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Jan Thorbecke authoredJan Thorbecke authored
makemod.c 32.76 KiB
#include "par.h"
#include "segy.h"
#include <time.h>
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <assert.h>
#ifndef ABS
#define ABS(x) ((x) < 0 ? -(x) : (x))
#endif
#ifndef MAX
#define MAX(x,y) ((x) > (y) ? (x) : (y))
#endif
#ifndef MIN
#define MIN(x,y) ((x) < (y) ? (x) : (y))
#endif
#define NINT(x) ((int)((x)>0.0?(x)+0.5:(x)-0.5))
float **alloc2float (size_t n1, size_t n2);
void free2float (float **p);
void grid(float **gridcp, float **gridcs, float **gridro, int *zp, float **cp, float **cs, float **ro, int minx, int maxx, int optgrad, float gradlen, float gradcp, float gradcs, float gradro, float dx, float dz, int nz);
void gridabove(float **gridcp, float **gridcs, float **gridro, int *zp, float **cp, float **cs, float **ro, int minx, int maxx, int optgrad, float gradlen, float gradcp, float gradcs, float gradro, float dx, float dz, int nz);
void plotexample();
void name_ext(char *filename, char *extension);
void interpolation(float *x, float *z, int nxp, int nx, int poly, int *pminx, int *pmaxx, float dx, float **cp, float **cs, float **ro, int nvel, float *interface);
void linearint(int *zp, int minx, int maxx, float dz, float *interface);
void sinusint(int *zp, int minx, int maxx, float dz, float *interface, float dx, float ampl, float wavel);
void roughint(int *zp, int minx, int maxx, float dz, float *interface, float ampl, float beta, float seed);
void fractint(int *zp, int minx, int maxx, float dx, float dz, float *interface, float Nsin, float ampl, float D, float k0, float b, float seed);
void elipse(float *x, float *z, int nxp, float dx, float dz, float **gridcp, float **gridcs, float **gridro, float **cp, float **cs, float **ro, float *interface, int *zp, int nz, int nx, float r1, float r2, float gradcp, float gradcs, float gradro);
void diffraction(float *x, float *z, int nxp, float dx, float dz, float **gridcp, float **gridcs, float **gridro, float **cp, float **cs, float **ro, float *interface, int *zp, int nx, int diffrwidth, int type);
void randdf(float *x, float *z, int nxp, float dx, float dz, float **gridcp, float **gridcs, float **gridro, float **cp, float **cs, float **ro, float *interface, int *zp, int nx, float sizex, float sizez, int ndiff, int diffrwidth, int type);
/*********************** self documentation **********************/
char *sdoc[] = {
" ",
" makemod - gridded subsurface model builder",
" ",
" makemod file_base= cp0= sizex= sizez= dx= dz= [optional parameters] ",
" ",
" Required parameters:",
" ",
" file_base= ............... base name of the output file(s).",
" cp0= ..................... Cp for background medium.",
" sizex= ................... x-size of the model in meters.",
" sizez= ................... z-size of the model in meters.",
" dx= ...................... grid distance in x in meters.",
" dz= ...................... grid distance in z in meters.",
" ",
" Optional parameters:",
" ",
" orig=0,0 (x,z) ........... origin at the top left corner of the model.",
" MEDIUM ",
" cs0=0 .................... Cs for background medium (0 is none).",
" ro0=0 .................... Rho for background medium (0 is none).",
" gradt=1 .................. type of boundary gradient (1=linear, 2=cos)",
" cp=none .................. P-wave velocities below the interface", " cs=none .................. S-wave velocities below the interface",
" ro=none .................. Density below the interface",
" above=0 .................. define model below interface",
" =1: define model above interface",
" INTERFACE ",
" intt=none ................ Type of interface",
" var=none ................. variables to describe the interface",
