/* for graceful interrupt termination */
static void closefiles(void)
{
efclose(datafp);
eremove(datafile);
efclose(x2fp);
eremove(x2file);
exit(EXIT_FAILURE);
}
static void closefiles(void)
{
efclose(headerfp);
efclose(tracefp);
eremove(headerfile);
eremove(tracefile);
exit(EXIT_FAILURE);
}
void fig_end(void) {
while (nesting_level != 0)
fprintf(out, "-6 # end <unknown> compound\n");
fprintf(out, "## %s\n", command_line);
if (out != stdout)
efclose(out);
}
char *string_file(const char *fname) {
/*
* read file in dynamically allocated character string
*/
FILE *in = NULL;
char *buf = NULL, cr;
int c;
int buf_size = 1000, i = 0;
/* read as ascii file */
in = (fname == NULL) ? (FILE *) stdin : efopen(fname, "r");
buf = (char *) emalloc(buf_size * sizeof(char));
while ((c = fgetc(in)) != EOF) {
cr = c;
convert_null_to_space(&cr, fname ? fname : "stdin", NULL);
if (i == buf_size) {
buf_size += 1000;
buf = (char *) erealloc(buf, buf_size * sizeof(char));
}
buf[i] = c;
i++;
}
buf[i] = '\0'; /* close string */
if (fname != NULL)
efclose(in); /* close file */
/* free unnecesary memory: */
return (char *) erealloc(buf, (i + 1) * sizeof(char));
}
bool initauxtbl(char *aux) {
char *filename;
FILE * fp ;
int pflen, nread, pfargc, targc, i, j ;
char *argstr, **targv ;
if( !getnpar(0,aux,"s",&filename) ) {
fprintf(stderr,"Can't get auxiliary input %s definition\n",aux) ;
return 0 ;
}
fp = fopen(filename, "r") ;
if( fp == NULL ) {
fprintf(stderr,"Can't open auxiliary input file %s=%s\n",aux,filename);
return 0 ;
}
/* Get the length */
efseek(fp, 0, SEEK_END);
pflen = eftell(fp);
rewind(fp);
argstr = (char *) ealloc1(1+pflen+1, 1);
/* Read the parfile */
nread = efread(argstr+1, 1, pflen, fp);
if (nread != pflen) {
err("%s: fread only %d bytes out of %d from %s",
__FILE__,nread,pflen,filename);
}
efclose(fp);
/* Zap whites in parfile to help in parsing */
argstr[0] = '\0' ;
pfargc = white2null(argstr, pflen);
targc = pfargc ;
/* Allocate space for total arg pointers */
targv = (char **) ealloc1(targc, sizeof(char*));
/* Parse the parfile. Skip over multiple NULLs */
for( j=1, i=0; j < pflen; j++) {
if( argstr[j] && !argstr[j-1] ) {
targv[i++] = argstr + j;
}
}
/* Allocate space for the pointer table */
argtbl = (ArgStruct*) ealloc1(targc, sizeof(ArgStruct));
/* Tabulate targv */
tabulate(targc, targv);
return 1 ;
}
void dump2xplot(float *d,int n1,int n2,int dtype, char *title) {
char cmd[1024] ;
FILE *cmpfp;
/* set up xplot command */
if ( dtype == 0 ) {
sprintf(cmd,"ximage n1=%d n2=%d title=\"%s\"",n1,n2,title) ;
} else {
sprintf(cmd,"xwigb n1=%d n2=%d title=\"%s\"",n1,n2,title) ;
}
/* open pipe */
cmpfp = epopen(cmd,"w");
efwrite(d,sizeof(float),n1*n2,cmpfp);
efclose(cmpfp);
}
/* 创建字符串链表 */
T strlist_new(const char *file)
{
FILE *fp = efopen(file, "r");; /*模式串文件*/
T strlist;
NEW0(strlist);
strlist->file = strdup(file);
strlist->list = list_new(NULL);
strlist->min_strlen = MAX_STR_LEN;
uint64_t line_num = 0;
char buf[MAX_STR_LEN+1]; /*模式串缓存，包括换行符*/
while (fgets(buf, sizeof(buf), fp)) {
line_num++;
char *line_break = strchr(buf, '\n'); /*换行符指针*/
if (line_break) *line_break = '\0';
Str_Len_T len = strlen(buf);
if (len) { /*非空行*/
/* 插入链表末尾 */
list_push_back(strlist->list, strdup(buf));
if (len < strlist->min_strlen)
strlist->min_strlen = len;
else if (len > strlist->max_strlen)
strlist->max_strlen = len;
strlist->total_strlen += len;
strlist->strlen_num[len]++;
}
}
//printf("Total line: %ld\n", line_num);
strlist->str_num = list_len(strlist->list);
/*计算平均串长*/
strlist->avg_strlen = (double) strlist->total_strlen / strlist->str_num;
/* 计算串长标准差 */
strlist->strlen_sd = cal_sd(strlist);
efclose(fp);
return strlist;
}
/* with axis labeling and grids */
void dump2xplotn(float *d,int n1,int n2,int dtype,char *title,
float f1, float f2, float d1, float d2, char *label1, char *label2,
char *grid1, char *grid2) {
char cmd[2048] ;
FILE *cmpfp;
/* set up xplot command */
if ( dtype == 0 ) {
sprintf(cmd,"ximage n1=%d n2=%d title=\"%s\" f1=%g f2=%g d1=%g d2=%g label1=\"%s\" label2=\"%s\" grid1=\"%s\" grid2=\"%s\" \n",
n1,n2,title,f1,f2,d1,d2,label1,label2,grid1,grid2);
} else {
sprintf(cmd,"xwigb n1=%d n2=%d title=\"%s\" f1=%g f2=%g d1=%g d2=%g label1=\"%s\" label2=\"%s\" grid1=\"%s\" grid2=\"%s\"",
n1,n2,title,f1,f2,d1,d2,label1,label2,grid1,grid2) ;
}
/* open pipe */
cmpfp = epopen(cmd,"w");
efwrite(d,sizeof(float),n1*n2,cmpfp);
efclose(cmpfp);
}
void JE_loadPCX( const char *file ) // this is only meant to load tshp2.pcx
{
Uint8 *s = (Uint8 *)VGAScreen->pixels; /* 8-bit specific */
SDL_RWops *f = dir_fopen_die(data_dir(), file, "rb");
efseek(f, -769, SEEK_END);
if (efgetc(f) == 12)
{
for (int i = 0; i < 256; i++)
{
efread(f, &colors[i].r, 1, 1);
efread(f, &colors[i].g, 1, 1);
efread(f, &colors[i].b, 1, 1);
}
}
efseek(f, 128, SEEK_SET);
for (int i = 0; i < 320 * 200; )
{
Uint8 p = efgetc(f);
if ((p & 0xc0) == 0xc0)
{
i += (p & 0x3f);
memset(s, efgetc(f), (p & 0x3f));
s += (p & 0x3f);
} else {
i++;
*s = p;
s++;
}
if (i && (i % 320 == 0))
{
s += VGAScreen->pitch - 320;
}
}
efclose(f);
}
int main(int argc, char **argv)
{
int i,ix,it; /* loop counters */
int wtype; /* =1 psv. =2 sh wavefields */
int wfield; /* =1 displcement =2 velocity =3 acceleration */
int stype; /* source type */
int int_type; /* =1 for trapezoidal rule. =2 for Filon */
int flt; /* =1 apply earth flattening correction */
int rand; /* =1 for random velocity layers */
int qopt; /* some flag ???? */
int vsp; /* =1 for vsp, =0 otherwise */
int win; /* =1 if frequency windowing required */
int verbose; /* flag to output processing information */
int nt; /* samples per trace in output traces */
int ntc; /* samples per trace in computed traces */
int nx; /* number of output traces */
int np; /* number of ray parameters */
int nlint=0; /* number of times layer interp is required */
int lsource; /* layer on top of which the source is located*/
int nw; /* number of frequencies */
int nor; /* number of receivers */
int nlayers; /* number of reflecting layers */
int layern;
int nrand_layers; /* maximum number of random layers permitted */
int nf; /* number of frequencies in output traces */
int *filters_phase=NULL; /* =0 for zero phase, =1 for minimum phase fil*/
int nfilters; /* number of required filters */
int wavelet_type; /* =1 spike =2 ricker1 =3 ricker2 =4 akb */
float dt; /* time sampling interval */
float tsec; /* trace length in seconds */
float fpeak; /* peak frequency for output wavelet */
float fref; /* first frequency */
float p2w; /* maximum ray parameter value */
float bp; /* smallest ray parameter (s/km) */
float bx; /* beginning of range in Kms. */
float fx; /* final range in Kms. */
float dx; /* range increment in Kms. */
float pw1,pw2,pw3,pw4; /* window ray parameters (to apply taper) */
float h1; /* horizontal linear part of the source */
float h2; /* vertical linear part of the source */
float m0; /* seismic moment */
float m1,m2,m3; /* components of the moment tensor */
float delta; /* dip */
float lambda; /* rake */
float phis; /* azimuth of the fault plane */
float phi; /* azimuth of the receiver location */
float sdcl,sdct; /* standar deviation for p and s-wave vels */
float z0=0.0; /* reference depth */
float zlayer; /* thickness of random layers */
int layer; /* layer over on top of which to compute rand*/
float tlag; /* time lag in output traces */
float red_vel; /* erducing velocity */
float w1=0.0; /* low end frequency cutoff for taper */
float w2=0.0; /* high end frequency cutoff for taper */
float wrefp; /* reference frequency for p-wave velocities */
float wrefs; /* reference frequency for s-wave velocities */
float epsp; /* .... for p-wave velocities */
float epss; /* .... for p-wave velocities */
float sigp; /* .... for p-wave velocities */
float sigs; /* .... for s-wave velocities */
float fs; /* sampling parameter, usually 0.07<fs<0.12 */
