.from == k.id)
+								{
+									array = array + "," + d.name;
+								}
+							}
+						})
+                        
+                        
+                        var headLine = name;
+                        var d3_body = d3.select("body");
+                        var lobiID = String(getRandomInt(0,1000))
+                        var divClassName = "treeDiv" + lobiID;
+                        var treeLayoutdiv = d3_body.append("div").attr("class",divClassName + " panel-default")
+                                                        .style("left",(d3.event.pageX) + "px")
+                                                        .style("top",(d3.event.pageY - 28) + "px")
+                                                        .style("position", "absolute")
+                        treeLayoutdiv.append("div").attr("class","panel-heading")
+                            .append("div").attr("class","panel_title").append("h4").text(headLine)
+                        $('.'+divClassName).lobiPanel({
+                            reload: false,
+                            editTitle: false,
+                            unpin: false,
+                            minWidth: 1000,
+                            maxWidth: 100000,
+                            minHeight: 500,
+                            maxHeight: 100000,
+                        });
+                        $('.'+divClassName).lobiPanel('unpin');
+                        var treeLayoutSVG = treeLayoutdiv.append("svg").attr("class","treeLayoutSVG")
+                        var treeLayout = treeLayoutSVG.append("g").attr("class","treeLayout");
+                        maketreeLayout(array, treeLayout, treeLayoutSVG, treeLayoutdiv, divClassName, headLine, aCategory);
+					}
+					//############################################################
+					
+					var inputChildrenitems = [];
+					var outputChildrenitems = [];
+					for (var j=0; j< varCategories.length; j++)
+					{
+						inputChildrenitems.push({title: 'according to ' + varCategories[j].description,
+												 varCategory: varCategories[j].name,
+												 description: varCategories[j].description,
+												 onMouseClick: function(elm, data, i) {showIOTree(data.varCategory,data.description,d,"in")},
+												 onMouseOver: function(elm,data,i){}});
+						outputChildrenitems.push({title: 'according to ' + varCategories[j].description,
+												 varCategory: varCategories[j].name,
+												 description: varCategories[j].description,
+												 onMouseClick: function(elm, data, i) {showIOTree(data.varCategory,data.description,d,"out")},
+												 onMouseOver: function(elm,data,i){}});
+					}
+					
+				
+                    
+                    function showToolTable(aTool)
+                    {
+                        var aToolNameSplit = aTool.name.split(': ')			
+						var headLine;
+						if (aToolNameSplit.length>1){headLine = "Competence Information: (" + aToolNameSplit[1] + ")";}
+						else {headLine = "Competence Information: (" + aToolNameSplit[0] + ")";}
+                        
+                        
+                        var data = [];
+						// render the table(s)
+						if (aTool.metadata.length==0)
+						{
+							data.push({ "name" : "NO TOOL METADATA AVAILABLE", "value" : "..." })
+						}
+						function findSubMetaData(aMetaData)
+						{
+							for(var key in aMetaData)
+							{
+								if (typeof aMetaData[key] === 'object')
+								{
+									data.push({ "name" : key, "value" : ''}) ;
+									findSubMetaData(aMetaData[key]);
+								}
+								else
+								{
+									data.push({ "name" : key, "value" : aMetaData[key] })
+								}
+							}
+						}
+						for (var j=0; j < aTool.metadata.length;j++)
+						{
+							var metaData = aTool.metadata[j];
+							findSubMetaData(metaData);						
+						}
+                    
+                        
+                        var d3_body = d3.select("body");
+                        
+                        var panel_div = d3_body.append("div").attr("class", "myPanel panel-default")
+                        panel_div.append("div").attr("class","panel-heading")
+                            .append("div").attr("class","panel_title").append("h4").text(headLine)
+                        var listGroup = panel_div.append("div").attr("class","panel-body")
+                            .append("table").attr("id","myTable")
+                            .append("tbody")
+                            
+                        data.forEach(function(listElement)
+                        {
+                            var row = listGroup.append("tr")
+                            row.append("td").text(listElement.name)
+                            row.append("td").text(listElement.value)
+                            
+                        })
+                        $('.myPanel').lobiPanel({
+                            reload: false,
+                            editTitle: false,
+                            expand: false,
+                            unpin: false,
+                            resize: "none",
+                            minWidth: 200,
+                            minHeight: 200,
+                            maxWidth: 1100,
+                            maxHeight: 1200,
+                        });
+                        $('.myPanel').lobiPanel('unpin');
+                    }
+					
+                    
+                    function changeNodePosition(aNode)
+                    {               
+                        var theOptions = [{text: 'Choose new position...', value: '',}];
+                        for (var j=1; j<currentGraph.xdsm.nodes.length;j++)
+                        {
+                            //aigner: value: j-1 because in KADMOS the coordinator is not in the node list, therefore all other competences' indices are decreased by 1!
+                            theOptions.push({text: String(j) + " ("+currentGraph.xdsm.nodes[j].name+")", value: j-1});
+                        }
+                        bootbox.hideAll();
+                        bootbox.prompt(
+                        {
+                            title: "Please specify a new position for the competence \""+aNode.name+"\"",
+                            inputType: 'select',
+                            inputOptions: theOptions,
+                            callback: function (newPos) {
+                                if (newPos!=null && newPos !='')
+                                {
+                                    bootbox.hideAll();
+                                    bootbox.confirm("Are you sure you want to do this?", function(sure){
+                                        if (sure)
+                                        {
+                                            var bootboxContent = {title: "Change competence position", message: '<p>Please be patient...</p>'};
+                                            var xhr = $.ajax({
+                                                type: 'POST',
+                                                url: '/kadmosChangeNodePos',
+                                                data: {'graphID':graphID, 'nodeName':aNode.uID, 'newPos':newPos, 'currentOrder':nodeOrder, 'sessionID': sessionID},
+                                                success: function(result)
+                                                {
+                                                    if (result.includes("ERROR:"))
+                                                    {
+                                                        bootboxContent.message = result
+                                                        kadmosErrorMessage(bootboxContent);
+                                                    }
+                                                    else
+                                                    {
+                                                        var updatedData = {};
+                                                        updatedData = data;
+                                                        var graphData = JSON.parse(result);             
+                                                        for (var i = 0; i < updatedData.graphs.length; i++)
+                                                        {
+                                                            if (graphID == updatedData.graphs[i].id)
+                                                            {
+                                                                updatedData.graphs[i] = graphData.graphs[0];   
+                                                            }
+                                                        }
+                                                        
+                                                        clearView();
+                                                        makeKadmosMenu(updatedData);
+                                                        xdsm_script(updatedData,graphID);
+                                                        
+                                                        bootboxContent.message = "Success!"
+                                                        kadmosSuccessMessage(bootboxContent)
+                                                    }
+                                                },
+                                                error: function(result)
+                                                {
+                                                    bootboxContent.message = result
+                                                    kadmosErrorMessage(bootboxContent);
+                                                }
+                                            });
+                                            kadmosHavePatience(xhr, bootboxContent)
+                                        }
+                                    })
+                                }
+                            }
+                        });
+                    }
+                    function deleteNode(aNode)
+                    {               
+                        bootbox.hideAll();
+                        bootbox.confirm("Are you sure you want to do this?", function(sure)
+                        {
+                            if (sure)
+                            {                                
+                                var bootboxContent = {title: "Delete competence", message: '<p>Please be patient...</p>'};
+                                var xhr = $.ajax({
+                                    type: 'POST',
+                                    url: '/kadmosDeleteNode',
+                                    data: {'graphID':graphID, 'nodeName':aNode.uID, 'currentOrder':nodeOrder, 'sessionID': sessionID},
+                                    success: function(result)
+                                    {
+                                        if (result.includes("ERROR:"))
+                                        {
+                                            bootboxContent.message = result
+                                            kadmosErrorMessage(bootboxContent);
+                                        }
+                                        else
+                                        {
+                                            var updatedData = {};
+                                            updatedData = data;
+                                            var graphData = JSON.parse(result);             
+                                            for (var i = 0; i < updatedData.graphs.length; i++)
+                                            {
+                                                if (graphID == updatedData.graphs[i].id)
+                                                {
+                                                    updatedData.graphs[i] = graphData.graphs[0];   
+                                                }
+                                            }
+                                            
+                                            clearView();
+                                            makeKadmosMenu(updatedData);
+                                            xdsm_script(updatedData,graphID);
+                                            
+                                            bootboxContent.message = "Success!"
+                                            kadmosSuccessMessage(bootboxContent)
+                                        }
+                                    },
+                                    error: function(result)
+                                    {
+                                        bootboxContent.message = result
+                                        kadmosErrorMessage(bootboxContent);
+                                    }
+                                });
+                                kadmosHavePatience(xhr, bootboxContent)
+                            }
+                        })
+                    }
+                    
+                    
+                    
+					//menu --> functions for right click options
+					var toolMenu = [
+					{
+						title: 'Show competence info',
+						onMouseDown: function(elm, k, i) {
+							showToolTable(k);
+						},
+						onMouseUp: function(elm, k, i) {
+						},
+						onMouseOver: function(elm, d, i) {
+						},
+						childrenItems: []
+					},
+					{
+						title: 'Show input variable tree...',
+						onMouseDown: function(elm, k, i) {
+						},
+						onMouseUp: function(elm, k, i) {
+						},
+						onMouseOver: function(elm, d, i) {
+						},
+						childrenItems: inputChildrenitems
+					},
+					{
+						title: 'Show output variable tree...',
+						onMouseDown: function(elm, k, i) {
+						},
+						onMouseUp: function(elm, k, i) {
+						},
+						onMouseOver: function(elm, d, i) {
+						},
+						childrenItems: outputChildrenitems
+					},
+                    {
+                        title: 'Change competence position in the graph',
+						onMouseDown: function(elm, k, i) {
+                            changeNodePosition(k);
+						},
+						onMouseUp: function(elm, k, i) {
+						},
+						onMouseOver: function(elm, d, i) {
+						},
+						childrenItems: []
+                    },
+                    {
+                        title: 'Delete competence',
+						onMouseDown: function(elm, k, i) {
+                            deleteNode(k);
+						},
+						onMouseUp: function(elm, k, i) {
+						},
+						onMouseOver: function(elm, d, i) {
+						},
+						childrenItems: []
+                    }
+                    
+					]
+                    
+                    //menu --> functions for right click options (special case coordinator)
+                    var toolMenuCoor = [
+					{
+						title: 'Show competence info',
+						onMouseDown: function(elm, k, i) {
+							showToolTable(k);
+						},
+						onMouseUp: function(elm, k, i) {
+						},
+						onMouseOver: function(elm, d, i) {
+						},
+						childrenItems: []
+					},
+					{
+						title: 'Show input variable tree...',
+						onMouseDown: function(elm, k, i) {
+						},
+						onMouseUp: function(elm, k, i) {
+						},
+						onMouseOver: function(elm, d, i) {
+						},
+						childrenItems: inputChildrenitems
+					},
+					{
+						title: 'Show output variable tree...',
+						onMouseDown: function(elm, k, i) {
+						},
+						onMouseUp: function(elm, k, i) {
+						},
+						onMouseOver: function(elm, d, i) {
+						},
+						childrenItems: outputChildrenitems
+					}
+					]
+					
+					scenarioKeys.forEach(function(k)
+					{
+						if (k == d.xdsm)
+						{
+							var cx, cy;
+							for (var j=0; j < gNode.childNodes.length; j++)
+							{
+								if(gNode.childNodes[j].nodeName != "text")
+								{
+									cx = gNode.childNodes[j].getAttribute("width")/2-13;
+									cy = -gNode.childNodes[j].getAttribute("height")/2+8;
+								}
+							}
+							//Expand Symbol is created
+							var expandSymbol = d3.select(gNode).append("g").attr("class", "expandSymbol");
+							var circle = expandSymbol.append("circle")
+								.attr("cx", cx)
+								.attr("cy", cy);
+							var line1 = expandSymbol.append("line");
+							var line2 = expandSymbol.append("line");
+							drawExpandSymbol( circle, line1,line2);
+							expandSymbol = expandSymbol
+							.on("mouseover", function(){circle.style("fill-opacity", .8);})
+							.on("mouseout", function(){circle.style("fill-opacity", .6)})
+							
+							//TODO - aigner: on mouseover there should be a text box telling the options
+							d3gNode = d3gNode
+							.on("click", function()
+							{
+								//On mousedown, additional sub-workflows will be visualized
+								var createNew = true;
+								if(xdsms[k]){createNew=false;}                    
+								if (createNew == true)
+								{
+									var graph = new Graph(mdo[k], k);
+									xdsms[k] = new Xdsm(graph, k, tooltip);
+									xdsms[k].draw(currentGraph.name);
+									update_subXdsm(xdsms, k);
+									prepareTreeLayout(xdsms, k);
+									//Remove Symbol is created
+									var removeSymbol = xdsms[k].svg.append("g")
+										.attr("class", "removeSymbol");
+									var circle = removeSymbol.append("circle");
+									var minus = removeSymbol.append("line");
+									drawRemoveSymbol(xdsms[k], circle, minus);
+									//Clicking on remove symbol will remove sub-workflow
+									removeSymbol.append("svg:title").text("Click right to inspect");
+									removeSymbol = removeSymbol
+									.on("mouseover", function(){
+										circle.style("fill", "red").style("fill-opacity", .8);})
+									.on("mouseout", function(){
+										circle.style("fill", "red").style("fill-opacity", .6)})
+									.on("mousedown", function(){circle.style("fill", "darkred").style("fill-opacity",1);})
+									.on("mouseup", function(d)
+									{
+										xdsms[k].svg.remove();
+										d3.select(".treeDiv"+k).remove();
+										delete xdsms[k];
+									})
+									
+									xdsms[k].svg.selectAll(".node")
+										.each(function(d) 
+										{		
+											var gNode = this;
+											d3.select(gNode).on('contextmenu', d3.contextMenu(toolMenu));
+										})
+								}
+							})
+						}
+					})
+					d3gNode.append("svg:title").text("Click right to inspect");
+                    d3gNode = d3gNode.on('mouseover', function(){d3.select(this).style("cursor", "pointer")});
+                    if (this.__data__.name == "Coordinator")
+                    {
+                        d3gNode = d3gNode.on('contextmenu', d3.contextMenu(toolMenuCoor))
+                    }
+                    else
+                    {
+                        d3gNode = d3gNode.on('contextmenu', d3.contextMenu(toolMenu))
+                    }
+				})	
+				
+				function prepareTreeLayout(xdsms, refName)
+				{			
+					function showEdgeTree(data,aVarCategory,categoryDescr)
+					{
+                        var headLine = "Tree view: " + data.from + "  →  " + data.to + "; Categorization: " + categoryDescr;
+                        var d3_body = d3.select("body");
+                        var lobiID = String(getRandomInt(0,1000))
+                        var divClassName = "treeDiv" + lobiID;
+                        var treeLayoutdiv = d3_body.append("div").attr("class",divClassName + " panel-default")
+                                                        .style("left",(d3.event.pageX) + "px")
+                                                        .style("top",(d3.event.pageY - 28) + "px")
+                                                        .style("position", "absolute")
+                        treeLayoutdiv.append("div").attr("class","panel-heading")
+                            .append("div").attr("class","panel_title").append("h4").text(headLine)
+                        $('.'+divClassName).lobiPanel({
+                            reload: false,
+                            editTitle: false,
+                            unpin: false,
+                            minWidth: 1000,
+                            maxWidth: 100000,
+                            minHeight: 500,
+                            maxHeight: 100000,
+                        });
+                        $('.'+divClassName).lobiPanel('unpin');
+                        var treeLayoutSVG = treeLayoutdiv.append("svg").attr("class","treeLayoutSVG")
+                        var treeLayout = treeLayoutSVG.append("g").attr("class","treeLayout");
+                        maketreeLayout(data.name, treeLayout, treeLayoutSVG, treeLayoutdiv, divClassName, headLine, aVarCategory);
+					}
+					
+					function showEdgeTable(anEdge)
+					{						                        
+                        var headLine = "Edge Information (" + anEdge.from + " - " + anEdge.to + ")";
+						var anEdgeNameSplit = anEdge.name.split(',')
+						var numberOfconnections = anEdgeNameSplit.length;
+						var dimension=0;
+						var nullDim=false;
+						var undefinedLeafs;
+						var theLeafNodes = (JSON.parse(JSON.stringify(currentGraph.variableSchemes[varCategories[0].name])));
+						var pipeData = anEdge.name;
+						prune_tree(pipeData,theLeafNodes)
+						var undefLeafsNumber=0;
+						var defLeafsNumber=0;
+						for (var k=0;k<theLeafNodes.length;k++)
+						{
+							if (theLeafNodes[k].dimension!=null){dimension = dimension+theLeafNodes[k].dimension}
+							else{nullDim=true}
+							if (theLeafNodes[k].value.includes("could not be found")||theLeafNodes[k].value.includes("unknown"))
+							{
+								if (undefLeafsNumber==0){undefinedLeafs += theLeafNodes[k].xPath;}
+								else {undefinedLeafs += "," + theLeafNodes[k].xPath;}
+								undefLeafsNumber ++;
+							}
+							else
+							{
+								defLeafsNumber++;
+							}
+						}
+						
+						//Render data for table
+						var data = [];
+						data.push({ "name" : "Total number of connections", "value" : numberOfconnections })
+						data.push({ "name" : "Number of referenced connections", "value" : defLeafsNumber })
+						data.push({ "name" : "Dimension of referenced connections", "value" : String(dimension) })
+						if (undefinedLeafs)
+						{
+							data.push({ "name" : "Number of unreferenced connections", "value" :  undefLeafsNumber})					
+						}
+						
+                        var d3_body = d3.select("body");
+                        
+                        var panel_div = d3_body.append("div").attr("class", "myPanel panel-default")
+                        panel_div.append("div").attr("class","panel-heading")
+                            .append("div").attr("class","panel_title").append("h4").text(headLine)
+                        var listGroup = panel_div.append("div").attr("class","panel-body")
+                            .append("table").attr("id","myTable")
+                            .append("tbody")
+                            
+                        data.forEach(function(listElement)
+                        {
+                            var row = listGroup.append("tr")
+                            row.append("td").text(listElement.name)
+                            row.append("td").text(listElement.value)
+                            
+                        })
+                        $('.myPanel').lobiPanel({
+                            reload: false,
+                            editTitle: false,
+                            expand: false,
+                            unpin: false,
+                            resize: "none",
+                            minWidth: 200,
+                            minHeight: 200,
+                            maxWidth: 1100,
+                            maxHeight: 1200,
+                        });
+                        $('.myPanel').lobiPanel('unpin');
+					}
+					
+					xdsms[refName].svg.selectAll(".edge")
+					.each(function(d) 
+					{
+						//edgeMenu --> functions for right click options
+						var edgeChildrenItems = [];
+						for (var j=0; j< varCategories.length; j++)
+						{
+							edgeChildrenItems.push({title: 'according to ' + varCategories[j].description,
+													varCategory: varCategories[j].name,
+													description: varCategories[j].description,
+													onMouseClick: function(elm, data, i) {showEdgeTree(d,data.varCategory,data.description)},
+													onMouseOver: function(elm,data,i){}});
+						}
+						var theEdge = this;
+						var edgeMenu = [
+						{
+							title: 'Show edge info',
+							onMouseDown: function(elm, k, i) {
+								showEdgeTable(d)
+							},
+							onMouseUp: function(elm, k, i) {
+							},
+							onMouseOver: function(elm, d, i) {
+							},
+							childrenItems: []
+						},
+						{
+							title: 'Show variable tree...',
+							onMouseDown: function(elm, k, i) {
+							},
+							onMouseUp: function(elm, k, i) {
+							},
+							onMouseOver: function(elm, d, i) {
+							},
+							childrenItems: edgeChildrenItems
+						}
+                        ,
+						{
+							title: 'Delete a variable connection here...',
+							onMouseDown: function(elm, k, i) {
+                                deleteEdge(k)
+							},
+							onMouseUp: function(elm, k, i) {
+							},
+							onMouseOver: function(elm, d, i) {
+							},
+							childrenItems: {}
+						}
+						]
+                        
+                        function deleteEdge(anEdge)
+                        {         
+                            bootbox.hideAll();
+                            bootbox.confirm({
+								title: "Delete output from competence " + anEdge.from_uID,
+								message: "<form id='infos' action=''>\Full xPath of the variable: <input type='text' name='edgeName' />\</form>",
+								callback: function(result) {
+                                        if(result)
+                                        {
+                                            var formData = $('#infos').submit()[0];
+                                            bootbox.confirm("Are you sure you want to do this?", function(sure)
+                                            {
+                                                if (sure)
+                                                {
+                                                    var bootboxContent = {title: "Delete variable connection", message: '<p>Please be patient...</p>'};
+                                                    var xhr = $.ajax({
+                                                        type: 'POST',
+                                                        url: '/kadmosDeleteEdge',
+                                                        data: {graphID: graphID, nodeName: anEdge.from_uID, edgeName: formData[0].value, 'currentOrder':nodeOrder, 'sessionID': sessionID},
+                                                        success: function(result)
+                                                        {
+                                                            if (result.includes("ERROR:"))
+                                                            {
+                                                                bootboxContent.message = result
+                                                                kadmosErrorMessage(bootboxContent);
+                                                            }
+                                                            else
+                                                            {
+                                                                var updatedData = {};
+                                                                updatedData = data;
+                                                                var graphData = JSON.parse(result);             
+                                                                for (var i = 0; i < updatedData.graphs.length; i++)
+                                                                {
+                                                                    if (graphID == updatedData.graphs[i].id)
+                                                                    {
+                                                                        updatedData.graphs[i] = graphData.graphs[0];   
+                                                                    }
+                                                                }
+                                                                                                                                
+                                                                clearView();
+                                                                makeKadmosMenu(updatedData);
+                                                                xdsm_script(updatedData,graphID);
+                                                                
+                                                                bootboxContent.message = "Success!"
+                                                                kadmosSuccessMessage(bootboxContent)
+                                                            }
+                                                        },
+                                                        error: function(result)
+                                                        {
+                                                            bootboxContent.message = result
+                                                            kadmosErrorMessage(bootboxContent);
+                                                        }
+                                                    });
+                                                    kadmosHavePatience(xhr, bootboxContent)
+                                                }
+                                            })
+                                        }
+									}     
+                            });
+                            
+                            $('form').on('submit',function(event){
+                                event.preventDefault();
+                                
+                                var formData = new FormData($('form')[0]);
+                                formData.append('graphID', graphID);
+                                
+                            });
+                        
+                        
+                        }
+						
+						var thisEdge = d3.select(this);
+						//thisEdge.append("svg:title").text("Click right to inspect");
+						thisEdge.on('contextmenu', d3.contextMenu(edgeMenu))
+					})
+				}
+				
+               
+				function maketreeLayout(pipeData, layout, svg, div, aLobiID, aName, aVarCategory)
+				{			
+                    var treeData = (JSON.parse(JSON.stringify(currentGraph.variableSchemes[aVarCategory])));				
+                    //aigner: Build the tree layout                    
+                    //######################################################################
+                    //Function to prune the tree according to list of xPaths that are actually there
+                    //The tree will only be pruned if there is pipeData, such as in an edge or for the input of a tool
+                    if (pipeData)
+                    {
+                        prune_tree(pipeData, treeData);
+                    }                    
+                    //build tree layout for vistoms
+                    var newTree = {};
+                    buildTree(newTree, treeData)                    
+                    treeData = newTree
+                    //######################################################################
+                    
+                    // Set the dimensions and margins of the diagram
+                    var margin = {top: 20, right: 90, bottom: 20, left: 90},
+                        width = 960 - margin.left - margin.right,
+                        height = 500 - margin.top - margin.bottom;
+
+                    // append the svg object to the body of the page
+                    // appends a 'group' element to 'svg'
+                    // moves the 'group' element to the top left margin
+                    var offset_tmp = 60;
+                    svg = svg.attr("width", width + margin.right + margin.left+offset_tmp)
+                             .attr("height", height + margin.top + margin.bottom+offset_tmp);
+                    div = div.attr("width", width + margin.right + margin.left+offset_tmp)
+                             .attr("height", height + margin.top + margin.bottom+offset_tmp);
+                    layout = layout
+                        .attr("width", width + margin.right + margin.left)
+                        .attr("height", height + margin.top + margin.bottom);
+                    var name;
+                    var rect = layout.append("rect")
+                            .attr("class","treeFrame")
+                            .attr("width", 0)
+                            .attr("height", 70)
+                            .attr("transform", "translate("
+                              + String(10) + "," + String(10) + ")")
+                            .attr("fill", "white")
+                            .attr("stroke", "darkgrey")
+                            .attr("stroke-width", 0)
+                            .attr("fill-opacity", 0.8)
+                    //aigner: Put remove button on top of the rect
+                    d3.selectAll(".treeRemoveSymbol").moveToFront();
+                    
+                    //aigner: Exit, if no tree data is available!
+                    if (!treeData.children || treeData.children.length==0)
+                    {
+                        var newText = layout.append('text')
+                        .attr("dx", 40)
+                        .attr("dy", 55)
+                        .style("font-family", "Arial")
+                        .style("font-size", "32pt")
+                        .style("font-weight", "bold")
+                        .html(function (d) {
+                            return 'No tree view available! &#8594; Please check data for consistency!';
+                        });
+                        
+                        var newWidth;
+                        rect.attr("width",  function(d) {
+                            newWidth = this.parentNode.getBBox().width+20;
+                            return newWidth;}) 
+                        div = div.attr("width", newWidth+30)
+                        svg = svg.attr("width", newWidth+30)
+                        return;
+                    }
+                    
+                    // Calculate total nodes, max label length
+                    var totalNodes = 0;
+                    var maxLabelLength = 0;
+                    
+                    var i = 0,
+                        duration = 500,
+                        root;
+
+                    // declares a tree layout and assigns the size
+                    var treemap = d3.tree().size([height, width]);
+
+                    // Assigns parent, children, height, depth
+                    root = d3.hierarchy(treeData, function(d) { return d.children; });
+                    root.x0 = height / 2;
+                    root.y0 = 0;
+                    
+                    // Append a group which holds all nodes and which the zoom Listener can act upon.
+                    var svgGroup_xOff = root.data.name.length*10
+                    var svgGroup = layout.append("g")
+                        .attr("transform", "translate("+ svgGroup_xOff + "," + String(margin.top+10) + ")");
+                    
+                        
+                    // Collapse root initially
+                    collapse(root);
+                    update(root);
+
+                    // Collapse the node and all it's children
+                    function collapse(d) {
+                      if(d.children) {
+                        d._children = d.children
+                        d._children.forEach(collapse)
+                        d.children = null
+                      }
+                    }
+                    // Collapse the node and all it's children
+                    function expand(d) {
+                      if(d._children) {
+                        d.children = d._children
+                        d.children.forEach(expand)
+                        d._children = null
+                      }
+                    }
+                    // Toggle children on click.
+                    function click(d) 
+                    {
+                        if (d.children) {
+                            d._children = d.children;
+                            d.children = null;
+                        } else 
+                        {
+                            d.children = d._children;
+                            d._children = null;
+                        }
+                        update(d);
+                    }
+                    // Collapse/expand entire tree on double-click
+                    function dblclick(d) 
+                    {
+                        if(d.children) 
+                        {
+                            collapse(d);
+                        }
+                        else if(d._children)
+                        {
+                            expand(d);
+                        }
+                        update(d);
+                    }	
+                    
+                    function update(source) 
+                    {
+                        var levelWidth = [1];
+                        var getLevelWidth = function(level, n) 
+                        {
+                            if (n.children && n.children.length > 0) {
+                                if (levelWidth.length <= level + 1) levelWidth.push(0);
+                                
+                                //establish maxLabelLength
+                                maxLabelLength = Math.max(n.data.name.length, maxLabelLength);
+                                
+                                levelWidth[level + 1] += n.children.length;
+                                n.children.forEach(function(d) {
+                                    getLevelWidth(level + 1, d);
+                                });
+                            }
+                        };
+                        getLevelWidth(0, root);
+                        var newHeight = d3.max(levelWidth) * 60; // 20 pixels per line
+                        //BENNI: fill in viewerHeight instead of newHeight for other expanding/collapsing beaviour 
+                        
+                        layout = layout.attr("height", newHeight + margin.top + margin.bottom)
+                        svgGroup = svgGroup.attr("height", newHeight + margin.top + margin.bottom)
+                        treemap = treemap.size([newHeight, width]);
+                        
+                        
+                        // Assigns the x and y position for the nodes
+                        var treeData = treemap(root);
+
+                        // Compute the new tree layout.