" grad=0.0 ................. gradient(m) of the boundary",
" gradunit=0 ............... gradient unit (m/s per gradunit)",
" gradcp=0.0 ............... gradient(m/s per grad-unit) in the layer",
" gradcs=0.0 ............... gradient(m/s per grad-unit) in the layer",
" gradro=0.0 ............... gradient(kg/m3 per grad-unit) in the layer",
" poly=0 ................... polynominal interpolation through (x,z) points",
" x=none ................... x-positions for the interface",
" z=none ................... z-positions for the interface",
" dtype=0 .................. diffractor type for diffr and randdf",
" OUTPUT ",
" writeint=0 ............... interfaces as function of x (ext: _int)",
" supersmooth=0 ............ samples at dx/4 and apply 5x5 smoothing operator(1)",
" sigma=0.8 ................ smoothing value, higher values gives more smoothing",
" reflectivity=0 ........... compute reflectivity (ext: _rfl)",
" rayfile=0 ................ interfaces as function of x in ASCII file.mod",
" skip=5 ................... number of x position to skip in file_ray",
" example=0 ................ makes an example parameter file",
" verbose=0 ................ silent option; >0 display info",
" ",
" Options for intt:",
" - def = default interface through the points(Xi, Zi)",
" - sin = sinus shaped interface",
" - rough = rough interface with beta(smoothness)",
" - fract = cosinus fractal shaped interface",
" - random = define random velocities in layer",
" - elipse = define elipse shaped body",
" - diffr = point diffractions",
" - randdf = define random diffractors ",
" Options for var in case of intt =:",
" - sin(2) = wavelength,amplitude",
" - rough(3) = amplitude,beta,seed",
" - fract(6) = Nsinus,amplitude,dim,k0,freqscale,seed",
" - random(1) = min-max variation around cp",
" - elipse(2) = r1, r2: vertical and horizontal radius",
" - diffr(1) = width of each point, type(optional)",
" - randdf(2) = number of points, width of each point",
" Options for poly in default interface:",
" - 0 = linear",
" - 1 = polynomal",
" - 2 = cubic spline",
" Options for dtype value in var=width,dtype for diffr:",
" - -1 = random (0, 1, or 2) diffractor type",
" - 0 = cubic diffractor",
" - 1 = diamond diffractor",
" - 2 = circular diffractor",
" Option for gradunit, gradient unit per layer:",
" - 0 = gradient unit per layer is m/s per dz (default)",
" - 1 = gradient unit per layer is m/s per m",
" (1) Reference: Zeng and West: Geophysics 1996 ",
" ",
" makemod builds a gridded subsurface file which can be used in a migration",
" or finite difference program. The gridded model is stored in files with",
" extensions _cp, _cs, _ro. The extensions _int and .mod are used for the ",
" interface files. The output format of the file(s) depends on the .(dot)",
" extension of file_base.",
" ",
" author : Jan Thorbecke : 18-01-1994 (janth@xs4all.nl)",
" product : Originates from DELPHI software",
" : revision 2010",
" ",
NULL};
/**************** end self doc ***********************************/
int main(int argc, char **argv)
{
FILE *fpint, *fpcp, *fpcs, *fpro;
int example, verbose, writeint, nb;
int above, diffrwidth, dtype, reflectivity, supersmooth;
int Ngp, Ngs, Ngr, Np, Ns, Nr, Ng, Ni, Nv, Nvi, No, Noi;
int jint, jcount, j, ix, iz, nx, nz, nxp, nzp, *zp, nmaxx, nminx, optgrad, poly, gradt;
int ncp, nro, ncs, nvel, skip, rayfile, store_int;
long lseed;
size_t nwrite;
float *data_out, orig[2], cp0, cs0, ro0, Z1, Z2, sigma;
float *x, *z, *var, *interface, **inter;
float back[3], sizex, sizez, dx, dz;
float **cp ,**cs, **ro, aver, gradlen, gradcp, gradcs, gradro;
/* Gradient unit flag */
/* ------------------ */
/* - 0 Unit : m/s per dz */
/* - 1 Unit : m/s per m */