float decay; /* decay factor to avoid wraparound */
int *lobs; /* layers on top of which lay the receivers */
int *nintlayers=NULL; /* array of number of layers to interpolate */
int *filters_type; /* array of 1 lo cut, 2 hi cut, 3 notch */
float *dbpo=NULL; /* array of filter slopes in db/octave */
float *f1=NULL; /* array of lo frequencies for filters */
float *f2=NULL; /* array of high frequencies for filters */
float *cl; /* array of compressional wave velocities */
float *ql; /* array of compressional Q values */
float *ct; /* array of shear wave velocities */
float *qt; /* array of shear Q values */
float *rho; /* array of densities */
float *t; /* array of absolute layer thickness */
int *intlayers=NULL; /* array of layers to interpolate */
float *intlayth=NULL; /* array of thicknesses over which to interp */
float **wavefield1; /* array for pressure wavefield component */
float **wavefield2=NULL;/* array for radial wavefield component */
float **wavefield3=NULL;/* array for vertical wavefield component */
char *lobsfile=""; /* input file receiver layers */
char *clfile=""; /* input file of p-wave velocities */
char *qlfile=""; /* input file of compressional Q-values */
char *ctfile=""; /* input file of s-wave velocities */
char *qtfile=""; /* input file of shear Q-values */
char *rhofile=""; /* input file of density values */
char *tfile=""; /* input file of absolute layer thicknesses */
char *intlayfile=""; /* input file of layers to interpolate */
char *nintlayfile=""; /* input file of number of layers to interp */
char *intlaythfile=""; /*input file of layer thickness where to inter*/
char *filtypefile=""; /* input file of filter types to apply */
char *fphfile=""; /* input file of filters phases */
char *dbpofile=""; /* input file of filter slopes in db/octave */
char *f1file=""; /* input file of lo-end frequency */
char *f2file=""; /* input file of hi-end frequency */
char *wfp=""; /* output file of pressure */
char *wfr=""; /* output file of radial wavefield */
char *wfz=""; /* output file of vertical wavefield */
char *wft=""; /* output file of tangential wavefield */
char *outf=""; /* output file for processing information */
FILE *wfp_file; /* file pointer to output pressure */
FILE *wfr_file; /* file pointer to output radial wavefield */
FILE *wfz_file; /* file pointer to output vertical wavefield */
FILE *wft_file; /* file pointer to output tangential wavefield*/
FILE *outfp=NULL; /* file pointer to processing information */
FILE *infp; /* file pointer to input information */
/* hook up getpar to handle the parameters */
initargs(argc,argv);
requestdoc(0); /* no input data */
/* get required parameter, seismic moment */
if (!getparfloat("m0",&m0))
err("error: the seismic moment, m0, is a required parameter\n");
/*********************************************************************/
/* get general flags and set their defaults */
if (!getparint("rand",&rand)) rand = 0;
if (!getparint("qopt",&qopt)) qopt = 0;
if (!getparint("stype",&stype)) stype = 1;
if (!getparint("wtype",&wtype)) wtype = 1;
if (!getparint("wfield",&wfield)) wfield = 1;
if (!getparint("int_type",&int_type)) int_type= 1;
if (!getparint("flt",&flt)) flt = 0;
if (!getparint("vsp",&vsp)) vsp = 0;
if (!getparint("win",&win)) win = 0;
if (!getparint("wavelet_type",&wavelet_type)) wavelet_type = 1;
if (!getparint("verbose",&verbose)) verbose = 0;
/* get model parameters and set their defaults */
if (!getparint("lsource",&lsource)) lsource = 0;
if (!getparfloat("fs",&fs)) fs = 0.07;
if (!getparfloat("decay",&decay)) decay = 50.0;
if (!getparfloat("tsec",&tsec)) tsec = 2.048;
/* get response parameters and set their defaults */
if (!getparfloat("fref",&fref)) fref = 1.0;
if (!getparint("nw",&nw)) nw = 100;
if (!getparint("nor",&nor)) nor = 100;
if (!getparint("np",&np)) np = 1300;
if (!getparfloat("p2w",&p2w)) p2w = 5.0;
if (!getparfloat("bx",&bx)) bx = 0.005;
if (!getparfloat("bp",&bp)) bp = 0.0;
if (!getparfloat("fx",&fx)) fx = 0.1;
if (!getparfloat("dx",&dx)) dx = 0.001;
if (!getparfloat("pw1",&pw1)) pw1 = 0.0;
if (!getparfloat("pw2",&pw2)) pw2 = 0.1;
if (!getparfloat("pw3",&pw3)) pw3 = 6.7;
if (!getparfloat("pw4",&pw4)) pw4 = 7.0;
if (!getparfloat("h1",&h1)) h1 = 1.0;
if (!getparfloat("h2",&h2)) h2 = 0.0;
/* get output parameters and set their defaults */
if (!getparint("nx",&nx)) nx = 100;
if (!getparfloat("dt",&dt)) dt = 0.004;
if (!getparint("nt",&nt)) nt = tsec/dt;
if (!getparint("nf",&nf)) nf = 50;
if (!getparfloat("red_vel",&red_vel)) red_vel = 5;
if (!getparfloat("fpeak",&fpeak)) fpeak = 25.;
if (!getparfloat("tlag",&tlag)) tlag = 0.;
/* get names of output files */
if (wtype==1) {
getparstring("wfp",&wfp);
getparstring("wfr",&wfr);
getparstring("wfz",&wfz);
} else if (wtype==2) {
getparstring("wft",&wft);
} else err ("wtype has to be zero or one");
/*********************************************************************/
/* get or compute moment tensor components */
if (stype==1) {
/* get source parameters */
if (!getparfloat("delta",&delta))
err("if stype==1, delta is a required parameter\n");
if (!getparfloat("lambda",&lambda))
err("if stype==1, lambda is a required parameter\n");
if (!getparfloat("phis",&phis))
err("if stype==1, phis is a required parameter\n");
if (!getparfloat("phi",&phi))
err("if stype==1, phi is a required parameter\n");
/* compute moment tensor components */
compute_moment_tensor (wtype, phi, lambda, delta, phis, m0,
&m1, &m2, &m3);
} else if (stype==2) {
/* get moment tensor components from input */
if (!getparfloat("m1",&m1))
err("if stype==2, m1 is a required parameter\n");
if (!getparfloat("m2",&m2))
err("if stype==2, m2 is a required parameter\n");
if (!getparfloat("m3",&m3))
err("if stype==2, m3 is a required parameter\n");
} else err("error, stype flag has to be one or two\n");
/*********************************************************************/
/* if q-option is not requesed, set corresponding parameters to zero */
if (!getparint("layern",&layern)) layern =0;
if (!getparfloat("wrefp",&wrefp)) wrefp =0.0;
if (!getparfloat("wrefs",&wrefs)) wrefs =0.0;
if (!getparfloat("epsp",&epsp)) epsp =0.0;
if (!getparfloat("epss",&epss)) epss =0.0;
if (!getparfloat("sigp",&sigp)) sigp =0.0;
if (!getparfloat("sigs",&sigs)) sigs =0.0;
/*********************************************************************/
/* get number of layers and check input parameters */
if (*clfile=='\0') { /* p-wave vels input from the comand line */
nlayers=countparval("cl");
} else { /* p-wave vels input from a file */
getparint("nlayers",&nlayers);
}
if (*ctfile=='\0') { /* s-wave vels input from the comand line */
if (nlayers !=countparval("cl"))
err("number of p-wave and s-wave velocities"
"has to be the same");
}
if (*qlfile=='\0') { /* compressional q-values from comand line */
if (nlayers !=countparval("ql"))
err("number of p-wave velocities and q-values"
"has to be the same");
}
if (*qtfile=='\0') { /* shear q-values input from comand line */
if (nlayers !=countparval("qt"))
err("number of p-wave velocities and shear q-values"
"has to be the same");
}
if (*rhofile=='\0') { /* densities input from comand line */
if (nlayers !=countparval("rho"))
err("number of p-wave velocities and densities"
"has to be the same");
}
if (*tfile=='\0') { /* layer thicknesses input from comand line */
if (nlayers !=countparval("t"))
err("number of p-wave velocities and thicknesses"
"has to be the same");
}
if (int_type!=1 && int_type!=2) err("int_type flag has to be one or two");
/*********************************************************************/
/* if layer interpolation is requested, get parameters */
if (*intlayfile !='\0') {
getparint("nlint",&nlint);
if ((infp=efopen(intlayfile,"r"))==NULL)
err("cannot open file of layer interp=%s\n",intlayfile);
intlayers=alloc1int(nlint);
fread (intlayers,sizeof(int),nlint,infp);
efclose(infp);
} else if (countparval("intlayers") !=0) {