+                        var nodes = treeData.descendants(),
+                            links = treeData.descendants().slice(1);
+                        
+                        //aigner: count all descendants of a node
+                        function countDescendants(node, counter) 
+                        {
+                            if (node._children)
+                            {
+                                node._children.forEach(function(n)
+                                {
+                                    counter = countDescendants(n, counter);
+                                });
+                            }
+                            else if (node.children)
+                            {
+                                node.children.forEach(function(n)
+                                {
+                                    counter = countDescendants(n, counter);
+                                });
+                            }
+                            else
+                            {
+                                counter ++;
+                            }
+                            return counter;
+                        }
+                        
+                        
+                        var depth_tmp = 0;
+                        var labelLength = [];
+                        labelLength.push(0);
+                        nodes.forEach(function(d) 
+                        {				
+                            //aigner: If node is collapsed show number of ancestors
+                            if (d._children)
+                            {
+                                d._childrenNum = countDescendants(d, 0);
+                                d.data.text = d.data.name + " (" + d._childrenNum + ")";
+                            }
+                            else 
+                            {
+                                d.data.text = d.data.name
+                            }
+                            
+                            //aigner: Find maximum labelLength for each level
+                            if (d.depth>depth_tmp)
+                            {
+                                depth_tmp = d.depth;
+                                labelLength.push(d.data.text.length);
+                            }
+                            else
+                            {
+                                if (d.depth!=0){labelLength[labelLength.length-1] = Math.max(d.data.text.length, labelLength[labelLength.length-1]);}
+                            }
+                        });
+                        // Set widths between levels based on labelLength of each level.
+                        var y_tmp = 100;		
+                        var depth_tmp = 0;							
+                        nodes.forEach(function(d) 
+                        {
+                            if (d.depth>depth_tmp)
+                            {
+                                depth_tmp = d.depth;
+                                d.y = y_tmp+(labelLength[depth_tmp])*12+50;
+                            }
+                            else
+                            {
+                                d.y = y_tmp;
+                            }
+                            newWidth=d.y;
+                            y_tmp = d.y;
+                        });
+                        
+                        newWidth=Math.max(newWidth,getTextWidth(aName,"Arial 12pt"));
+                        //aigner: Adjust height and width of the frame
+                        $('.' + aLobiID).lobiPanel('setWidth', newWidth + margin.top + margin.bottom +400+maxLabelLength*25+offset_tmp);
+                        $('.' + aLobiID).lobiPanel('setHeight', newHeight + margin.top + 2*margin.bottom+offset_tmp);
+                        div = div.attr("height", newHeight + margin.top + margin.bottom+offset_tmp)
+                        div = div.attr("width", newWidth + margin.top + margin.bottom +400+maxLabelLength*25+offset_tmp)
+                            .on("mousedown", function(d) {
+                                //d3.select(this).moveToFront();
+                            })
+                        svg = svg.attr("height", newHeight + margin.top + margin.bottom+offset_tmp)
+                        svg = svg.attr("width", newWidth + margin.top + margin.bottom +400+maxLabelLength*25+offset_tmp)
+                        rect = rect.attr("height", newHeight + margin.top + margin.bottom)
+                        rect = rect.attr("width", newWidth + margin.top + margin.bottom+400+maxLabelLength*15)
+                        
+                        
+                        
+                        // ****************** Nodes section ***************************
+                        // Update the nodes...
+                        var node = svgGroup.selectAll('g.treeNode')
+                          .data(nodes, function(d) {return d.id || (d.id = ++i); });
+                        
+                        var dblclick_timer = false;
+                        // Enter any new modes at the parent's previous position.
+                        var nodeEnter = node.enter().append('g')
+                          .attr('class', 'treeNode')
+                          .attr("transform", function(d) {
+                            return "translate(" + source.y0 + "," + source.x0 + ")";
+                        })
+                        .on("mousedown", function(d) {
+                            //prevent tree from expanding on right click!
+                            if (d3.event.which != 3)
+                            {
+                                // if double click timer is active, this click is the double click
+                                if ( dblclick_timer )
+                                {
+                                    clearTimeout(dblclick_timer)
+                                    dblclick_timer = false
+                                    // double click code code comes here
+                                    //console.log("DOUBLE CLICK")
+                                    dblclick(d);
+                                }
+                                // otherwise, what to do after single click (double click has timed out)
+                                else dblclick_timer = setTimeout( function(){
+                                    dblclick_timer = false
+                                    // single click code code comes here
+                                    //console.log("SINGLE CLICK")
+                                    click(d);
+                                }, 250)
+                            }
+                            
+                        })
+                        
+                        // Add Circle for the nodes
+                        nodeEnter.append('circle')
+                          .attr('class', 'treeNode')
+                          .attr('r', 4.5)
+                          .style("fill", function(d) {
+                                if (d._children)
+                                {
+                                    if(aName.includes("Input")){return '#ea9999'}
+                                    else if(aName.includes("Output")){return '#d6ea99'}
+                                    else {return "lightsteelblue"}
+                                }
+                                else {return "#fff"}
+                          })
+                          .style("stroke", function(d) {
+                                if(aName.includes("Input")){
+                                    //console.log(d);
+                                    return '#CC0000'}
+                                else if(aName.includes("Output")){
+                                    //console.log(d);
+                                    return '#99CC00'}
+                          });
+
+                        // Add labels for the nodes
+                        nodeEnter.append('text')
+                          .attr('class', 'nodeText')
+                          .attr("dy", ".35em")
+                          .attr("x", function(d) {
+                              return d.children || d._children ? -13 : 13;
+                          })
+                          .attr("text-anchor", function(d) {
+                              return d.children || d._children ? "end" : "start";
+                          })
+                          //.text(function(d) { return d.data.text; });
+                          
+                        
+                        //Highlight function, that shows usage of a node in the XDSM
+                        function highlight(data,aText)
+                        {
+                            aText = "/"+data.data.name+aText;
+                            if (data.parent){highlight(data.parent,aText)}
+                            else
+                            {
+                                scenarioKeys.forEach(function(k)
+                                {
+                                    var xdsm_tmp;
+                                    xdsm_tmp = xdsms[k];
+                                    if (xdsm_tmp)
+                                    {
+                                        xdsm_tmp.svg.selectAll(".edge").each(function(p) 
+                                        {
+                                            var firstElement_tmp = p.name.split("/")[1]
+                                            var text_fromFirst = "/"+firstElement_tmp+aText.split(firstElement_tmp)[1]
+                                            if (include(p.name,text_fromFirst))
+                                            {
+                                                var highlightEdge = d3.select(this).select("polygon");
+                                                highlightEdge
+                                                    .style("stroke-width",5.)
+                                                    .style("stroke","#CC0000")
+                                                d3.selectAll(".treeFrame")
+                                                    .attr("fill-opacity", 0.5)
+                                                    .attr("stroke-opacity", 0.5);
+                                                d3.selectAll(".nodeText").style("fill-opacity",0.5);
+                                            }
+                                        })
+                                    }
+                                })
+                            }
+                        }
+                        
+                        //Unhighlight function again
+                        function unhighlight(data,aText)
+                        {
+                            aText = "/"+data.data.name+aText;
+                            if (data.parent){unhighlight(data.parent,aText)}
+                            else
+                            {
+                                scenarioKeys.forEach(function(k)
+                                {
+                                    var xdsm_tmp;
+                                    xdsm_tmp = xdsms[k];
+                                    if (xdsm_tmp)
+                                    {
+                                        xdsm_tmp.svg.selectAll(".edge").each(function(p) 
+                                        {
+                                            var firstElement_tmp = p.name.split("/")[1]
+                                            var text_fromFirst = "/"+firstElement_tmp+aText.split(firstElement_tmp)[1]
+                                            if (include(p.name,text_fromFirst))
+                                            {
+                                                var highlightEdge = d3.select(this).select("polygon");
+                                                highlightEdge
+                                                    .style("stroke-width",1.)
+                                                    .style("stroke","black");
+                                                d3.selectAll(".treeFrame")
+                                                    .attr("fill-opacity", 0.8)
+                                                    .attr("stroke-opacity", 0.8);
+                                                d3.selectAll(".nodeText").style("fill-opacity",1);
+                                            }
+                                        })
+                                    }
+                                })
+                            }
+                        }							
+                          
+                        
+                        function showVariableTable(aVariable)
+                        {						
+                            var headLine = "Node Information (" + aVariable.data.name + ")";
+                            var data = [];
+                            // render the table(s)
+                            data.push({ "name" : "Name", "value" : "\""+aVariable.data.name+"\"" })
+                            data.push({ "name" : "xPath", "value" : aVariable.data.xPath })
+                            if (aVariable.data.type){data.push({ "name" : "Type", "value" : aVariable.data.type })}
+                            if (aVariable.data.level){data.push({ "name" : "Level", "value" : aVariable.data.level })}
+                            if (aVariable.data.children){data.push({ "name" : "Number of children", "value" : aVariable.data.children.length })}
+                            if (aVariable.data.dimension){data.push({ "name" : "Dimension", "value" : aVariable.data.dimension })}
+                            else if(aVariable.data.dimension===null){data.push({ "name" : "Dimension", "value" : "undefined" })}
+                            if (aVariable.data.value){data.push({ "name" : "Value(s)", "value" : aVariable.data.value })}
+                            
+                            var d3_body = d3.select("body");
+                            
+                            var panel_div = d3_body.append("div").attr("class", "myPanel panel-default")
+                            panel_div.append("div").attr("class","panel-heading")
+                                .append("div").attr("class","panel_title").append("h4").text(headLine)
+                            var listGroup = panel_div.append("div").attr("class","panel-body")
+                                .append("table").attr("id","myTable")
+                                .append("tbody")
+                                
+                            data.forEach(function(listElement)
+                            {
+                                var row = listGroup.append("tr")
+                                row.append("td").text(listElement.name)
+                                row.append("td").text(listElement.value)
+                                
+                            })
+                            $('.myPanel').lobiPanel({
+                                reload: false,
+                                editTitle: false,
+                                expand: false,
+                                unpin: false,
+                                resize: "none",
+                                minWidth: 200,
+                                minHeight: 200,
+                                maxWidth: 1100,
+                                maxHeight: 1200,
+                            });
+                            $('.myPanel').lobiPanel('unpin');
+                        }
+                        
+                       
+                        function markVariable(aNode,variableData)
+                        {
+                            
+                            function getFullXPath(data,aText)
+                            {
+                                aText = "/"+data.data.name+aText;
+                                if (data.parent){return getFullXPath(data.parent,aText)}
+                                else{return aText}
+                            }
+                            var path="";
+                            var xPath = getFullXPath(aNode, path);
+                            d3.select('.d3-context-menu').style('display', 'none');                                
+                            
+                            var bootboxContent = {title: 'Marking variable as ' + variableData.variableType, message: '<p>Please be patient...</p>'};
+                            var xhr = $.ajax({
+                                type: 'POST',
+                                url: '/kadmosMarkVariable',
+                                    data: {
+                                    'graphID':graphID,
+                                    'sessionID': sessionID,
+                                    'xPath':xPath, 
+                                    'variableType':variableData.variableType,
+                                    'upperBound':variableData.upperBound,
+                                    'lowerBound':variableData.lowerBound,
+                                    'nominalValue':variableData.nominalValue,
+                                    'operator':variableData.operator,
+                                    'currentOrder':nodeOrder
+                                },
+                                success: function(result)
+                                {
+                                    if (result.includes("ERROR:"))
+                                    {
+                                        bootboxContent.message = result
+                                        kadmosErrorMessage(bootboxContent);
+                                    }
+                                    else
+                                    {
+                                        var updatedData = {};
+                                        updatedData = data;
+                                        var graphData = JSON.parse(result);             
+                                        for (var i = 0; i < updatedData.graphs.length; i++)
+                                        {
+                                            if (graphID == updatedData.graphs[i].id)
+                                            {
+                                                updatedData.graphs[i] = graphData.graphs[0];   
+                                            }
+                                        }
+                                                                                    
+                                        clearView();
+                                        makeKadmosMenu(updatedData);
+                                        xdsm_script(updatedData,graphID);
+                                        
+                                        bootboxContent.message = "Success!"
+                                        kadmosSuccessMessage(bootboxContent)
+                                    }
+                                },
+                                error: function(result)
+                                {
+                                    bootboxContent.message = result
+                                    kadmosErrorMessage(bootboxContent);
+                                }
+                            });
+                            kadmosHavePatience(xhr, bootboxContent)
+                        }
+                        
+                        function unmarkVariable(aNode)
+                        {
+                            var firstFromSchema = currentGraph.variableSchemes["schema"].name
+                            function getFullXPath(data,aText)
+                            {
+                                aText = "/"+data.data.name+aText;
+                                if (data.parent){return getFullXPath(data.parent,aText)}
+                                else{return aText}
+                            }
+                            var path="";
+                            var xPath = getFullXPath(aNode, path);
+                            var xPath_split = xPath.split(firstFromSchema)[1]
+                            xPath = "/"+firstFromSchema+xPath_split;
+                            
+                            d3.select('.d3-context-menu').style('display', 'none');                                
+                            
+                            var bootboxContent = {title: 'Unmarking variable<p>Please be patient...</p>'};
+                            var xhr = $.ajax({
+                                type: 'POST',
+                                url: '/kadmosUnmarkVariable',
+                                    data: {
+                                    'graphID':graphID, 
+                                    'xPath':xPath, 
+                                    'currentOrder':nodeOrder,
+                                    'sessionID': sessionID
+                                },
+                                success: function(result)
+                                {
+                                    if (result.includes("ERROR:"))
+                                    {
+                                        bootboxContent.message = result
+                                        kadmosErrorMessage(bootboxContent);
+                                    }
+                                    else
+                                    {
+                                        var updatedData = {};
+                                        updatedData = data;
+                                        var graphData = JSON.parse(result);             
+                                        for (var i = 0; i < updatedData.graphs.length; i++)
+                                        {
+                                            if (graphID == updatedData.graphs[i].id)
+                                            {
+                                                updatedData.graphs[i] = graphData.graphs[0];   
+                                            }
+                                        }
+                                                                                    
+                                        clearView();
+                                        makeKadmosMenu(updatedData);
+                                        xdsm_script(updatedData,graphID);
+                                        
+                                        bootboxContent.message = "Success!"
+                                        kadmosSuccessMessage(bootboxContent)
+                                    }
+                                },
+                                error: function(result)
+                                {
+                                    bootboxContent.message = result
+                                    kadmosErrorMessage(bootboxContent);
+                                }
+                            });
+                            kadmosHavePatience(xhr, bootboxContent)
+                        }
+                        
+                        //aigner: Marking variables as ... in KADMOS
+                        var markingOptions = [
+                            {  
+                                title: 'design variable',
+                                onMouseClick: function(elm, d, i) {
+                                    var theVariableData = {};
+                                    theVariableData.variableType = "designVariable";
+                                    theVariableData.operator = "";
+                                    theVariableData.upperBound = 0.;
+                                    theVariableData.lowerBound = 0.;
+                                    theVariableData.nominalValue = 0.;
+                                    
+                                    bootbox.hideAll();
+                                    bootbox.confirm({
+                                    title: 'Marking variable as ' + theVariableData.variableType,
+                                    message:"<form id='infos' action=''>"
+                                            +"\Nominal Value: <input type='text' id='nominalValue' name='nominalValue' /><br/>"
+                                            +"\Upper Bound:   <input type='text' id='upperBound' name='upperBound' /><br/>"
+                                            +"\Lower Bound:   <input type='text' id='lowerBound' name='lowerBound' />\</form>", 
+                                    callback: function(result){
+                                            if(result){
+                                                theVariableData.nominalValue = $('#nominalValue').submit()[0].value;
+                                                theVariableData.upperBound = $('#upperBound').submit()[0].value;
+                                                theVariableData.lowerBound = $('#lowerBound').submit()[0].value;
+                                                markVariable(elm.__data__, theVariableData);
+                                            }
+                                        }
+                                    });
+                                },
+                                onMouseOver: function(elm,d,i){}
+                            },
+                            {  
+                                title: 'objective',
+                                onMouseClick: function(elm, d, i) {
+                                    var theVariableData = {};
+                                    theVariableData.variableType = "objective";
+                                    theVariableData.operator = "";
+                                    theVariableData.upperBound = 0.;
+                                    theVariableData.lowerBound = 0.;
+                                    theVariableData.nominalValue = 0.;
+                                    markVariable(elm.__data__, theVariableData);
+                                },
+                                onMouseOver: function(elm,d,i){}
+                            },
+                            {  
+                                title: 'constraint',
+                                onMouseClick: function(elm, d, i) {
+                                    var theVariableData = {};
+                                    theVariableData.variableType = "constraint";
+                                    theVariableData.operator = "";
+                                    theVariableData.upperBound = 0.;
+                                    theVariableData.lowerBound = 0.;
+                                    theVariableData.nominalValue = 0.;
+                                    
+                                    bootbox.hideAll();
+                                    bootbox.confirm({
+                                    title: 'Marking variable as ' + theVariableData.variableType,
+                                    message:"<form id='infos' action=''>"
+                                            +"\Nominal Value: <input type='text' id='nominalValue' name='nominalValue' /><br/>"
+                                            +"\Mathematical operator (<, <=, = ,>=, >):   <input type='text' id='operator' name='operator' />\</form>", 
+                                    callback: function(result){
+                                            if(result){
+                                                theVariableData.nominalValue = $('#nominalValue').submit()[0].value;
+                                                theVariableData.operator = $('#operator').submit()[0].value;
+                                                markVariable(elm.__data__, theVariableData);
+                                            }
+                                        }
+                                    });
+                                },
+                                onMouseOver: function(elm,d,i){}
+                            },
+                            {  
+                                title: 'quantity of interest',
+                                onMouseClick: function(elm, d, i) {
+                                    var theVariableData = {};
+                                    theVariableData.variableType = "quantityOfInterest";
+                                    theVariableData.operator = "";
+                                    theVariableData.upperBound = 0.;
+                                    theVariableData.lowerBound = 0.;
+                                    theVariableData.nominalValue = 0.;
+                                    markVariable(elm.__data__, theVariableData);
+                                },
+                                onMouseOver: function(elm,d,i){}
+                            },
+                        ];
+                        
+                       
+                        //menu --> functions for right click options
+                        var nodeMenu = [
+                        {
+                            title: 'Show node information',
+                            onMouseDown: function(elm, d, i) {
+                                showVariableTable(d);
+                            },
+                            onMouseUp: function(elm, d, i) {},
+                            onMouseOver: function(elm, d, i) {},
+                            childrenItems: []
+                        },
+                        {
+                            title: 'Show usage of node in XDSM',
+                            onMouseDown: function(elm, d, i) {
+                                var theText="";
+                                highlight(d,theText);
+                            },
+                            onMouseUp: function(elm, d, i) {
+                                var theText="";
+                                unhighlight(d,theText);
+                            },
+                            onMouseOver: function(elm, d, i) {
+                            },
+                            childrenItems: []
+                        },
+                        {
+                            title: 'Copy x-path to clipboard',
+                            onMouseDown: function(elm, d, i) {
+                                function copyToClipboard(text) 
+                                {
+                                    window.prompt("Copy to clipboard: Ctrl+C, Enter", text);
+                                }
+                                function copyXPathToClipboard(data,aText)
+                                {
+                                    aText = "/"+data.data.name+aText;
+                                    if (data.parent){copyXPathToClipboard(data.parent,aText)}
+                                    else{copyToClipboard(aText);}
+                                }
+                                var copyText="";
+                                copyXPathToClipboard(d,copyText);
+                                d3.select('.d3-context-menu').style('display', 'none');
+                            },
+                            onMouseUp: function(elm, d, i) {
+                            },
+                            onMouseOver: function(elm, d, i) {
+                            },
+                            childrenItems: []
+                        },
+                        {
+                            title: 'Download full tree as XML-file',
+                            onMouseDown: function(elm, d, i) {
+                                //Begin xml structure with the first element
+                                var xmlString = "<"+nodes[0].data.name+">"+"</"+nodes[0].data.name+">";
+                                //Create a new xml document
+                                var parser = new DOMParser();
+                                var xmlDocument = parser.parseFromString(xmlString, "text/xml"); //important to use "text/xml"
+                                //Get initial xPath of the tree and pass it to the function "writeTreeToXML"
+                                var initialXPath = "/"+nodes[0].data.name;								
+                                writeTreeToXML(nodes[0],xmlDocument,initialXPath);
+                                //remove all attributes dummyID
+                                removeAttributeInAllElements(xmlDocument,'dummyID');
+                                //Make the xml document a string
+                                var serializer = new XMLSerializer();
+                                var xmlString = serializer.serializeToString(xmlDocument);
+                                xmlString = vkbeautify.xml(xmlString);														
+                                //Download a document with the xml-schema
+                                download(aName+'_full.xml',xmlString);						
+                            },
+                            onMouseUp: function(elm, d, i) {
+                            },
+                            onMouseOver: function(elm, d, i) {
+                            },
+                            childrenItems: []
+                        },
+                        {
+                            title: 'Download tree as XML-file from current node',
+                            onMouseDown: function(elm, d, i) {
+                                var xmlString = putAncestorsInXMLString({ val : '' }, d).val;
+                                var initialXPath = putAncestorsInXPath({ val : '' }, d).val;												
+                                //Create a new xml document
+                                var parser = new DOMParser();
+                                var xmlDocument = parser.parseFromString(xmlString, "text/xml"); //important to use "text/xml"
+                                //Get initial xPath of the tree and pass it to the function "writeCurrentTreeToXML"
+                                writeTreeToXML(d,xmlDocument,initialXPath);
+                                //remove all attributes dummyID
+                                removeAttributeInAllElements(xmlDocument,'dummyID');
+                                //Make the xml document a string
+                                var serializer = new XMLSerializer();
+                                xmlString = serializer.serializeToString(xmlDocument);
+                                xmlString = vkbeautify.xml(xmlString);														
+                                //Download a document with the xml-schema
+                                download(aName+"_"+d.data.name+'.xml',xmlString);						
+                            },
+                            onMouseUp: function(elm, d, i) {
+                            },
+                            onMouseOver: function(elm, d, i) {
+                            },
+                            childrenItems: []
+                        },
+                        { 
+                            title: 'Mark variable',
+                            onMouseDown: function(elm, d, i) {},
+                            onMouseUp: function(elm, d, i) {},
+                            onMouseOver: function(elm, d, i) {},
+                            childrenItems: markingOptions
+                        },
+                        { 
+                            title: 'Unmark variable',
+                           onMouseDown: function(elm, d, i) {
+                                bootbox.hideAll();
+                                bootbox.confirm("Are you sure you want to do this?", function(sure)
+                                {
+                                    if (sure)
+                                    {unmarkVariable(elm.__data__)}
+                                })
+                            },
+                            onMouseUp: function(elm, d, i) {},
+                            onMouseOver: function(elm, d, i) {},
+                            childrenItems: []
+                        }
+                        ]
+                        
+                       
+                        
+                        
+                        //Function writeTreeToXML goes through tree nodes and puts the into an xml document
+                        function writeTreeToXML(aNode,anXMLDoc,anXPath)
+                        {
+                            //Variable "children" 
+                            //--> One children variable, no matter whether a node has "_children" (collapsed) or "children" (expanded)
+                            var children;
+                            if (aNode._children){children = aNode._children;}
+                            else if (aNode.children){children = aNode.children;}
+                            
+                            //Get current xml element with its xPath
+                            var element = anXMLDoc.evaluate(anXPath,anXMLDoc, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null ).singleNodeValue;
+                            if (element != null) {element.value = '...';}
+                            
+                            //If a node has children (collapsed or expanded), loop through them
+                            if (children)
+                            {
+                                for (var i=0; i < children.length;i++)
+                                {
+                                    //Name of the new XML element --> childName
+                                    var child = children[i];
+                                    var childName = child.data.name.split(/[\[\]]+/);//Split childName at "[]" which is the uID 
+                                    var cleanChildName = childName[0].split(/[\+\*\^\-\ \#]+/);//Split childName all special characters
+                                    var newNode = anXMLDoc.createElement(String(cleanChildName[0]));
+                                    
+                                    //The children are appended to the xPath --> newXPath
+                                    var newXPath = anXPath+"/"+cleanChildName[0];
+                                    
+                                    //If childName contains a uID, make the uID an attribute
+                                    if (childName[1])
+                                    {
+                                        if (parseInt(childName[1]))
+                                        {
+                                            var dummyID = childName[1];
+                                            newNode.setAttribute("dummyID", dummyID)
+                                            newXPath = newXPath+"[@dummyID='"+dummyID+"']";
+                                        }
+                                        else
+                                        {
+                                            var uID = childName[1];
+                                            newNode.setAttribute("uID", uID)
+                                            newXPath = newXPath+"[@uID='"+uID+"']";
+                                        }
+                                    }
+                                    if (cleanChildName.length>1) {newNode.setAttribute("elementName", childName[0])};
+                                    
+                                    //Append the newNode to the xml structure
+                                    element.appendChild(newNode);
+                                    
+                                    
+                                    
+                                    ////aigner: Sorting of XML elements according to "uID"
+                                    // var items = element.children;
+                                    // var itemsArr = [];
+                                    // for (var j in items) {
+                                        // if (items[j].nodeType == 1) { // get rid of the whitespace text nodes
+                                            // itemsArr.push(items[j]);
+                                        // }
+                                    // }
+                                    // itemsArr.sort(function(a,b){
+                                        // if (a.getAttribute("uID") < b.getAttribute("uID"))
+                                            // return -1;
+                                        // if (a.getAttribute("uID") > b.getAttribute("uID"))
+                                            // return 1;
+                                        // return 0;
+                                        // });
+
+                                    // for (j = 0; j < itemsArr.length; ++j) {
+                                      // element.appendChild(itemsArr[j]);
+                                    // }
+                                    
+                                    //call function writeTreeToXML recursively for all children
+                                    writeTreeToXML(child,anXMLDoc,newXPath)
+                                }
+                            }
+                            else
+                            {
+                                if (aNode.data.value){element.innerHTML = String(aNode.data.value);}
+                                else{element.innerHTML = " ";}
+                            }
+                            //return the xml document
+                            return anXMLDoc;
+                        }
+                        
+                        function removeAttributeInAllElements(aDocument,attribute)
+                        {
+                          var matchingElements = [];
+                          var allElements = aDocument.getElementsByTagName('*');
+                          for (var i = 0, n = allElements.length; i < n; i++)
+                          {
+                            if (allElements[i].getAttribute(attribute) !== null)
+                            {
+                                allElements[i].removeAttribute(attribute);
+                            }
+                          }
+                          return matchingElements;
+                        }
+                        
+                        function putAncestorsInXMLString(strWrapper, aNode)
+                        {
+                            //Name of the new XML element
+                            var nodeName = aNode.data.name.split(/[\[\]]+/);//Split name at "[]" which is the uID 
+                            var cleanNodeName = nodeName[0].split(/[\+\*\^\-\ \#]+/);//Split nodeName all special characters
+                            //If nodeName contains a uID, make the uID an attribute
+                            if (nodeName[1])
+                            {
+                                var uID = nodeName[1];
+                                strWrapper.val = "<"+cleanNodeName[0]+" uID='"+ uID +"'>"+strWrapper.val+"</"+cleanNodeName[0]+">";;
+                            }
+                            else
+                            {
+                                strWrapper.val = "<"+cleanNodeName[0]+">"+strWrapper.val+"</"+cleanNodeName[0]+">";;
+                            }
+                            var aParent = aNode.parent;
+                            if (aParent)
+                            {
+                                return putAncestorsInXMLString(strWrapper, aParent);
+                            }
+                            else 
+                            {
+                                return strWrapper;
+                            }
+                        }
+                        
+                        function putAncestorsInXPath(strWrapper, aNode)
+                        {
+                            //Name of the new XML element
+                            var nodeName = aNode.data.name.split(/[\[\]]+/);//Split name at "[]" which is the uID 
+                            var cleanNodeName = nodeName[0].split(/[\+\*\^\-\ \#]+/);//Split nodeName all special characters
+                            //If nodeName contains a uID, make the uID an attribute
+                            if (nodeName[1])
+                            {
+                                var uID = nodeName[1];
+                                strWrapper.val = "/"+cleanNodeName[0]+"[@uID='"+uID+"']"+strWrapper.val;
+                            }
+                            else
+                            {
+                                strWrapper.val = "/"+cleanNodeName[0]+strWrapper.val;
+                            }
+                            var aParent = aNode.parent;
+                            if (aParent)
+                            {
+                                return putAncestorsInXPath(strWrapper, aParent);
+                            }
+                            else 
+                            {
+                                return strWrapper;
+                            }
+                        }
+                          
+                        nodeEnter = nodeEnter
+                        .on('contextmenu', d3.contextMenu(nodeMenu));                          
+                        
+                        
+                        nodeEnter.append("svg:title").text("Click left to expand, click right to inspect")
+                        
+                        
+
+                        // UPDATE
+                        var nodeUpdate = nodeEnter.merge(node);
+
+                        // Transition to the proper position for the node
+                        nodeUpdate.transition()
+                        .duration(duration)
+                        .attr("transform", function(d) { 
+                            return "translate(" + d.y + "," + d.x + ")";
+                         });
+
+                        // Update the node attributes and style
+                        nodeUpdate.select('circle.treeNode')
+                        .attr('r', 4.5)
+                        .style("fill", function(d) {
+                                if (d._children)
+                                {
+                                    if(aName.includes("Input")){return '#ea9999'}
+                                    else if(aName.includes("Output")){return '#d6ea99'}
+                                    else {return "lightsteelblue"}
+                                }
+                                else {return "#fff"}
+                          })
+                        .attr('cursor', 'pointer');
+                        
+                        nodeUpdate.select('text')
+                        .text(function(d) { return d.data.text; });
+
+
+                        // Remove any exiting nodes
+                        var nodeExit = node.exit().transition()
+                          .duration(duration)
+                          .attr("transform", function(d) {
+                              return "translate(" + source.y + "," + source.x + ")";
+                          })
+                          .remove();
+
+                        // ****************** links section ***************************
+
+                        // Update the links...