int gradunit;
/* Number of Z-reference points (one per layer) */
int Nzr=0;
float **gridcp, **gridcs, **gridro;
segy *hdrs;
char *file, intt[10], *file_base, filename[150];
initargs(argc, argv);
requestdoc(1);
if (!getparint("example", &example)) example=0;
else { plotexample(); exit(0); }
if(getparstring("file",&file_base))
vwarn("parameters file is changed to file_base");
else {
if(!getparstring("file_base",&file_base))
verr("file_base not specified.");
}
if(getparfloat("back", back)) {
vwarn("parameters back is not used anymore");
vwarn("it has changed into cp0 (ro0,cs0 are optional)");
nb = countparval("back");
if (nb == 1) {
vwarn("The new call should be cp0=%.1f",back[0]);
cp0 = back[0];
}
if (nb == 2) {
vwarn("The new call should be cp0=%.1f",back[0]);
vwarn(" ro0=%.1f",back[1]);
cp0 = back[0];
ro0 = back[1];
}
if (nb == 3) {
vwarn("The new call should be cp0=%.1f",back[0]);
vwarn(" cs0=%.1f",back[1]);
vwarn(" ro0=%.1f",back[2]);
cp0 = back[0];
cs0 = back[1];
ro0 = back[2];
}
vmess("Don't worry everything still works fine");
}
else {
if(!getparfloat("cp0", &cp0)) verr("cp0 not specified.");
if(!getparfloat("cs0", &cs0)) cs0 = -1;
if(!getparfloat("ro0", &ro0)) ro0 = -1;
}
if(!getparfloat("sizex", &sizex)) verr("x-model size not specified.");
if(!getparfloat("sizez", &sizez)) verr("z-model size not specified."); if(!getparfloat("dx", &dx)) verr("grid distance dx not specified.");
if(!getparfloat("dz", &dz)) verr("grid distance dz not specified.");
if(!getparfloat("orig", orig)) orig[0] = orig[1] = 0.0;
if(!getparint("gradt", &gradt)) gradt = 1;
if(!getparint("gradunit", &gradunit)) gradunit = 0;
if(!getparint("writeint", &writeint)) writeint = 0;
if(!getparint("reflectivity", &reflectivity)) reflectivity = 0;
if(!getparint("supersmooth", &supersmooth)) supersmooth = 0;
if(!getparfloat("sigma", &sigma)) sigma = 0.8;
if(!getparint("rayfile", &rayfile)) rayfile = 0;
if(!getparint("skip", &skip)) skip = 5;
if(!getparint("above", &above)) above=0;
if(!getparint("verbose", &verbose)) verbose=0;
if(!getparint("dtype", &dtype)) dtype = 0;
if (supersmooth==1) {
dx = dx/4;
dz = dz/4;
}
if ((writeint == 1) || (rayfile == 1)) store_int = 1;
else store_int = 0;
/*=================== check parameters =================*/
Np = countparname("cp");
Ns = countparname("cs");
Nr = countparname("ro");
Ng = countparname("grad");
No = countparname("poly");
Ni = countparname("intt");
Nv = countparname("var");
Ngp = countparname("gradcp");
Ngs = countparname("gradcs");
Ngr = countparname("gradro");
Nvi = 0;
for (jint = 1; jint <= Ni; jint++) {
getnparstring(jint,"intt", &file);
strcpy(intt, file);
if (strstr(intt,"sin") != NULL) Nvi++;
if (strstr(intt,"rough") != NULL) Nvi++;
if (strstr(intt,"fract") != NULL) Nvi++;
if (strstr(intt,"elipse") != NULL) Nvi++;
if (strstr(intt,"random") != NULL) Nvi++;
// if (strstr(intt,"randdf") != NULL) Nvi++;
if (strstr(intt,"diffr") != NULL || strstr(intt,"randdf") != NULL) {
Nvi++;
// if (Ng != 0) Ng++;
// if (No != 0) No++;
}
}
// fprintf(stderr,"Nvi=%d ng=%d No=%d np=%d,", Nvi,Ng,No,Np);
if (Np != Nr && ro0 > 0) verr("number of cp and ro not equal.");
if (Np != Ni) verr("number of cp and interfaces not equal.");
if (Nvi != Nv) verr("number of interface variables(var) not correct.");
if (Ns == 0 && Nr == 0) if (verbose>=2) vmess("Velocity model.");
if (Ns == 0) { if (verbose>=2) vmess("Acoustic model."); }
else {
if (verbose>=2) vmess("Elastic model.");
if (Np != Ns) verr("number of cp and cs not equal");
}
if (Ng == 0) {
if (verbose>=2) vmess("No boundary gradients are defined.");
}
else if (Ng != Np) {
verr("number of boundary gradients and interfaces are not equal.");
}
if (Ngp == 0) { if (verbose>=2) vmess("No interface gradients for cp defined.");