nlint=countparval("intlayers");
intlayers=alloc1int(nlint);
getparint("intlayers",intlayers);
}
if (*nintlayfile !='\0') {
if ((infp=efopen(nintlayfile,"r"))==NULL)
err("cannot open file of layer inter=%s\n",nintlayfile);
nintlayers=alloc1int(nlint);
fread (nintlayers,sizeof(int),nlint,infp);
efclose(infp);
} else if (countparval("nintlayers") !=0) {
if (nlint !=countparval("nintlayers"))
err("number of values in intlay and nintlay not equal");
nintlayers=alloc1int(nlint);
getparint("nintlayers",nintlayers);
}
if (*intlaythfile !='\0') {
if ((infp=efopen(intlaythfile,"r"))==NULL)
err("cannot open file=%s\n",intlaythfile);
intlayth=alloc1float(nlint);
fread (intlayth,sizeof(int),nlint,infp);
efclose(infp);
} else if (countparval("intlayth") !=0) {
if (nlint !=countparval("intlayth"))
err("# of values in intlay and intlayth not equal");
intlayth=alloc1float(nlint);
getparfloat("intlayth",intlayth);
}
/* update total number of layers */
if (nlint!=0) {
for (i=0; i<nlint; i++) nlayers +=intlayers[i]-1;
}
/*********************************************************************/
/* if random velocity layers requested, get parameters */
if (rand==1) {
getparint("layer",&layer);
getparint("nrand_layers",&nrand_layers);
getparfloat("zlayer",&zlayer);
getparfloat("sdcl",&sdcl);
getparfloat("sdct",&sdct);
} else nrand_layers=0;
/*********************************************************************/
/* allocate space */
cl = alloc1float(nlayers+nrand_layers);
ct = alloc1float(nlayers+nrand_layers);
ql = alloc1float(nlayers+nrand_layers);
qt = alloc1float(nlayers+nrand_layers);
rho = alloc1float(nlayers+nrand_layers);
t = alloc1float(nlayers+nrand_layers);
lobs = alloc1int(nor+1);
lobs[nor]=0;
/*********************************************************************/
/* read input parameters from files or command line */
if (*clfile !='\0') { /* read from a file */
if ((infp=efopen(clfile,"r"))==NULL)
err("cannot open file of pwave velocities=%s\n",clfile);
fread(cl,sizeof(float),nlayers,infp);
efclose(infp);
} else getparfloat("cl",cl); /* get from command line */
if (*qlfile !='\0') {
if ((infp=efopen(qlfile,"r"))==NULL)
err("cannot open file of compressional Q=%s\n",qlfile);
fread(ql,sizeof(float),nlayers,infp);
efclose(infp);
} else getparfloat("ql",ql);
if (*ctfile !='\0') {
if ((infp=efopen(ctfile,"r"))==NULL)
err("cannot open file of swave velocities=%s\n",ctfile);
fread(ct,sizeof(float),nlayers,infp);
efclose(infp);
} else getparfloat("ct",ct);
if (*qtfile !='\0') {
if ((infp=efopen(qtfile,"r"))==NULL)
err("cannot open file of shear Q=%s\n",qtfile);
fread(qt,sizeof(float),nlayers,infp);
efclose(infp);
} else getparfloat("qt",qt);
if (*rhofile !='\0') {
if ((infp=efopen(rhofile,"r"))==NULL)
err("cannot open file of densities=%s\n",rhofile);
fread(rho,sizeof(float),nlayers,infp);
efclose(infp);
} else getparfloat("rho",rho);
if (*tfile !='\0') {
if ((infp=efopen(tfile,"r"))==NULL)
err("cannot open file of thicknesses=%s\n",tfile);
fread(t,sizeof(float),nlayers,infp);
efclose(infp);
} else getparfloat("t",t);
if (*lobsfile !='\0') {
if ((infp=efopen(lobsfile,"r"))==NULL)
err("can't open file of receiver layers=%s\n",lobsfile);
fread(lobs,sizeof(int),nor,infp);
efclose(infp);
} else getparint("lobs",lobs);
/*********************************************************************/
/* if requested, do interpolation and/or parameter adjustment */
if (nlint!=0)
parameter_interpolation (nlayers, intlayers, nintlayers,
intlayth, cl, ql, ct, qt, rho, t);
/* if requested, compute random velocity layers */
if (rand==1) {
random_velocity_layers (&nlayers, &lsource, nrand_layers, sdcl,
sdct, layer, zlayer, cl, ql, ct, qt, rho, t);
}
/* if requested, apply earth flattening approximation */
if (flt==1) {
apply_earth_flattening (nlayers, z0, cl, ct, rho, t);
}
/*********************************************************************/
/* get filter parameters */
if (*filtypefile !='\0') {
if ((infp=efopen(filtypefile,"r"))==NULL)
err("cannot open file=%s\n",filtypefile);
getparint("nfilters",&nfilters);
filters_type=alloc1int(nfilters);
fread (filters_type,sizeof(int),nfilters,infp);
efclose(infp);
} else {
nfilters=countparval("filters_type");
filters_type=alloc1int(nfilters);
getparint("filters_type",filters_type);
}
if (*fphfile !='\0') {
if ((infp=efopen(fphfile,"r"))==NULL)
err("cannot open file=%s\n",fphfile);
filters_phase=alloc1int(nfilters);
fread (filters_phase,sizeof(float),nfilters,infp);
efclose(infp);
} else if (nfilters == countparval("filters_phase")) {
filters_phase=alloc1int(nfilters);
getparint("filters_phase",filters_phase);
} else err("number of elements infilterstype and phase must be equal");
if (*dbpofile !='\0') {
if ((infp=efopen(dbpofile,"r"))==NULL)
err("cannot open file=%s\n",dbpofile);
dbpo=alloc1float(nfilters);
fread (dbpo,sizeof(float),nfilters,infp);
efclose(infp);
} else if (nfilters == countparval("dbpo")) {
dbpo=alloc1float(nfilters);
getparfloat("dbpo",dbpo);
} else err("number of elements in filters_type and dbpo must be equal");
if (*f1file !='\0') {
if ((infp=efopen(f1file,"r"))==NULL)
err("cannot open file=%s\n",f1file);
f1=alloc1float(nfilters);
fread (f1,sizeof(float),nfilters,infp);
efclose(infp);
} else if (nfilters == countparval("f1")) {
f1=alloc1float(nfilters);
getparfloat("f1",f1);
} else err("number of elements in filters_type and f1 must be equal");
if (*f2file !='\0') {
if ((infp=efopen(f2file,"r"))==NULL)
err("cannot open file=%s\n",f2file);
f2=alloc1float(nfilters);
fread (f2,sizeof(float),nfilters,infp);
efclose(infp);
} else if (nfilters == countparval("f2")) {
f2=alloc1float(nfilters);
getparfloat("f2",f2);
} else err("number of elements in filters_type and f2 must be equal");
/*********************************************************************/
/* allocate space for wavefield computations */
wavefield1=alloc2float(nt,nx);
if (wtype==1) {
wavefield2=alloc2float(nt,nx);
wavefield3=alloc2float(nt,nx);
}
/* get name of output file for processing information */
if (verbose==2||verbose==3) {
if (!getparstring("outf",&outf)) outf="info";
if ((outfp=efopen(outf,"w"))==NULL) {
warn("cannot open processing file =%s, no processing\n"
"information file will be generated\n",outf);
verbose=1;
}
}
/* initialize wavefields */
if (wtype==1) {
for (ix=0;ix<nx;ix++) {
for (it=0;it<nt;it++) {
wavefield1[ix][it]=0.0;
wavefield2[ix][it]=0.0;
wavefield3[ix][it]=0.0;
}
}
} else if (wtype==2) {
for (ix=0;ix<nx;ix++) {
for (it=0;it<nt;it++) {
wavefield1[ix][it]=0.0;
}
}
}
/* number of time samples in computed traces */
ntc=tsec/dt;
if (int_type==2) bp=0.0;
/*********************************************************************/
/* Now, compute the actual reflectivities */
compute_reflectivities (int_type, verbose, wtype, wfield, vsp, flt,
win, nx, nt, ntc, nor, nf, nlayers, lsource, layern, nfilters,
filters_phase, nw, np, bp, tlag, red_vel, w1, w2, fx, dx, bx,
fs, decay, p2w, tsec, fref, wrefp, wrefs, epsp, epss, sigp,
sigs, pw1, pw2, pw3, pw4, h1, h2, m1, m2, m3, fref, lobs,
filters_type, dbpo, f1, f2, cl, ct, ql, qt, rho, t, wavefield1,
wavefield2, wavefield3, outfp);
/*********************************************************************/
/* if open, close processing information file */
if (verbose==2||verbose==3) efclose(outfp);
/* convolve with a wavelet and write the results out */
if (wtype==1) { /* PSV */
/* convolve with a wavelet to produce the seismograms */
convolve_wavelet (wavelet_type, nx, nt, dt, fpeak, wavefield1);
convolve_wavelet (wavelet_type, nx, nt, dt, fpeak, wavefield2);
convolve_wavelet (wavelet_type, nx, nt, dt, fpeak, wavefield3);
/* output results in SU format */
if(*wfp!='\0'){
if ((wfp_file=efopen(wfp,"w"))==NULL)
err("cannot open pressure file=%s\n",wfp);
{ register int ix;
for (ix=0; ix<nx; ix++) {
for (it=0; it<nt; it++)
tr1.data[it]=wavefield1[ix][it];
/* headers*/
tr1.ns=nt;