+                        var link = svgGroup.selectAll('path.treeLink')
+                          .data(links, function(d) { return d.id; });
+
+                        // Enter any new links at the parent's previous position.
+                        var linkEnter = link.enter().insert('path', "g")
+                          .attr("class", "treeLink")
+                          .attr('d', function(d){
+                            var o = {x: source.x0, y: source.y0}
+                            return diagonal(o, o)
+                          });
+
+                        // UPDATE
+                        var linkUpdate = linkEnter.merge(link);
+
+                        // Transition back to the parent element position
+                        linkUpdate.transition()
+                          .duration(duration)
+                          .attr('d', function(d){ return diagonal(d, d.parent) });
+
+                        // Remove any exiting links
+                        var linkExit = link.exit().transition()
+                          .duration(duration)
+                          .attr('d', function(d) {
+                            var o = {x: source.x, y: source.y}
+                            return diagonal(o, o)
+                          })
+                          .remove();
+
+                        // Store the old positions for transition.
+                        nodes.forEach(function(d){
+                        d.x0 = d.x;
+                        d.y0 = d.y;
+                        });
+
+                        // Creates a curved (diagonal) path from parent to the child nodes
+                        function diagonal(s, d) {
+                        return "M" + s.y + "," + s.x
+                              + "C" + (s.y + d.y) / 2 + "," + s.x
+                              + " " + (s.y + d.y) / 2 + "," + d.x
+                              + " " + d.y + "," + d.x;
+                        }
+                    }
+				}
+			}
+			startXDSM(data,graphID);
+
+			////aigner: Unused funcktions --> Could be helpful at some point
+			////aigner: clone function, so that original object is not overwritten but deep copied
+			// function clone(obj) {
+				// if (null == obj || "object" != typeof obj) return obj;
+				// var copy = obj.constructor();
+				// for (var attr in obj) {
+					// if (obj.hasOwnProperty(attr)) copy[attr] = obj[attr];
+				// }
+				// return copy;
+			// }
+			////aigner: cleanArray Function
+			// function cleanArray(actual) 
+			// {
+				// var newArray = new Array();
+				// for (var i = 0; i < actual.length; i++) 
+				// {
+					// if (actual[i]) 
+					// {
+						// newArray.push(actual[i]);
+					// }
+				// }
+				// return newArray;
+			// }
+			//#####################################################################//
+
+
+			},{"./src/animation":2,"./src/graph":3,"./src/xdsm":5,"d3":1}]},{},[6]);
+		}
+		
+		function edgeBundles_script(data,graphID)
+		{
+			
+			(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
+			!function(){function n(n){return n&&(n.ownerDocument||n.document||n).documentElement}function t(n){return n&&(n.ownerDocument&&n.ownerDocument.defaultView||n.document&&n||n.defaultView)}function e(n,t){return t>n?-1:n>t?1:n>=t?0:NaN}function r(n){return null===n?NaN:+n}function i(n){return!isNaN(n)}function u(n){return{left:function(t,e,r,i){for(arguments.length<3&&(r=0),arguments.length<4&&(i=t.length);i>r;){var u=r+i>>>1;n(t[u],e)<0?r=u+1:i=u}return r},right:function(t,e,r,i){for(arguments.length<3&&(r=0),arguments.length<4&&(i=t.length);i>r;){var u=r+i>>>1;n(t[u],e)>0?i=u:r=u+1}return r}}}function o(n){return n.length}function a(n){for(var t=1;n*t%1;)t*=10;return t}function l(n,t){for(var e in t)Object.defineProperty(n.prototype,e,{value:t[e],enumerable:!1})}function c(){this._=Object.create(null)}function f(n){return(n+="")===bo||n[0]===_o?_o+n:n}function s(n){return(n+="")[0]===_o?n.slice(1):n}function h(n){return f(n)in this._}function p(n){return(n=f(n))in this._&&delete 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a=t.selectAll(".resize").data(v,m);a.exit().remove(),a.enter().append("g").attr("class",function(n){return"resize "+n}).style("cursor",function(n){return $l[n]}).append("rect").attr("x",function(n){return/[ew]$/.test(n)?-3:null}).attr("y",function(n){return/^[ns]/.test(n)?-3:null}).attr("width",6).attr("height",6).style("visibility","hidden"),a.style("display",n.empty()?"none":null);var l,s=ao.transition(t),h=ao.transition(o);c&&(l=Zi(c),h.attr("x",l[0]).attr("width",l[1]-l[0]),r(s)),f&&(l=Zi(f),h.attr("y",l[0]).attr("height",l[1]-l[0]),i(s)),e(s)})}function e(n){n.selectAll(".resize").attr("transform",function(n){return"translate("+s[+/e$/.test(n)]+","+h[+/^s/.test(n)]+")"})}function r(n){n.select(".extent").attr("x",s[0]),n.selectAll(".extent,.n>rect,.s>rect").attr("width",s[1]-s[0])}function i(n){n.select(".extent").attr("y",h[0]),n.selectAll(".extent,.e>rect,.w>rect").attr("height",h[1]-h[0])}function u(){function u(){32==ao.event.keyCode&&(C||(M=null,L[0]-=s[1],L[1]-=h[1],C=2),S())}function v(){32==ao.event.keyCode&&2==C&&(L[0]+=s[1],L[1]+=h[1],C=0,S())}function d(){var n=ao.mouse(b),t=!1;x&&(n[0]+=x[0],n[1]+=x[1]),C||(ao.event.altKey?(M||(M=[(s[0]+s[1])/2,(h[0]+h[1])/2]),L[0]=s[+(n[0]<M[0])],L[1]=h[+(n[1]<M[1])]):M=null),E&&y(n,c,0)&&(r(k),t=!0),A&&y(n,f,1)&&(i(k),t=!0),t&&(e(k),w({type:"brush",mode:C?"move":"resize"}))}function y(n,t,e){var r,i,u=Zi(t),l=u[0],c=u[1],f=L[e],v=e?h:s,d=v[1]-v[0];return C&&(l-=f,c-=d+f),r=(e?g:p)?Math.max(l,Math.min(c,n[e])):n[e],C?i=(r+=f)+d:(M&&(f=Math.max(l,Math.min(c,2*M[e]-r))),r>f?(i=r,r=f):i=f),v[0]!=r||v[1]!=i?(e?a=null:o=null,v[0]=r,v[1]=i,!0):void 0}function m(){d(),k.style("pointer-events","all").selectAll(".resize").style("display",n.empty()?"none":null),ao.select("body").style("cursor",null),q.on("mousemove.brush",null).on("mouseup.brush",null).on("touchmove.brush",null).on("touchend.brush",null).on("keydown.brush",null).on("keyup.brush",null),z(),w({type:"brushend"})}var M,x,b=this,_=ao.select(ao.event.target),w=l.of(b,arguments),k=ao.select(b),N=_.datum(),E=!/^(n|s)$/.test(N)&&c,A=!/^(e|w)$/.test(N)&&f,C=_.classed("extent"),z=W(b),L=ao.mouse(b),q=ao.select(t(b)).on("keydown.brush",u).on("keyup.brush",v);if(ao.event.changedTouches?q.on("touchmove.brush",d).on("touchend.brush",m):q.on("mousemove.brush",d).on("mouseup.brush",m),k.interrupt().selectAll("*").interrupt(),C)L[0]=s[0]-L[0],L[1]=h[0]-L[1];else if(N){var T=+/w$/.test(N),R=+/^n/.test(N);x=[s[1-T]-L[0],h[1-R]-L[1]],L[0]=s[T],L[1]=h[R]}else ao.event.altKey&&(M=L.slice());k.style("pointer-events","none").selectAll(".resize").style("display",null),ao.select("body").style("cursor",_.style("cursor")),w({type:"brushstart"}),d()}var o,a,l=N(n,"brushstart","brush","brushend"),c=null,f=null,s=[0,0],h=[0,0],p=!0,g=!0,v=Bl[0];return n.event=function(n){n.each(function(){var n=l.of(this,arguments),t={x:s,y:h,i:o,j:a},e=this.__chart__||t;this.__chart__=t,Hl?ao.select(this).transition().each("start.brush",function(){o=e.i,a=e.j,s=e.x,h=e.y,n({type:"brushstart"})}).tween("brush:brush",function(){var e=xr(s,t.x),r=xr(h,t.y);return o=a=null,function(i){s=t.x=e(i),h=t.y=r(i),n({type:"brush",mode:"resize"})}}).each("end.brush",function(){o=t.i,a=t.j,n({type:"brush",mode:"resize"}),n({type:"brushend"})}):(n({type:"brushstart"}),n({type:"brush",mode:"resize"}),n({type:"brushend"}))})},n.x=function(t){return arguments.length?(c=t,v=Bl[!c<<1|!f],n):c},n.y=function(t){return arguments.length?(f=t,v=Bl[!c<<1|!f],n):f},n.clamp=function(t){return arguments.length?(c&&f?(p=!!t[0],g=!!t[1]):c?p=!!t:f&&(g=!!t),n):c&&f?[p,g]:c?p:f?g:null},n.extent=function(t){var e,r,i,u,l;return arguments.length?(c&&(e=t[0],r=t[1],f&&(e=e[0],r=r[0]),o=[e,r],c.invert&&(e=c(e),r=c(r)),e>r&&(l=e,e=r,r=l),e==s[0]&&r==s[1]||(s=[e,r])),f&&(i=t[0],u=t[1],c&&(i=i[1],u=u[1]),a=[i,u],f.invert&&(i=f(i),u=f(u)),i>u&&(l=i,i=u,u=l),i==h[0]&&u==h[1]||(h=[i,u])),n):(c&&(o?(e=o[0],r=o[1]):(e=s[0],r=s[1],c.invert&&(e=c.invert(e),r=c.invert(r)),e>r&&(l=e,e=r,r=l))),f&&(a?(i=a[0],u=a[1]):(i=h[0],u=h[1],f.invert&&(i=f.invert(i),u=f.invert(u)),i>u&&(l=i,i=u,u=l))),c&&f?[[e,i],[r,u]]:c?[e,r]:f&&[i,u])},n.clear=function(){return n.empty()||(s=[0,0],h=[0,0],o=a=null),n},n.empty=function(){return!!c&&s[0]==s[1]||!!f&&h[0]==h[1]},ao.rebind(n,l,"on")};var $l={n:"ns-resize",e:"ew-resize",s:"ns-resize",w:"ew-resize",nw:"nwse-resize",ne:"nesw-resize",se:"nwse-resize",sw:"nesw-resize"},Bl=[["n","e","s","w","nw","ne","se","sw"],["e","w"],["n","s"],[]],Wl=ga.format=xa.timeFormat,Jl=Wl.utc,Gl=Jl("%Y-%m-%dT%H:%M:%S.%LZ");Wl.iso=Date.prototype.toISOString&&+new Date("2000-01-01T00:00:00.000Z")?eo:Gl,eo.parse=function(n){var t=new Date(n);return isNaN(t)?null:t},eo.toString=Gl.toString,ga.second=On(function(n){return new va(1e3*Math.floor(n/1e3))},function(n,t){n.setTime(n.getTime()+1e3*Math.floor(t))},function(n){return n.getSeconds()}),ga.seconds=ga.second.range,ga.seconds.utc=ga.second.utc.range,ga.minute=On(function(n){return new va(6e4*Math.floor(n/6e4))},function(n,t){n.setTime(n.getTime()+6e4*Math.floor(t))},function(n){return n.getMinutes()}),ga.minutes=ga.minute.range,ga.minutes.utc=ga.minute.utc.range,ga.hour=On(function(n){var t=n.getTimezoneOffset()/60;return new va(36e5*(Math.floor(n/36e5-t)+t))},function(n,t){n.setTime(n.getTime()+36e5*Math.floor(t))},function(n){return n.getHours()}),ga.hours=ga.hour.range,ga.hours.utc=ga.hour.utc.range,ga.month=On(function(n){return n=ga.day(n),n.setDate(1),n},function(n,t){n.setMonth(n.getMonth()+t)},function(n){return n.getMonth()}),ga.months=ga.month.range,ga.months.utc=ga.month.utc.range;var Kl=[1e3,5e3,15e3,3e4,6e4,3e5,9e5,18e5,36e5,108e5,216e5,432e5,864e5,1728e5,6048e5,2592e6,7776e6,31536e6],Ql=[[ga.second,1],[ga.second,5],[ga.second,15],[ga.second,30],[ga.minute,1],[ga.minute,5],[ga.minute,15],[ga.minute,30],[ga.hour,1],[ga.hour,3],[ga.hour,6],[ga.hour,12],[ga.day,1],[ga.day,2],[ga.week,1],[ga.month,1],[ga.month,3],[ga.year,1]],nc=Wl.multi([[".%L",function(n){return n.getMilliseconds()}],[":%S",function(n){return n.getSeconds()}],["%I:%M",function(n){return n.getMinutes()}],["%I %p",function(n){return n.getHours()}],["%a %d",function(n){return n.getDay()&&1!=n.getDate()}],["%b %d",function(n){return 1!=n.getDate()}],["%B",function(n){return n.getMonth()}],["%Y",zt]]),tc={range:function(n,t,e){return ao.range(Math.ceil(n/e)*e,+t,e).map(io)},floor:m,ceil:m};Ql.year=ga.year,ga.scale=function(){return ro(ao.scale.linear(),Ql,nc)};var ec=Ql.map(function(n){return[n[0].utc,n[1]]}),rc=Jl.multi([[".%L",function(n){return n.getUTCMilliseconds()}],[":%S",function(n){return n.getUTCSeconds()}],["%I:%M",function(n){return n.getUTCMinutes()}],["%I %p",function(n){return n.getUTCHours()}],["%a %d",function(n){return n.getUTCDay()&&1!=n.getUTCDate()}],["%b %d",function(n){return 1!=n.getUTCDate()}],["%B",function(n){return n.getUTCMonth()}],["%Y",zt]]);ec.year=ga.year.utc,ga.scale.utc=function(){return ro(ao.scale.linear(),ec,rc)},ao.text=An(function(n){return n.responseText}),ao.json=function(n,t){return Cn(n,"application/json",uo,t)},ao.html=function(n,t){return Cn(n,"text/html",oo,t)},ao.xml=An(function(n){return n.responseXML}),"function"==typeof define&&define.amd?(this.d3=ao,define(ao)):"object"==typeof module&&module.exports?module.exports=ao:this.d3=ao}();},{}],
+			2:[function(require,module,exports){
+			"use strict";
+
+			var d3 = require('d3');
+
+			//aigner: functions for drawing expand- and collapse-symbols
+			function drawExpandSymbol(aCircle, line1, line2)
+			{        
+				 aCircle = aCircle
+					.attr("r", 10)
+					.style("stroke", "black")
+					.style("stroke-width", 2)
+					.style("fill", "#99CC00")
+					.style("fill-opacity", .6)
+				line1 = line1
+					.attr("x1", parseFloat(aCircle.attr("cx"))-5)
+					.attr("y1", parseFloat(aCircle.attr("cy")))
+					.attr("x2", parseFloat(aCircle.attr("cx"))+5)
+					.attr("y2", parseFloat(aCircle.attr("cy")))
+					.style("stroke", "black")
+					.style("stroke-width", 2);
+				line2 = line2
+					.attr("x1", parseFloat(aCircle.attr("cx")))
+					.attr("y1", parseFloat(aCircle.attr("cy"))-5)
+					.attr("x2", parseFloat(aCircle.attr("cx")))
+					.attr("y2", parseFloat(aCircle.attr("cy"))+5)
+					.style("stroke", "black")
+					.style("stroke-width", 2);
+			}
+			function drawRemoveSymbol(anXdsm, aCircle, aMinus)
+			{        
+				 var xOffset=150;
+				 var yOffset=12;
+				 aCircle = aCircle
+					.attr("cx", anXdsm.svg.attr("width")-xOffset)
+					.attr("cy", yOffset)
+					.attr("r", 10)
+					.classed("remCircle",true)
+				aMinus = aMinus
+					.attr("x1", anXdsm.svg.attr("width")-xOffset+5)
+					.attr("y1", yOffset)
+					.attr("x2", anXdsm.svg.attr("width")-xOffset-5)
+					.attr("y2", yOffset)
+					.classed("remMinus",true)
+			}
+			//d3-context-menu for right-click-option
+			d3.contextMenu = function (menu, openCallback) {
+
+				// create the div element that will hold the context menu
+				d3.selectAll('.d3-context-menu').data([1])
+					.enter()
+					.append('div')
+					.attr('class', 'd3-context-menu');
+
+				// close menu
+				d3.select('body').on('click.d3-context-menu', function() {
+					d3.select('.d3-context-menu').style('display', 'none');
+				});
+
+				// this gets executed when a contextmenu event occurs
+				return function(data, index) {	
+					var elm = this;
+
+					d3.selectAll('.d3-context-menu').html('');
+					var list = d3.selectAll('.d3-context-menu').append('ul');
+						list.selectAll('li').data(menu).enter()
+						.append('li')
+						.html(function(d) {
+							return d.title;
+						})
+						.on('mousedown', function(d, i) {
+							d.onMouseDown(elm, data, index);
+						})
+						.on('mouseup', function(d, i) {
+							d.onMouseUp(elm, data, index);
+							d3.select('.d3-context-menu').style('display', 'none');
+						})
+						.on('mouseenter',function(d,i){
+							d.onMouseOver(elm,data,index);
+							if(d.childrenItems.length>0 )
+								 {
+                                  var li = this
+								  d3.select(this).selectAll("ul").remove(); 
+								  d3.select(this)
+									.append("ul")
+                                    .style("top",String(li.offsetTop-5)+"px")
+									.selectAll("li")
+									   .data(d.childrenItems)
+										.enter().append("li")
+										  .text(function(d) { return d.title; })
+									 .on("mouseenter", function(d,i){
+											d.onMouseOver(elm,data,index);
+										})
+									 .on('click',  function(d, i) {
+											d.onMouseClick(elm, d, index);
+										})
+									 .on('mouseleave',function(d,i){
+										
+										});
+								 }
+							 else
+								 return false;
+						})
+						.on('mouseleave',function(d,i){
+							d3.select(this).selectAll("ul").style('display', 'none')                  
+						});
+					
+					  
+
+					// the openCallback allows an action to fire before the menu is displayed
+					// an example usage would be closing a tooltip
+					if (openCallback) openCallback(data, index);
+
+					// display context menu
+					d3.select('.d3-context-menu')
+						.style('left', (d3.event.pageX - 2) + 'px')
+						.style('top', (d3.event.pageY - 2) + 'px')
+						.style('display', 'block');
+                    
+                    //Prevent the default event, which is the left-click. 