}
else if (Ngp != Np) {
verr("gradcp gradients and interfaces are not equal.");
}
if (Ngs == 0) {
if (verbose>=2) vmess("No interface gradients for cs defined.");
}
else if (Ngs != Np) {
verr("gradcs gradients and interfaces are not equal.");
}
if (Ngr == 0) {
if (verbose>=2) vmess("No interface gradients for rho defined.");
}
else if (Ngr != Np) {
verr("gradro gradients and interfaces are not equal.");
}
if (No == 0) {
if (verbose>=2) vmess("All interfaces are linear.");
}
// else if (No != Np) {
// verr("number of poly variables and interfaces are not equal.");
// }
if (Np > 0) {
if (countparname("x") != Np)
verr("a x array must be specified for each interface.");
if (countparname("z") != Np)
verr("a z array must be specified for each interface.");
}
else Np = 1;
if (Nzr != Np && Nzr !=0) {
verr("number of zref gradients not equal to number of interfaces");
}
/*=================== initialization of arrays =================*/
nz = NINT(sizez/dz)+1;
nx = NINT(sizex/dx)+1;
zp = (int *)malloc(nx*sizeof(int));
interface = (float *)malloc(nx*sizeof(float));
var = (float *)malloc(8*sizeof(float));
gridcp = alloc2float(nz, nx);
if(gridcp == NULL) verr("memory allocation error gridcp");
if (Ns || (NINT(cs0*1e3) >= 0)) {
gridcs = alloc2float(nz, nx);
if(gridcs == NULL) verr("memory allocation error gridcs");
}
else gridcs = NULL;
if (Nr || (NINT(ro0*1e3) >= 0)) {
gridro = alloc2float(nz, nx);
if(gridro == NULL) verr("memory allocation error gridro");
}
else gridro = NULL;
cp = alloc2float(nx,3);
cs = alloc2float(nx,3);
ro = alloc2float(nx,3);
if (store_int == 1) inter = alloc2float(nx, 2*Np);
if (verbose) {
vmess("Origin top left (x,z) . = %.1f, %.1f", orig[0], orig[1]);
vmess("Base name ............. = %s", file_base);
vmess("Number of interfaces .. = %d", Np);
vmess("length in x ........... = %f (=%d)", sizex, nx);
vmess("length in z ........... = %f (=%d)", sizez, nz);
vmess("delta x ............... = %f", dx);
vmess("delta z ............... = %f", dz); vmess("cp0 ................... = %f", cp0);
if (Ns) vmess("cs0 ................... = %f", cs0);
if (Nr) vmess("ro0 ................... = %f", ro0);
vmess("write interfaces ...... = %d", writeint);
vmess("store interfaces ...... = %d", store_int);
if (above) vmess("define model above interface");
else vmess("define model below interface");
}
/*========== initializing for homogeneous background =============*/
nminx = 0;
nmaxx = nx;
for (j = nminx; j < nmaxx; j++) {
cp[0][j] = cp0;
cs[0][j] = cs0;
ro[0][j] = ro0;
zp[j] = 0;
cp[1][j] = cp0;
cs[1][j] = cs0;
ro[1][j] = ro0;
}
gradlen = 0.0;
gradcp = gradcs = gradro = 0.0;
optgrad = 3;
if (above == 0) {
Nvi = 1; Noi = 1;
} else {
Nvi = Ngp; Noi = Ngp;
}
grid(gridcp, gridcs, gridro, zp, cp, cs, ro, nminx, nmaxx, optgrad,
gradlen, gradcp, gradcs, gradro, dx, dz, nz);
nxp = nzp = 2;
x = (float *)malloc(nxp*sizeof(float));
z = (float *)malloc(nzp*sizeof(float));
if (Ni == 0) {
if (verbose) vmess("No interfaces are defined, Homogeneous model.");
Np = 0;
}
/*========== filling gridded model with interfaces =============*/
for (jcount = 1; jcount <= Np; jcount++) {
/* for above interface definition reverse */
/* order of interfaces to scan */
if (above == 0) jint=jcount;
else jint=Np+1-jcount;
if (verbose) vmess("***** Interface number %d *****", jint);
getnparstring(jint,"intt", &file);
strcpy(intt, file);
nxp = countnparval(jint,"x");
nzp = countnparval(jint,"z");
if (nxp != nzp) {
vmess("nxp = %d nzp =%d for interface %d",nxp, nzp, jint);
verr("Number of x and z values not equal for interface %d",jint);
}
ncp = countnparval(jint,"cp");
nro = countnparval(jint,"ro");
ncs = countnparval(jint,"cs");
if (ncp == 1) {