tr1.dt=1000*(int)(1000*dt);
tr1.offset=(bx+ix*dx)*1000;
/* output trace */
fputtr(wfp_file, &tr1);
}
efclose (wfp_file);
}
}
if (*wfr !='\0') {
if ((wfr_file=efopen(wfr,"w"))==NULL)
err("cannot open radial wfield file=%s\n",wfr);
{ register int ix;
for (ix=0; ix<nx; ix++) {
for (it=0; it<nt; it++)
tr2.data[it]=wavefield2[ix][it];
tr2.ns=nt;
tr2.dt=1000*(int)(1000*dt);
tr2.offset=(bx+ix*dx)*1000;
fputtr(wfr_file, &tr2);
}
efclose (wfr_file);
}
}
if (*wfz !='\0') {
if ((wfz_file=efopen(wfz,"w"))==NULL)
err("canno open vertical field file=%s\n",wfz);
{ register int ix;
for (ix=0; ix<nx; ix++) {
for (it=0; it<nt; it++)
tr3.data[it]=wavefield3[ix][it];
tr3.ns=nt;
tr3.dt=1000*(int)(1000*dt);
tr3.offset=(bx+ix*dx)*1000;
fputtr(wfz_file, &tr3);
}
efclose (wfz_file);
}
}
/* free allocated space */
free2float(wavefield1);
free2float(wavefield2);
free2float(wavefield3);
} else if (wtype==2) { /* SH */
/* convolve with a wavelet to produce the seismogram */
convolve_wavelet (wavelet_type, nx, nt, dt, fpeak, wavefield1);
/* output the result in SU format */
if (*wft !='\0') {
if ((wft_file=efopen(wft,"w"))==NULL)
err("cannot open tangential file=%s\n",wft);
{ register int ix;
for (ix=0; ix<nx; ix++) {
for (it=0; it<nt; it++)
tr1.data[it]=wavefield1[ix][it];
tr1.ns=nt;
tr1.dt=1000*(int)(1000*dt);
tr1.offset=(bx+ix*dx)*1000;
fputtr(wft_file, &tr1);
}
efclose (wft_file);
}
}
/* free allocated space */
free2float(wavefield1);
}
/* free workspace */
free1float(cl);
free1float(ct);
free1float(ql);
free1float(qt);
free1float(rho);
free1float(t);
free1int(lobs);
free1int(filters_type);
free1int(filters_phase);
free1float(dbpo);
free1float(f1);
free1float(f2);
return EXIT_SUCCESS;
}
main(int argc, char **argv)
{
FILE *fpr, *fpw;
char msg[BUFSIZ];
char erbuf[BUFSIZ], ewbuf[BUFSIZ], rbuf[BUFSIZ], wbuf[BUFSIZ];
char pbuf[1], pfbuf[1];
size_t mbytes, rbytes, wbytes;
size_t ritems, witems;
initargs(argc, argv);
/* Exercise efread and efwrite */
fpw = efopen("junk.fwr", "w+");
strcpy(ewbuf, " Writing with efwrite\n");
witems = strlen(ewbuf);
efwrite(ewbuf, 1, witems, fpw);
erewind(fpw);
fread(rbuf, 1, witems, fpw);
erewind(fpw);
strcpy(msg, "***efwrite from file to buffer ...");
mbytes = strlen(msg);
fwrite(msg, 1, mbytes, stdout);
fwrite(rbuf, 1, witems, stdout);
fpr = fopen("junk.frd", "w+");
strcpy(wbuf, " Reading with efread\n");
ritems = strlen(wbuf);
fwrite(wbuf, 1, ritems, fpr);
erewind(fpr);
strcpy(wbuf, " efread saw zero bytes\n");
witems = strlen(wbuf);
strcpy(msg, "***efread from file to buffer ...");
mbytes = strlen(msg);
fwrite(msg, 1, mbytes, stdout);
if (!efread(erbuf, 1, ritems, fpr)) {
fwrite(wbuf, 1, witems, stdout);
} else {
fwrite(erbuf, 1, ritems, stdout);
}
erewind(fpr);
strcpy(wbuf, " Reading byte by byte with efread\n");
ritems = strlen(wbuf);
fwrite(wbuf, 1, ritems, fpr);
erewind(fpr);
strcpy(wbuf, " exit loop: efread returned zero\n");
witems = strlen(wbuf);
strcpy(msg, "***efread file byte by byte to buffer ...");
mbytes = strlen(msg);
fwrite(msg, 1, mbytes, stdout);
while (efread(erbuf, 1, 1, fpr)) {
fwrite(erbuf, 1, 1, stdout);
}
erewind(fpr);
fwrite(wbuf, 1, witems, stdout);
strcpy(wbuf, "");
ritems = strlen(wbuf);
fwrite(wbuf, 1, ritems, fpr);
erewind(fpr);
strcpy(wbuf, " efread saw zero bytes\n");
witems = strlen(wbuf);
strcpy(msg, "***efread from EMPTY file to buffer ...");
mbytes = strlen(msg);
fwrite(msg, 1, mbytes, stdout);
efread(erbuf, 1, ritems, fpr);
erewind(fpr);
fwrite(wbuf, 1, witems, stdout);
efclose(fpw);
efclose(fpr);
eremove("junk.frd");
eremove("junk.fwr");
return EXIT_SUCCESS;
}
main(int argc, char **argv)
{
char plotcmd[BUFSIZ]; /* build ximage command for popen */
float *trbuf; /* trace buffer */
FILE *datafp; /* fp for trace data file */
FILE *plotfp; /* fp for plot data */
int nt; /* number of samples on trace */
int ntr; /* number of traces */
float d1; /* time/depth sample rate */
float d2; /* trace/dx sample rate */
float f1; /* tmin/zmin */
float f2; /* tracemin/xmin */
bool seismic; /* is this seismic data? */
int panel; /* panel to pick */
int dtype; /* type of display */
int ppos; /* position of the panel */
FILE *infp=stdin;
int n3,n2,n1;
/* Initialize */
initargs(argc, argv);
askdoc(1);
/* Get info from headers and first trace */
fgethdr(infp,&ch,&bh);
n1 = bh.hns;
if(!getparint("ntpp",&n2)) {
if (bh.tsort==2) {
n2 = bh.fold;
} else {
n2 = bh.ntrpr;
}
}
if (!fgettr(infp,&tr)) err("can't get first trace");
nt = tr.ns;
if ( n1!=nt )
warn("samples/trace in bhdr and trhdr different; trhdr used! \n");
n1 = nt;
fseek(infp,0L,2);
n3=(ftell(infp)-EBCBYTES-BNYBYTES)/(n1*sizeof(float)+HDRBYTES)/n2;
if(n3==0) {
n3=1;
n2=(ftell(infp)-EBCBYTES-BNYBYTES)/(n1*sizeof(float)+HDRBYTES);
warn("less traces were found in input! \n");
}
fseek(infp,0L,0);
seismic = (tr.trid == 0 || tr.trid == TREAL);
if (!getparint("panel", &panel)) panel=1;
if (!getparint("dtype", &dtype)) dtype=0;
if (!getparfloat("d1", &d1)) {
if (seismic) {
/* sampling interval in ms or in m (ft) */
if ( tr.dz!=0. ) {
d1 = tr.dz;
} else if (tr.dt) {
d1 = (float) tr.dt / 1000.0;
if (tr.dt<1000) d1 = tr.dt;
} else {
d1 = 0.004 * 1000.;
warn("tr.dt not set, assuming dt=4");
}
} else { /* non-seismic data */
if (tr.d1) {
d1 = tr.d1;
} else {
d1 = 1.0;
warn("tr.d1 not set, assuming d1=1.0");
}
}
}
if (!getparfloat("d2", &d2)) {
if(bh.tsort==2) {
d2 = tr.offset;
}
else {
d2 = tr.cdp;
}
}
if (!getparfloat("f1", &f1)) {
if (seismic) {
f1 = (tr.delrt) ? (float) tr.delrt/1000.0 : 0.0;
if(tr.delrt<1000) f1=tr.delrt;
if(tr.dz!=0.) f1=tr.fz;
} else {
f1 = (tr.f1) ? tr.f1 : 0.0;
}
}
if (!getparfloat("f2", &f2)) {
if (bh.tsort==2) {
f2 = tr.offset;
}
else {
f2 = tr.cdp;
}
}
/* Allocate trace buffer */
trbuf = ealloc1float(nt);
/* Create temporary "file" to hold data */
datafp = etempfile(NULL);
/* Loop over input traces & put them into the data file */
ntr = 0;
fseek(infp,EBCBYTES+BNYBYTES+(panel-1)*n2*(n1*sizeof(float)+HDRBYTES),0);
for(ntr=0;ntr<n2;ntr++) {
if(!fgettr(infp,&tr)) err("get trace error \n");
efwrite(tr.data, FSIZE, nt, datafp);
if(ntr==1) {
if (bh.tsort==2) {
if(!getparfloat("d2",&d2)) d2 = tr.offset-d2;
if (!getparint("ppos", &ppos)) ppos = tr.cdp;
} else {
if(!getparfloat("d2",&d2)) d2 = tr.cdp-d2;
if (!getparint("ppos", &ppos)) ppos = tr.offset;
}
}
}
/* Set up xipick or xwpick command line */
if ( dtype == 0 ) {
sprintf(plotcmd,
"mipick n1=%d n2=%d d1=%f d2=%f f1=%f f2=%f ppos=%d",
n1, n2, d1, d2, f1, f2, ppos);
} else {
sprintf(plotcmd,
"mwpick n1=%d n2=%d d1=%f d2=%f f1=%f f2=%f ppos=%d",
n1, n2, d1, d2, f1, f2, ppos);
}
for (--argc, ++argv; argc; --argc, ++argv) {
if (strncmp(*argv, "d1=", 3) && /* skip those already set */
strncmp(*argv, "d2=", 3) &&
strncmp(*argv, "f1=", 3) &&
strncmp(*argv, "f2=", 3)) {
strcat(plotcmd, " "); /* put a space between args */
strcat(plotcmd, "\""); /* user quotes are stripped */
strcat(plotcmd, *argv); /* add the arg */
strcat(plotcmd, "\""); /* user quotes are stripped */
}
}
/* Open pipe; read data to buf; write buf to plot program */
plotfp = epopen(plotcmd, "w");
rewind(datafp);
{ register int itr;
for (itr = 0; itr < ntr; ++itr) {
efread (trbuf, FSIZE, nt, datafp);
efwrite(trbuf, FSIZE, nt, plotfp);
}
}
/* Clean up */
epclose(plotfp);
efclose(datafp);
return EXIT_SUCCESS;
}
int main(int argc, char **argv) {
int gelev_vmin, gelev_vmax, selev_vmin, selev_vmax;
int gelev_min, gelev_max, selev_min, selev_max;
int gelev_globalmin, gelev_globalmax, selev_globalmin, selev_globalmax;
int gelev_num, selev_num;
int imin, iminv, ifirst, nz1, nz, ns, ntr, ntrv, nsv;
double dfirst, delrt, delrtv, twt, dt, dtv, factor, z, amp_out;
double *depth, *tr_amp;
float ***velocity;
short verbose;
register int i, j, k, l;
cwp_String vfile;
FILE *fv;
initargs(argc, argv);
requestdoc (0);
if (!getparshort("verbose", &verbose)) verbose = 1;
if (!getparstring("vfile",&vfile)) vfile = "output.su";
ntr = gettra (&tr, 0);