+                    //This means, the context-menu will only appear on right mouse clicks
+					d3.event.preventDefault();
+                    
+                    //Place context-menu always on top of everything esle
+                    d3.select(".d3-context-menu").style("z-index",Number.MAX_SAFE_INTEGER);
+				};
+			};
+				
+			function tabulate(aTable,data,columns) {
+				var thead = aTable.append('thead');
+				var	tbody = aTable.append('tbody');  
+
+				// create a row for each object in the data
+				var rows = tbody.selectAll('tr')
+				  .data(data)
+				  .enter()
+				  .append('tr');
+
+				// create a cell in each row for each column
+				var cells = rows.selectAll('td')
+				  .data(function (row) {
+					return columns.map(function (column) {
+					  return {column: column, value: row[column]};
+					});
+				  })
+				  .enter()
+				  .append('td')
+					.html(function (d) { return d.value; });
+
+				return aTable;
+			}
+
+			//aigner: Move to front function
+			d3.selection.prototype.moveToFront = function() {  
+			  return this.each(function(){
+				this.parentNode.appendChild(this);
+			  });
+			};
+			//aigner: Move to back function
+			d3.selection.prototype.moveToBack = function() {  
+				return this.each(function() { 
+					var firstChild = this.parentNode.firstChild; 
+					if (firstChild) { 
+						this.parentNode.insertBefore(this, firstChild); 
+					} 
+				});
+			};
+
+
+			var diameter = 1500,
+				radius = diameter / 2,
+				innerRadius = radius - 250;
+
+			var cluster = d3.layout.cluster()
+				.size([360, innerRadius])
+				.sort(null)
+				.value(function(d) { return d.size; });
+
+			var bundle = d3.layout.bundle();
+
+			var line = d3.svg.line.radial()
+				.interpolate("bundle")
+				.tension(0.5)
+				.radius(function(d) { return d.y; })
+				.angle(function(d) { return d.x / 180 * Math.PI; });
+
+			var svg = d3.select("body").append("div").attr("class","edgeBundlesDiv")
+				svg = svg.append("svg")
+					.attr("class","circleSvg")
+					.attr("width", 10000)
+					.attr("height", 10000)
+					.append("g")
+					.attr("transform", "translate(" + radius*1.2 + "," + radius*1.2+ ")");
+				
+			var width = diameter*1.5;
+			var imgWidth = width;
+
+			var link = svg.append("g").selectAll(".edgeBundlesLink"),
+				invisibleLink = svg.append("g").selectAll(".invisibleLink"),
+				node = svg.append("g").selectAll(".edgeBundlesNode");
+			
+			//aigner: Here the data is read and the edge bundles is created
+			//################################################################################################//			
+			function startEdgeBundles(data, graphID) 
+			{
+				var graphs, currentGraph, varCategories, entireData;
+				
+				entireData = data;
+				graphs =  entireData.graphs;
+				for (var i=0;i<graphs.length;i++)
+				{
+					if (graphs[i].id==graphID)
+					{
+						currentGraph = graphs[i]
+					}
+				}
+				
+				varCategories =  entireData.categories;
+				var classes = currentGraph.edgeBundles;
+				
+				
+				//################################################################################################//	
+				var headerDiv =  d3.select(".edgeBundlesDiv").append("div").attr("class","panel panel-primary")
+				headerDiv.append("div").attr("class","panel-heading text-center")
+					.append("h3")
+					.attr("class","panel-title")
+					.style("font-family","Arial")
+					.style("font-size","20pt")
+					.text("Edge Bundles View")
+				var name_tmp="";
+				if (currentGraph.name){name_tmp=currentGraph.name}
+				else{name_tmp="Graph " + currentGraph.id}
+				headerDiv.append("div").attr("class","panel-body")
+					.style("font-family","Arial")
+					.style("font-size","16pt")
+					.text("Graph name: " + name_tmp)
+				headerDiv.append("div").attr("class","panel-body")
+					.style("font-family","Arial")
+					.style("font-size","16pt")
+					.text("Graph description: " + currentGraph.description)
+				//################################################################################################//	
+				
+				//aigner: Tree option menu to select which kind of tree view the user wants to see
+				//#####################################################################//
+				function showFullTree(categoryID, categoryDescr)
+				{
+					var name_tmp = "Full data model tree view; Categorization: " + categoryDescr;
+					var emptyArray="";
+					var allLinks = d3.selectAll(".edgeBundlesLink");
+					var theSchema = currentGraph.variableSchemes[categoryID];
+					createTreeLayout(name_tmp,theSchema,emptyArray,allLinks);
+				}
+				
+				var childrenItems = [];
+				for (var j=0; j< varCategories.length; j++)
+				{
+					childrenItems.push({title: 'according to ' + varCategories[j].description,
+								   varCategory: varCategories[j].name,
+								   description: varCategories[j].description,
+								   onMouseClick: function(elm, d, i) {showFullTree(d.varCategory,d.description)},
+								   onMouseOver: function(elm,d,i){}})
+				}
+				var treeOptionMenu = [
+				{
+					title: 'Show variable tree...',
+					onMouseDown: function(elm, d, i) {
+					},
+					onMouseUp: function(elm, d, i) {
+					},
+					onMouseOver: function(elm, d, i) {
+					},
+					childrenItems: childrenItems
+				}
+				]
+				//#####################################################################//
+				//aigner: treeLayout in the bottom
+				//################################################################################################//		
+				//aigner: Data Model Expand Button
+				//##########################################################
+				var dataModelDiv = d3.select(".edgeBundlesDiv").append("div").attr("class","dataModelDiv").attr("transform","translate(10,0)")
+					dataModelDiv.append("svg:title").text("Click right to inspect")
+				var ul = dataModelDiv.append("ul")
+				var dropdown1 = ul.append("li").on("mouseover", function(){d3.select(this).style("cursor", "default")})
+				dropdown1.append("img").attr("src",fileReference.AGILE_Icon)
+					.attr("align","left")
+					.style("margin-left","6px")
+					.style("margin-right","-10px")
+					.style("margin-top","10px")
+					.style("margin-bottom","0px")
+					.attr("height","20")
+					.attr("width","20")
+				dropdown1.append("a").text("Data Model")
+				var links = dropdown1.append("ul");
+				for (var j=0; j< varCategories.length; j++)
+				{
+					//console.log(varCategories[j])
+					var linkLi = links.append("li");
+					var linkA = linkLi.append("a")
+						.attr("id",j)
+						.text(varCategories[j].description)
+						.on("mouseover", function(){d3.select(this).style("cursor", "pointer")})
+						.on("click", function()
+						{		
+							showFullTree(varCategories[this.id].name,varCategories[this.id].description)
+						})
+					
+				}
+				//aigner: Set width of the div, so the VISTOMS dropdown (in the top of the page) still works
+				dataModelDiv.style("width", String(dropdown1.node().getBoundingClientRect().width+20)+"px")
+				//##########################################################
+				//################################################################################################//
+				
+				
+				//aigner: legend
+				//################################################################################################//
+				// var legendDiv = d3.select("body").append("div").attr("class","legendDiv");
+				// var legendSVG = legendDiv.append("svg").attr("width",1000).attr("height",200);
+				// var legend = legendSVG.append("g")
+					// .attr("class", "legend")
+					// .attr("transform", "translate(38,12)");
+				// var legendFrame = legend.append("rect")
+					// .attr("x",-28)
+					// .attr("height", 150)
+					// .attr("width", 400)
+					// .attr("fill", "none")
+					// .attr("stroke", "#8888")
+					// .attr("stroke-width", 3)
+				// legend.append("text")
+					// .attr("transform", "translate(-20,24)")
+					// .attr("font-family","Arial")
+					// .attr("font-size","16pt")
+					// .attr("font-weight",700)
+					// .attr("fill","black")
+					// .text("Legend")
+				// legend.append("line")
+					// .attr("x1", -20)
+					// .attr("y1", 50)
+					// .attr("x2", 20)
+					// .attr("y2", 50)
+					// .style("stroke", "#CC0000")
+					// .style("stroke-width", 5);
+				// legend.append("line")
+					// .attr("x1", -20)
+					// .attr("y1", 90)
+					// .attr("x2", 20)
+					// .attr("y2", 90)
+					// .style("stroke", "#99CC00")
+					// .style("stroke-width", 5);
+				// legend.append("text")
+					// .attr("transform", "translate(30,56)")
+					// .attr("font-family","Arial")
+					// .attr("font-size","12pt")
+					// .attr("fill","black")
+					// .text("Input")
+				// legend.append("text")
+					// .attr("transform", "translate(30,96)")
+					// .attr("font-family","Arial")
+					// .attr("font-size","12pt")
+					// .attr("fill","black")
+					// .text("Output")
+				
+				//################################################################################################//
+				
+				
+				//d3.select(".legendDiv").moveToBack()
+				d3.select(".dataModelDiv").moveToBack()
+				headerDiv.moveToBack()
+                d3.select(".addButtonDiv").moveToBack()
+				d3.select(".navigationBarDiv").moveToBack()
+				d3.select(".visPackDiv").moveToBack()
+				
+				
+				var nodes = cluster.nodes(packageHierarchy(classes));
+				var links = packageImports(nodes);
+				
+				links.forEach(function(d)
+				{
+					d.pipeData_in = d.source.pipeline_data[d.target.name];
+					d.pipeData_out = d.target.pipeline_data[d.source.name];
+					d.pipeDataName_in = "";
+					d.pipeDataName_out = "";
+					if (d.pipeData_in)
+					{
+						for (var i=0; i<d.pipeData_in.length; i++)
+						{
+							d.pipeDataName_in += "," + d.pipeData_in[i];
+						}
+					}
+					if (d.pipeData_out)
+					{
+						for (var i=0; i<d.pipeData_out.length; i++)
+						{
+							d.pipeDataName_out += "," + d.pipeData_out[i];
+						}
+
+					}
+				})
+					
+				link = link
+				  .data(bundle(links))
+				.enter().append("path")
+				  .each(function(d) { 
+					d.source = d[0];
+					d.target = d[d.length - 1];})
+				  .attr("class", "edgeBundlesLink")
+				  .attr("d", line)
+
+				
+				
+				invisibleLink = invisibleLink
+				  .data(bundle(links))
+					.enter().append("path")
+				  .each(function(d) { 
+					d.source = d[0];
+					d.target = d[d.length - 1];
+					d.createNew = true;})
+				  .attr("class", "invisibleLink")
+				  .attr("d", line)
+				  
+					
+				function showLinkTree(aLink,aVarCategory, aCategoryDescr)
+				{
+					var theSchema = currentGraph.variableSchemes[aVarCategory];
+					var name_tmp = "Variable flow: " + aLink.__data__.source.name +  "  →  " + aLink.__data__.target.name + "; Categorization: " + aCategoryDescr;
+					createTreeLayout(name_tmp,theSchema,aLink.__data__,link);
+				}
+				
+				function showEdgeTable(aLink)
+				{						
+					aLink.pipeData_in = aLink.source.pipeline_data[aLink.target.name];
+					aLink.pipeData_out = aLink.target.pipeline_data[aLink.source.name];
+					aLink.pipeDataName_in = "";
+					aLink.pipeDataName_out = "";
+					aLink.name = "";
+					if (aLink.pipeData_in)
+					{
+						for (var i=0; i<aLink.pipeData_in.length; i++)
+						{
+							if (i==0){aLink.pipeDataName_in += aLink.pipeData_in[i];}
+							else{aLink.pipeDataName_in += "," + aLink.pipeData_in[i];}
+							
+						}
+						aLink.name += aLink.pipeDataName_in
+					}
+					if (aLink.pipeData_out)
+					{
+						for (var i=0; i<aLink.pipeData_out.length; i++)
+						{
+							if (i==0){aLink.pipeDataName_out += aLink.pipeData_out[i];}
+							else{aLink.pipeDataName_out += "," + aLink.pipeData_out[i];}
+						}
+						aLink.name += aLink.pipeDataName_out
+					}
+                    
+                   
+					var headLine = "Edge Information (" + aLink.source.key + " - " + aLink.target.key + ")";					
+					var pipeData_in = aLink.pipeDataName_in;
+					var pipeData_out = aLink.pipeDataName_in;
+                    var theLeafNodes_in = JSON.parse(JSON.stringify(currentGraph.variableSchemes[varCategories[0].name]));
+                    var theLeafNodes_out = JSON.parse(JSON.stringify(currentGraph.variableSchemes[varCategories[0].name]));
+					prune_tree(pipeData_in,theLeafNodes_in)
+					prune_tree(pipeData_out,theLeafNodes_out)
+                    
+                    var nullDim_in=false;
+                    var dimension_in=0;
+                    var undefLeafsNumber_in=0;
+					var defLeafsNumber_in=0;
+                    var nullDim_out=false;
+                    var dimension_out=0;
+                    var undefLeafsNumber_out=0;
+					var defLeafsNumber_out=0;
+                    function getUndefinedLeafNodes(theLeafNodes,defLeafsNumber,undefLeafsNumber,dimenson,nullDim)
+                    {
+                        for (var k=0;k<theLeafNodes.length;k++)
+                        {
+                            if (theLeafNodes[k].dimension!=null){dimension = dimension+theLeafNodes[k].dimension}
+                            else{nullDim=true}
+                            if (theLeafNodes[k].value.includes("could not be found")||theLeafNodes[k].value.includes("unknown"))
+                            {
+                                undefLeafsNumber ++;
+                            }
+                            else
+                            {
+                                defLeafsNumber++;
+                            }
+                        }		
+                    }
+                    getUndefinedLeafNodes(theLeafNodes_in,defLeafsNumber_in,undefLeafsNumber_in,dimension_in,nullDim_in)
+                    getUndefinedLeafNodes(theLeafNodes_out,defLeafsNumber_out,undefLeafsNumber_out,dimension_out,nullDim_out)
+					//Render data for table
+					var data = [];
+					data.push({ "name" : "Total number of connections", "value" : aLink.pipeDataName_in.split(",").length+aLink.pipeDataName_out.split(",").length })
+					
+                    data.push({ "name" : "Total number of incoming connections", "value" : aLink.pipeDataName_in.split(",").length })
+                    data.push({ "name" : "Number of referenced incoming connections", "value" : defLeafsNumber_in })
+                    data.push({ "name" : "Dimension of referenced outgoing connections", "value" : String(dimension_in) })
+					if (undefLeafsNumber_in>0)
+					{
+						data.push({ "name" : "Number of unreferenced incoming connections", "value" :  undefLeafsNumber_in})					
+					}
+					
+                    data.push({ "name" : "Total number of outgoing connections", "value" : aLink.pipeDataName_out.split(",").length })
+					data.push({ "name" : "Number of referenced outgoing connections", "value" : defLeafsNumber_out })
+                    data.push({ "name" : "Dimension of referenced outgoing connections", "value" : String(dimension_out) })
+                    if (undefLeafsNumber_out>0)
+					{
+						data.push({ "name" : "Number of unreferenced incoming connections", "value" :  undefLeafsNumber_out})					
+					}
+					
+					
+                    var d3_body = d3.select("body");
+                    var panel_div = d3_body.append("div").attr("class", "myPanel panel-default")
+                    panel_div.append("div").attr("class","panel-heading")
+                        .append("div").attr("class","panel_title").append("h4").text(headLine)
+                    var listGroup = panel_div.append("div").attr("class","panel-body")
+                        .append("table").attr("id","myTable")
+                        .append("tbody")
+                        
+                    data.forEach(function(listElement)
+                    {
+                        var row = listGroup.append("tr")
+                        row.append("td").text(listElement.name)
+                        row.append("td").text(listElement.value)
+                        
+                    })
+                    $('.myPanel').lobiPanel({
+                        reload: false,
+                        editTitle: false,
+                        expand: false,
+                        unpin: false,
+                        resize: "none",
+                        minWidth: 200,
+                        minHeight: 200,
+                        maxWidth: 1100,
+                        maxHeight: 1200,
+                    });
+                    $('.myPanel').lobiPanel('unpin');
+				}
+				
+				//linkMenu --> functions for right click options
+				var linkChildrenItems = [];
+				for (var j=0; j< varCategories.length; j++)
+				{
+					linkChildrenItems.push({title: 'according to ' + varCategories[j].description,
+											varCategory: varCategories[j].name,
+											description: varCategories[j].description,
+											onMouseClick: function(elm, data, i) {showLinkTree(elm,data.varCategory,data.description)},
+											onMouseOver: function(elm,data,i){}});
+				}
+				var linkMenu = [
+				{
+					title: 'Show edge info',
+					onMouseDown: function(elm, k, i) {
+						showEdgeTable(k)
+					},
+					onMouseUp: function(elm, k, i) {
+					},
+					onMouseOver: function(elm, d, i) {
+					},
+					childrenItems: []
+				},
+				{
+					title: 'Show variable tree...',
+					onMouseDown: function(elm, k, i) {
+					},
+					onMouseUp: function(elm, k, i) {
+					},
+					onMouseOver: function(elm, d, i) {
+					},
+					childrenItems: linkChildrenItems
+				}
+				]  
+				invisibleLink.append("svg:title").text("Click right to inspect")
+				invisibleLink
+				.on("mouseover", function(){d3.select(this).style("cursor", "pointer")})
+				.on('contextmenu', d3.contextMenu(linkMenu));
+				
+				//aigner: CAUTION, HACK --> delete the obsolete object that contains duplicate information
+				nodes.forEach(function(aNode,i)
+				{
+					if (aNode.children)
+					{
+						var index = nodes.indexOf(aNode);
+						if (index > -1) 
+						{
+							nodes.splice(index, 1);
+						}
+					}
+				});
+				
+				//aigner: Create the nodes in a circular view
+				node = node
+				  .data(nodes)
+				.enter().append("text")
+				  .attr("class", "edgeBundlesNode")
+				  .attr("dy", ".31em")
+				  .attr("transform", function(d) { return "rotate(" + (d.x - 90) + ")translate(" + (d.y + 8) + ",0)" + (d.x < 180 ? "" : "rotate(180)"); })
+				  .style("text-anchor", function(d) { return d.x < 180 ? "start" : "end"; })
+				  .style("font-family","Arial")
+				  .style("font-size","16pt")
+				  .text(function(d) { return d.name; })
+				  .on("mouseover", nodeMouseovered)
+				  .on("mouseout", nodeMouseouted);
+				
+				//aigner: Right click options for tools
+				//##############################################################################################################################
+				//aigner: assign additional node information to nodes coming from xdsm information	
+				var theXDSM = currentGraph.xdsm;
+				nodes.forEach(function(aNode,i)
+				{
+					var xdsmNodes = theXDSM.nodes;
+					for (var i=0; i< xdsmNodes.length; i++)
+					{
+						var xdsmNode = xdsmNodes[i];
+						if (xdsmNode.name == aNode.name)
+						{
+							aNode.id = xdsmNode.id;
+							aNode.metadata = xdsmNode.metadata;
+							aNode.type = xdsmNode.type;
+						}
+					}
+				});		
+				
+				//aigner: Table for competence/tool information
+				//############################################################
+                function showToolTable(aTool)
+                {
+                    var aToolNameSplit = aTool.name.split(': ')			
+                    var headLine;
+                    if (aToolNameSplit.length>1){headLine = "Competence Information: (" + aToolNameSplit[1] + ")";}
+                    else {headLine = "Competence Information: (" + aToolNameSplit[0] + ")";}
+                    
+                    
+                    var data = [];
+                    // render the table(s)
+                    if (aTool.metadata.length==0)
+                    {
+                        data.push({ "name" : "NO TOOL METADATA AVAILABLE", "value" : "..." })
+                    }
+                    function findSubMetaData(aMetaData)
+                    {
+                        for(var key in aMetaData)
+                        {
+                            if (typeof aMetaData[key] === 'object')
+                            {
+                                data.push({ "name" : key, "value" : ''}) ;
+                                findSubMetaData(aMetaData[key]);
+                            }
+                            else
+                            {
+                                data.push({ "name" : key, "value" : aMetaData[key] })
+                            }
+                        }
+                    }
+                    for (var j=0; j < aTool.metadata.length;j++)
+                    {
+                        var metaData = aTool.metadata[j];
+                        findSubMetaData(metaData);						
+                    }
+                
+                    
+                    var d3_body = d3.select("body");
+                    
+                    var panel_div = d3_body.append("div").attr("class", "myPanel panel-default")
+                    panel_div.append("div").attr("class","panel-heading")
+                        .append("div").attr("class","panel_title").append("h4").text(headLine)
+                    var listGroup = panel_div.append("div").attr("class","panel-body")
+                        .append("table").attr("id","myTable")
+                        .append("tbody")
+                        
+                    data.forEach(function(listElement)
+                    {
+                        var row = listGroup.append("tr")
+                        row.append("td").text(listElement.name)
+                        row.append("td").text(listElement.value)
+                        
+                    })
+                    $('.myPanel').lobiPanel({
+                        reload: false,
+                        editTitle: false,
+                        expand: false,
+                        unpin: false,
+                        resize: "none",
+                        minWidth: 200,
+                        minHeight: 200,
+                        maxWidth: 1100,
+                        maxHeight: 1200,
+                    });
+                    $('.myPanel').lobiPanel('unpin');
+                }
+				//############################################################
+				
+				//aigner: Creation of input/output tree
+				//############################################################
+				function showIOTree(categoryName, categoryDescr, theNode, io)
+				{	
+					var links = d3.selectAll(".edgeBundlesLink")[0];
+					var array={name_in:"",name_out:"",name:""};
+					var name_tmp = "";
+								
+					links.forEach(function(d)
+					{	
+						var theLink = d.__data__;
+						
+						
+						var pipeData_in = theLink.source.pipeline_data[theLink.target.name];
+						var pipeData_out = theLink.target.pipeline_data[theLink.source.name];
+						if (!pipeData_in){pipeData_in = [];}
+						if (!pipeData_out){pipeData_out = [];}
+						theLink.pipeData_in = theLink.source.pipeline_data[theLink.target.name];
+						theLink.pipeData_out = theLink.target.pipeline_data[theLink.source.name];
+						theLink.name_in = "";
+						theLink.name_out = "";
+						theLink.name = "";
+						if (theLink.pipeData_in)
+						{
+							for (var i=0; i<theLink.pipeData_in.length; i++)
+							{
+								if (i==0){theLink.name_in += theLink.pipeData_in[i];}
+								else{theLink.name_in += "," + theLink.pipeData_in[i];}
+								
+							}
+							theLink.name += theLink.name_in
+						}
+						if (theLink.pipeData_out)
+						{
+							for (var i=0; i<theLink.pipeData_out.length; i++)
+							{
+								if (i==0){theLink.name_out += theLink.pipeData_out[i];}
+								else{theLink.name_out += "," + theLink.pipeData_out[i];}
+							}
+							theLink.name += theLink.name_out
+						}
+					
+						if (io=="in")
+						{
+							if (theLink.target == theNode)
+							{
+								if (array.name_in == ""){array.name_in +=theLink.name_out;}
+								else{array.name_in += "," + theLink.name_out;}
+								array.name_out = "";
+								array.name = array.name_in;
+							}
+							if (theLink.source == theNode)
+							{
+								if (array.name_in == ""){array.name_in +=theLink.name_in;}
+								else{array.name_in += "," + theLink.name_in;}
+								array.name_out = "";
+								array.name = array.name_in;
+							}
+							name_tmp = "Input tree view: " + theNode.id + "; Categorization: " + categoryDescr;
+						}
+						else if (io=="out")
+						{
+							if (theLink.source == theNode)
+							{
+								if (array.name_out == ""){array.name_out +=theLink.name_out;}
+								else{array.name_out += "," + theLink.name_out;}
+								array.name_in = "";
+								array.name = array.name_out;
+							}
+							if (theLink.target == theNode)
+							{
+								if (array.name_out == ""){array.name_out +=theLink.name_in;}
+								else{array.name_out += "," + theLink.name_in;}
+								array.name_in = "";
+								array.name = array.name_out;
+							}
+							name_tmp = "Output tree view: " + theNode.id + "; Categorization: " + categoryDescr;
+						}
+					})		
+					var theSchema = currentGraph.variableSchemes[categoryName]		
+					createTreeLayout(name_tmp,theSchema,array,link)
+				}
+				//############################################################
+				
+				var inputChildrenitems = [];
+				var outputChildrenitems = [];
+				var inputChildrenitems = [];
+				var outputChildrenitems = [];
+				for (var j=0; j< varCategories.length; j++)
+				{
+					inputChildrenitems.push({title: 'according to ' + varCategories[j].description,
+											 varCategory: varCategories[j].name,
+											 description: varCategories[j].description,
+											 onMouseClick: function(elm, data, i) {showIOTree(data.varCategory,data.description,elm.__data__,"in")},
+											 onMouseOver: function(elm,data,i){}});
+					outputChildrenitems.push({title: 'according to ' + varCategories[j].description,
+											 varCategory: varCategories[j].name,
+											 description: varCategories[j].description,
+											 onMouseClick: function(elm, data, i) {showIOTree(data.varCategory,data.description,elm.__data__,"out")},
+											 onMouseOver: function(elm,data,i){}});
+				}
+				//menu --> functions for right click options
+				var toolMenu = [
+				{
+					title: 'Show competence info',
+					onMouseDown: function(elm, k, i) {
+						showToolTable(k);
+					},
+					onMouseUp: function(elm, k, i) {
+					},
+					onMouseOver: function(elm, d, i) {
+					},
+					childrenItems: []
+				},
+				{
+					title: 'Show input variable tree...',
+					onMouseDown: function(elm, k, i) {
+					},
+					onMouseUp: function(elm, k, i) {
+					},
+					onMouseOver: function(elm, d, i) {
+					},
+					childrenItems: inputChildrenitems
+				},
+				{
+					title: 'Show output variable tree...',
+					onMouseDown: function(elm, k, i) {
+					},
+					onMouseUp: function(elm, k, i) {
+					},
+					onMouseOver: function(elm, d, i) {
+					},
+					childrenItems: outputChildrenitems
+				}
+				]
+				
+				node.on('contextmenu', d3.contextMenu(toolMenu));
+				//##############################################################################################################################
+			};
+			startEdgeBundles(data,graphID);
+
+			function nodeMouseovered(d) {
+				d3.select(this).append("svg:title").text("Click right to inspect");
+				d3.select(this).style("cursor", "pointer")
+			  node
+				  .each(function(n) { 
+				  n.target = n.source = false; });
+
+			  link
+				  .classed("edgeBundlesLink--target", function(l) { if (l.target === d) return l.source.source = true; })
+				  .classed("edgeBundlesLink--source", function(l) { if (l.source === d) return l.target.target = true; })
+				  .filter(function(l) { return l.target === d || l.source === d; })
+				  .each(function() { this.parentNode.appendChild(this); });
+				  
+			  node
+				  .classed("edgeBundlesNode--target", function(n) { return n.target; })
+				  .classed("edgeBundlesNode--source", function(n) { return n.source; })
+			}
+
+			function nodeMouseouted(d) {
+			  link
+				  .classed("edgeBundlesLink--target", false)
+				  .classed("edgeBundlesLink--source", false);
+
+			  node
+				  .classed("edgeBundlesNode--target", false)
+				  .classed("edgeBundlesNode--source", false);
+			}
+
+			d3.select(self.frameElement).style("height", diameter + "px");
+
+			// Lazily construct the package hierarchy from class names.
+			function packageHierarchy(classes) {
+			  var map = {};
+
+			  function find(name, data) {
+				var node = map[name], i;
+				if (!node) {
+				  node = map[name] = data || {name: name, children: []};
+				  if (name.length) {
+					node.parent = find(name.substring(0, i = name.lastIndexOf("/")));
+					node.parent.children.push(node);
+					node.key = name.substring(i + 1);
+				  }
+				}
+				return node;
+			  }
+
+			  classes.forEach(function(d) {
+				find(d.name, d);
+			  });
+
+			  return map[""];
+			}
+
+			// Return a list of imports for the given array of nodes.
+			function packageImports(nodes) {
+			  var map = {},
+			  map2 = {},
+			  input = [];
+
+			  // Compute a map from name to node.
+			  nodes.forEach(function(d) {
+				map[d.name] = d;
+				map2[d.pipeline_data] = d;
+			  });
+
+			  // For each import, construct a link from the source to target node.
+			  nodes.forEach(function(d) 
+			  {
+				if(d.input)
+				{
+					d.input.forEach(function(i) 
+					{
+						if (map[i])
+						{
+							input.push({source: map[d.name], 
+									target: map[i],
+									pipeline_data: map2[d.pipeline_data]});	
+						}
+					})
+				}
+
+			   });
+			  return input;
+			}
+
+			function include(arr,obj) {
+				return (arr.indexOf(obj) != -1);
+			}
+            
+            
+            
+			function createTreeLayout(theName, schema,aLink,theAllLinks)
+			{
+                //aigner: Build the tree layout
+                //######################################################################
+				var theLink = aLink;
+				if (aLink.source && aLink.target)
+				{
+					var pipeData_in = theLink.source.pipeline_data[theLink.target.name];
+					var pipeData_out = theLink.target.pipeline_data[theLink.source.name];
+					if (!pipeData_in){pipeData_in = [];}
+					if (!pipeData_out){pipeData_out = [];}
+					theLink.pipeData_in = theLink.source.pipeline_data[theLink.target.name];
+					theLink.pipeData_out = theLink.target.pipeline_data[theLink.source.name];
+					theLink.name_in = "";
+					theLink.name_out = "";
+					theLink.name = "";
+					if (theLink.pipeData_in)
+					{
+						for (var i=0; i<theLink.pipeData_in.length; i++)
+						{
+							if (i==0){theLink.name_in += theLink.pipeData_in[i];}
+							else{theLink.name_in += "," + theLink.pipeData_in[i];}
+							
+						}
+						theLink.name += theLink.name_in
+					}
+					if (theLink.pipeData_out)
+					{
+						for (var i=0; i<theLink.pipeData_out.length; i++)
+						{
+							if (i==0){theLink.name_out += theLink.pipeData_out[i];}
+							else{theLink.name_out += "," + theLink.pipeData_out[i];}
+						}
+						theLink.name += theLink.name_out
+					}
+				}
+                
+                var treeData_in = (JSON.parse(JSON.stringify(schema)));				
+                var treeData_out = (JSON.parse(JSON.stringify(schema)));				
+                //aigner: Here, the minimalized tree is created!                    
+                //The tree will only be pruned if there is pipeData, such as in an edge or for the input of a tool
+                if (theLink)
+                {
+                    if (theLink.name_in)
+                    {
+                        prune_tree(theLink.name_in, treeData_in, "in");
+                    }
+                    else{treeData_in=[]}
+                    if (theLink.name_out)
+                    {
+                        prune_tree(theLink.name_out, treeData_out, "out");
+                    }
+                    else{treeData_out=[]}
+                }
+                    
+                //build tree layout for vistoms
+                var treeData = treeData_in.concat(treeData_out)
+                var newTree = {};
+                buildTree(newTree, treeData)                    
+                treeData = newTree
+                //######################################################################
+                
+				var width= 1000;
+				var height= 500;
+				var xOffset = 10;
+				var xOffset2 = 100;
+				var canvas = d3.select(".circleSvg");
+				// Calculate total nodes, max label length
+				var totalNodes = 0;
+				var maxLabelLength = 0;
+				// variables for drag/drop
+				var selectedNode = null;
+				var draggingNode = null;
+				// Misc. variables
+				var i = 0;
+				var duration = 500;
+				var root;
+				
+
+				// size of the diagram
+				var viewerWidth = width/3;
+				var viewerHeight = height-50;
+
+				var tree = d3.layout.tree()
+					.size([viewerHeight, viewerWidth])
+
+				// define a d3 diagonal projection for use by the node paths later on.
+				var diagonal = d3.svg.diagonal()
+					.projection(function(d) {
+						return [d.y+xOffset, d.x];
+					});
+
+				// A recursive helper function for performing some setup by walking through all nodes
+
+				function visit(parent, visitFn, childrenFn) {
+					if (!parent) return;
+
+					visitFn(parent);
+
+					var children = childrenFn(parent);
+					if (children) {
+						var count = children.length;
+						for (var i = 0; i < count; i++) {
+							visit(children[i], visitFn, childrenFn);
+						}
+					}
+				}
+
+				// Call visit function to establish maxLabelLength
+				visit(treeData, function(d) {
+					totalNodes++;
+					maxLabelLength = Math.max(d.name.length, maxLabelLength);
+				}, function(d) {
+					return d.children && d.children.length > 0 ? d.children : null;
+				});
+				
+				function getMaxLength(data)
+				{
+					var maxLen=0;;
+					for (var i = 0; i < data.length; i++)
+					{
+						maxLen = Math.max(data[i].name.length, maxLen);
+					}
+					for (var i = 0; i < data.length; i++)
+					{
+						data[i].labelLength = maxLen;
+						if (data[i].children)
+						{getMaxLength(data[i].children);}
+						if (data[i]._children)
+						{getMaxLength(data[i]._children);}
+					}
+					
+				}
+				if(treeData._children)
+				{getMaxLength(treeData._children);}
+				if(treeData.children)
+				{getMaxLength(treeData.children);}
+				treeData.labelLength = treeData.name.length;
+
+				// sort the tree according to the node names
+				function sortTree() {
+					tree.sort(function(a, b) {
+						return b.name.toLowerCase() < a.name.toLowerCase() ? 1 : -1;
+					});
+				}
+				// Sort the tree initially incase the JSON isn't in a sorted order.
+				//sortTree()
+
+
+				// Collapse the node and all it's children
+				function collapse(d) {
+				  if(d.children) {
+					d._children = d.children
+					d._children.forEach(collapse)
+					d.children = null
+				  }
+				}
+				// Collapse the node and all it's children
+				function expand(d) {
+				  if(d._children) {
+					d.children = d._children
+					d.children.forEach(expand)
+					d._children = null
+				  }
+				}
+				// Toggle children on click.
+				function click(d) 
+				{
+					if (d.children) {
+						d._children = d.children;
+						d.children = null;
+					} else 
+					{
+						d.children = d._children;
+						d._children = null;
+					}
+					update(d,theAllLinks);
+				}
+				// Collapse/expand entire tree on double-click
+				function dblclick(d) 
+				{
+					if(d.children) 
+					{
+						collapse(d);
+					}
+					else if(d._children)
+					{
+						expand(d);
+					}
+					update(d,theAllLinks);
+				}	
+
+				
+				
+				//aigner: Here the tree layout is created
+                var d3_body = d3.select("body")
+                var lobiID = String(getRandomInt(0,1000))
+                var divClassName = "treeDiv"+lobiID
+                var treeLayoutdiv = d3_body.append("div").attr("class",divClassName+" panel-default")
+                                                .style("left","200px")
+                                                .style("top","200px")
+                                                .style("position", "absolute")
+                treeLayoutdiv.append("div").attr("class","panel-heading")
+                    .append("div").attr("class","panel_title").append("h4").text(theName)
+                $('.'+divClassName).lobiPanel({
+                    reload: false,
+                    editTitle: false,
+                    unpin: false,
+                    minWidth: 200,
+                    maxWidth: 100000,
+                    minHeight: 200,
+                    maxHeight: 100000,
+                });
+                $('.'+divClassName).lobiPanel('unpin');										
+				var treeLayoutSVG = treeLayoutdiv.append("svg").attr("class","treeLayoutSVG")
+				var treeGroup = treeLayoutSVG.append("g").attr("class","treeGroup").style("position","absolute")
+								.attr("transform", "translate(50,0)");
+				var margin = {top: 20, right: 90, bottom: 20, left: 90},
+							  width = 960 - margin.left - margin.right,
+							  height = 500 - margin.top - margin.bottom;
+
+				// append the svg object to the body of the page
+				// appends a 'group' element to 'svg'
+				// moves the 'group' element to the top left margin
+				var offset_tmp = 60;
+				treeLayoutSVG = treeLayoutSVG.attr("width", width + 1.2*margin.right + margin.left+offset_tmp)
+						 .attr("height", height + margin.top + margin.bottom+offset_tmp);
+				treeLayoutdiv.attr("width", width + 1.2*margin.right + margin.left+offset_tmp)
+						 .attr("height", height + margin.top + margin.bottom+offset_tmp)
+						 .on("mouseover",function(){d3.select(this).style("cursor", "grab")})
+				treeGroup = treeGroup
+					.attr("width", width + margin.right + margin.left)
+					.attr("height", height + margin.top + margin.bottom);
+					
+				
+				
+				var frame = treeGroup.append("rect")
+					.attr("class","treeFrame")
+					.attr("stroke-width", 1)
+					.attr("stroke", "white")
+					.attr("fill-opacity", .8);				
+				
+				
+				// Define the root
+				root = treeData;
+				root.x0 = 0;
+				root.y0 = 0;
+				
+				// Append a group which holds all nodes and which the zoom Listener can act upon.