if (verbose>=2) vmess("No lateral gradient in P velocity");
} else if (ncp == 2) {
if (verbose) vmess("lateral P-gradient from begin to end");
}
else if (ncp != nxp) {
vmess("ncp = %d nxp =%d for interface %d",ncp, nxp, jint);
verr("Number of cp's and x not equal for interface %d",jint);
}
if (nro <= 1) {
if (verbose>=2) vmess("No lateral gradient in density");
}
else if (nro == 2) {
if (verbose) vmess("lateral Rho-gradient from begin to end");
}
else if (nro != nxp) {
vmess("nro = %d nxp =%d for interface %d",nro, nxp, jint);
verr("Number of ro's and x not equal for interface %d",jint);
}
if (ncs <= 1) {
if (verbose>=2) vmess("No lateral gradient in S velocity");
}
else if (ncs == 2) {
if (verbose) vmess("lateral S-gradient from begin to end");
}
else if (ncs != nxp) {
vmess("ncs = %d nxp =%d for interface %d",ncs, nxp, jint);
verr("Number of cs's and x not equal for interface %d",jint);
}
nvel = MAX(ncp, MAX(nro, ncs));
free(x);
free(z);
x = (float *)malloc(nxp*sizeof(float));
z = (float *)malloc(nzp*sizeof(float));
memset(interface, 0, nx*sizeof(float));
getnparfloat(jint,"x",x);
getnparfloat(jint,"z",z);
getnparfloat(jint,"cp",cp[2]);
if (Nr == 0) ro[2][0] = 0.0;
else getnparfloat(jint,"ro", ro[2]);
if (Ns == 0) cs[2][0] = 0.0;
else getnparfloat(jint,"cs", cs[2]);
if (Ng == 0) gradlen = 0.0;
else getnparfloat(Noi,"grad", &gradlen);
if (No == 0) poly = 0;
else getnparint(Noi,"poly", &poly);
if (Ngp == 0) gradcp = 0.0;
else getnparfloat(Noi,"gradcp", &gradcp);
if (Ngs == 0) gradcs = 0.0;
else getnparfloat(Noi,"gradcs", &gradcs);
if (Ngr == 0) gradro = 0.0;
else getnparfloat(Noi,"gradro", &gradro);
/* if gradunit is in meters, recalculate gradcp,gradcs and gradro */
if (gradunit > 0) {
gradcs = gradcs * dz;
gradcp = gradcp * dz;
gradro = gradro * dz;
}
if (nvel != 1) {
if (ncp == 1) {
for (j = 1; j < nvel; j++) cp[2][j] = cp[2][0];
}
if (ncs == 1) {
for (j = 1; j < nvel; j++) cs[2][j] = cs[2][0];
}
if (nro == 1) {
for (j = 1; j < nvel; j++) ro[2][j] = ro[2][0];
} }
if (verbose) {
vmess("Interface type .......... = %s", intt);
vmess("Boundary gradient ....... = %f", gradlen);
vmess("Interface gradient cp ... = %f", gradcp);
if (Ns) vmess("Interface gradient cs ... = %f", gradcs);
if (Nr) vmess("Interface gradient ro ... = %f", gradro);
if (verbose>=2) {
vmess("Polynomal ............... = %d", poly);
vmess("Number of (x,z) points... = %d", nxp);
vmess("P-wave velocities ....... = %d", ncp);
if (Ns) vmess("S-wave velocities ....... = %d", ncs);
if (Nr) vmess("Densities ............... = %d", nro);
}
for (j = 0; j < nxp; j++) {
vmess("x = %6.1f \t z = %6.1f", x[j], z[j]);
if (nvel != 1) {
vmess(" cp = %f", cp[2][j]);
if (Ns) vmess(" cs = %f", cs[2][j]);
if (Nr) vmess(" rho = %f", ro[2][j]);
}
}
if (nvel == 1) {
vmess(" cp = %f", cp[2][0]);
if (Ns) vmess(" cs = %f", cs[2][0]);
if (Nr) vmess(" rho = %f", ro[2][0]);
}
}
for (j = 0; j < nxp; j++) {
x[j] -= orig[0];
z[j] -= orig[1];
}
for (j = 0; j < nxp; j++) {
if(x[j] > sizex) verr("x coordinate bigger than model");
if(z[j] > sizez) verr("z coordinate bigger than model");
}
if (gradlen > 0) optgrad = gradt;
else optgrad = 3;
if (strstr(intt,"random") != NULL) {
Nv = countnparval(Nvi,"var");
if (Nv != 1) verr("Random interface must have 1 variables.");
getnparfloat(Nvi,"var", var);
lseed = (long)var[0];
srand48(lseed);
gradcp=gradcs=gradro=var[0];
optgrad = 4;
if (above == 0) Noi++; else Noi--;
if (above == 0) Nvi++; else Nvi--;
}
if ((strstr(intt,"diffr") == NULL) && (strstr(intt,"randdf") == NULL)) {
interpolation(x, z, nxp, nx, poly, &nminx, &nmaxx, dx,
cp, cs, ro, nvel, interface);
}
if ( (strstr(intt,"def") != NULL) || (strstr(intt,"random") != NULL) ) {
linearint(zp, nminx, nmaxx, dz, interface);