fv = efopen (vfile, "r");
ntrv = fgettra (fv, &vtr, 0);
delrt = tr.delrt;
delrtv = vtr.delrt;
if (!getparint("ns", &ns)) ns = tr.ns;
if (!getparint("nsv", &nsv)) nsv = vtr.ns;
if (!getparint("nz", &nz)) nz=2000;
dt = tr.dt * 0.001;
dtv = vtr.dt * 0.001;
imin = nint ( delrt / dt );
iminv = nint ( delrtv / dtv );
depth = ealloc1double ( ns );
tr_amp = ealloc1double ( ns );
factor = 0.0005;
if ( verbose ) {
fprintf ( stderr, "\n" );
fprintf ( stderr, "Number of input traces = %d\n", ntr );
fprintf ( stderr, "Number of input samples per trace = %d\n", ns );
fprintf ( stderr, "Number of output samples per trace = %d\n", nz );
fprintf ( stderr, "Sample rate = %f ms.\n", dt );
fprintf ( stderr, "Average velocity SU file name = %s\n", vfile );
fprintf ( stderr, "Number of VAVG input traces = %d\n", ntrv );
fprintf ( stderr, "Number of VAVG input samples per trace = %d\n", nsv );
fprintf ( stderr, "VAVG Sample rate = %f ms.\n", dtv );
fprintf ( stderr, "Input Delay = %f ms., First sample = %d\n", delrt, imin );
fprintf ( stderr, "Velocity Delay = %f ms., First sample = %d\n", delrtv, iminv );
fprintf ( stderr, "\n" );
}
rewind ( fv );
gelev_vmin = selev_vmin = INT_MAX;
gelev_vmax = selev_vmax = INT_MIN;
for ( i = 0; i < ntrv; ++i ) {
fgettr (fv, &vtr);
gelev_vmin = min ( gelev_vmin, vtr.gelev );
gelev_vmax = max ( gelev_vmax, vtr.gelev );
selev_vmin = min ( selev_vmin, vtr.selev );
selev_vmax = max ( selev_vmax, vtr.selev );
}
if ( verbose ) fprintf ( stderr, "VELOCITY DATA - gelev_vmin = %d, gelev_vmax = %d, selev_vmin = %d, selev_vmax = %d\n", gelev_vmin, gelev_vmax, selev_vmin, selev_vmax );
rewind (stdin);
gelev_min = selev_min = INT_MAX;
gelev_max = selev_max = INT_MIN;
for ( i = 0; i < ntr; ++i ) {
gettr (&tr);
gelev_min = min ( gelev_min, tr.gelev );
gelev_max = max ( gelev_max, tr.gelev );
selev_min = min ( selev_min, tr.selev );
selev_max = max ( selev_max, tr.selev );
}
if ( verbose ) fprintf ( stderr, "INPUT DATA - gelev_min = %d, gelev_max = %d, selev_min = %d, selev_max = %d\n", gelev_min, gelev_max, selev_min, selev_max );
gelev_globalmin = max ( gelev_min, gelev_vmin );
selev_globalmin = max ( selev_min, selev_vmin );
gelev_globalmax = min ( gelev_max, gelev_vmax );
selev_globalmax = min ( selev_max, selev_vmax );
gelev_num = gelev_globalmax - gelev_globalmin + 1;
selev_num = selev_globalmax - selev_globalmin + 1;
if ( verbose ) {
fprintf ( stderr, "\n" );
fprintf ( stderr, "gelev_globalmin = %d, gelev_globalmax = %d, selev_globalmin = %d, selev_globalmax = %d\n", gelev_globalmin, gelev_globalmax, selev_globalmin, selev_globalmax );
fprintf ( stderr, "gelev_num = %d, selev_num = %d\n", gelev_num, selev_num );
}
velocity = ealloc3float ( nsv, selev_num, gelev_num );
rewind ( fv );
ifirst = 0;
dfirst = 9999999999999999.9;
for ( k = 0; k < ntrv; ++k ) {
fgettr (fv, &vtr);
if ( vtr.gelev >= gelev_globalmin && vtr.gelev <= gelev_globalmax && vtr.selev >= selev_globalmin && vtr.selev <= selev_globalmax ) {
i = vtr.gelev - gelev_globalmin;
j = vtr.selev - selev_globalmin;
memcpy( (void *) &velocity[i][j][0], (const void *) &vtr.data, nsv * FSIZE );
dfirst = min ( dfirst, velocity[i][j][0] * delrtv * factor );
}
}
efclose (fv);
ifirst = nint ( dfirst / dt );
nz1 = nz - ifirst;
if ( verbose ) fprintf ( stderr, "ifirst = %d, dfirst = %f, nz1 = %d\n", ifirst, dfirst, nz1 );
float zero;
double depth_max;
zero = 0.0;
rewind (stdin);
for ( l = 0; l < ntr; ++l ) {
gettr (&tr);
if ( tr.gelev >= gelev_globalmin && tr.gelev <= gelev_globalmax && tr.selev >= selev_globalmin && tr.selev <= selev_globalmax ) {
i = tr.gelev - gelev_globalmin;
j = tr.selev - selev_globalmin;
for ( k = 0; k < nsv; ++k ) {
twt = ( k * dtv ) + delrtv;
tr_amp[k] = tr.data[k+iminv];
depth[k] = velocity[i][j][k] * twt * factor;
}
depth_max = depth[nsv-1];
fprintf ( stderr, "trace number = %5d, depth_max = %f\n", l, depth_max );
for ( k=ifirst; k < nz1; ++k ) {
z = k * dt;
if ( z <= depth_max ) {
dintlin ( nsv, depth, tr_amp, tr_amp[0], tr_amp[nsv-1], 1, &z, &_out );
tr.data[k-ifirst] = (float) amp_out;
} else {
tr.data[k-ifirst] = zero;
}
}
tr.trid = 1;
tr.ns = nsv;
tr.delrt = nint ( dfirst );
tr.dt = nint(dt*1000);
puttr (&tr);
}
}
free1double (tr_amp);
free1double (depth);
free3float (velocity);
return EXIT_SUCCESS;
}
int
main(int argc, char **argv)
{
int nx1,nx2; /* numbers of samples */
int ix1, ix2; /* sample indices */
float a1,a2; /* filter dimensions */
float pi; /* pi number */
float vmax; /* maximum value of the data */
float vfmax; /* scale factor after filtering */
float c1,c2;
float **v=NULL; /* array of velocities */
float *k1=NULL,*k2=NULL; /* wavenumber arrays */
float *kfilt1=NULL,*kfilt2=NULL;/* intermediate filter arrays */
float dk1,dk2; /* wavenumber interval */
float **kfilter=NULL; /* array of filter values */
int nx1fft,nx2fft; /* dimensions after padding for FFT */
int nK1,nK2; /* transform dimension */
int ik1,ik2; /* wavenumber indices */
register complex **ct=NULL; /* complex FFT workspace */
register float **rt=NULL; /* float FFT workspace */
FILE *tracefp=NULL; /* temp file to hold traces */
FILE *hfp=NULL; /* temp file to hold trace headers */
/* hook up getpar to handle the parameters */
initargs(argc, argv);
requestdoc(1);
/* Get parameters from command line */
if (!getparfloat("a1",&a1)) a1=0.;
if (!getparfloat("a2",&a2)) a2=0.;
/* Get info from first trace */
if (!gettr(&tr)) err("can't get first trace");
if (tr.trid != TRID_DEPTH) warn("tr.trid=%d",tr.trid);
nx1=tr.ns;
/* Store traces in tmpfile while getting a count */
tracefp=etmpfile();
hfp=etmpfile();
nx2=0;
do {
++nx2;
efwrite(&tr,HDRBYTES, 1, hfp);
efwrite(tr.data, FSIZE, nx1, tracefp);
} while (gettr(&tr));
/* Determine number of wavenumbers in K1 and K2 */
nx1fft=npfaro(nx1, LOOKFAC*nx1);
nx2fft=npfa(nx2);
if (nx1fft >=SU_NFLTS || nx1fft >= PFA_MAX)
err("Padded nx1=%d--too big",nx1fft);
if (nx2fft >= PFA_MAX)
err("Padded nx2=%d--too big",nx2fft);
/* Determine number of wavenumbers in K1 and K2 */
nK1=nx1fft/2 + 1;
nK2=nx2fft/2 + 1;
/* Allocate space */
v=alloc2float(nx1,nx2);
rt=alloc2float(nx1fft,nx2fft);
ct=alloc2complex(nK1,nx2fft);
kfilter=alloc2float(nx1fft,nx2fft);
k1=alloc1float(nK1);
k2=alloc1float(nK2);
kfilt1= alloc1float(nK1);
kfilt2= alloc1float(nK2);
/* Zero all arrays */
memset((void *) rt[0], 0, nx1fft*nx2fft*FSIZE);
memset((void *) kfilter[0], 0, nx1fft*nx2fft*FSIZE);
memset((void *) ct[0], 0, nK1*nx2fft*sizeof(complex));
memset((void *) k1, 0, nK1*FSIZE);
memset((void *) k2, 0, nK2*FSIZE);
memset((void *) kfilt1, 0, nK1*FSIZE);
memset((void *) kfilt2, 0, nK2*FSIZE);
/* Determine wavenumber arrays for the filter */
pi=PI;
dk1=2*pi / nx1fft;
dk2=2*pi / nx2fft;
for (ik1=0; ik1<nK1; ++ik1) {
c1=a1*ik1*dk1/ 2;
kfilt1[ik1]= exp(-pow(c1,2));
}
for (ik2=0; ik2<nK2; ++ik2) {
c2= a2*ik2*dk2/2;
kfilt2[ik2]= exp(-pow(c2,2));
}
/* Build Gaussian filter */
/* positive k1, positive k2 */
for (ik2=0; ik2<nK2; ++ik2) {
for (ik1=0; ik1<nK1; ++ik1) {
kfilter[ik2][ik1]=kfilt2[ik2]*kfilt1[ik1];
}
}
/* positive k1, negative k2 */
for (ik2=nK2; ik2<nx2fft; ++ik2) {
for (ik1=0; ik1<nK1; ++ik1) {
kfilter[ik2][ik1]=kfilt2[nx2fft-ik2]*kfilt1[ik1];
}
}
/* Read velocities from temp file and determine maximum */
rewind(tracefp);
fread(v[0],sizeof(float),nx2*nx1,tracefp);
vmax=v[0][0];
for (ix2=0; ix2<nx2; ++ix2) {
for (ix1=0; ix1<nx1; ++ix1) {
vmax=MAX(vmax,v[ix2][ix1]);
}
}
/* Load data into FFT arrays */
rewind(tracefp);
for (ix2=0; ix2<nx2; ++ix2) {
efread(rt[ix2], FSIZE, nx1, tracefp);
}
/* Fourier transform dimension 1 */
pfa2rc(-1,1,nx1fft,nx2,rt[0],ct[0]);
/* Fourier transform dimension 2 */
pfa2cc(-1,2,nK1,nx2fft,ct[0]);
/* Apply filter to the data */
for (ik2=0; ik2<nx2fft; ++ik2) {
for (ik1=0; ik1<nK1; ++ik1) {
ct[ik2][ik1]=crmul(ct[ik2][ik1], kfilter[ik2][ik1]) ;
}
}
/* Inverse Fourier transformation dimension 2 */
pfa2cc(1,2,nK1,nx2fft,ct[0]);