+				var svgGroup_xOff = root.name.length*10+50
+				var svgGroup = treeGroup.append("g")
+					.attr("class","tree_"+theName)
+					.attr("transform", "translate("+ svgGroup_xOff + "," + String(margin.top+10) + ")");
+				
+				collapse(root);
+				update(root,theAllLinks);
+			
+				
+				function update(source,allLinks) {
+					// Compute the new height, function counts total children of root node and sets tree height accordingly.
+					// This prevents the layout looking squashed when new nodes are made visible or looking sparse when nodes are removed
+					// This makes the layout more consistent.
+					var levelWidth = [1];
+					var levelLength = [1];
+					var childCount = function(level, n) {
+
+						if (n.children && n.children.length > 0) {
+							if (levelWidth.length <= level + 1) levelWidth.push(0);
+							
+							levelWidth[level + 1] += n.children.length;
+							n.children.forEach(function(d) {
+								childCount(level + 1, d);
+							});
+						}
+					};
+					childCount(0, root);
+
+					var newHeight = d3.max(levelWidth) * 60; // 20 pixels per line
+					var newWidth = viewerWidth+300;
+					
+					//BENNI: fill in viewerHeight instead of newHeight for other expanding/collapsing beaviour
+					tree = tree.size([newHeight, newWidth]);
+					
+					frame = frame.attr("width",newWidth)
+						.attr("height",newHeight+60)
+						.attr("fill","white");
+						
+					
+					
+					// Compute the new tree layout.
+					var nodes = tree.nodes(root),
+						links = tree.links(nodes);
+						
+						
+					//aigner: count all descendants of a node
+					function countDescendants(node, counter) 
+					{
+						if (node._children)
+						{
+							node._children.forEach(function(n)
+							{
+								counter = countDescendants(n, counter);
+							});
+						}
+						else if (node.children)
+						{
+							node.children.forEach(function(n)
+							{
+								counter = countDescendants(n, counter);
+							});
+						}
+						else
+						{
+							counter ++;
+						}
+						return counter;
+					}
+					
+					
+					var depths = [];
+					var labelLength = [];
+					nodes.forEach(function(d) 
+					{				
+						//aigner: If node is collapsed show number of ancestors
+						if (d._children)
+						{
+							d._childrenNum = countDescendants(d, 0);
+							d.text = d.name + " (" + d._childrenNum + ")";
+						}
+						else 
+						{
+							d.text = d.name
+						}
+						
+						//aigner: Find maximum labelLength for each level
+						if (!depths.includes(d.depth))
+						{
+							depths.push(d.depth);
+							labelLength.push(d.text.length);
+						}
+						else
+						{
+							if (d.depth!=0){labelLength[depths.indexOf(d.depth)] = Math.max(d.text.length, labelLength[depths.indexOf(d.depth)]);}
+						}
+					});
+					// Set widths between levels based on labelLength of each level.
+					var newWidth=0;	
+					var depth_tmp = 0;			
+					nodes.forEach(function(d) 
+					{
+						if (d.parent)
+						{
+							d.y = d.parent.y+(labelLength[depths.indexOf(d.depth)])*10+50;
+						}
+						else{d.y=0}
+						
+						
+						if (newWidth<d.y)
+						{newWidth=d.y;}
+						
+						// console.log("##############")
+						// console.log(d.name)
+						// console.log("x = " + d.x)
+						// console.log("y = " + d.y)
+						// console.log("depth = " + depths.indexOf(d.depth))
+						// console.log("##############")
+					});	
+					
+					
+					newWidth=Math.max(newWidth,getTextWidth(theName,"Arial 12pt"));					
+					//aigner: Adjust height and width of the frame
+					$('.'+divClassName).lobiPanel('setWidth', newWidth + margin.top + margin.bottom +400+maxLabelLength*25+offset_tmp);
+                    $('.'+divClassName).lobiPanel('setHeight', newHeight + margin.top + 2*margin.bottom+offset_tmp);
+					treeLayoutSVG = treeLayoutSVG.attr("height", newHeight + margin.top + margin.bottom+offset_tmp)
+					treeLayoutSVG = treeLayoutSVG.attr("width", newWidth + margin.top + margin.bottom +300+maxLabelLength*25+offset_tmp)
+					frame = frame.attr("height", newHeight + margin.top + margin.bottom)
+					frame = frame.attr("width", newWidth + margin.top + margin.bottom+300+maxLabelLength*15)
+
+
+					// Update the nodes…
+					var treeNode = svgGroup.selectAll("g.treeNode")
+						.data(nodes, function(d) {
+							return d.id || (d.id = ++i);
+						});
+
+					var dblclick_timer = false;
+					// Enter any new nodes at the parent's previous position.
+					var nodeEnter = treeNode.enter().append('g')
+					  .attr('class', 'treeNode')
+					  .attr("transform", function(d) {
+						return "translate(" + source.y0 + "," + source.x0 + ")";
+					})
+					.on("mousedown", function(d) {
+						if (d3.event.which != 3)
+						{
+							// if double click timer is active, this click is the double click
+							if ( dblclick_timer )
+							{
+								clearTimeout(dblclick_timer)
+								dblclick_timer = false
+								// double click code code comes here
+								//console.log("DOUBLE CLICK")
+								dblclick(d);
+							}
+							// otherwise, what to do after single click (double click has timed out)
+							else dblclick_timer = setTimeout( function(){
+								dblclick_timer = false
+								// single click code code comes here
+								//console.log("SINGLE CLICK")
+								click(d);
+							}, 250)
+						}
+					})
+						
+					
+					nodeEnter.append("circle")
+						.attr('class', 'nodeCircle')
+						.attr("r", 0)
+						.style("fill", function(d) {
+							if (d._children)
+							{
+								if(d.pipeLineIn && !d.pipeLineOut){return '#ea9999'}
+								else if(!d.pipeLineIn && d.pipeLineOut){return '#d6ea99'}
+								else {return "lightsteelblue"}
+							}
+							else{return "#fff";}
+						})		
+						.style("stroke", function(d) {
+							if(d.pipeLineIn && !d.pipeLineOut){
+								//console.log(d);
+								return '#CC0000'}
+							else if(!d.pipeLineIn && d.pipeLineOut){
+								//console.log(d);
+								return '#99CC00'}
+						})
+						.attr("cx", function(d) {return xOffset});
+
+					nodeEnter.append("text")
+						.attr("x", function(d) 
+						{
+								return d.children || d._children ? -10+xOffset : 10+xOffset;
+						})
+						.attr("dy", ".35em")
+						.attr('class', 'nodeText')
+						.attr("text-anchor", function(d) {
+							return d.children || d._children ? "end" : "start";
+						})
+						.text(function(d) {
+							return d.text;
+						})
+						.style("fill-opacity", 0)
+						
+
+					// Update the text to reflect whether node has children or not.
+					treeNode.select('text')
+						.attr("x", function(d) {
+							return d.children || d._children ? -10+xOffset : 10+xOffset;
+						})
+						.attr("text-anchor", function(d) {
+							return d.children || d._children ? "end" : "start";
+						})
+						.text(function(d) {
+							return d.text;
+						});
+
+					// Change the circle fill depending on whether it has children and is collapsed
+					treeNode.select("circle.nodeCircle")
+						.attr("r", 4.5)
+						.style("fill", function(d) {
+							if (d._children)
+							{
+								if(d.pipeLineIn && !d.pipeLineOut){return '#ea9999'}
+								else if(!d.pipeLineIn && d.pipeLineOut){return '#d6ea99'}
+								else {return "lightsteelblue"}
+							}
+							else{return "#fff";}
+						})			
+					
+					
+					function showVariableTable(aVariable)
+					{						
+											
+                        var headLine = "Node Information (" + aVariable.name + ")";
+						var data = [];
+						// render the table(s)
+                        data.push({ "name" : "Name", "value" : "\""+aVariable.name+"\"" })
+                        data.push({ "name" : "xPath", "value" : aVariable.xPath })
+						if (aVariable.type){data.push({ "name" : "Type", "value" : aVariable.type })}
+						if (aVariable.level){data.push({ "name" : "Level", "value" : aVariable.level })}
+						if (aVariable.children || aVariable._children)
+						{
+							var childrenNum=0;
+							if (aVariable.children){childrenNum=childrenNum+aVariable.children.length}
+							if (aVariable._children){childrenNum=childrenNum+aVariable._children.length}
+							data.push({ "name" : "Number of children", "value" : childrenNum })
+						}
+						if (aVariable.dimension){data.push({ "name" : "Dimension", "value" : aVariable.dimension })}
+						else if(aVariable.dimension===null){data.push({ "name" : "Dimension", "value" : "undefined" })}
+						if (aVariable.value){data.push({ "name" : "Value(s)", "value" : aVariable.value })}
+						
+                        var d3_body = d3.select("body");
+                        
+                        var panel_div = d3_body.append("div").attr("class", "myPanel panel-default")
+                        panel_div.append("div").attr("class","panel-heading")
+                            .append("div").attr("class","panel_title").append("h4").text(headLine)
+                        var listGroup = panel_div.append("div").attr("class","panel-body")
+                            .append("table").attr("id","myTable")
+                            .append("tbody")
+                            
+                        data.forEach(function(listElement)
+                        {
+                            var row = listGroup.append("tr")
+                            row.append("td").text(listElement.name)
+                            row.append("td").text(listElement.value)
+                            
+                        })
+                        $('.myPanel').lobiPanel({
+                            reload: false,
+                            editTitle: false,
+                            expand: false,
+                            unpin: false,
+                            resize: "none",
+                            minWidth: 200,
+                            minHeight: 200,
+                            maxWidth: 1100,
+                            maxHeight: 1200,
+                        });
+                        $('.myPanel').lobiPanel('unpin');
+					}
+					
+					//Highlight function, that shows usage of a node in the XDSM
+					function highlight(data,aText)
+					{
+						aText = "/"+data.name+aText;
+						if (data.parent){highlight(data.parent,aText)}
+						else
+						{
+							allLinks[0].forEach(function(aLink)
+							{
+								
+								aLink.__data__.pipeData_in = aLink.__data__.source.pipeline_data[aLink.__data__.target.name];
+								aLink.__data__.pipeData_out = aLink.__data__.target.pipeline_data[aLink.__data__.source.name];
+								aLink.__data__.pipeDataName_in = "";
+								aLink.__data__.pipeDataName_out = "";
+								aLink.__data__.name = "";
+								if (aLink.__data__.pipeData_in)
+								{
+									for (var i=0; i<aLink.__data__.pipeData_in.length; i++)
+									{
+										if (i==0){aLink.__data__.pipeDataName_in += aLink.__data__.pipeData_in[i];}
+										else{aLink.__data__.pipeDataName_in += "," + aLink.__data__.pipeData_in[i];}
+										
+									}
+									aLink.__data__.name += aLink.__data__.pipeDataName_in
+								}
+								if (aLink.__data__.pipeData_out)
+								{
+									for (var i=0; i<aLink.__data__.pipeData_out.length; i++)
+									{
+										if (i==0){aLink.__data__.pipeDataName_out += aLink.__data__.pipeData_out[i];}
+										else{aLink.__data__.pipeDataName_out += "," + aLink.__data__.pipeData_out[i];}
+									}
+									aLink.__data__.name += aLink.__data__.pipeDataName_out
+								}
+							})
+											
+							//var allLinks_tmp = allLinks[0];
+							allLinks[0].forEach(function(p) {
+								var firstElement_tmp = p.__data__.name.split("/")[1]
+								var text_fromFirst = "/"+firstElement_tmp+aText.split(firstElement_tmp)[1]
+								if (include(p.__data__.name,text_fromFirst))
+								{
+									d3.select(p)
+										.style("stroke-opacity", 1.0)
+								}
+								else
+								{
+									d3.select(p).style("stroke-opacity", 0);			
+								}
+							});
+						}
+					}
+					
+					//Function writeTreeToXML goes through tree nodes and puts the into an xml document
+					function writeTreeToXML(aNode,anXMLDoc,anXPath)
+					{
+						//Variable "children" 
+						//--> One children variable, no matter whether a node has "_children" (collapsed) or "children" (expanded)
+						var children;
+						if (aNode._children){children = aNode._children;}
+						else if (aNode.children){children = aNode.children;}
+						
+						//Get current xml element with its xPath
+						var element = anXMLDoc.evaluate(anXPath,anXMLDoc, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null ).singleNodeValue;
+						if (element != null) {element.value = '...';}
+						
+						//If a node has children (collapsed or expanded), loop through them
+						if (children)
+						{
+							for (var i=0; i < children.length;i++)
+							{
+								//Name of the new XML element --> childName
+								var child = children[i];
+								var childName = child.name.split(/[\[\]]+/);//Split childName at "[]" which is the uID 
+								var cleanChildName = childName[0].split(/[\+\*\^\-\ \#]+/);//Split childName all special characters
+								var newNode = anXMLDoc.createElement(String(cleanChildName[0]));
+								
+								//The children are appended to the xPath --> newXPath
+								var newXPath = anXPath+"/"+cleanChildName[0];
+								
+								//If childName contains a uID, make the uID an attribute
+								if (childName[1])
+								{
+									if (parseInt(childName[1]))
+									{
+										var dummyID = childName[1];
+										newNode.setAttribute("dummyID", dummyID)
+										newXPath = newXPath+"[@dummyID='"+dummyID+"']";
+									}
+									else
+									{
+										var uID = childName[1];
+										newNode.setAttribute("uID", uID)
+										newXPath = newXPath+"[@uID='"+uID+"']";
+									}
+								}
+								if (cleanChildName.length>1) {newNode.setAttribute("elementName", childName[0])};
+								
+								//Append the newNode to the xml structure
+								element.appendChild(newNode);
+								
+								
+								
+								////aigner: Sorting of XML elements according to "uID"
+								// var items = element.children;
+								// var itemsArr = [];
+								// for (var j in items) {
+									// if (items[j].nodeType == 1) { // get rid of the whitespace text nodes
+										// itemsArr.push(items[j]);
+									// }
+								// }
+								// itemsArr.sort(function(a,b){
+									// if (a.getAttribute("uID") < b.getAttribute("uID"))
+										// return -1;
+									// if (a.getAttribute("uID") > b.getAttribute("uID"))
+										// return 1;
+									// return 0;
+									// });
+
+								// for (j = 0; j < itemsArr.length; ++j) {
+								  // element.appendChild(itemsArr[j]);
+								// }
+								
+								//call function writeTreeToXML recursively for all children
+								writeTreeToXML(child,anXMLDoc,newXPath)
+							}
+						}
+						else
+						{
+							if (aNode.value){element.innerHTML = String(aNode.value);}
+							else{element.innerHTML = " ";}
+						}
+						//return the xml document
+						return anXMLDoc;
+					}
+					
+					function removeAttributeInAllElements(aDocument,attribute)
+					{
+					  var matchingElements = [];
+					  var allElements = aDocument.getElementsByTagName('*');
+					  for (var i = 0, n = allElements.length; i < n; i++)
+					  {
+						if (allElements[i].getAttribute(attribute) !== null)
+						{
+							allElements[i].removeAttribute(attribute);
+						}
+					  }
+					  return matchingElements;
+					}
+					
+					function putAncestorsInXMLString(strWrapper, aNode)
+					{
+						//Name of the new XML element
+						var nodeName = aNode.name.split(/[\[\]]+/);//Split name at "[]" which is the uID 
+						var cleanNodeName = nodeName[0].split(/[\+\*\^\-\ \#]+/);//Split nodeName all special characters
+						//If nodeName contains a uID, make the uID an attribute
+						if (nodeName[1])
+						{
+							var uID = nodeName[1];
+							strWrapper.val = "<"+cleanNodeName[0]+" uID='"+ uID +"'>"+strWrapper.val+"</"+cleanNodeName[0]+">";;
+						}
+						else
+						{
+							strWrapper.val = "<"+cleanNodeName[0]+">"+strWrapper.val+"</"+cleanNodeName[0]+">";;
+						}
+						var aParent = aNode.parent;
+						if (aParent)
+						{
+							return putAncestorsInXMLString(strWrapper, aParent);
+						}
+						else 
+						{
+							return strWrapper;
+						}
+					}
+					
+					function putAncestorsInXPath(strWrapper, aNode)
+					{
+						//Name of the new XML element
+						var nodeName = aNode.name.split(/[\[\]]+/);//Split name at "[]" which is the uID 
+						var cleanNodeName = nodeName[0].split(/[\+\*\^\-\ \#]+/);//Split nodeName all special characters
+						//If nodeName contains a uID, make the uID an attribute
+						if (nodeName[1])
+						{
+							var uID = nodeName[1];
+							strWrapper.val = "/"+cleanNodeName[0]+"[@uID='"+uID+"']"+strWrapper.val;
+						}
+						else
+						{
+							strWrapper.val = "/"+cleanNodeName[0]+strWrapper.val;
+						}
+						var aParent = aNode.parent;
+						if (aParent)
+						{
+							return putAncestorsInXPath(strWrapper, aParent);
+						}
+						else 
+						{
+							return strWrapper;
+						}
+					}
+					
+					// Function to download data to a file
+					function download(filename, text) {
+						var element = document.createElement('a');
+						element.setAttribute('href', 'data:text/plain;charset=utf-8,' + encodeURIComponent(text));
+						element.setAttribute('download', filename);
+
+						element.style.display = 'none';
+						document.body.appendChild(element);
+
+						element.click();
+
+						document.body.removeChild(element);
+					}
+					
+					//menu --> functions for right click options
+					var nodeMenu = [
+					{
+						title: 'Show node information',
+						onMouseDown: function(elm, d, i) {
+							showVariableTable(d);
+						},
+						onMouseUp: function(elm, d, i) {},
+						onMouseOver: function(elm, d, i) {},
+						childrenItems: []
+					},
+					{
+						title: 'Show usage of node in diagram',
+						onMouseDown: function(elm, d, i) {
+							d3.selectAll(".treeFrame").attr("fill-opacity", .5);
+							d3.selectAll(".nodeText").style("fill-opacity", 0.5);					
+							var theText="";
+							highlight(d,theText);
+						},
+						onMouseUp: function(elm, d, i) {				
+							d3.selectAll(".edgeBundlesLink")
+								.style("stroke-opacity",.4)
+							d3.selectAll(".treeFrame").attr("fill-opacity", .8);
+							d3.selectAll(".nodeText").style("fill-opacity", 1);					
+						},
+						onMouseOver: function(elm, d, i) {
+						},
+						childrenItems: []
+					},
+					{
+						title: 'Copy x-path to clipboard',
+						onMouseDown: function(elm, d, i) {
+							function copyToClipboard(text) 
+							{
+								window.prompt("Copy to clipboard: Ctrl+C, Enter", text);
+							}
+							function copyXPathToClipboard(data,aText)
+							{
+								aText = "/"+data.name+aText;
+								if (data.parent){copyXPathToClipboard(data.parent,aText)}
+								else{copyToClipboard(aText);}
+							}
+							var copyText="";
+							copyXPathToClipboard(d,copyText);
+							d3.select('.d3-context-menu').style('display', 'none');
+						},
+						onMouseUp: function(elm, d, i) {
+						},
+						onMouseOver: function(elm, d, i) {
+						},
+						childrenItems: []
+					},
+					{
+						title: 'Download full tree as XML-file',
+						onMouseDown: function(elm, d, i) {
+							//Begin xml structure with the first element
+							var xmlString = "<"+nodes[0].name+">"+"</"+nodes[0].name+">";
+							//Create a new xml document
+							var parser = new DOMParser();
+							var xmlDocument = parser.parseFromString(xmlString, "text/xml"); //important to use "text/xml"
+							//Get initial xPath of the tree and pass it to the function "writeTreeToXML"
+							var initialXPath = "/"+nodes[0].name;								
+							writeTreeToXML(nodes[0],xmlDocument,initialXPath);
+							//remove all attributes dummyID
+							removeAttributeInAllElements(xmlDocument,'dummyID');
+							//Make the xml document a string
+							var serializer = new XMLSerializer();
+							var xmlString = serializer.serializeToString(xmlDocument);
+							xmlString = vkbeautify.xml(xmlString);														
+							//Download a document with the xml-schema
+							download(theName+'_full.xml',xmlString);						
+						},
+						onMouseUp: function(elm, d, i) {
+						},
+						onMouseOver: function(elm, d, i) {
+						},
+						childrenItems: []
+					},
+					{
+						title: 'Download tree as XML-file from current node',
+						onMouseDown: function(elm, d, i) {
+							var xmlString = putAncestorsInXMLString({ val : '' }, d).val;
+							var initialXPath = putAncestorsInXPath({ val : '' }, d).val;												
+							//Create a new xml document
+							var parser = new DOMParser();
+							var xmlDocument = parser.parseFromString(xmlString, "text/xml"); //important to use "text/xml"
+							//Get initial xPath of the tree and pass it to the function "writeCurrentTreeToXML"
+							writeTreeToXML(d,xmlDocument,initialXPath);
+							//remove all attributes dummyID
+							removeAttributeInAllElements(xmlDocument,'dummyID');
+							//Make the xml document a string
+							var serializer = new XMLSerializer();
+							xmlString = serializer.serializeToString(xmlDocument);
+							xmlString = vkbeautify.xml(xmlString);														
+							//Download a document with the xml-schema
+							download(theName+"_"+d.name+'.xml',xmlString);						
+						},
+						onMouseUp: function(elm, d, i) {
+						},
+						onMouseOver: function(elm, d, i) {
+						},
+						childrenItems: []
+					}
+					]
+					
+					nodeEnter.append("svg:title").text("Click left to expand, click right to inspect")
+					
+					nodeEnter = nodeEnter.on('contextmenu', d3.contextMenu(nodeMenu));
+								
+					// UPDATE		
+					// Transition nodes to their new position.
+					var nodeUpdate = treeNode.transition()
+						.duration(duration)
+						.attr("transform", function(d) {
+							return "translate(" + d.y + "," + d.x + ")";
+						});
+
+					// Fade the text in
+					nodeUpdate.select("text")
+						.style("fill-opacity", 1);
+					
+					//New object for invisible nodes
+					var exitNodes = [];
+					
+					// Remove any exiting nodes
+					var nodeExit = treeNode.exit().transition()
+					  .duration(duration)
+					  .attr("transform", function(d) {
+						  return "translate(" + source.y + "," + source.x + ")";
+					  })
+					  .remove();
+					
+					function translation(d) 
+					{
+						
+						var closestAncestor;
+						closestAncestor = findClosestAncestor(nodes,d);
+						exitNodes.push(d);
+						exitNodes[exitNodes.length-1].x = closestAncestor.x;
+						exitNodes[exitNodes.length-1].y = closestAncestor.y;
+						return "translate(" + closestAncestor.y + "," + closestAncestor.x + ")";
+					}
+					
+					function findClosestAncestor(allNodes, element) 
+					{
+						var level = 0;
+						var closestAncestor;
+						for (var i=0;i<allNodes.length;i++)
+						{
+							if (!allNodes[i].level){allNodes[i].level=0};
+							if (isDescendant(allNodes[i],element) && allNodes[i].level >= level)
+							{
+								level = allNodes[i].level;
+								closestAncestor = allNodes[i];
+							}
+						}
+						return closestAncestor;
+					}
+					
+					function isDescendant(parent, child) 
+					{
+						 var node = child.parent;
+						 while (node != null) 
+						 {
+							if (node == parent) 
+							{
+								return true;
+							}
+							node = node.parent;
+						 }
+						 return false;
+					}
+				
+
+					// Update the links…
+					var link = svgGroup.selectAll("path.treeLink")
+						.data(links, function(d) {
+							return d.target.id;
+						});
+
+					// Enter any new links at the parent's previous position.
+					link.enter().insert("path", "g")
+						.attr("class", "treeLink")
+						.attr("d", function(d) {
+							var o = {
+								x: source.x0,
+								y: source.y0
+							};
+							return diagonal({
+								source: o,
+								target: o
+							});
+						});
+
+					// Transition links to their new position.
+					link.transition()
+						.duration(duration)
+						.attr("d", diagonal);
+
+					// Transition exiting nodes to the parent's new position.
+					link.exit().transition()
+						.duration(duration)
+						.attr("d", function(d) {
+							var o = {
+								x: source.x,
+								y: source.y
+							};
+							return diagonal({
+								source: o,
+								target: o
+							});
+						})
+						.remove();
+					
+					// Stash the old positions for transition.
+					nodes.forEach(function(d) {						
+						d.x0 = d.x;
+						d.y0 = d.y;
+					});
+				}
+			}
+
+			},{"d3":1}]},{},[2]);
+		}
+		
+		function sankeyDiagram_script(data, graphID)
+		{
+			(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
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+			2:[function(require,module,exports){
+			"use strict";
+
+			var d3 = require('d3');
+
+
+			//aigner: functions for drawing expand- and collapse-symbols
+			function drawExpandSymbol(aCircle, line1, line2)
+			{        
+				 aCircle = aCircle
+					.attr("r", 10)
+					.style("stroke", "black")
+					.style("stroke-width", 2)
+					.style("fill", "#99CC00")
+					.style("fill-opacity", .6)
+				line1 = line1
+					.attr("x1", parseFloat(aCircle.attr("cx"))-5)
+					.attr("y1", parseFloat(aCircle.attr("cy")))
+					.attr("x2", parseFloat(aCircle.attr("cx"))+5)
+					.attr("y2", parseFloat(aCircle.attr("cy")))
+					.style("stroke", "black")
+					.style("stroke-width", 2);
+				line2 = line2
+					.attr("x1", parseFloat(aCircle.attr("cx")))
+					.attr("y1", parseFloat(aCircle.attr("cy"))-5)
+					.attr("x2", parseFloat(aCircle.attr("cx")))
+					.attr("y2", parseFloat(aCircle.attr("cy"))+5)
+					.style("stroke", "black")
+					.style("stroke-width", 2);
+			}
+			function drawRemoveSymbol(anXdsm, aCircle, aMinus)
+			{        
+				 var xOffset=150;
+				 var yOffset=12;
+				 aCircle = aCircle
+					.attr("cx", anXdsm.svg.attr("width")-xOffset)
+					.attr("cy", yOffset)
+					.attr("r", 10)
+					.classed("remCircle",true)
+				aMinus = aMinus
+					.attr("x1", anXdsm.svg.attr("width")-xOffset+5)
+					.attr("y1", yOffset)
+					.attr("x2", anXdsm.svg.attr("width")-xOffset-5)
+					.attr("y2", yOffset)
+					.classed("remMinus",true)
+			}
+			//d3-context-menu for right-click-option
+			d3.contextMenu = function (menu, openCallback) {
+
+				// create the div element that will hold the context menu
+				d3.selectAll('.d3-context-menu').data([1])
+					.enter()
+					.append('div')
+					.attr('class', 'd3-context-menu');
+
+				// close menu
+				d3.select('body').on('click.d3-context-menu', function() {
+					d3.select('.d3-context-menu').style('display', 'none');
+				});
+
+				// this gets executed when a contextmenu event occurs
+				return function(data, index) {	
+					var elm = this;
+
+					d3.selectAll('.d3-context-menu').html('');
+					var list = d3.selectAll('.d3-context-menu').append('ul');
+						list.selectAll('li').data(menu).enter()
+						.append('li')
+						.html(function(d) {
+							return d.title;
+						})
+						.on('mousedown', function(d, i) {
+							d.onMouseDown(elm, data, index);
+						})
+						.on('mouseup', function(d, i) {
+							d.onMouseUp(elm, data, index);
+							d3.select('.d3-context-menu').style('display', 'none');
+						})
+						.on('mouseenter',function(d,i){
+							d.onMouseOver(elm,data,index);
+							if(d.childrenItems.length>0 )
+								 {
+                                  var li = this
+								  d3.select(this).selectAll("ul").remove(); 
+								  d3.select(this)
+									.append("ul")
+                                    .style("top",String(li.offsetTop-5)+"px")
+									.selectAll("li")
+									   .data(d.childrenItems)
+										.enter().append("li")
+										  .text(function(d) { return d.title; })
+									 .on("mouseenter", function(d,i){
+											d.onMouseOver(elm,data,index);
+										})
+									 .on('click',  function(d, i) {
+											d.onMouseClick(elm, d, index);
+										})
+									 .on('mouseleave',function(d,i){
+										
+										});
+								 }
+							 else
+								 return false;
+						})
+						.on('mouseleave',function(d,i){
+							d3.select(this).selectAll("ul").style('display', 'none')                  
+						});
+					
+					  
+
+					// the openCallback allows an action to fire before the menu is displayed
+					// an example usage would be closing a tooltip
+					if (openCallback) openCallback(data, index);
+
+					// display context menu
+					d3.select('.d3-context-menu')
+						.style('left', (d3.event.pageX - 2) + 'px')
+						.style('top', (d3.event.pageY - 2) + 'px')
+						.style('display', 'block');
+                    
+                    //Prevent the default event, which is the left-click. 