if (above == 0) Noi++; else Noi--;
}
if (strstr(intt,"sin") != NULL) {
Nv = countnparval(Nvi,"var");
if (Nv != 2) verr("Sinus interface must have 2 variables.");
getnparfloat(Nvi,"var", var);
sinusint(zp, nminx, nmaxx, dz, interface, dx, var[0], var[1]);
if (above == 0) Noi++; else Noi--;
if (above == 0) Nvi++; else Nvi--; }
else if (strstr(intt,"rough") != NULL) {
Nv = countnparval(Nvi,"var");
if (Nv != 3) verr("Rough interface must have 3 variables.");
getnparfloat(Nvi,"var", var);
roughint(zp, nminx, nmaxx, dz, interface, var[0],var[1],var[2]);
if (above == 0) Noi++; else Noi--;
if (above == 0) Nvi++; else Nvi--;
}
else if (strstr(intt,"fract") != NULL) {
Nv = countnparval(Nvi, "var");
if (Nv != 6) verr("Fractal interface must have 6 variables.");
getnparfloat(Nvi,"var", var);
fractint(zp, nminx, nmaxx, dx, dz, interface, var[0], var[1],
var[2], var[3], var[4], var[5]);
if (above == 0) Noi++; else Noi--;
if (above == 0) Nvi++; else Nvi--;
}
if ((strstr(intt,"elipse") != NULL) || (strstr(intt,"diffr") != NULL) || (strstr(intt,"randdf") != NULL)) {
if (strstr(intt,"randdf") != NULL) {
Nv = countnparval(Nvi, "var");
if (Nv != 2) verr("randdf interface must have 2 variables: number of points, width.");
getnparfloat(Nvi,"var", var);
if(!getparint("dtype", &dtype)) dtype = -1;
randdf(x, z, nxp, dx, dz, gridcp, gridcs, gridro, cp, cs, ro,
interface, zp, nx, sizex, sizez, var[0], (int)var[1], dtype);
if (above == 0) Noi++; else Noi--;
if (above == 0) Nvi++; else Nvi--;
}
if (strstr(intt,"elipse") != NULL) {
Nv = countnparval(Nvi, "var");
if (Nv != 2) verr("Elipse interface must have 2 variables.");
getnparfloat(Nvi,"var", var);
elipse(x, z, nxp, dx, dz, gridcp, gridcs, gridro,
cp, cs, ro, interface, zp, nz, nx, var[0], var[1], gradcp, gradcs, gradro);
if (above == 0) Noi++; else Noi--;
if (above == 0) Nvi++; else Nvi--;
}
else if ((strstr(intt,"diffr") != NULL)) {
Nv = countnparval(Nvi, "var");
if (Nv == 2 || Nv == 1) {
getnparfloat(Nvi,"var", var);
diffrwidth=(int)var[0];
if (Nv==1) {
if(!getparint("dtype", &dtype)) dtype = 0;
}
else dtype=(int)var[1];
}
else {
verr("diffr interface must have 1 or 2 variables: width,type.");
}
diffraction(x, z, nxp, dx, dz, gridcp, gridcs, gridro,
cp, cs, ro, interface, zp, nx, diffrwidth, dtype);
if (above == 0) Noi++; else Noi--;
if (above == 0) Nvi++; else Nvi--;
}
}
else {
if (above == 0) {
grid(gridcp, gridcs, gridro, zp, cp, cs, ro, nminx, nmaxx,
optgrad, gradlen, gradcp, gradcs, gradro, dx, dz, nz);
}
else {
gridabove(gridcp, gridcs, gridro, zp, cp, cs, ro, nminx, nmaxx,
optgrad, gradlen, gradcp, gradcs, gradro, dx, dz, nz);
}
}
if (store_int == 1) {
for(j = 0; j < nminx; j++) inter[jint-1][j] = 0.0;
for(j = nminx; j < nmaxx; j++) inter[jint-1][j] = interface[j];
for(j = nmaxx; j < nx; j++) inter[jint-1][j] = 0.0;
for(j = 0; j < nminx; j++) inter[jint-1+Np][j] = 0.0;
for(j = nminx; j < nmaxx; j++) inter[jint-1+Np][j] = zp[j]*dz;
for(j = nmaxx; j < nx; j++) inter[jint-1+Np][j] = 0.0;
}
} /* end of loop over interfaces */
/* apply supersampled data smoothing operator according to Zeng and West (1996) */
if (supersmooth==1) {
float Wsmooth[5][5], C, iC, xx, xz, *dataS, smooth;
int ixi, izi, nxout, nzout;
C=0;
sigma = -1.0*log(sigma)/(dx*(powf(0.25*2.0,2.0)));
for(ixi = -2; ixi < 3; ixi++) {
for(izi = -2; izi < 3; izi++) {
xx = 0.25*ixi;
xz = 0.25*izi;
Wsmooth[ixi+2][izi+2] = exp(-sigma*dx*(xx*xx+xz*xz) );
//fprintf(stderr,"Wsmooth[%d][%d] = %f\n", ixi, izi, Wsmooth[ixi+2][izi+2]);
C += Wsmooth[ixi+2][izi+2];
}
}
iC = 1.0/C;
//fprintf(stderr,"sigma=%f %f C=%f\n",sigma, exp(-sigma*dx*powf(0.25*2.0,2.0)),C);
nxout = (nx-1)/4+1;
nzout = (nz-1)/4+1;
//fprintf(stderr,"nxout=%d nzout=%d nx=%d nz=%d \n",nxout,nzout, nx, nz);