/* Inverse Fourier transformation dimension 1 */
pfa2cr(1,1,nx1fft,nx2,ct[0],rt[0]);
/* Find maximum of filtered data */
vfmax=rt[0][0];
for (ix2=0; ix2<nx2; ++ix2) {
for (ix1=0; ix1<nx1; ++ix1) {
vfmax=MAX(vfmax,rt[ix2][ix1]);
}
}
/* Rescale and output filtered data */
erewind(hfp);
for (ix2=0; ix2<nx2; ++ix2) {
efread(&tr, HDRBYTES, 1, hfp);
for (ix1=0; ix1<nx1; ++ix1)
tr.data[ix1]=(rt[ix2][ix1]) * vmax / vfmax;
puttr(&tr);
}
efclose(hfp);
return(CWP_Exit());
}
int
main(int argc, char **argv)
{
cwp_String key[SU_NKEYS]; /* array of keywords */
cwp_String type[SU_NKEYS]; /* array of keywords */
int index[SU_NKEYS]; /* name of type of getparred key */
int ikey; /* key counter */
int nkeys; /* number of header fields set */
int count=0; /* number of header fields from file */
double i; /* parameters for computing fields */
int itr = 0; /* trace counter */
Value val; /* value of key field */
char *infile=""; /* name of input file of header values */
FILE *infp=NULL; /* pointer to input file */
cwp_Bool from_file=cwp_false; /* is the data from infile? */
float *afile=NULL; /* array of "a" values from file */
double *a=NULL; /* array of "a" values */
double *b=NULL; /* array of "b" values */
double *c=NULL; /* array of "c" values */
double *d=NULL; /* array of "d" values */
double *j=NULL; /* array of "j" values */
int n; /* number of a,b,c,d,j values */
/* Initialize */
initargs(argc, argv);
requestdoc(1);
/* Get "key" values */
if ((nkeys=countparval("key"))!=0) {
getparstringarray("key",key);
} else {
key[0]="cdp";
}
/* get types and indexes corresponding to the keys */
for (ikey=0; ikey<nkeys; ++ikey) {
type[ikey]=hdtype(key[ikey]);
index[ikey]=getindex(key[ikey]);
}
/* get name of infile */
getparstring("infile",&infile);
/* if infile is specified get specified keys from file */
if (*infile!='\0') {
/* open infile */
if((infp=efopen(infile,"r"))==NULL)
err("cannot open infile=%s\n",infile);
/* set from_file flag */
from_file=cwp_true;
}
/* If not from file, getpar a,b,c,d,j */
if (!from_file) {
/* get "a" values */
if ((n=countparval("a"))!=0) {
if (n!=nkeys)
err("number of a values not equal to number of keys");
a=ealloc1double(n);
getpardouble("a",a);
} else {
a=ealloc1double(nkeys);
for (ikey=0; ikey<nkeys; ++ikey) a[ikey]=0.;
}
/* get "b" values */
if ((n=countparval("b"))!=0) {
if (n!=nkeys)
err("number of b values not equal to number of keys");
b=ealloc1double(n);
getpardouble("b",b);
} else {
b=ealloc1double(nkeys);
for (ikey=0; ikey<nkeys; ++ikey) b[ikey]=0.;
}
/* get "c" values */
if ((n=countparval("c"))!=0) {
if (n!=nkeys)
err("number of c values not equal to number of keys");
c=ealloc1double(n);
getpardouble("c",c);
} else {
c=ealloc1double(nkeys);
for (ikey=0; ikey<nkeys; ++ikey) c[ikey]=0.;
}
/* get "d" values */
if ((n=countparval("d"))!=0) {
if (n!=nkeys)
err("number of d values not equal to number of keys");
d=ealloc1double(n);
getpardouble("d",d);
} else {
d=ealloc1double(nkeys);
for (ikey=0; ikey<nkeys; ++ikey) d[ikey]=0.;
}
/* get "j" values */
if ((n=countparval("j"))!=0) {
if (n!=nkeys)
err("number of j values not equal to number of keys");
j=ealloc1double(n);
getpardouble("j",j);
/* make sure that j!=0 */
for (ikey=0; ikey<nkeys; ++ikey)
if(j[ikey]==0) j[ikey]=ULONG_MAX;
} else {
j=ealloc1double(nkeys);
for (ikey=0; ikey<nkeys; ++ikey) j[ikey]=ULONG_MAX;
}
} else { /* if reading from a file */
/* allocate space for afile */
afile=ealloc1float(nkeys);
}
checkpars();
/* loop over traces */
while (gettr(&tr)) {
if (from_file) {
/* use the "a" value from file to trace by trace */
if (efread(afile,FSIZE,nkeys,infp)!=0) {
for (ikey=0; ikey<nkeys; ++ikey) {
double a_in;
a_in=(double) afile[ikey];
setval(type[ikey],&val,a_in,
0,0,0,ULONG_MAX);
puthval(&tr,index[ikey],&val);
++count;
}
}
} else { /* use getparred values of a,b,c,d,j */
for (ikey=0; ikey<nkeys; ++ikey) {
i = (double) itr + d[ikey];
setval(type[ikey],&val,a[ikey],b[ikey],
c[ikey],i,j[ikey]);
puthval(&tr,index[ikey],&val);
}
}
++itr;
puttr(&tr);
}
if (from_file) {
efclose(infp);
if (count < (int)(itr*nkeys) ) {
warn("itr=%d > count=%d %s",(int) itr*count,count);
warn("n traces=%d > data count =%d",(itr*nkeys),count);
}
}
return(CWP_Exit());
}
void write_points(const char *fname, DATA *d, DPOINT *where, double *est,
int n_outfl) {
static FILE *f = NULL;
#ifdef HAVE_LIBGIS
static Site *site = NULL;
static int dim = 2;
int i;
#endif
if (! grass()) {
if (where == NULL) {
if (fname != NULL) {
f = efopen(fname, "w");
write_ascii_header(f, d, n_outfl);
} else
efclose(f);
} else {
if (f == NULL)
ErrMsg(ER_NULL, "write_points(): f");
output_line(f, d, where, est, n_outfl);
}
} else {
#ifdef HAVE_LIBGIS
if (where == NULL) {
if (fname != NULL) { /* initialize: */
DUMP("opening grass sites list\n");
if (d->mode & Z_BIT_SET)
dim++;
if ((f = G_sites_open_new((char *) fname)) == NULL)
G_fatal_error("%s: cannot open sites file %f for writing\n",
G_program_name());
site = G_site_new_struct(CELL_TYPE, dim, 0, n_outfl);
} else { /* close: */
DUMP("closing grass sites list\n");
fclose(f);
dim = 2;
G_site_free_struct(site);
site = NULL;
}
} else {
assert(site != NULL);
assert(d != NULL);
/* fill site: */
site->east = where->x;
site->north = where->y;
if (d->mode & Z_BIT_SET)
site->dim[0] = where->z;
if (d->mode & S_BIT_SET)
site->ccat = where->u.stratum + strata_min;
else
site->ccat = GET_INDEX(where) + 1;
for (i = 0; i < n_outfl; i++) {
if (is_mv_double(&(est[i]))) {
site->dbl_att[i] = -9999.0;
if (DEBUG_DUMP)
printlog(" [%d]:mv ", i);
} else {
site->dbl_att[i] = est[i];
if (DEBUG_DUMP)
printlog(" value[%d]: %g ", i, site->dbl_att[i]);
}
}
if (DEBUG_DUMP)
printlog("\n");
G_site_put(f, site);
}
#else
ErrMsg(ER_IMPOSVAL, "gstat/grass error: libgis() not linked");
#endif
}
}
int
main (int argc, char **argv)
{
int nt; /* number of time samples */
int ntau; /* number of migrated time samples */
int nx; /* number of midpoints */
int ik,ix,it,itau,itmig;/* loop counters */
int nxfft; /* fft size */
int nk; /* number of wave numbers */
int ntmig,nvmig;
float dt; /* time sampling interval */
float ft; /* first time sample */
float dtau; /* migrated time sampling interval */
float ftau; /* first migrated time value */
float dk; /* wave number sampling interval */
float fk; /* first wave number */
float Q, ceil; /* quality factor, ceiling of amplitude */
float t,k; /* time,wave number */
float *tmig, *vmig; /* arrays of time, interval velocities */
float dx; /* spatial sampling interval */
float *vt; /* velocity v(t) */
float **p,**q; /* input, output data */
complex **cp,**cq; /* complex input,output */
char *vfile=""; /* name of file containing velocities */
int verbose=0; /* flag for echoing info */
char *tmpdir; /* directory path for tmp files */
cwp_Bool istmpdir=cwp_false;/* true for user-given path */
/* hook up getpar to handle the parameters */
initargs(argc,argv);
requestdoc(1);
/* get info from first trace */
if (!gettr(&tr)) err("can't get first trace");
nt = tr.ns;
/* let user give dt and/or dx from command line */
if (!getparfloat("dt", &dt)) {
if (tr.dt) { /* is dt field set? */
dt = ((double) tr.dt)/1000000.0;
} else { /* dt not set, assume 4 ms */
dt = 0.004;
warn("tr.dt not set, assuming dt=0.004");
}
}
if (!getparfloat("dx",&dx)) {
if (tr.d2) { /* is d2 field set? */
dx = tr.d2;
} else {
dx = 1.0;
warn("tr.d2 not set, assuming d2=1.0");
}
}
/* get optional parameters */
if (!getparfloat("ft",&ft)) ft = 0.0;
if (!getparint("ntau",&ntau)) ntau = nt; CHECK_NT("ntau",ntau);
if (!getparfloat("dtau",&dtau)) dtau = dt;
if (!getparfloat("ftau",&ftau)) ftau = ft;
if (!getparfloat("Q",&Q)) Q = 1.0e6;
if (!getparfloat("ceil",&ceil)) ceil = 1.0e6;
if (verbose)warn("Q=%f ceil=%f",Q,ceil);
if (!getparint("verbose", &verbose)) verbose = 0;
/* Look for user-supplied tmpdir */
if (!getparstring("tmpdir",&tmpdir) &&
!(tmpdir = getenv("CWP_TMPDIR"))) tmpdir="";
if (!STREQ(tmpdir, "") && access(tmpdir, WRITE_OK))