+                    //This means, the context-menu will only appear on right mouse clicks
+					d3.event.preventDefault();
+                    
+                    //Place context-menu always on top of everything esle
+                    d3.select(".d3-context-menu").style("z-index",Number.MAX_SAFE_INTEGER);
+				};
+			};
+
+			//aigner: Include function
+			function include(arr,obj) {
+					return (arr.indexOf(obj) != -1);
+			}
+
+			//aigner: Function creates a table
+			function tabulate(aTable,data,columns) {
+				var thead = aTable.append('thead');
+				var	tbody = aTable.append('tbody');  
+
+				// create a row for each object in the data
+				var rows = tbody.selectAll('tr')
+				  .data(data)
+				  .enter()
+				  .append('tr');
+
+				// create a cell in each row for each column
+				var cells = rows.selectAll('td')
+				  .data(function (row) {
+					return columns.map(function (column) {
+					  return {column: column, value: row[column]};
+					});
+				  })
+				  .enter()
+				  .append('td')
+					.html(function (d) { return d.value; });
+
+				return aTable;
+			}
+
+			//aigner: Move to front function
+			d3.selection.prototype.moveToFront = function() {  
+			  return this.each(function(){
+				this.parentNode.appendChild(this);
+			  });
+			};
+			//aigner: Move to back function
+			d3.selection.prototype.moveToBack = function() {  
+				return this.each(function() { 
+					var firstChild = this.parentNode.firstChild; 
+					if (firstChild) { 
+						this.parentNode.insertBefore(this, firstChild); 
+					} 
+				});
+			};
+
+
+			//aigner: biHisankey functions (Source: http://bl.ocks.org/Neilos/584b9a5d44d5fe00f779)
+			d3.biHiSankey = function () {
+			  "use strict";
+
+			  var biHiSankey = {},
+				nodeWidth = 24,
+				nodeSpacing = 8,
+				linkSpacing = 5,
+				arrowheadScaleFactor = 0, // Specifies the proportion of a link's stroke width to be allowed for the marker at the end of the link.
+				size = [1, 1], // default to one pixel by one pixel
+				nodes = [],
+				nodeMap = {},
+				parentNodes = [],
+				leafNodes = [],
+				links = [],
+				xScaleFactor = 1,
+				yScaleFactor = 1,
+				defaultLinkCurvature = 0.5;
+
+			  function center(node) {
+				return node.y + node.height / 2;
+			  }
+
+			  function value(link) {
+				return link.value;
+			  }
+
+			  function initializeNodeArrayProperties(node) {
+				node.sourceLinks = [];
+				node.rightLinks = [];
+				node.targetLinks = [];
+				node.leftLinks = [];
+				node.connectedNodes = [];
+				node.children = [];
+				node.ancestors = [];
+			  }
+			  // generates the nodeMap {"1": <node1>, "2": <node2>}
+			  // and initializes the array properties of each node
+			  function initializeNodeMap() {
+				nodes.forEach(function (node) {
+				  nodeMap[node.id] = node;
+				  initializeNodeArrayProperties(node);
+				});
+			  }
+
+			  function computeLeafNodes() {
+				leafNodes = nodes.filter(function (node) {
+				  return !node.children.length;
+				});
+			  }
+
+			  function computeParentNodes() {
+				parentNodes = nodes.filter(function (node) {
+				  return node.children.length;
+				});
+			  }
+
+			  function addAncestorsToChildren(node) {
+				node.children.forEach(function (child) {
+				  child.ancestors = child.ancestors.concat(this.ancestors.concat([this]));
+				  addAncestorsToChildren(child);
+				}, node);
+			  }
+
+			  // generate hierarchical connections between parent and child nodes
+			  function computeNodeHierarchy() {
+				var parent,
+					rootNodes = [];
+
+				nodes.forEach(function (node) {
+				  parent = null;
+				  if (parent) {
+					node.parent = parent;
+					parent.children.push(node);
+				  } else {
+					node.parent = null;
+					rootNodes.push(node);
+				  }
+				});
+
+				computeLeafNodes();
+				computeParentNodes();
+
+				rootNodes.forEach(function (rNode) {
+				  addAncestorsToChildren(rNode);
+				});
+			  }
+
+			  // Populate the sourceLinks and targetLinks for each node.
+			  function computeNodeLinks() {
+				var sourceNode, targetNode;
+				links.forEach(function (link) {
+				  sourceNode = nodeMap[link.source] || link.source;
+				  targetNode = nodeMap[link.target] || link.target;
+				  link.id = link.source + '-' + link.target;
+				  link.source = sourceNode;
+				  link.target = targetNode;
+				  sourceNode.sourceLinks.push(link);
+				  targetNode.targetLinks.push(link);
+				});
+			  }
+
+			  function visible(linkCollection) {
+				return linkCollection.filter(function (link) {
+				  return link.source.state === "collapsed" && link.target.state === "collapsed";
+				});
+			  }
+
+			  // When child nodes are collapsed into their parents (or higher ancestors)
+			  // the links between the child nodes should be represented by links
+			  // between the containing ancestors. This function adds those extra links.
+			  function computeAncestorLinks() {
+				// Leaf nodes are never parents of other nodes
+				// Duplicate source and target links between a leaf node and another leaf node
+				// and add to the leaf nodes' parents
+				leafNodes.forEach(function (leafNode) {
+				  leafNode.sourceLinks.forEach(function (sourceLink) {
+					var ancestorTargets,
+					target = sourceLink.target;
+					if (leafNodes.indexOf(target) >= 0) {
+					  ancestorTargets = target.ancestors.filter(function (tAncestor) {
+						return leafNode.ancestors.indexOf(tAncestor) < 0;
+					  });
+					  ancestorTargets.forEach(function (ancestorTarget) {
+						var ancestorLink = { source: leafNode,
+											target: ancestorTarget,
+											value: sourceLink.value,
+											id: leafNode.id + "-" + ancestorTarget.id };
+
+						leafNode.sourceLinks.push(ancestorLink);
+						ancestorTarget.targetLinks.push(ancestorLink);
+						links.push(ancestorLink);
+					  });
+					}
+				  });
+
+				  leafNode.targetLinks.forEach(function (targetLink) {
+					var ancestorSources, source = targetLink.source;
+					if (leafNodes.indexOf(source) >= 0) {
+					  ancestorSources = source.ancestors.filter(function (sAncestor) {
+						return leafNode.ancestors.indexOf(sAncestor) < 0;
+					  });
+					  ancestorSources.forEach(function (ancestorSource) {
+						var ancestorLink = { source: ancestorSource,
+											target: leafNode,
+											value: targetLink.value,
+											id: ancestorSource.id + "-" + leafNode.id };
+						ancestorSource.sourceLinks.push(ancestorLink);
+						leafNode.targetLinks.push(ancestorLink);
+						links.push(ancestorLink);
+					  });
+					}
+				  });
+				});
+
+				// Add links between parents (for when both parents are in collapsed state)
+				parentNodes.forEach(function (parentNode) {
+				  parentNode.sourceLinks.forEach(function (sourceLink) {
+					var ancestorTargets, target = sourceLink.target;
+					if (leafNodes.indexOf(target) >= 0) {
+					  ancestorTargets = target.ancestors.filter(function (tAncestor) {
+						return parentNode.ancestors.indexOf(tAncestor) < 0;
+					  });
+					  ancestorTargets.forEach(function (ancestorTarget) {
+						var ancestorLink = { source: parentNode,
+											target: ancestorTarget,
+											value: sourceLink.value,
+											id: parentNode.id + "-" + ancestorTarget.id };
+
+						parentNode.sourceLinks.push(ancestorLink);
+						ancestorTarget.targetLinks.push(ancestorLink);
+						links.push(ancestorLink);
+					  });
+					}
+				  });
+				});
+			  }
+
+			  // To reduce clutter in the diagram merge links that are from the
+			  // same source to the same target by creating a new link
+			  // with a value equal to the sum of the values of the merged links
+			  function mergeLinks() {
+				var linkGroups = d3.nest()
+				  .key(function (link) { return link.source.id + "->" + link.target.id; })
+				  .entries(links)
+				  .map(function (object) { return object.values; });
+
+				links = linkGroups.map(function (linkGroup) {
+				  return linkGroup.reduce(function (previousLink, currentLink) {
+					return {
+					  "source": previousLink.source,
+					  "target": previousLink.target,
+					  "id": d3.min([previousLink.id, currentLink.id]),
+					  "value": previousLink.value + currentLink.value
+					};
+				  });
+				});
+			  }
+
+			  function nodeHeight(sideLinks) {
+				var spacing = Math.max(sideLinks.length - 1, 0) * linkSpacing,
+					scaledValueSum = d3.sum(sideLinks, value) * yScaleFactor;
+				return scaledValueSum + spacing;
+			  }
+
+			  // Compute the value of each node by summing the associated links.
+			  // Compute the number of spaces between the links
+			  // Compute the number of source links for later decrementing
+			  function computeNodeValues() {
+				nodes.forEach(function (node) {
+				  node.value = Math.max(
+					d3.sum(node.leftLinks, value),
+					d3.sum(node.rightLinks, value)
+				  );
+				  node.inputs = d3.sum(visible(node.targetLinks), value);
+				  node.outputs = d3.sum(visible(node.sourceLinks), value);
+				  node.height = Math.max(nodeHeight(visible(node.leftLinks)), nodeHeight(visible(node.rightLinks)));
+				  node.linkSpaceCount = Math.max(Math.max(node.leftLinks.length, node.rightLinks.length) - 1, 0);
+				});
+			  }
+
+			  function computeConnectedNodes() {
+				var sourceNode, targetNode;
+				links.forEach(function (link) {
+				  sourceNode = link.source;
+				  targetNode = link.target;
+				  if (sourceNode.connectedNodes.indexOf(targetNode) < 0) {
+					sourceNode.connectedNodes.push(targetNode);
+				  }
+				  if (targetNode.connectedNodes.indexOf(sourceNode) < 0) {
+					targetNode.connectedNodes.push(sourceNode);
+				  }
+				});
+			  }
+
+			  function sourceAndTargetNodesWithSameX() {
+				var nodeArray = [];
+				links.filter(function (link) {
+				  return link.target.x === link.source.x;
+				}).forEach(function (link) {
+				  if (nodeArray.indexOf(link.target) < 0) {
+					nodeArray.push(link.target);
+				  }
+				});
+				return nodeArray;
+			  }
+
+			  function compressInXDirection() {
+				var connectedNodesXPositions,
+					nodesByXPosition = d3.nest()
+					  .key(function (node) { return node.x; })
+					  .sortKeys(d3.ascending)
+					  .entries(nodes)
+					  .map(function (object) { return object.values; });
+
+				nodesByXPosition.forEach(function (xnodes) {
+				  xnodes.forEach(function (node) {
+					connectedNodesXPositions = node.connectedNodes.map(function (connectedNode) {
+					  return connectedNode.x;
+					});
+					// keep decrementing the x value of the node
+					// unless it would have the same x value as one of its source or target nodes
+					// or node.x is already 0
+					while (node.x > 0 && connectedNodesXPositions.indexOf(node.x - 1) < 0) {
+					  node.x -= 1;
+					}
+				  });
+				});
+			  }
+
+			  function scaleNodeXPositions() {
+				var minX = d3.min(nodes, function (node) { return node.x; }),
+					maxX = d3.max(nodes, function (node) { return node.x; }) - minX;
+				xScaleFactor = (size[0] - nodeWidth) / maxX;
+
+				nodes.forEach(function (node) {
+				  node.x *= xScaleFactor;
+				});
+			  }
+
+			  function computeNodeXPositions() {
+				var remainingNodes = nodes,
+					nextNodes,
+					x = 0,
+					addToNextNodes = function (link) {
+					  if (nextNodes.indexOf(link.target) < 0 && link.target.x === this.x) {
+						nextNodes.push(link.target);
+					  }
+					},
+					setValues = function (node) {
+					  node.x = x;
+					  node.width = nodeWidth;
+					  node.sourceLinks.forEach(addToNextNodes, node);
+					};
+
+				while (remainingNodes.length) {
+				  nextNodes = [];
+				  remainingNodes.forEach(setValues);
+				  if (nextNodes.length) {
+					remainingNodes = nextNodes;
+				  } else {
+					remainingNodes = sourceAndTargetNodesWithSameX();
+				  }
+				  x += 1;
+				}
+
+				compressInXDirection();
+				scaleNodeXPositions();
+			  }
+
+			  function computeLeftAndRightLinks() {
+				var source, target;
+				nodes.forEach(function (node) {
+				  node.rightLinks = [];
+				  node.leftLinks = [];
+				});
+				links.forEach(function (link) {
+				  source = link.source;
+				  target = link.target;
+				  if (source.x < target.x) {
+					source.rightLinks.push(link);
+					target.leftLinks.push(link);
+					link.direction = 1;
+				  } else {
+					source.leftLinks.push(link);
+					target.rightLinks.push(link);
+					link.direction = -1;
+				  }
+				});
+			  }
+
+			  function adjustTop(adjustment) {
+				nodes.forEach(function (node) {
+				  node.y -= adjustment;
+				});
+			  }
+
+			  function computeNodeYPositions(iterations) {
+				var minY,
+					alpha,
+					nodesByXPosition = d3.nest()
+					  .key(function (node) { return node.x; })
+					  .sortKeys(d3.ascending)
+					  .entries(nodes)
+					  .map(function (object) { return object.values; });
+
+				function calculateYScaleFactor() {
+				  var linkSpacesCount, nodeValueSum, discretionaryY;
+				  yScaleFactor = d3.min(nodesByXPosition, function (nodes) {
+					linkSpacesCount = d3.sum(nodes, function (node) {
+					  return node.linkSpaceCount;
+					});
+					nodeValueSum = d3.sum(nodes, function (node) {
+					  return node.value;
+					});
+					discretionaryY = (size[1]
+									- (nodes.length - 1) * nodeSpacing
+									- linkSpacesCount * linkSpacing);
+
+					return  discretionaryY / nodeValueSum;
+				  });
+
+				  // Fat links are those with lengths less than about 4 times their heights
+				  // Fat links don't bend well
+				  // Test that yScaleFactor is not so big that it causes "fat" links; adjust yScaleFactor accordingly
+				  links.forEach(function (link) {
+					var linkLength = Math.abs(link.source.x - link.target.x),
+						linkHeight = link.value * yScaleFactor;
+					if (linkLength / linkHeight < 4) {
+					  yScaleFactor = 0.25 * linkLength / link.value;
+					}
+				  });
+				}
+
+				function initializeNodeYPosition() {
+				  nodesByXPosition.forEach(function (nodes) {
+					nodes.forEach(function (node, i) {
+					  node.y = i;
+					  node.heightAllowance = node.value * yScaleFactor + linkSpacing * node.linkSpaceCount;
+					});
+				  });
+				}
+
+				function calculateLinkThickness() {
+				  links.forEach(function (link) {
+					link.thickness = link.value * yScaleFactor;
+				  });
+				}
+
+				function relaxLeftToRight(alpha) {
+				  function weightedSource(link) {
+					return center(link.source) * link.value;
+				  }
+
+				  nodesByXPosition.forEach(function (nodes) {
+					nodes.forEach(function (node) {
+					  if (node.rightLinks.length) {
+						var y = d3.sum(node.rightLinks, weightedSource) / d3.sum(node.rightLinks, value);
+						node.y += (y - center(node)) * alpha;
+					  }
+					});
+				  });
+				}
+
+				function relaxRightToLeft(alpha) {
+				  function weightedTarget(link) {
+					return center(link.target) * link.value;
+				  }
+
+				  nodesByXPosition.slice().reverse().forEach(function (nodes) {
+					nodes.forEach(function (node) {
+					  if (node.leftLinks.length) {
+						var y = d3.sum(node.leftLinks, weightedTarget) / d3.sum(node.leftLinks, value);
+						node.y += (y - center(node)) * alpha;
+					  }
+					});
+				  });
+				}
+
+				function resolveCollisions() {
+				  function ascendingYPosition(a, b) {
+					return a.y - b.y;
+				  }
+
+				  nodesByXPosition.forEach(function (nodes) {
+					var node,
+						dy,
+						y0 = 0,
+						n = nodes.length,
+						i;
+
+					nodes.sort(ascendingYPosition);
+
+					// Push any overlapping nodes down.
+					for (i = 0; i < n; ++i) {
+					  node = nodes[i];
+					  dy = y0 - node.y;
+					  if (dy > 0) {
+						node.y += dy;
+					  }
+					  y0 = node.y + node.heightAllowance + nodeSpacing;
+					}
+
+					// If the bottommost node goes outside the bounds, push it back up.
+					dy = y0 - nodeSpacing - size[1];
+					if (dy > 0) {
+					  node.y -= dy;
+					  y0 = node.y;
+
+					  // Push any overlapping nodes back up.
+					  for (i = n - 2; i >= 0; --i) {
+						node = nodes[i];
+						dy = node.y + node.heightAllowance + nodeSpacing - y0;
+						if (dy > 0) {
+						  node.y -= dy;
+						}
+						y0 = node.y;
+					  }
+					}
+				  });
+				}
+
+				calculateYScaleFactor();
+				initializeNodeYPosition();
+				calculateLinkThickness();
+				resolveCollisions();
+
+				for (alpha = 1; iterations > 0; --iterations) {
+				  alpha *= 0.99;
+				  relaxRightToLeft(alpha);
+				  resolveCollisions();
+				  relaxLeftToRight(alpha);
+				  resolveCollisions();
+				}
+
+				minY = d3.min(nodes, function (node) { return node.y; });
+				adjustTop(minY);
+			  }
+
+			  function computeLinkYPositions() {
+
+				function ascendingLeftNodeYPosition(a, b) {
+				  var aLeftNode = (a.direction > 0) ? a.source : a.target,
+					  bLeftNode = (b.direction > 0) ? b.source : b.target;
+				  return aLeftNode.y - bLeftNode.y;
+				}
+
+				function ascendingRightNodeYPosition(a, b) {
+				  var aRightNode = (a.direction > 0) ? a.target : a.source,
+					  bRightNode = (b.direction > 0) ? b.target : b.source;
+				  return aRightNode.y - bRightNode.y;
+				}
+
+				nodes.forEach(function (node) {
+				  node.rightLinks.sort(ascendingRightNodeYPosition);
+				  node.leftLinks.sort(ascendingLeftNodeYPosition);
+				});
+
+				nodes.forEach(function (node) {
+				  var rightY = 0, leftY = 0;
+
+				  node.rightLinks.forEach(function (link) {
+					if (link.direction > 0) {
+					  link.sourceY = rightY;
+					  if (link.target.state === "collapsed") {
+						rightY += link.thickness + linkSpacing;
+					  }
+					}
+					else {
+					  link.targetY = rightY;
+					  if (link.source.state === "collapsed") {
+						rightY += link.thickness + linkSpacing;
+					  }
+					}
+				  });
+
+				  node.leftLinks.forEach(function (link) {
+					if (link.direction < 0) {
+					  link.sourceY = leftY;
+					  if (link.target.state === "collapsed") {
+						leftY += link.thickness + linkSpacing;
+					  }
+					}
+					else {
+					  link.targetY = leftY;
+					  if (link.source.state === "collapsed") {
+						leftY += link.thickness + linkSpacing;
+					  }
+					}
+				  });
+
+				});
+			  }
+
+
+			  biHiSankey.arrowheadScaleFactor = function (_) {
+				if (!arguments.length) { return arrowheadScaleFactor; }
+				arrowheadScaleFactor = +_;
+				return biHiSankey;
+			  };
+
+			  biHiSankey.collapsedNodes = function () {
+				return nodes.filter(function (node) { return node.state === "collapsed"; });
+			  };
+
+			  biHiSankey.connected = function (nodeA, nodeB) {
+				return nodeA.connectedNodes.indexOf(nodeB) >= 0;
+			  };
+
+			  biHiSankey.expandedNodes = function () {
+				return nodes.filter(function (node) { return node.state === "expanded"; });
+			  };
+
+			  biHiSankey.layout = function (iterations) {
+				computeNodeXPositions();
+				computeLeftAndRightLinks();
+				computeNodeValues();
+				computeNodeYPositions(iterations);
+				computeNodeValues();
+				computeLinkYPositions();
+				return biHiSankey;
+			  };
+
+			  biHiSankey.link = function () {
+				var curvature = defaultLinkCurvature;
+
+				function leftToRightLink(link) {
+				  var arrowHeadLength = link.thickness * arrowheadScaleFactor,
+					  straightSectionLength = (3 * link.thickness / 4) - arrowHeadLength,
+					  x0 = link.source.x + link.source.width,
+					  x1 = x0 + arrowHeadLength / 2,
+					  x4 = link.target.x - straightSectionLength - arrowHeadLength,
+					  xi = d3.interpolateNumber(x0, x4),
+					  x2 = xi(curvature),
+					  x3 = xi(1 - curvature),
+					  y0 = link.source.y + link.sourceY + link.thickness / 2,
+					  y1 = link.target.y + link.targetY + link.thickness / 2;
+				  return "M" + x0 + "," + y0
+					   + "L" + x1 + "," + y0
+					   + "C" + x2 + "," + y0
+					   + " " + x3 + "," + y1
+					   + " " + x4 + "," + y1
+					   + "L" + (x4 + straightSectionLength) + "," + y1;
+				}
+
+				function rightToLeftLink(link) {
+				  var arrowHeadLength = link.thickness * arrowheadScaleFactor,
+					  straightSectionLength = link.thickness / 4,
+					  x0 = link.source.x,
+					  x1 = x0 - arrowHeadLength / 2,
+					  x4 = link.target.x + link.target.width + straightSectionLength + arrowHeadLength,
+					  xi = d3.interpolateNumber(x0, x4),
+					  x2 = xi(curvature),
+					  x3 = xi(1 - curvature),
+					  y0 = link.source.y + link.sourceY + link.thickness / 2,
+					  y1 = link.target.y + link.targetY + link.thickness / 2;
+				  return "M" + x0 + "," + y0
+					   + "L" + x1 + "," + y0
+					   + "C" + x2 + "," + y0
+					   + " " + x3 + "," + y1
+					   + " " + x4 + "," + y1
+					   + "L" + (x4 - straightSectionLength) + "," + y1;
+				}
+
+				function link(d) {
+				  if (d.source.x < d.target.x) {
+					return leftToRightLink(d);
+				  }
+				  return rightToLeftLink(d);
+				}
+
+				link.curvature = function (_) {
+				  if (!arguments.length) { return curvature; }
+				  curvature = +_;
+				  return link;
+				};
+
+				return link;
+			  };
+
+			  biHiSankey.links = function (_) {
+				if (!arguments.length) { return links; }
+				links = _.filter(function (link) {
+				  return link.source !== link.target; // filter out links that go nowhere
+				});
+				return biHiSankey;
+			  };
+
+			  biHiSankey.linkSpacing = function (_) {
+				if (!arguments.length) { return linkSpacing; }
+				linkSpacing = +_;
+				return biHiSankey;
+			  };
+
+			  biHiSankey.nodes = function (_) {
+				if (!arguments.length) { return nodes; }
+				nodes = _;
+				return biHiSankey;
+			  };
+
+			  biHiSankey.nodeWidth = function (_) {
+				if (!arguments.length) { return nodeWidth; }
+				nodeWidth = +_;
+				return biHiSankey;
+			  };
+
+			  biHiSankey.nodeSpacing = function (_) {
+				if (!arguments.length) { return nodeSpacing; }
+				nodeSpacing = +_;
+				return biHiSankey;
+			  };
+
+			  biHiSankey.relayout = function () {
+				computeLeftAndRightLinks();
+				computeNodeValues();
+				computeLinkYPositions();
+				return biHiSankey;
+			  };
+
+			  biHiSankey.size = function (_) {
+				if (!arguments.length) { return size; }
+				size = _;
+				return biHiSankey;
+			  };
+
+			  biHiSankey.visibleLinks = function () {
+				return visible(links);
+			  };
+
+			  biHiSankey.initializeNodes = function (callback) {
+				initializeNodeMap();
+				computeNodeHierarchy();
+				computeNodeLinks();
+				computeAncestorLinks();
+				mergeLinks();
+				computeConnectedNodes();
+				nodes.forEach(callback);
+				return biHiSankey;
+			  };
+
+			  return biHiSankey;
+			};
+
+
+			'use strict';
+
+			var sankeyDiagramDiv, svg, tooltip, biHiSankey, path, defs, colorScale, isTransitioning;
+
+			var OPACITY = {
+				NODE_DEFAULT: 0.9,
+				NODE_FADED: 0.1,
+				NODE_HIGHLIGHT: 0.8,
+				LINK_DEFAULT: 0.6,
+				LINK_FADED: 0.05,
+				LINK_HIGHLIGHT: 0.9
+			  },
+			  LINK_COLOR = "#b3b3b3",
+			  INFLOW_COLOR = "#CC0000",
+			  OUTFLOW_COLOR = "#99CC00",
+			  NODE_WIDTH = 36,
+			  COLLAPSER = {
+				RADIUS: NODE_WIDTH / 2,
+				SPACING: 2
+			  },
+			  OUTER_MARGIN = 10,
+			  MARGIN = {
+				TOP: 2 * (COLLAPSER.RADIUS + OUTER_MARGIN),
+				RIGHT: OUTER_MARGIN,
+				BOTTOM: OUTER_MARGIN,
+				LEFT: OUTER_MARGIN
+			  },
+			  TRANSITION_DURATION = 400,
+			  HEIGHT = 2000 - MARGIN.TOP - MARGIN.BOTTOM,
+			  WIDTH = 960 - MARGIN.LEFT - MARGIN.RIGHT,
+			  LAYOUT_INTERATIONS = 32,
+			  REFRESH_INTERVAL = 7000;
+
+			var formatNumber = function (d) {
+			  var numberFormat = d3.format(",.0f"); // zero decimal places
+			  return  numberFormat(d) + " connections";
+			},
+
+			formatFlow = function (d) {
+			  var flowFormat = d3.format(",.0f"); // zero decimal places with sign
+			  return flowFormat(Math.abs(d));
+			},
+
+			// Used when temporarily disabling user interractions to allow animations to complete
+			disableUserInterractions = function (time) {
+			  isTransitioning = true;
+			  setTimeout(function(){
+				isTransitioning = false;
+			  }, time);
+			},
+
+			hideTooltip = function () {
+			  return tooltip.transition()
+				.duration(TRANSITION_DURATION)
+				.style("opacity", 0);
+			},
+
+			showTooltip = function () {
+			  return tooltip
+				.style("left", d3.event.pageX + "px")
+				.style("top", d3.event.pageY + 15 + "px")
+				.transition()
+				  .duration(TRANSITION_DURATION)
+				  .style("opacity", 1);
+			};
+
+			colorScale = d3.scale.category10(),
+
+			sankeyDiagramDiv =  d3.select("body").append("div").attr("class","sankeyDiagramDiv")
+			svg = sankeyDiagramDiv.append("svg")
+					.attr("width", WIDTH + MARGIN.LEFT + MARGIN.RIGHT)
+					.attr("height", HEIGHT + MARGIN.TOP + MARGIN.BOTTOM)
+				  .append("g")
+					.attr("transform", "translate(" + MARGIN.LEFT + "," + MARGIN.TOP + ")");
+
+			svg.append("g").attr("id", "links");
+			svg.append("g").attr("id", "nodes");
+			svg.append("g").attr("id", "collapsers");
+
+			tooltip = d3.select(".sankeyDiagramDiv").append("div").attr("id", "tooltip");
+
+			tooltip.style("opacity", 0)
+				.append("p")
+				  .attr("class", "value");
+
+			biHiSankey = d3.biHiSankey();
+
+			// Set the biHiSankey diagram properties
+			biHiSankey
+			  .nodeWidth(NODE_WIDTH)
+			  .nodeSpacing(10)
+			  .linkSpacing(4)
+			  .arrowheadScaleFactor(0.5) // Specifies that 0.5 of the link's stroke WIDTH should be allowed for the marker at the end of the link.