dataS = malloc(nxout*nzout*sizeof(float));
for(ix = 0; ix < nxout-1; ix++) {
for(iz = 0; iz < nzout-1; iz++) {
smooth = 0.0;
for(ixi = -2; ixi < 3; ixi++) {
for(izi = -2; izi < 3; izi++) {
smooth += Wsmooth[ixi+2][izi+2]/gridcp[4*ix+2+ixi][4*iz+2+izi];
}
}
dataS[ix*nzout+iz] = 1.0/(iC*smooth);
}
iz = nzout-1;
dataS[ix*nzout+iz] = dataS[ix*nzout+iz-1];
}
ix = nxout-1;
for(iz = 0; iz < nzout-1; iz++) {
dataS[ix*nzout+iz] = dataS[(ix-1)*nzout+iz];
}
ix = nxout-1; iz = nzout-1;
dataS[ix*nzout+iz] = dataS[(ix-1)*nzout+iz-1];
for(ix = 0; ix < nxout; ix++) {
for(iz = 0; iz < nzout; iz++) {
gridcp[ix][iz] = dataS[ix*nzout+iz];
}
}
/* smoothin densities */
if (Nr > 0 || getparfloat("ro0", &ro0)) {
for(ix = 0; ix < nxout-1; ix++) {
for(iz = 0; iz < nzout-1; iz++) {
smooth = 0.0;
for(ixi = -2; ixi < 3; ixi++) {
for(izi = -2; izi < 3; izi++) {
smooth += Wsmooth[ixi+2][izi+2]*gridro[4*ix+2+ixi][4*iz+2+izi]; }
}
dataS[ix*nzout+iz] = iC*smooth;
}
iz = nzout-1;
dataS[ix*nzout+iz] = dataS[ix*nzout+iz-1];
}
ix = nxout-1;
for(iz = 0; iz < nzout-1; iz++) {
dataS[ix*nzout+iz] = dataS[(ix-1)*nzout+iz];
}
ix = nxout-1; iz = nzout-1;
dataS[ix*nzout+iz] = dataS[(ix-1)*nzout+iz-1];
for(ix = 0; ix < nxout; ix++) {
for(iz = 0; iz < nzout; iz++) {
gridro[ix][iz] = dataS[ix*nzout+iz];
}
}
}
nx = nxout;
nz = nzout;
dx = dx*4;
dz = dz*4;
free(dataS);
}
if (verbose) vmess("Writing data to disk.");
hdrs = (segy *) calloc(nx,sizeof(segy));
for(j = 0; j < nx; j++) {
hdrs[j].f1= orig[1];
hdrs[j].f2= orig[0];
hdrs[j].d1= dz;
hdrs[j].d2= dx;
hdrs[j].ns= nz;
hdrs[j].trwf= nx;
hdrs[j].tracl= j;
hdrs[j].tracf= j;
hdrs[j].gx = (orig[0] + j*dx)*1000;
hdrs[j].scalco = -1000;
hdrs[j].timbas = 25;
hdrs[j].trid = TRID_DEPTH;
}
/* due to bug in SU, int-file has to be opened before other files are closed */
if (writeint == 1) {
strcpy(filename, file_base);
name_ext(filename, "_int");
fpint = fopen(filename,"w");
assert(fpint != NULL);
}
/* write P-velocities in file */
strcpy(filename, file_base);
name_ext(filename, "_cp");
fpcp = fopen(filename,"w");
assert(fpcp != NULL);
data_out = (float *)malloc(nx*nz*sizeof(float));
for(ix = 0; ix < nx; ix++) {
for(iz = 0; iz < nz; iz++) {
data_out[ix*nz+iz] = gridcp[ix][iz];
}
nwrite = fwrite( &hdrs[ix], 1, TRCBYTES, fpcp);
assert(nwrite == TRCBYTES);
nwrite = fwrite( &data_out[ix*nz], sizeof(float), nz, fpcp);
assert(nwrite == nz);
} fclose(fpcp);
/* write reflectivity of the interfaces */
if (reflectivity == 1) {
strcpy(filename, file_base);
name_ext(filename, "_rfl");
fpro = fopen(filename,"w");
assert(fpro != NULL);
for(ix = 0; ix < nx-1; ix++) {
for(iz = 0; iz < nz-1; iz++) {
Z1=gridro[ix][iz]*gridcp[ix][iz];
Z2=gridro[ix][iz+1]*gridcp[ix][iz+1];
data_out[ix*nz+iz] = (Z2-Z1)/(Z2+Z1);
}
data_out[ix*nz+nz-1] = 0.0;
nwrite = fwrite( &hdrs[ix], 1, TRCBYTES, fpro);
assert(nwrite == TRCBYTES);
nwrite = fwrite( &data_out[ix*nz], sizeof(float), nz, fpro);
assert(nwrite == nz);
}
ix = nx-1;
for(iz = 0; iz < nz; iz++) {
data_out[ix*nz+iz] = 0.0;
}
nwrite = fwrite( &hdrs[ix], 1, TRCBYTES, fpro);
assert(nwrite == TRCBYTES);
nwrite = fwrite( &data_out[ix*nz], sizeof(float), nz, fpro);
assert(nwrite == nz);
fclose(fpro);
} /* end of writing reflectivity file */
free2float(gridcp);
/* write S-velocities in file */
if (Ns > 0 || getparfloat("cs0", &cs0)) {
strcpy(filename, file_base);
name_ext(filename, "_cs");
fpcs = fopen(filename,"w");
assert(fpcs != NULL);
for(ix = 0; ix < nx; ix++) {
for(iz = 0; iz < nz; iz++) {
data_out[ix*nz+iz] = gridcs[ix][iz];
}
nwrite = fwrite( &hdrs[ix], 1, TRCBYTES, fpcs);
assert(nwrite == TRCBYTES);
nwrite = fwrite( &data_out[ix*nz], sizeof(float), nz, fpcs);
assert(nwrite == nz);
}
fclose(fpcs);
free2float(gridcs);