err("you can't write in %s (or it doesn't exist)", tmpdir);
/* store traces and headers in tempfiles while getting a count */
if (STREQ(tmpdir,"")) {
tracefp = etmpfile();
headerfp = etmpfile();
if (verbose) warn("using tmpfile() call");
} else { /* user-supplied tmpdir */
char directory[BUFSIZ];
strcpy(directory, tmpdir);
strcpy(tracefile, temporary_filename(directory));
strcpy(headerfile, temporary_filename(directory));
/* Trap signals so can remove temp files */
signal(SIGINT, (void (*) (int)) closefiles);
signal(SIGQUIT, (void (*) (int)) closefiles);
signal(SIGHUP, (void (*) (int)) closefiles);
signal(SIGTERM, (void (*) (int)) closefiles);
tracefp = efopen(tracefile, "w+");
headerfp = efopen(headerfile, "w+");
istmpdir=cwp_true;
if (verbose) warn("putting temporary files in %s", directory);
}
nx = 0;
do {
++nx;
efwrite(&tr,HDRBYTES,1,headerfp);
efwrite(tr.data, FSIZE, nt, tracefp);
} while (gettr(&tr));
erewind(tracefp);
erewind(headerfp);
/* determine wavenumber sampling (for real to complex FFT) */
nxfft = npfar(nx);
nk = nxfft/2+1;
dk = 2.0*PI/(nxfft*dx);
fk = 0.0;
/* allocate space */
p = alloc2float(nt,nxfft);
q = alloc2float(ntau,nxfft);
cp = alloc2complex(nt,nk);
cq = alloc2complex(ntau,nk);
/* load traces into the zero-offset array and close tmpfile */
efread(*p, FSIZE, nt*nx, tracefp);
efclose(tracefp);
/* determine velocity function v(t) */
vt = ealloc1float(ntau);
if (!getparstring("vfile",&vfile)) {
ntmig = countparval("tmig");
if (ntmig==0) ntmig = 1;
tmig = ealloc1float(ntmig);
if (!getparfloat("tmig",tmig)) tmig[0] = 0.0;
nvmig = countparval("vmig");
if (nvmig==0) nvmig = 1;
if (nvmig!=ntmig) err("number of tmig and vmig must be equal");
vmig = ealloc1float(nvmig);
if (!getparfloat("vmig",vmig)) vmig[0] = 1500.0;
for (itmig=1; itmig<ntmig; ++itmig)
if (tmig[itmig]<=tmig[itmig-1])
err("tmig must increase monotonically");
for (it=0,t=0.0; it<ntau; ++it,t+=dt)
intlin(ntmig,tmig,vmig,vmig[0],vmig[ntmig-1],
1,&t,&vt[it]);
} else {
if (fread(vt,sizeof(float),nt,fopen(vfile,"r"))!=nt)
err("cannot read %d velocities from file %s",nt,vfile);
}
checkpars();
/* pad with zeros and Fourier transform x to k */
for (ix=nx; ix<nxfft; ix++)
for (it=0; it<nt; it++)
p[ix][it] = 0.0;
pfa2rc(-1,2,nt,nxfft,p[0],cp[0]);
/* migrate each wavenumber */
for (ik=0,k=fk; ik<nk; ik++,k+=dk)
gazdagvt(k,nt,dt,ft,ntau,dtau,ftau,vt,cp[ik],cq[ik], Q, ceil);
/* Fourier transform k to x (including FFT scaling) */
pfa2cr(1,2,ntau,nxfft,cq[0],q[0]);
for (ix=0; ix<nx; ix++)
for (itau=0; itau<ntau; itau++)
q[ix][itau] /= nxfft;
/* restore header fields and write output */
for (ix=0; ix<nx; ++ix) {
efread(&tr,HDRBYTES,1,headerfp);
tr.ns = ntau ;
tr.dt = dtau * 1000000.0 ;
tr.delrt = ftau * 1000.0 ;
memcpy( (void *) tr.data, (const void *) q[ix],ntau*FSIZE);
puttr(&tr);
}
/* Clean up */
efclose(headerfp);
if (istmpdir) eremove(headerfile);
if (istmpdir) eremove(tracefile);
return(CWP_Exit());
}
int
main(int argc, char **argv)
{
char plotcmd[BUFSIZ]; /* build psmovie command for popen */
float *trbuf; /* trace buffer */
FILE *plotfp; /* fp for plot data */
int nt; /* number of samples on trace */
int n2; /* number of traces per frame */
int n3; /* number of frames in data */
int ntr; /* number of traces */
int verbose; /* verbose flag */
float d1; /* time/depth sample rate */
float d2; /* trace/dx sample rate */
float f1; /* tmin/zmin */
float f2; /* tracemin/xmin */
cwp_Bool seismic; /* is this seismic data? */
cwp_Bool have_n2 = cwp_false;/* was n2 getparred? */
cwp_Bool have_n3 = cwp_false;/* was n3 getparred? */
cwp_Bool have_ntr = cwp_false;/* was ntr set in header? */
char *tmpdir; /* directory path for tmp files */
cwp_Bool istmpdir=cwp_false;/* true for user given path */
char *cwproot; /* value of CWPROOT environment variable*/
char *bindir; /* directory path for tmp files */
/* Initialize */
initargs(argc, argv);
requestdoc(1);
/* Get info from first trace */
if (!gettr(&tr)) err("can't get first trace");
seismic = ISSEISMIC(tr.trid);
nt = tr.ns;
ntr = tr.ntr;
if (ntr) have_ntr = cwp_true;
if (!getparint("verbose", &verbose)) verbose=0;
if (!getparfloat("d1", &d1)) {
if (tr.d1) d1 = tr.d1;
else if (tr.dt) d1 = ((double) tr.dt)/1000000.0;
else {
if (seismic) {
d1 = 0.004;
warn("tr.dt not set, assuming dt=0.004");
} else { /* non-seismic data */
d1 = 1.0;
warn("tr.d1 not set, assuming d1=1.0");
}
}
}
if (!getparfloat("d2", &d2)) d2 = (tr.d2) ? tr.d2 : 1.0;
if (!getparfloat("f1", &f1)) {
if (tr.f1) f1 = tr.f1;
else if (tr.delrt) f1 = (float) tr.delrt/1000.0;
else f1 = 0.0;
}
if (!getparfloat("f2", &f2)) {
if (tr.f2) f2 = tr.f2;
else if (tr.tracr) f2 = (float) tr.tracr;
else if (tr.tracl) f2 = (float) tr.tracl;
else if (seismic) f2 = 1.0;
else f2 = 0.0;
}
if (!getparfloat("f2", &f2)) f2 = 1.0;
/* Look for user-supplied tmpdir */
if (!getparstring("tmpdir",&tmpdir) &&
!(tmpdir = getenv("CWP_TMPDIR"))) tmpdir="";
if (!STREQ(tmpdir, "") && access(tmpdir, WRITE_OK))
err("you can't write in %s (or it doesn't exist)", tmpdir);
/* See if CWPBIN environment variable is not set */
if (!(bindir = getenv("CWPBIN"))) { /* construct bindir from CWPROOT */
bindir = (char *) emalloc(BUFSIZ);
/* Get value of CWPROOT environment variable */
if (!(cwproot = getenv("CWPROOT"))) cwproot ="" ;
if (STREQ(cwproot, "")) {
warn("CWPROOT environment variable is not set! ");
err("Set CWPROOT in shell environment as per instructions in CWP/SU Installation README files");
}
/* then bindir = $CWPROOT/bin */
sprintf(bindir, "%s/bin", cwproot);
}
strcat(bindir,"/"); /* put / at the end of bindir */
/* Allocate trace buffer */
trbuf = ealloc1float(nt);
/* Get or set n2 and n3 */
if (getparint("n2", &n2)) have_n2 = cwp_true;
if (getparint("n3", &n3)) have_n3 = cwp_true;
if (have_n2 && have_n3) have_ntr = cwp_true;
if (!have_ntr) { /* count traces */
if (verbose) {
warn("n2 or n3 not getparred, or ntr header field not set");
warn(" ... counting traces");
}
/* Create temporary "file" to hold data */
if (STREQ(tmpdir,"")) {
tracefp = etmpfile();
if (verbose) warn("using tmpfile() call");
} else { /* user-supplied tmpdir */
char directory[BUFSIZ];
strcpy(directory, tmpdir);
strcpy(tracefile, temporary_filename(directory));
/* Handle user interrupts */
signal(SIGINT, (void (*) (int)) closefiles);
signal(SIGTERM, (void (*) (int)) closefiles);
tracefp = efopen(tracefile, "w+");
istmpdir=cwp_true;
if (verbose)
warn("putting temporary files in %s", directory);
}
/* Loop over input frames & put them into the data file */
ntr = 0;
do {
++ntr;
efwrite(tr.data, FSIZE, nt, tracefp);
} while (gettr(&tr));
}
/* Set dimensions of movie */
if (!have_n2 && !have_n3) { n2 = ntr; n3=1; }
if (have_n2 && !have_n3) n3 = ntr/n2;
if (!have_n2 && have_n3) n2 = ntr/n3;
/* Set up psmovie command line */
sprintf(plotcmd,
"%spsmovie n1=%d n2=%d n3=%d d1=%f d2=%f f1=%f f2=%f", bindir,
nt, n2, n3, d1, d2, f1, f2);
fprintf(stderr, "%s\n", plotcmd);
for (--argc, ++argv; argc; --argc, ++argv) {
if (strncmp(*argv, "d1=", 3) && /* skip those already set */
strncmp(*argv, "d2=", 3) &&
strncmp(*argv, "f1=", 3) &&
strncmp(*argv, "f2=", 3)) {
strcat(plotcmd, " "); /* put a space between args */
strcat(plotcmd, "\""); /* user quotes are stripped */
strcat(plotcmd, *argv); /* add the arg */
strcat(plotcmd, "\""); /* user quotes are stripped */
}
}
/* Open pipe to psmovie and send the traces */
plotfp = epopen(plotcmd, "w");
if (!have_ntr){
/* send out stored traces one by one */
rewind(tracefp);
{ register int itr;
for (itr = 0; itr < ntr; ++itr) {
efread (trbuf, FSIZE, nt, tracefp);
efwrite(trbuf, FSIZE, nt, plotfp);
}
}
} else { /* just pump out traces and let psmovie do the work */
do {
efwrite(tr.data, FSIZE, nt, plotfp);
} while (gettr(&tr));
}
/* Clean up */
epclose(plotfp);
if (!have_ntr) {
efclose(tracefp);
if (istmpdir) eremove(tracefile);
}
return EXIT_SUCCESS;
}
int
main(int argc, char **argv)