+			  .size([WIDTH, HEIGHT]);
+
+			path = biHiSankey.link().curvature(0.45);
+
+			defs = svg.append("defs");
+
+			defs.append("marker")
+			  .style("fill", LINK_COLOR)
+			  .attr("id", "arrowHead")
+			  .attr("viewBox", "0 0 6 10")
+			  .attr("refX", "1")
+			  .attr("refY", "5")
+			  .attr("markerUnits", "strokeWidth")
+			  .attr("markerWidth", "1")
+			  .attr("markerHeight", "1")
+			  .attr("orient", "auto")
+			  .append("path")
+				.attr("d", "M 0 0 L 1 0 L 6 5 L 1 10 L 0 10 z");
+
+			defs.append("marker")
+			  .style("fill", OUTFLOW_COLOR)
+			  .attr("id", "arrowHeadInflow")
+			  .attr("viewBox", "0 0 6 10")
+			  .attr("refX", "1")
+			  .attr("refY", "5")
+			  .attr("markerUnits", "strokeWidth")
+			  .attr("markerWidth", "1")
+			  .attr("markerHeight", "1")
+			  .attr("orient", "auto")
+			  .append("path")
+				.attr("d", "M 0 0 L 1 0 L 6 5 L 1 10 L 0 10 z");
+
+			defs.append("marker")
+			  .style("fill", INFLOW_COLOR)
+			  .attr("id", "arrowHeadOutlow")
+			  .attr("viewBox", "0 0 6 10")
+			  .attr("refX", "1")
+			  .attr("refY", "5")
+			  .attr("markerUnits", "strokeWidth")
+			  .attr("markerWidth", "1")
+			  .attr("markerHeight", "1")
+			  .attr("orient", "auto")
+			  .append("path")
+				.attr("d", "M 0 0 L 1 0 L 6 5 L 1 10 L 0 10 z");
+
+			function update() {
+			  var link, linkEnter, node, nodeEnter, collapser, collapserEnter;
+
+			  function dragmove(node) {
+				node.x = Math.max(0, Math.min(WIDTH - node.width, d3.event.x));
+				node.y = Math.max(0, Math.min(HEIGHT - node.height, d3.event.y));
+				d3.select(this)
+					.attr("transform", "translate(" + node.x + "," + node.y + ")")
+					.style("cursor", "grabbing")
+				biHiSankey.relayout();
+				svg.selectAll(".sankeyNode").selectAll("rect").attr("height", function (d) { return d.height; });
+				link.attr("d", path);
+			  }
+
+			  function containChildren(node) {
+				node.children.forEach(function (child) {
+				  child.state = "contained";
+				  child.parent = this;
+				  child._parent = null;
+				  containChildren(child);
+				}, node);
+			  }
+
+			  function expand(node) {
+				node.state = "expanded";
+				node.children.forEach(function (child) {
+				  child.state = "collapsed";
+				  child._parent = this;
+				  child.parent = null;
+				  containChildren(child);
+				}, node);
+			  }
+
+			  function collapse(node) {
+				node.state = "collapsed";
+				containChildren(node);
+			  }
+
+			  function restoreLinksAndNodes() {
+				link
+				  .style("stroke", LINK_COLOR)
+				  .style("marker-end", function () { return 'url(#arrowHead)'; })
+				  .transition()
+					.duration(TRANSITION_DURATION)
+					.style("opacity", OPACITY.LINK_DEFAULT);
+				
+
+				node
+				  .selectAll("rect")
+					.style("fill", function (d) {
+					  d.color = colorScale(d.name.replace(/ .*/, ""));
+					  return d.color;
+					})
+					.style("stroke", function (d) {
+					  return d3.rgb(colorScale(d.name.replace(/ .*/, ""))).darker(0.1);
+					})
+					.style("fill-opacity", OPACITY.NODE_DEFAULT);
+
+				node.filter(function (n) { return n.state === "collapsed"; })
+				  .transition()
+					.duration(TRANSITION_DURATION)
+					.style("opacity", OPACITY.NODE_DEFAULT);
+			  }
+
+			  function showHideChildren(node) {
+				disableUserInterractions(2 * TRANSITION_DURATION);
+				hideTooltip();
+				if (node.state === "collapsed") { expand(node); }
+				else { collapse(node); }
+
+				biHiSankey.relayout();
+				update();
+				link.attr("d", path);
+				restoreLinksAndNodes();
+			  }
+
+			  function highlightConnected(g) {
+				link.filter(function (d) { return d.source === g; })
+				  .style("marker-end", function () { return 'url(#arrowHeadInflow)'; })
+				  .style("stroke", OUTFLOW_COLOR)
+				  .style("opacity", OPACITY.LINK_DEFAULT);
+
+				link.filter(function (d) { return d.target === g; })
+				  .style("marker-end", function () { return 'url(#arrowHeadOutlow)'; })
+				  .style("stroke", INFLOW_COLOR)
+				  .style("opacity", OPACITY.LINK_DEFAULT);
+				  
+				link.forEach(function (aLink) {
+				  aLink.moveToFront;
+				});
+			  }
+
+			  function fadeUnconnected(g) {
+				link.filter(function (d) { return d.source !== g && d.target !== g; })
+				  .style("marker-end", function () { return 'url(#arrowHead)'; })
+				  .transition()
+					.duration(TRANSITION_DURATION)
+					.style("opacity", OPACITY.LINK_FADED);
+
+				node.filter(function (d) {
+				  return (d.name === g.name) ? false : !biHiSankey.connected(d, g);
+				}).transition()
+				  .duration(TRANSITION_DURATION)
+				  .style("opacity", OPACITY.NODE_FADED);
+			  }
+
+			  link = svg.select("#links").selectAll("path.link")
+				.data(biHiSankey.visibleLinks(), function (d) { return d.id; });
+
+			  link.transition()
+				.duration(TRANSITION_DURATION)
+				.style("stroke-WIDTH", function (d) { return Math.max(1, d.thickness); })
+				.attr("d", path)
+				.style("opacity", OPACITY.LINK_DEFAULT);
+
+
+			  link.exit().remove();
+
+
+			  linkEnter = link.enter().append("path")
+				.attr("class", "link")
+				.style("fill", "none");
+
+			  linkEnter.on('mouseenter', function (d) {
+				if (!isTransitioning) {
+				  showTooltip().select(".value").text(function () {
+					if (d.direction > 0) {
+					  return d.source.name + " → " + d.target.name + "\n" + formatNumber(d.value);
+					}
+					return d.target.name + " ← " + d.source.name + "\n" + formatNumber(d.value);
+				  });
+
+				  d3.select(this)
+					.style("stroke", LINK_COLOR)
+					.transition()
+					  .duration(TRANSITION_DURATION / 2)
+					  .style("opacity", OPACITY.LINK_HIGHLIGHT);
+				}
+			  });
+
+			  linkEnter.on('mouseleave', function () {
+				if (!isTransitioning) {
+				  hideTooltip();
+
+				  d3.select(this)
+					.style("stroke", LINK_COLOR)
+					.transition()
+					  .duration(TRANSITION_DURATION / 2)
+					  .style("opacity", OPACITY.LINK_DEFAULT);
+				}
+			  });
+			  
+			  
+				function showLinkTree(aLink,aVarCategory)
+				{
+					var name_tmp = "Variable flow: " + aLink.__data__.source.name +  "  →  " + aLink.__data__.target.name
+					var theSchema = currentGraph.variableSchemes[aVarCategory];
+					createTreeLayout(name_tmp,theSchema,aLink.__data__.name,link);
+				}
+				
+				function showEdgeTable(aLink)
+				{						
+                    
+                    var headLine = "Edge Information (" + aLink.from + " - " + aLink.to + ")";
+					var anEdgeNameSplit = aLink.name.split(',')
+					var numberOfconnections = anEdgeNameSplit.length;
+					var dimension=0;
+					var nullDim=false;
+					var undefinedLeafs;
+					var theLeafNodes = JSON.parse(JSON.stringify(currentGraph.variableSchemes[varCategories[0].name]));
+					var pipeData = aLink.name;
+					prune_tree(pipeData,theLeafNodes)
+					var undefLeafsNumber=0;
+					var defLeafsNumber=0;
+					for (var k=0;k<theLeafNodes.length;k++)
+					{
+						if (theLeafNodes[k].dimension!=null){dimension = dimension+theLeafNodes[k].dimension}
+						else{nullDim=true}
+						if (theLeafNodes[k].value.includes("could not be found")||theLeafNodes[k].value.includes("unknown"))
+						{
+							if (undefLeafsNumber==0){undefinedLeafs += theLeafNodes[k].xPath;}
+							else {undefinedLeafs += "," + theLeafNodes[k].xPath;}
+							undefLeafsNumber ++;
+						}
+						else
+						{
+							defLeafsNumber++;
+						}
+					}		
+					//Render data for table
+					var data = [];
+					data.push({ "name" : "Total number of connections", "value" : numberOfconnections })
+					data.push({ "name" : "Number of referenced connections", "value" : defLeafsNumber })
+					data.push({ "name" : "Dimension of referenced connections", "value" : String(dimension) })
+					if (undefinedLeafs)
+					{
+						data.push({ "name" : "Number of unreferenced connections", "value" :  undefLeafsNumber})					
+					}
+                    
+                    
+                    
+                    var d3_body = d3.select("body");
+                    
+                    var panel_div = d3_body.append("div").attr("class", "myPanel panel-default")
+                    panel_div.append("div").attr("class","panel-heading")
+                        .append("div").attr("class","panel_title").append("h4").text(headLine)
+                    var listGroup = panel_div.append("div").attr("class","panel-body")
+                        .append("table").attr("id","myTable")
+                        .append("tbody")
+                        
+                    data.forEach(function(listElement)
+                    {
+                        var row = listGroup.append("tr")
+                        row.append("td").text(listElement.name)
+                        row.append("td").text(listElement.value)
+                        
+                    })
+                    $('.myPanel').lobiPanel({
+                            reload: false,
+                            editTitle: false,
+                            expand: false,
+                            unpin: false,
+                            resize: "none",
+                            minWidth: 200,
+                            minHeight: 200,
+                            maxWidth: 1100,
+                            maxHeight: 1200,
+                        });
+                    $('.myPanel').lobiPanel('unpin');
+				}
+				
+				//linkMenu --> functions for right click options
+				var linkChildrenItems = [];
+				for (var j=0; j< varCategories.length; j++)
+				{
+					linkChildrenItems.push({title: 'according to ' + varCategories[j].description,
+											varCategory: varCategories[j].name,
+											onMouseClick: function(elm, data, i) {showLinkTree(elm,data.varCategory)},
+											onMouseOver: function(elm,data,i){}});
+				}
+				var linkMenu = [
+				{
+					title: 'Show edge info',
+					onMouseDown: function(elm, k, i) {
+						showEdgeTable(k)
+					},
+					onMouseUp: function(elm, k, i) {
+					},
+					onMouseOver: function(elm, d, i) {
+					},
+					childrenItems: []
+				},
+				{
+					title: 'Show variable tree...',
+					onMouseDown: function(elm, k, i) {
+					},
+					onMouseUp: function(elm, k, i) {
+					},
+					onMouseOver: function(elm, d, i) {
+					},
+					childrenItems: linkChildrenItems
+				}
+				]
+
+				var thisLink = d3.select(this);
+				linkEnter.on('contextmenu', d3.contextMenu(linkMenu))
+
+			  linkEnter.sort(function (a, b) { return b.thickness - a.thickness; })
+				.classed("leftToRight", function (d) {
+				  return d.direction > 0;
+				})
+				.classed("rightToLeft", function (d) {
+				  return d.direction < 0;
+				})
+				.style("marker-end", function () {
+				  return 'url(#arrowHead)';
+				})
+				.style("stroke", LINK_COLOR)
+				.style("opacity", 0)
+				.transition()
+				  .delay(TRANSITION_DURATION)
+				  .duration(TRANSITION_DURATION)
+				  .attr("d", path)
+				  .style("stroke-WIDTH", function (d) { return Math.max(1, d.thickness); })
+				  .style("opacity", OPACITY.LINK_DEFAULT);
+
+
+			  node = svg.select("#nodes").selectAll(".sankeyNode")
+				  .data(biHiSankey.collapsedNodes(), function (d) { return d.id; });
+
+
+			  node.transition()
+				.duration(TRANSITION_DURATION)
+				.attr("transform", function (d) { return "translate(" + d.x + "," + d.y + ")"; })
+				.style("opacity", OPACITY.NODE_DEFAULT)
+				.select("rect")
+				  
+				  .style("stroke", function(d) { 
+					  return d3.rgb(d.color).darker(2); })
+				  .style("stroke-WIDTH", "1px")
+				  .attr("height", function (d) { return d.height; })
+				  .attr("width", biHiSankey.nodeWidth());
+
+
+			  node.exit()
+				.transition()
+				  .duration(TRANSITION_DURATION)
+				  .attr("transform", function (d) {
+					var collapsedAncestor, endX, endY;
+					collapsedAncestor = d.ancestors.filter(function (a) {
+					  return a.state === "collapsed";
+					})[0];
+					endX = collapsedAncestor ? collapsedAncestor.x : d.x;
+					endY = collapsedAncestor ? collapsedAncestor.y : d.y;
+					return "translate(" + endX + "," + endY + ")";
+				  })
+				  .remove();
+
+
+			  nodeEnter = node.enter().append("g").attr("class", "sankeyNode");
+
+			  nodeEnter
+				.attr("transform", function (d) {
+				  var startX = d._parent ? d._parent.x : d.x,
+					  startY = d._parent ? d._parent.y : d.y;
+				  return "translate(" + startX + "," + startY + ")";
+				})
+				.style("opacity", 1e-6)
+				.transition()
+				  .duration(TRANSITION_DURATION)
+				  .style("opacity", OPACITY.NODE_DEFAULT)
+				  .attr("transform", function (d) { return "translate(" + d.x + "," + d.y + ")"; });
+
+			  nodeEnter.append("text");
+			  nodeEnter.append("rect")
+				.style("fill", function(d) { 
+					  return d.color = colorScale(d.name.replace(/ .*/, "")); })
+				  .style("stroke", function(d) { 
+					  return d3.rgb(d.color).darker(2); })
+				.style("stroke-WIDTH", "1px")
+				.attr("height", function (d) { return d.height; })
+				.attr("width", biHiSankey.nodeWidth());
+				
+			  node.append("svg:title").text("Click left to drag, click right to inspect")
+			  node.on("mouseenter", function (g) {
+				if (!isTransitioning) {
+				  restoreLinksAndNodes();
+				  highlightConnected(g);
+				  fadeUnconnected(g);
+
+				  d3.select(this).select("rect")
+					.style("stroke", function (d) {
+					  return d3.rgb(d.color).darker(0.1);
+					})
+					.style("fill-opacity", OPACITY.LINK_DEFAULT);
+
+				  tooltip
+					.style("left", g.x + MARGIN.LEFT + "px")
+					.style("top", d3.event.pageY-40 + "px")
+					.transition()
+					  .duration(TRANSITION_DURATION)
+					  .style("opacity", 1).select(".value")
+					  .text(function () {
+						var additionalInstructions = g.children.length ? "\n(Double click to expand)" : "";
+						return g.name + "\nInputs: " + formatFlow(g.inputs) + "\nOutputs: " + formatFlow(g.outputs);
+					  });
+				}
+			  });
+
+			  node.on("mouseleave", function () {
+				if (!isTransitioning) {
+				  hideTooltip();
+				  restoreLinksAndNodes();
+				}
+			  });
+
+			  node.filter(function (d) { return d.children.length; })
+				.on("dblclick", showHideChildren);
+				
+				
+				//aigner: Right click options for tools
+				//##############################################################################################################################
+				
+				//aigner: Table for competence/tool information
+				//############################################################
+				function showToolTable(aTool)
+                {
+                    var aToolNameSplit = aTool.name.split(': ')			
+                    var headLine;
+                    if (aToolNameSplit.length>1){headLine = "Competence Information: (" + aToolNameSplit[1] + ")";}
+                    else {headLine = "Competence Information: (" + aToolNameSplit[0] + ")";}
+                    
+                    
+                    var data = [];
+                    // render the table(s)
+                    if (aTool.metadata.length==0)
+                    {
+                        data.push({ "name" : "NO TOOL METADATA AVAILABLE", "value" : "..." })
+                    }
+                    function findSubMetaData(aMetaData)
+                    {
+                        for(var key in aMetaData)
+                        {
+                            if (typeof aMetaData[key] === 'object')
+                            {
+                                data.push({ "name" : key, "value" : ''}) ;
+                                findSubMetaData(aMetaData[key]);
+                            }
+                            else
+                            {
+                                data.push({ "name" : key, "value" : aMetaData[key] })
+                            }
+                        }
+                    }
+                    for (var j=0; j < aTool.metadata.length;j++)
+                    {
+                        var metaData = aTool.metadata[j];
+                        findSubMetaData(metaData);						
+                    }
+                
+                    
+                    var d3_body = d3.select("body");
+                    
+                    var panel_div = d3_body.append("div").attr("class", "myPanel panel-default")
+                    panel_div.append("div").attr("class","panel-heading")
+                        .append("div").attr("class","panel_title").append("h4").text(headLine)
+                    var listGroup = panel_div.append("div").attr("class","panel-body")
+                        .append("table").attr("id","myTable")
+                        .append("tbody")
+                        
+                    data.forEach(function(listElement)
+                    {
+                        var row = listGroup.append("tr")
+                        row.append("td").text(listElement.name)
+                        row.append("td").text(listElement.value)
+                        
+                    })
+                    $('.myPanel').lobiPanel({
+                            reload: false,
+                            editTitle: false,
+                            expand: false,
+                            unpin: false,
+                            resize: "none",
+                            minWidth: 200,
+                            minHeight: 200,
+                            maxWidth: 1100,
+                            maxHeight: 1200,
+                        });
+                    $('.myPanel').lobiPanel('unpin');
+                }
+				//############################################################
+				
+				//aigner: Creation of input/output tree
+				//############################################################
+				function showIOTree(categoryID, categoryDescr, theNode, io)
+				{	
+					var links = d3.selectAll(".link");
+					var array="";
+					var name_tmp = "";
+					links.each(function(theLink)
+					{		
+						if (io=="in")
+						{
+							if (theLink.to == theNode.id)
+							{
+								array = array + "," + theLink.name;
+							}
+							name_tmp = "Input tree view:" + theNode.id + "; Categorization: " + categoryDescr;
+						}
+						else if (io=="out")
+						{
+							if (theLink.from == theNode.id)
+							{
+								array = array + "," + theLink.name;
+							}
+							name_tmp = "Output tree view:" + theNode.id + "; Categorization: " + categoryDescr;
+						}
+					})
+					
+					var theSchema = currentGraph.variableSchemes[categoryID];
+					createTreeLayout(name_tmp,theSchema,array,link)
+				}
+				//############################################################
+
+				var inputChildrenitems = [];
+				var outputChildrenitems = [];
+				var inputChildrenitems = [];
+				var outputChildrenitems = [];
+				for (var j=0; j< varCategories.length; j++)
+				{
+					inputChildrenitems.push({title: 'according to ' + varCategories[j].description,
+											 varCategory: varCategories[j].name,
+											 description: varCategories[j].description,
+											 onMouseClick: function(elm, data, i) {showIOTree(data.varCategory,data.description,elm.__data__,"in")},
+											 onMouseOver: function(elm,data,i){}});
+					outputChildrenitems.push({title: 'according to ' + varCategories[j].description,
+											 varCategory: varCategories[j].name,
+											 description: varCategories[j].description,
+											 onMouseClick: function(elm, data, i) {showIOTree(data.varCategory,data.description,elm.__data__,"out")},
+											 onMouseOver: function(elm,data,i){}});
+				}
+				//menu --> functions for right click options
+				var toolMenu = [
+				{
+					title: 'Show competence info',
+					onMouseDown: function(elm, k, i) {
+						showToolTable(k);
+					},
+					onMouseUp: function(elm, k, i) {
+					},
+					onMouseOver: function(elm, d, i) {
+					},
+					childrenItems: []
+				},
+				{
+					title: 'Show input variable tree...',
+					onMouseDown: function(elm, k, i) {
+					},
+					onMouseUp: function(elm, k, i) {
+					},
+					onMouseOver: function(elm, d, i) {
+					},
+					childrenItems: inputChildrenitems
+				},
+				{
+					title: 'Show output variable tree...',
+					onMouseDown: function(elm, k, i) {
+					},
+					onMouseUp: function(elm, k, i) {
+					},
+					onMouseOver: function(elm, d, i) {
+					},
+					childrenItems: outputChildrenitems
+				}
+				]
+				//##############################################################################################################################
+				
+				node.on('contextmenu', d3.contextMenu(toolMenu));
+				
+			  // allow nodes to be dragged to new positions
+			  node.call(d3.behavior.drag()
+				.origin(function (d) 
+				{ 
+					 d3.select(this).style("cursor", "grabbing")	
+					return d; 
+				})
+				.on("dragstart", function () {
+					d3.select(this).style("cursor", "grabbing")	
+					this.parentNode.appendChild(this); })
+				.on("drag", dragmove));
+
+			  // add in the text for the nodes
+			  node.filter(function (d) { return d.value !== 0; })
+				.select("text")
+				  .attr("x", -6)
+				  .attr("y", function (d) { return d.height / 2; })
+				  .attr("dy", ".35em")
+				  .attr("text-anchor", "end")
+				  .attr("transform", null)
+				  .text(function (d) { return d.name; })
+				.filter(function (d) { return d.x < WIDTH / 2; })
+				  .attr("x", 6 + biHiSankey.nodeWidth())
+				  .attr("text-anchor", "start");
+
+
+			  collapser = svg.select("#collapsers").selectAll(".collapser")
+				.data(biHiSankey.expandedNodes(), function (d) { return d.id; });
+
+
+			  collapserEnter = collapser.enter().append("g").attr("class", "collapser");
+
+			  collapserEnter.append("circle")
+				.attr("r", COLLAPSER.RADIUS)
+				.style("fill", function (d) {
+				  d.color = colorScale(d.name.replace(/ .*/, ""));
+				  return d.color;
+				});
+
+			  collapserEnter
+				.style("opacity", OPACITY.NODE_DEFAULT)
+				.attr("transform", function (d) {
+				  return "translate(" + (d.x + d.width / 2) + "," + (d.y + COLLAPSER.RADIUS) + ")";
+				});
+
+			  collapserEnter.on("dblclick", showHideChildren);
+
+			  collapser.select("circle")
+				.attr("r", COLLAPSER.RADIUS);
+
+			  collapser.transition()
+				.delay(TRANSITION_DURATION)
+				.duration(TRANSITION_DURATION)
+				.attr("transform", function (d, i) {
+				  return "translate("
+					+ (COLLAPSER.RADIUS + i * 2 * (COLLAPSER.RADIUS + COLLAPSER.SPACING))
+					+ ","
+					+ (-COLLAPSER.RADIUS - OUTER_MARGIN)
+					+ ")";
+				});
+
+			  collapser.on("mouseenter", function (g) {
+				if (!isTransitioning) {
+				  showTooltip().select(".value")
+					.text(function () {
+					  return g.name + "\n(Double click to collapse)";
+					});
+
+				  d3.select(this)
+					.style("opacity", OPACITY.NODE_HIGHLIGHT)
+					.select("circle")
+
+				  node.filter(function (d) {
+					return d.ancestors.indexOf(g) >= 0;
+				  }).style("opacity", OPACITY.NODE_HIGHLIGHT)
+					.select("rect")
+				}
+			  });
+
+			  collapser.on("mouseleave", function (g) {
+				if (!isTransitioning) {
+				  hideTooltip();
+				  d3.select(this)
+					.style("opacity", OPACITY.NODE_DEFAULT)
+					.select("circle")
+
+				  node.filter(function (d) {
+					return d.ancestors.indexOf(g) >= 0;
+				  }).style("opacity", OPACITY.NODE_DEFAULT)
+					.select("rect")
+				}
+			  });
+
+			  collapser.exit().remove();
+
+			}
+
+
+			function createTreeLayout(theName,schema,theLinks,theAllLinks)
+			{	
+                //aigner: Build the tree layout
+                //######################################################################
+				var treeData = (JSON.parse(JSON.stringify(schema)));
+                //The tree will only be pruned if there is pipeData, such as in an edge or for the input of a tool
+                if (theLinks)
+                {
+                    prune_tree(theLinks, treeData);
+                }
+                
+                //build tree layout for vistoms
+                var newTree = {};
+                buildTree(newTree, treeData)                    
+                treeData = newTree
+               //######################################################################
+               
+               
+				var width= 1000;
+				var height= 500;
+				var xOffset = 10;
+				var xOffset2 = 100;	
+				
+				// Calculate total nodes, max label length
+				var totalNodes = 0;
+				var maxLabelLength = 0;
+				// variables for drag/drop
+				var selectedNode = null;
+				var draggingNode = null;
+				// Misc. variables
+				var i = 0;
+				var duration = 500;
+				var root;
+				
+
+				// size of the diagram
+				var viewerWidth = width/3;
+				var viewerHeight = height+50;
+
+				var tree = d3.layout.tree()
+					.size([viewerHeight, viewerWidth])
+
+				// define a d3 diagonal projection for use by the node paths later on.
+				var diagonal = d3.svg.diagonal()
+					.projection(function(d) {
+						return [d.y+xOffset, d.x];
+					});
+
+				// A recursive helper function for performing some setup by walking through all nodes
+
+				function visit(parent, visitFn, childrenFn) {
+					if (!parent) return;
+
+					visitFn(parent);
+
+					var children = childrenFn(parent);
+					if (children) {
+						var count = children.length;
+						for (var i = 0; i < count; i++) {
+							visit(children[i], visitFn, childrenFn);
+						}
+					}
+				}
+
+				// Call visit function to establish maxLabelLength
+				visit(treeData, function(d) {
+					totalNodes++;
+					maxLabelLength = Math.max(d.name.length, maxLabelLength);
+				}, function(d) {
+					return d.children && d.children.length > 0 ? d.children : null;
+				});
+				
+				function getMaxLength(data)
+				{
+					var maxLen=0;;
+					for (var i = 0; i < data.length; i++)
+					{
+						maxLen = Math.max(data[i].name.length, maxLen);
+					}
+					for (var i = 0; i < data.length; i++)
+					{
+						data[i].labelLength = maxLen;
+						if (data[i].children)
+						{getMaxLength(data[i].children);}
+						if (data[i]._children)
+						{getMaxLength(data[i]._children);}
+					}
+					
+				}
+				if(treeData._children)
+				{getMaxLength(treeData._children);}
+				if(treeData.children)
+				{getMaxLength(treeData.children);}
+				treeData.labelLength = treeData.name.length;
+
+
+				// Collapse the node and all it's children
+				function collapse(d) {
+				  if(d.children) {
+					d._children = d.children
+					d._children.forEach(collapse)
+					d.children = null
+				  }
+				}
+				// Collapse the node and all it's children
+				function expand(d) {
+				  if(d._children) {
+					d.children = d._children
+					d.children.forEach(expand)
+					d._children = null
+				  }
+				}
+				// Toggle children on click.