} /* end of writing S-velocity file */
/* write densities in file */
if (Nr > 0 || getparfloat("ro0", &ro0)) {
strcpy(filename, file_base);
name_ext(filename, "_ro");
fpro = fopen(filename,"w");
assert(fpro != NULL);
for(ix = 0; ix < nx; ix++) {
for(iz = 0; iz < nz; iz++) {
data_out[ix*nz+iz] = gridro[ix][iz];
}
nwrite = fwrite( &hdrs[ix], 1, TRCBYTES, fpro);
assert(nwrite == TRCBYTES);
nwrite = fwrite( &data_out[ix*nz], sizeof(float), nz, fpro);
assert(nwrite == nz); }
fclose(fpro);
free2float(gridro);
} /* end of writing density file */
/* write depths of the interfaces */
if (writeint == 1) {
free(hdrs);
hdrs = (segy *) calloc(Np,sizeof(segy));
for(j = 0; j < Np; j++) {
hdrs[j].fldr = 1;
hdrs[j].timbas = 25;
hdrs[j].f1= orig[0];
hdrs[j].f2= 0.0;
hdrs[j].d1= dx;
hdrs[j].d2= dz;
hdrs[j].ns= nx;
hdrs[j].trwf= Np;
hdrs[j].tracl= j;
hdrs[j].tracf= j;
hdrs[j].trid= TRID_DEPTH;
}
/* note that due to bug in SU, interface file has already been opened */
strcpy(filename, file_base);
name_ext(filename, "_int");
free(data_out);
data_out = (float *)malloc(nx*Np*sizeof(float));
for(jint = 0; jint < Np; jint++) {
for(j = 0; j < nx; j++) {
data_out[jint*nx+j] = inter[jint][j]+orig[1];
}
nwrite = fwrite( &hdrs[jint], 1, TRCBYTES, fpint);
assert(nwrite == TRCBYTES);
nwrite = fwrite( &data_out[jint*nx], sizeof(float), nx, fpint);
assert(nwrite == nx);
}
for(j = 0; j < Np; j++) hdrs[j].fldr = 2;
for(jint = 0; jint < Np; jint++) {
for(j = 0; j < nx; j++) {
data_out[jint*nx+j] = inter[jint+Np][j]+orig[1];
}
nwrite = fwrite( &hdrs[jint], 1, TRCBYTES, fpint);
assert(nwrite == TRCBYTES);
nwrite = fwrite( &data_out[jint*nx], sizeof(float), nx, fpint);
assert(nwrite == nx);
}
fclose(fpint);
} /* end of writing interface file */
if (rayfile == 1) {
FILE *fpout, *fpcurve;
strcpy(filename, file_base);
strcpy(strrchr(filename, '.'), ".mod");
fpout = fopen(filename, "w+");
fprintf(fpout,"RAYTRACE MODEL FILE\n");
fprintf(fpout,"# ASCII file for ray-tracer\n\n");
fprintf(fpout,"# Top interface\n\n");
fprintf(fpout,"x=0,%.1f\n", sizex);
fprintf(fpout,"z=0.,0.\n");
/* for(i = 1; i <= Np; i++) {
fprintf(fpout,"\n# %d th interface\n\nx=",i);
nxp = countnparval(i,"x");
nzp = countnparval(i,"z"); free(x);
free(z);
x = (float *)malloc(nxp*sizeof(float));
z = (float *)malloc(nzp*sizeof(float));
getnparfloat(i,"x",x);
getnparfloat(i,"z",z);
for(j = 0; j < (nxp-1); j ++) fprintf(fpout,"%.1f,", x[j]);
fprintf(fpout,"%.1f\nz=", x[nxp-1]);
for(j = 0; j < (nxp-1); j ++) fprintf(fpout,"%.1f,", z[j]);
fprintf(fpout,"%.1f\n", z[nxp-1]);
}
*/
for(jint = 0; jint < Np; jint++) {
fprintf(fpout,"\n# %d th interface\n\nx=0",jint+1);
sprintf(filename,"curve%d",jint+1);
fpcurve = fopen(filename, "w+");
if (verbose) vmess("writing %d th interface to ascii file %s for usage in su(ps/x)image ",jint+1, filename);
for(j = 0; j < nx; j += skip) {
fprintf(fpout,",%.1f", (float)j*dx);
fprintf(fpcurve,"%.1f %.1f\n", inter[jint][j], orig[0]+(float)j*dx);
}
fclose(fpcurve);
fprintf(fpout,"\nz=%.1f", inter[jint][0]);
for(j = skip; j < nx; j += skip)
fprintf(fpout,",%.1f", inter[jint][j]);
fprintf(fpout,"\n");
}
fprintf(fpout,"\n# %d th interface\n\nx=0",jint+1);
for(j = skip; j < nx; j += skip)
fprintf(fpout,",%.1f", (float)j*dx);
fprintf(fpout,"\nz=%.1f", sizez);
for(j = skip; j < nx; j += skip)
fprintf(fpout,",%.1f", sizez);
fprintf(fpout,"\n");
/**/
fprintf(fpout,"\n\n");
fprintf(fpout,"cp=%.1f,", back[0]);
for(jint = 1; jint <= Np; jint++) {
aver = 0.0;
ncp = countnparval(jint,"cp");
getnparfloat(jint,"cp",cp[2]);
for(j = 0; j < ncp; j++)
aver += cp[2][j];
aver = aver/((float)ncp);
if (jint == Np ) fprintf(fpout,"%.1f", aver);
else fprintf(fpout,"%.1f,", aver);
}
fclose(fpout);
free2float(inter);
}
free(hdrs);
return 0;
}