+				function click(d) 
+				{
+					if (d.children) {
+						d._children = d.children;
+						d.children = null;
+					} else 
+					{
+						d.children = d._children;
+						d._children = null;
+					}
+					update(d,theAllLinks);
+				}
+				// Collapse/expand entire tree on double-click
+				function dblclick(d) 
+				{
+					if(d.children) 
+					{
+						collapse(d);
+					}
+					else if(d._children)
+					{
+						expand(d);
+					}
+					update(d,theAllLinks);
+				}	
+
+				
+				//aigner: Here the tree layout is created
+				var d3_body = d3.select("body")
+                var lobiID = String(getRandomInt(0,1000))
+                var divClassName = "treeDiv"+lobiID
+                var treeLayoutdiv = d3_body.append("div").attr("class",divClassName+" panel-default")
+                                                .style("left","200px")
+                                                .style("top","200px")
+                                                .style("position", "absolute")
+                treeLayoutdiv.append("div").attr("class","panel-heading")
+                    .append("div").attr("class","panel_title").append("h4").text(theName)
+                $('.'+divClassName).lobiPanel({
+                    reload: false,
+                    editTitle: false,
+                    unpin: false,
+                    minWidth: 200,
+                    maxWidth: 100000,
+                    minHeight: 200,
+                    maxHeight: 100000,
+                });
+                $('.'+divClassName).lobiPanel('unpin');
+										
+				var treeLayoutSVG = treeLayoutdiv.append("svg").attr("class","treeLayoutSVG")
+				var treeGroup = treeLayoutSVG.append("g").attr("class","treeGroup").style("position","absolute")
+								.attr("transform", "translate(50,0)");
+				var margin = {top: 20, right: 90, bottom: 20, left: 90},
+							  width = 960 - margin.left - margin.right,
+							  height = 500 - margin.top - margin.bottom;
+
+				// append the svg object to the body of the page
+				// appends a 'group' element to 'svg'
+				// moves the 'group' element to the top left margin
+				var offset_tmp = 60;
+				treeLayoutSVG = treeLayoutSVG.attr("width", width + 1.2*margin.right + margin.left+offset_tmp)
+						 .attr("height", height + margin.top + margin.bottom+offset_tmp);
+				treeLayoutdiv = treeLayoutdiv.attr("width", width + 1.2*margin.right + margin.left+offset_tmp)
+						 .attr("height", height + margin.top + margin.bottom+offset_tmp)
+						 .on("mouseover",function(){d3.select(this).style("cursor", "grab")})
+				treeGroup = treeGroup
+					.attr("width", width + margin.right + margin.left)
+					.attr("height", height + margin.top + margin.bottom);
+					
+                
+                var frame = treeGroup.append("rect")
+					.attr("class","treeFrame")
+					.attr("stroke-width", 1)
+					.attr("stroke", "white")
+					.attr("fill-opacity", .8);				
+				
+				// Define the root
+				root = treeData;
+				root.x0 = 0;
+				root.y0 = 0;
+				
+				// Append a group which holds all nodes and which the zoom Listener can act upon.
+				var svgGroup_xOff = root.name.length*10+50
+				var svgGroup = treeGroup.append("g")
+					.attr("class","tree_"+theName)
+					.attr("transform", "translate("+ svgGroup_xOff + "," + String(margin.top+10) + ")");
+				
+				collapse(root);
+				update(root,theAllLinks);
+				
+
+				function update(source,allLinks) 
+				{
+					// Compute the new height, function counts total children of root node and sets tree height accordingly.
+					// This prevents the layout looking squashed when new nodes are made visible or looking sparse when nodes are removed
+					// This makes the layout more consistent.
+					var levelWidth = [1];
+					var levelLength = [1];
+					var childCount = function(level, n) {
+
+						if (n.children && n.children.length > 0) {
+							if (levelWidth.length <= level + 1) levelWidth.push(0);
+							
+							levelWidth[level + 1] += n.children.length;
+							n.children.forEach(function(d) {
+								childCount(level + 1, d);
+							});
+						}
+					};
+					childCount(0, root);
+
+					var newHeight = d3.max(levelWidth) * 60; // 20 pixels per line
+					var newWidth = viewerWidth+300;
+					
+					//BENNI: fill in viewerHeight instead of newHeight for other expanding/collapsing beaviour
+					tree = tree.size([newHeight, newWidth]);
+					
+					frame = frame.attr("width",newWidth)
+						.attr("height",newHeight+60)
+						.attr("fill","white");
+						
+					
+					
+					// Compute the new tree layout.
+					var nodes = tree.nodes(root),
+						links = tree.links(nodes);
+						
+						
+					//aigner: count all descendants of a node
+					function countDescendants(node, counter) 
+					{
+						if (node._children)
+						{
+							node._children.forEach(function(n)
+							{
+								counter = countDescendants(n, counter);
+							});
+						}
+						else if (node.children)
+						{
+							node.children.forEach(function(n)
+							{
+								counter = countDescendants(n, counter);
+							});
+						}
+						else
+						{
+							counter ++;
+						}
+						return counter;
+					}
+					
+					
+					var depths = [];
+					var labelLength = [];
+					nodes.forEach(function(d) 
+					{				
+						//aigner: If node is collapsed show number of ancestors
+						if (d._children)
+						{
+							d._childrenNum = countDescendants(d, 0);
+							d.text = d.name + " (" + d._childrenNum + ")";
+						}
+						else 
+						{
+							d.text = d.name
+						}
+						
+						//aigner: Find maximum labelLength for each level
+						if (!depths.includes(d.depth))
+						{
+							depths.push(d.depth);
+							labelLength.push(d.text.length);
+						}
+						else
+						{
+							if (d.depth!=0){labelLength[depths.indexOf(d.depth)] = Math.max(d.text.length, labelLength[depths.indexOf(d.depth)]);}
+						}
+					});
+					// Set widths between levels based on labelLength of each level.
+					var newWidth=0;	
+					var depth_tmp = 0;			
+					nodes.forEach(function(d) 
+					{
+						if (d.parent)
+						{
+							d.y = d.parent.y+(labelLength[depths.indexOf(d.depth)])*10+50;
+						}
+						else{d.y=0}
+						
+						
+						if (newWidth<d.y)
+						{newWidth=d.y;}
+						
+						// console.log("##############")
+						// console.log(d.name)
+						// console.log("x = " + d.x)
+						// console.log("y = " + d.y)
+						// console.log("depth = " + depths.indexOf(d.depth))
+						// console.log("##############")
+					});	
+					
+					
+					
+                    newWidth=Math.max(newWidth,getTextWidth(theName,"Arial 12pt"));
+					//aigner: Adjust height and width of the frame
+					$('.'+divClassName).lobiPanel('setWidth', newWidth + margin.top + margin.bottom +400+maxLabelLength*25+offset_tmp);
+                    $('.'+divClassName).lobiPanel('setHeight', newHeight + margin.top + 2*margin.bottom+offset_tmp);
+					treeLayoutSVG = treeLayoutSVG.attr("height", newHeight + margin.top + margin.bottom+offset_tmp)
+					treeLayoutSVG = treeLayoutSVG.attr("width", newWidth + margin.top + margin.bottom +300+maxLabelLength*25+offset_tmp)
+					frame = frame.attr("height", newHeight + margin.top + margin.bottom)
+					frame = frame.attr("width", newWidth + margin.top + margin.bottom+300+maxLabelLength*15)
+
+                    
+					function showVariableTable(aVariable)
+					{											
+                        var headLine = "Node Information (" + aVariable.name + ")";
+						var data = [];
+						// render the table(s)
+                        data.push({ "name" : "Name", "value" : "\""+aVariable.name+"\"" })
+                        data.push({ "name" : "xPath", "value" : aVariable.xPath })
+						if (aVariable.type){data.push({ "name" : "Type", "value" : aVariable.type })}
+						if (aVariable.level){data.push({ "name" : "Level", "value" : aVariable.level })}
+						if (aVariable.children || aVariable._children)
+						{
+							var childrenNum=0;
+							if (aVariable.children){childrenNum=childrenNum+aVariable.children.length}
+							if (aVariable._children){childrenNum=childrenNum+aVariable._children.length}
+							data.push({ "name" : "Number of children", "value" : childrenNum })
+						}
+						if (aVariable.dimension){data.push({ "name" : "Dimension", "value" : aVariable.dimension })}
+						else if(aVariable.dimension===null){data.push({ "name" : "Dimension", "value" : "undefined" })}
+						if (aVariable.value){data.push({ "name" : "Value(s)", "value" : aVariable.value })}
+						
+                        var d3_body = d3.select("body");
+                        
+                        var panel_div = d3_body.append("div").attr("class", "myPanel panel-default")
+                        panel_div.append("div").attr("class","panel-heading")
+                            .append("div").attr("class","panel_title").append("h4").text(headLine)
+                        var listGroup = panel_div.append("div").attr("class","panel-body")
+                            .append("table").attr("id","myTable")
+                            .append("tbody")
+                            
+                        data.forEach(function(listElement)
+                        {
+                            var row = listGroup.append("tr")
+                            row.append("td").text(listElement.name)
+                            row.append("td").text(listElement.value)
+                            
+                        })
+                        $('.myPanel').lobiPanel({
+                            reload: false,
+                            editTitle: false,
+                            expand: false,
+                            unpin: false,
+                            resize: "none",
+                            minWidth: 200,
+                            minHeight: 200,
+                            maxWidth: 1100,
+                            maxHeight: 1200,
+                        });
+                        $('.myPanel').lobiPanel('unpin');
+					}
+					
+					//Highlight function, that shows usage of a node in the XDSM
+					function highlight(data,aText)
+					{
+						aText = "/"+data.name+aText;
+						if (data.parent){highlight(data.parent,aText)}
+						else
+						{
+							var allLinks_tmp = allLinks[0];
+							allLinks_tmp.forEach(function(p) {
+								var firstElement_tmp = p.__data__.name.split("/")[1]
+								var text_fromFirst = "/"+firstElement_tmp+aText.split(firstElement_tmp)[1]
+								if (include(p.__data__.name,text_fromFirst))
+								{
+									d3.select(p).style("opacity", .8);			
+								}
+								else
+								{
+									d3.select(p).style("opacity", 0);			
+								}
+							});
+						}
+					}
+					
+					//Function writeTreeToXML goes through tree nodes and puts the into an xml document
+					function writeTreeToXML(aNode,anXMLDoc,anXPath)
+					{
+						//Variable "children" 
+						//--> One children variable, no matter whether a node has "_children" (collapsed) or "children" (expanded)
+						var children;
+						if (aNode._children){children = aNode._children;}
+						else if (aNode.children){children = aNode.children;}
+						
+						//Get current xml element with its xPath
+						var element = anXMLDoc.evaluate(anXPath,anXMLDoc, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null ).singleNodeValue;
+						if (element != null) {element.value = '...';}
+						
+						//If a node has children (collapsed or expanded), loop through them
+						if (children)
+						{
+							for (var i=0; i < children.length;i++)
+							{
+								//Name of the new XML element --> childName
+								var child = children[i];
+								var childName = child.name.split(/[\[\]]+/);//Split childName at "[]" which is the uID 
+								var cleanChildName = childName[0].split(/[\+\*\^\-\ \#]+/);//Split childName all special characters
+								var newNode = anXMLDoc.createElement(String(cleanChildName[0]));
+								
+								//The children are appended to the xPath --> newXPath
+								var newXPath = anXPath+"/"+cleanChildName[0];
+								
+								//If childName contains a uID, make the uID an attribute
+								if (childName[1])
+								{
+									if (parseInt(childName[1]))
+									{
+										var dummyID = childName[1];
+										newNode.setAttribute("dummyID", dummyID)
+										newXPath = newXPath+"[@dummyID='"+dummyID+"']";
+									}
+									else
+									{
+										var uID = childName[1];
+										newNode.setAttribute("uID", uID)
+										newXPath = newXPath+"[@uID='"+uID+"']";
+									}
+								}
+								if (cleanChildName.length>1) {newNode.setAttribute("elementName", childName[0])};
+								
+								//Append the newNode to the xml structure
+								element.appendChild(newNode);
+								
+								
+								
+								////aigner: Sorting of XML elements according to "uID"
+								// var items = element.children;
+								// var itemsArr = [];
+								// for (var j in items) {
+									// if (items[j].nodeType == 1) { // get rid of the whitespace text nodes
+										// itemsArr.push(items[j]);
+									// }
+								// }
+								// itemsArr.sort(function(a,b){
+									// if (a.getAttribute("uID") < b.getAttribute("uID"))
+										// return -1;
+									// if (a.getAttribute("uID") > b.getAttribute("uID"))
+										// return 1;
+									// return 0;
+									// });
+
+								// for (j = 0; j < itemsArr.length; ++j) {
+								  // element.appendChild(itemsArr[j]);
+								// }
+								
+								//call function writeTreeToXML recursively for all children
+								writeTreeToXML(child,anXMLDoc,newXPath)
+							}
+						}
+						else
+						{
+							if (aNode.value){element.innerHTML = String(aNode.value);}
+							else{element.innerHTML = " ";}
+						}
+						//return the xml document
+						return anXMLDoc;
+					}
+					
+					function removeAttributeInAllElements(aDocument,attribute)
+					{
+					  var matchingElements = [];
+					  var allElements = aDocument.getElementsByTagName('*');
+					  for (var i = 0, n = allElements.length; i < n; i++)
+					  {
+						if (allElements[i].getAttribute(attribute) !== null)
+						{
+							allElements[i].removeAttribute(attribute);
+						}
+					  }
+					  return matchingElements;
+					}
+					
+					function putAncestorsInXMLString(strWrapper, aNode)
+					{
+						//Name of the new XML element
+						var nodeName = aNode.name.split(/[\[\]]+/);//Split name at "[]" which is the uID 
+						var cleanNodeName = nodeName[0].split(/[\+\*\^\-\ \#]+/);//Split nodeName all special characters
+						//If nodeName contains a uID, make the uID an attribute
+						if (nodeName[1])
+						{
+							var uID = nodeName[1];
+							strWrapper.val = "<"+cleanNodeName[0]+" uID='"+ uID +"'>"+strWrapper.val+"</"+cleanNodeName[0]+">";;
+						}
+						else
+						{
+							strWrapper.val = "<"+cleanNodeName[0]+">"+strWrapper.val+"</"+cleanNodeName[0]+">";;
+						}
+						var aParent = aNode.parent;
+						if (aParent)
+						{
+							return putAncestorsInXMLString(strWrapper, aParent);
+						}
+						else 
+						{
+							return strWrapper;
+						}
+					}
+					
+					function putAncestorsInXPath(strWrapper, aNode)
+					{
+						//Name of the new XML element
+						var nodeName = aNode.name.split(/[\[\]]+/);//Split name at "[]" which is the uID 
+						var cleanNodeName = nodeName[0].split(/[\+\*\^\-\ \#]+/);//Split nodeName all special characters
+						//If nodeName contains a uID, make the uID an attribute
+						if (nodeName[1])
+						{
+							var uID = nodeName[1];
+							strWrapper.val = "/"+cleanNodeName[0]+"[@uID='"+uID+"']"+strWrapper.val;
+						}
+						else
+						{
+							strWrapper.val = "/"+cleanNodeName[0]+strWrapper.val;
+						}
+						var aParent = aNode.parent;
+						if (aParent)
+						{
+							return putAncestorsInXPath(strWrapper, aParent);
+						}
+						else 
+						{
+							return strWrapper;
+						}
+					}
+					
+					// Function to download data to a file
+					function download(filename, text) {
+						var element = document.createElement('a');
+						element.setAttribute('href', 'data:text/plain;charset=utf-8,' + encodeURIComponent(text));
+						element.setAttribute('download', filename);
+
+						element.style.display = 'none';
+						document.body.appendChild(element);
+
+						element.click();
+
+						document.body.removeChild(element);
+					}
+					
+					//menu --> functions for right click options
+					var nodeMenu = [
+					{
+						title: 'Show node information',
+						onMouseDown: function(elm, d, i) {
+							showVariableTable(d);
+						},
+						onMouseUp: function(elm, d, i) {},
+						onMouseOver: function(elm, d, i) {},
+						childrenItems: []
+					},
+					{
+						title: 'Show usage of node in diagram',
+						onMouseDown: function(elm, d, i) {
+							d3.selectAll(".treeFrame").attr("fill-opacity", .5);
+							d3.selectAll(".nodeText").style("fill-opacity", 0.5);					
+							var theText="";
+							highlight(d,theText);
+						},
+						onMouseUp: function(elm, d, i) {				
+							d3.selectAll(".link").style("opacity",.6)
+							d3.selectAll(".treeFrame").attr("fill-opacity", .8);
+							d3.selectAll(".nodeText").style("fill-opacity", 1);					
+						},
+						onMouseOver: function(elm, d, i) {
+						},
+						childrenItems: []
+					},
+					{
+						title: 'Copy x-path to clipboard',
+						onMouseDown: function(elm, d, i) {
+							function copyToClipboard(text) 
+							{
+								window.prompt("Copy to clipboard: Ctrl+C, Enter", text);
+							}
+							function copyXPathToClipboard(data,aText)
+							{
+								aText = "/"+data.name+aText;
+								if (data.parent){copyXPathToClipboard(data.parent,aText)}
+								else{copyToClipboard(aText);}
+							}
+							var copyText="";
+							copyXPathToClipboard(d,copyText);
+							d3.select('.d3-context-menu').style('display', 'none');
+						},
+						onMouseUp: function(elm, d, i) {
+						},
+						onMouseOver: function(elm, d, i) {
+						},
+						childrenItems: []
+					},
+					{
+						title: 'Download full tree as XML-file',
+						onMouseDown: function(elm, d, i) {
+							//Begin xml structure with the first element
+							var xmlString = "<"+nodes[0].name+">"+"</"+nodes[0].name+">";
+							//Create a new xml document
+							var parser = new DOMParser();
+							var xmlDocument = parser.parseFromString(xmlString, "text/xml"); //important to use "text/xml"
+							//Get initial xPath of the tree and pass it to the function "writeTreeToXML"
+							var initialXPath = "/"+nodes[0].name;								
+							writeTreeToXML(nodes[0],xmlDocument,initialXPath);
+							//remove all attributes dummyID
+							removeAttributeInAllElements(xmlDocument,'dummyID');
+							//Make the xml document a string
+							var serializer = new XMLSerializer();
+							var xmlString = serializer.serializeToString(xmlDocument);
+							xmlString = vkbeautify.xml(xmlString);														
+							//Download a document with the xml-schema
+							download(theName+'_full.xml',xmlString);						
+						},
+						onMouseUp: function(elm, d, i) {
+						},
+						onMouseOver: function(elm, d, i) {
+						},
+						childrenItems: []
+					},
+					{
+						title: 'Download tree as XML-file from current node',
+						onMouseDown: function(elm, d, i) {
+							var xmlString = putAncestorsInXMLString({ val : '' }, d).val;
+							var initialXPath = putAncestorsInXPath({ val : '' }, d).val;												
+							//Create a new xml document
+							var parser = new DOMParser();
+							var xmlDocument = parser.parseFromString(xmlString, "text/xml"); //important to use "text/xml"
+							//Get initial xPath of the tree and pass it to the function "writeCurrentTreeToXML"
+							writeTreeToXML(d,xmlDocument,initialXPath);
+							//remove all attributes dummyID
+							removeAttributeInAllElements(xmlDocument,'dummyID');
+							//Make the xml document a string
+							var serializer = new XMLSerializer();
+							xmlString = serializer.serializeToString(xmlDocument);
+							xmlString = vkbeautify.xml(xmlString);														
+							//Download a document with the xml-schema
+							download(theName+"_"+d.name+'.xml',xmlString);						
+						},
+						onMouseUp: function(elm, d, i) {
+						},
+						onMouseOver: function(elm, d, i) {
+						},
+						childrenItems: []
+					}
+					]
+					
+					
+					
+					
+
+					// Update the nodes…
+					var treeNode = svgGroup.selectAll("g.treeNode")
+						.data(nodes, function(d) {
+							return d.id || (d.id = ++i);
+						});
+
+					var dblclick_timer = false;
+					// Enter any new nodes at the parent's previous position.
+					var nodeEnter = treeNode.enter().append('g')
+					  .attr('class', 'treeNode')
+					  .attr("transform", function(d) {
+						return "translate(" + source.y0 + "," + source.x0 + ")";
+					})
+					.on('contextmenu', d3.contextMenu(nodeMenu))
+					.on("mousedown", function(d) {
+						if (d3.event.which != 3)
+						{
+							// if double click timer is active, this click is the double click
+							if ( dblclick_timer )
+							{
+								clearTimeout(dblclick_timer)
+								dblclick_timer = false
+								// double click code code comes here
+								//console.log("DOUBLE CLICK")
+								dblclick(d);
+							}
+							// otherwise, what to do after single click (double click has timed out)
+							else dblclick_timer = setTimeout( function(){
+								dblclick_timer = false
+								// single click code code comes here
+								//console.log("SINGLE CLICK")
+								click(d);
+							}, 250)
+						}
+					})
+						
+					nodeEnter.append("circle")
+						.attr('class', 'nodeCircle')
+						.attr("r", 0)
+						.style("fill", function(d) {
+							if (d._children)
+							{
+								if(theName.includes("Input")){return '#ea9999'}
+								else if(theName.includes("Output")){return '#d6ea99'}
+								else {return "lightsteelblue"}
+							}
+							else {return "#fff"}
+						})
+						.style("stroke", function(d) {
+							if(theName.includes("Input")){
+								//console.log(d);
+								return '#CC0000'}
+							else if(theName.includes("Output")){
+								//console.log(d);
+								return '#99CC00'}
+						})
+						.attr("cx", function(d) {return xOffset});
+
+					nodeEnter.append("text")
+						.attr("x", function(d) 
+						{
+								return d.children || d._children ? -10+xOffset : 10+xOffset;
+						})
+						.attr("dy", ".35em")
+						.attr('class', 'nodeText')
+						.attr("text-anchor", function(d) {
+							return d.children || d._children ? "end" : "start";
+						})
+						.text(function(d) {
+							return d.text;
+						})
+						.style("fill-opacity", 0)
+						
+
+					// Update the text to reflect whether node has children or not.
+					treeNode.select('text')
+						.attr("x", function(d) {
+							return d.children || d._children ? -10+xOffset : 10+xOffset;
+						})
+						.attr("text-anchor", function(d) {
+							return d.children || d._children ? "end" : "start";
+						})
+						.text(function(d) {
+							return d.text;
+						});
+
+					// Change the circle fill depending on whether it has children and is collapsed
+					treeNode.select("circle.nodeCircle")
+						.attr("r", 4.5)
+						.style("fill", function(d) {
+							if (d._children)
+							{
+								if (d._children)
+								{
+									if(theName.includes("Input")){return '#ea9999'}
+									else if(theName.includes("Output")){return '#d6ea99'}
+									else {return "lightsteelblue"}
+								}
+								else {return "#fff"}
+							}
+							else{return "#fff";}
+						})					
+								
+					// UPDATE		
+					// Transition nodes to their new position.
+					var nodeUpdate = treeNode.transition()
+						.duration(duration)
+						.attr("transform", function(d) {
+							return "translate(" + d.y + "," + d.x + ")";
+						});
+
+					// Fade the text in
+					nodeUpdate.select("text")
+						.style("fill-opacity", 1);
+					
+					nodeEnter.append("svg:title").text("Click left to expand, click right to inspect")
+					
+					// Remove any exiting nodes
+					var nodeExit = treeNode.exit().transition()
+					  .duration(duration)
+					  .attr("transform", function(d) {
+						  return "translate(" + source.y + "," + source.x + ")";
+					  })
+					  .remove();
+
+					// Update the links…
+					var link = svgGroup.selectAll("path.treeLink")
+						.data(links, function(d) {
+							return d.target.id;
+						});
+
+					// Enter any new links at the parent's previous position.
+					link.enter().insert("path", "g")
+						.attr("class", "treeLink")
+						.attr("d", function(d) {
+							var o = {
+								x: source.x0,
+								y: source.y0
+							};
+							return diagonal({
+								source: o,
+								target: o
+							});
+						});
+
+					// Transition links to their new position.
+					link.transition()
+						.duration(duration)
+						.attr("d", diagonal);
+
+					// Transition exiting nodes to the parent's new position.
+					link.exit().transition()
+						.duration(duration)
+						.attr("d", function(d) {
+							var o = {
+								x: source.x,
+								y: source.y
+							};
+							return diagonal({
+								source: o,
+								target: o
+							});
+						})
+						.remove();
+					
+					// Stash the old positions for transition.
+					nodes.forEach(function(d) {						
+						d.x0 = d.x;
+						d.y0 = d.y;
+					});
+				}
+			}
+
+			
+			//aigner: Here the data is read and the sankey diagram is created
+			//#####################################################################//
+			var graphs,	currentGraph, varCategories, entireData;
+			function startSankeyDiagram(data, graphID) 
+			{
+				entireData = data;
+				graphs =  entireData.graphs;
+				for (var i=0;i<graphs.length;i++)
+				{
+					if (graphs[i].id==graphID)
+					{
+						currentGraph = graphs[i]
+					}
+				}
+				varCategories =  entireData.categories;
+				
+				
+				var graph = currentGraph.xdsm;
+				var theNodes = graph.nodes
+				var theLinks = graph.edges
+				theLinks.forEach(function (link) {
+				  link.source = link.from;
+				  link.target = link.to;
+				  link.value = link.name.split(",").length
+				});
+				
+				//################################################################################################//	
+				var headerDiv = sankeyDiagramDiv.append("div").attr("class","panel panel-primary")
+				headerDiv.append("div").attr("class","panel-heading text-center")
+						.append("h3")
+						.attr("class","panel-title")
+						.style("font-family","Arial")
+						.style("font-size","20pt")
+						.text("Sankey Diagram")
+				var name_tmp="";
+				if (currentGraph.name){name_tmp=currentGraph.name}
+				else{name_tmp="Graph " + currentGraph.id}
+				headerDiv.append("div").attr("class","panel-body")
+					.style("font-family","Arial")
+					.style("font-size","16pt")
+					.text("Graph name: " + name_tmp)
+				headerDiv.append("div").attr("class","panel-body")
+					.style("font-family","Arial")
+					.style("font-size","16pt")
+					.text("Graph description: " + currentGraph.description)
+				//################################################################################################//	
+				
+				//aigner: Tree option menu to select which kind of tree view the user wants to see
+				//#####################################################################//
+				function showFullTree(categoryID, categoryDescr)
+				{
+					var name_tmp = "Full data model tree view; Categorization: " + categoryDescr;
+					var emptyArray="";
+					var allLinks = d3.selectAll(".link");
+					var theSchema = currentGraph.variableSchemes[categoryID];
+					createTreeLayout(name_tmp,theSchema,emptyArray,allLinks);
+				}
+				
+				var childrenItems = [];
+				for (var j=0; j< varCategories.length; j++)
+				{
+					childrenItems.push({title: 'according to ' + varCategories[j].description,
+								   varCategory: varCategories[j].name,
+								   description: varCategories[j].description,
+								   onMouseClick: function(elm, d, i) {showFullTree(d.varCategory,d.description)},
+								   onMouseOver: function(elm,d,i){}})
+				}
+				var treeOptionMenu = [
+				{
+					title: 'Show variable tree...',
+					onMouseDown: function(elm, d, i) {
+					},
+					onMouseUp: function(elm, d, i) {
+					},
+					onMouseOver: function(elm, d, i) {
+					},
+					childrenItems: childrenItems
+				}
+				]
+				//#####################################################################//
+				
+				
+				//aigner: treeLayout in the bottom
+				//################################################################################################//		
+				//aigner: Data Model Expand Button
+				//##########################################################
+				var dataModelDiv = d3.select(".sankeyDiagramDiv").append("div").attr("class","dataModelDiv").attr("transform","translate(10,0)")
+				var ul = dataModelDiv.append("ul")
+				var dropdown1 = ul.append("li").on("mouseover", function(){d3.select(this).style("cursor", "default")})
+				dropdown1.append("img").attr("src",fileReference.AGILE_Icon)
+					.attr("align","left")
+					.style("margin-left","6px")
+					.style("margin-right","-10px")
+					.style("margin-top","10px")
+					.style("margin-bottom","0px")
+					.attr("height","20")
+					.attr("width","20")
+				dropdown1.append("a").text("Data Model")
+				var links = dropdown1.append("ul");
+				for (var j=0; j< varCategories.length; j++)
+				{
+					//console.log(varCategories[j])
+					var linkLi = links.append("li");
+					var linkA = linkLi.append("a")
+						.attr("id",j)
+						.text(varCategories[j].description)
+						.on("mouseover", function(){d3.select(this).style("cursor", "pointer")})
+						.on("click", function()
+						{		
+							showFullTree(varCategories[this.id].name,varCategories[this.id].description)
+						})
+				}
+				//aigner: Set width of the div, so the VISTOMS dropdown (in the top of the page) still works
+				dataModelDiv.style("width", String(dropdown1.node().getBoundingClientRect().width+20)+"px")
+				//##########################################################
+				//################################################################################################//
+				
+				d3.select(".dataModelDiv").moveToBack()
+				headerDiv.moveToBack()
+                d3.select(".addButtonDiv").moveToBack()
+				d3.select(".navigationBarDiv").moveToBack()
+				d3.select(".visPackDiv").moveToBack()
+				
+				
+				biHiSankey
+				  .nodes(theNodes)
+				  .links(theLinks)
+				  .initializeNodes(function (node) {
+					node.state = node.parent ? "contained" : "collapsed";
+				  })
+				  .layout(LAYOUT_INTERATIONS);
+
+				disableUserInterractions(2 * TRANSITION_DURATION);
+				
+				update();
+			};
+			//#####################################################################//
+			startSankeyDiagram(data,graphID);
+			
+			},{"d3":1}]},{},[2]);
+		}
+		</script>
+    </body>
+</html>