{
char *tmpdir ; /* directory path for tmp files */
cwp_Bool istmpdir=cwp_false ; /* true for user given path */
float *hedr ; /* the headers */
float *data ; /* the data */
int nt ; /* number of trace samples */
float dt ; /* sample interval, sec */
float delrt ; /* delay recording time, sec */
cwp_String key[SU_NKEYS] ; /* array of keywords */
cwp_String type ; /* key string type */
int nkeys ; /* number of keywords */
int ikey,ntr = 0 ; /* counters */
int num ; /* number of traces to dump */
int numtr = 4 ; /* number of traces to dump */
int hpf ; /* header print format */
/* Initialize */
initargs(argc, argv) ;
requestdoc(1) ;
/* Look for user-supplied tmpdir */
if (!getparstring("tmpdir",&tmpdir) &&
!(tmpdir = getenv("CWP_TMPDIR"))) tmpdir="";
if (!STREQ(tmpdir, "") && access(tmpdir, WRITE_OK))
err("you can't write in %s (or it doesn't exist)", tmpdir);
/* Get values from first trace */
if (!gettr(&tr)) err("can't get first trace");
nt = (int) tr.ns ; /* Get nt */
dt = ((double) tr.dt)/1000000.0 ; /* microsecs to secs */
if (!dt) getparfloat("dt", &dt) ;
if (!dt) MUSTGETPARFLOAT("dt", &dt) ;
delrt = ((double) tr.delrt)/1000.0 ; /* millisecs to secs */
/* Get parameters */
if (getparint ("num", &num)) numtr = num ;
if ((nkeys=countparval("key"))!=0) getparstringarray("key",key) ;
hedr = ealloc1float(nkeys*numtr) ; /* make space for headers */
if (!getparint ("hpf", &hpf)) hpf = 0 ;
/* Store traces, headers in tempfiles */
if (STREQ(tmpdir,""))
{
tracefp = etmpfile();
headerfp = etmpfile();
do
{
++ntr;
efwrite(&tr, HDRBYTES, 1, headerfp);
efwrite(tr.data, FSIZE, nt, tracefp);
/* Get header values */
for (ikey=0; ikey<nkeys; ++ikey)
{
Value val;
float fval;
gethdval(&tr, key[ikey], &val) ;
type = hdtype(key[ikey]) ;
fval = vtof(type,val) ;
hedr[(ntr-1)*nkeys+ikey] = fval ;
}
}
while (ntr<numtr && gettr(&tr)) ;
}
else /* user-supplied tmpdir */
{
char directory[BUFSIZ];
strcpy(directory, tmpdir);
strcpy(tracefile, temporary_filename(directory));
strcpy(headerfile, temporary_filename(directory));
/* Handle user interrupts */
signal(SIGINT, (void (*) (int)) closefiles);
signal(SIGQUIT, (void (*) (int)) closefiles);
signal(SIGHUP, (void (*) (int)) closefiles);
signal(SIGTERM, (void (*) (int)) closefiles);
tracefp = efopen(tracefile, "w+");
headerfp = efopen(headerfile, "w+");
istmpdir=cwp_true;
do
{
++ntr;
efwrite(&tr, HDRBYTES, 1, headerfp);
efwrite(tr.data, FSIZE, nt, tracefp);
/* Get header values */
for (ikey=0; ikey<nkeys; ++ikey)
{
Value val;
float fval;
gethdval(&tr, key[ikey], &val) ;
type = hdtype(key[ikey]) ;
fval = vtof(type,val) ;
hedr[(ntr-1)*nkeys+ikey] = fval ;
}
}
while (ntr<numtr && gettr(&tr)) ;
}
/* Rewind after read, allocate space */
erewind(tracefp);
erewind(headerfp);
data = ealloc1float(nt*ntr);
/* Load traces into data and close tmpfile */
efread(data, FSIZE, nt*ntr, tracefp);
efclose(tracefp);
if (istmpdir) eremove(tracefile);
rewind(headerfp);
rewind(tracefp);
/* Do trace work */
dump(data, dt, hedr, key, delrt, nkeys, ntr, nt, hpf) ;
/* close */
efclose(headerfp);
if (istmpdir) eremove(headerfile);
free1(hedr) ;
free1(data) ;
return(CWP_Exit()) ;
}
int main(int argc, char *argv[]) {
#else
int gstat_main(int argc, char *argv[]) {
#endif
DATA **data = NULL, *valdata = NULL;
/*
* initialise some global variables:
*/
atexit(close_gstat_log_file);
init_userio(1);
init_global_variables();
argv0 = argv[0];
/*
* register command line arguments on command_line:
*/
command_line = store_argv(argc, argv);
parse_gstatrc();
/*
* INPUT: command line options;
*/
parse_options(argc, argv); /* exits on -e options */
/*
* start with program heading:
*/
printlog("%s: %s version %s\n", GSTAT_NAME, GSTAT_OS, VERSION);
printlog("%s\n", GSTAT_CR);
gstat_start();
/*
* INPUT: Parse command files:
*/
if (optind == argc) { /* there's no command file name left */
if (get_method() != UIF) { /* -i or -m command line option */
/* no arguments */
printlog("Updates, manuals and source code: %s\n",
GSTAT_HOME);
printlog("%s\n", USAGE);
ErrMsg(ER_NOCMD, "");
} else {
start_ui();
exit(0);
}
} else { /* we have a command file to be read */
for ( ; optind < argc; optind++) {
command_file_name = argv[optind];
parse_file(command_file_name);
if (logfile_name != NULL)
set_gstat_log_file(efopen(logfile_name, "w"));
/*
* get global variables locally:
*/
data = get_gstat_data();
valdata = get_dataval();
set_seed(gl_seed);
/*
* check variable settings and next
* INPUT: read data values from file:
*/
read_all_data(data, valdata, get_n_vars());
if (get_method() == NSP) /* Still no answer to this: choose default */
set_method(get_default_method());
set_mode();
check_global_variables();
setup_meschach_error_handler();
if (DEBUG_DUMP)
dump_all();
if (get_method() != NSP)
printlog("[%s]\n", method_string(get_method()));
if (check_only)
set_method(NSP);
/*
* start calculations && OUTPUT routines:
*/
switch (get_method()) {
case UIF:
start_ui();
break;
case NSP:
break;
case COV:
case SEM:
do_variogram(get_n_vars(), get_method());
break;
case POLY:
setup_poly_method();
/*FALLTHROUGH*/
default:
if (gl_xvalid) /* validation/cross validation */
cross_valid(data);
else
predict_all(data); /* or prediction: */
break;
} /* switch get_method() */
remove_all(); /* free all data etc. */
init_global_variables(); /* re-init for next round */
}
}
if (DEBUG_DUMP)
atexit(print_file_record);
if (get_method() != UIF)
elapsed();
/*
* file closing & data freeing time:
*/
if (plotfile != NULL)
efclose(plotfile);
exit(0);
} /* end of main() */
int main (int argc, char **argv)
{
int nt; /* number of time samples */
int nz; /* number of migrated depth samples */
int nx,nxshot; /* number of midpoints,shotgathers, the folds in a shot
gather */
int flag=1; /*flag to use ft or meter as the unit*/
int dip=65; /*maximum dip angle to migrate*/
int iz,iw,ix,it,oldsx; /* loop counters*/
int ntfft; /* fft size*/
int nw; /* number of wave numbers */
int mytid,tids[NNTASKS],msgtype,rc,i;/*variable for PVM function*/
int nw1,task;
int lpad=9999,rpad=9999; /*zero-traces padded on left and right sides*/
float f1,f2,f3,f4; /*frequencies to build the Hamming window*/
int nf1,nf2,nf3,nf4; /*the index for above frequencies*/
int NTASKS=0; /*number of slave tasks to start*/
char cpu_name[NNTASKS][80]; /*strings to store the computers' name*/
int flag_cpu=0; /*flag to control if using NTASKS variable*/
float sx,gxmin,gxmax; /*location of geophone and receivers*/
int isx,nxo,ifx=0; /*index for geophone and receivers*/
int ix1,ix2,ix3,il,ir; /*dummy index*/
float *wl,*wtmp; /*pointers for the souce function*/
float Fmax=25; /*peak frequency to make the Ricker wavelet*/
int ntw,truenw; /*number of frequencies to be migrated*/
float dt=0.004,dz; /*time, depth sampling interval*/
float ft; /*first time sample*/
float dw; /*frequency sampling interval*/
float fw; /*first frequency*/
float dx; /*spatial sampling interval*/
float **p,**cresult,**result_tmp; /* input, output data*/
float **v; /*double pointer direct to velocity structure*/
complex *wlsp,**cp,**cq,**cq1; /*pointers for internal usage*/
char *vfile=""; /* name of file containing velocities */
char *cpufile=""; /* name of file containing CPU name */
FILE *vfp,*cpu_fp;
/* hook up getpar to handle the parameters */
initargs(argc,argv);
requestdoc(1);
/* get optional parameters */
if (!getparfloat("ft",&ft)) ft = 0.0;
if (!getparint("nz",&nz)) err("nz must be specified");
if (!getparfloat("dz",&dz)) err("dz must be specified");
if (!getparstring("vfile", &vfile)) err("vfile must be specified");
if (!getparint("nxo",&nxo)) err("nxo must be specified");
if (!getparint("nxshot",&nxshot)) err("nshot must be specified");
if (!getparfloat("Fmax",&Fmax)) err("Fmax must be specified");
if (!getparfloat("f1",&f1)) f1 = 10.0;
if (!getparfloat("f2",&f2)) f2 = 20.0;
if (!getparfloat("f3",&f3)) f3 = 40.0;
if (!getparfloat("f4",&f4)) f4 = 50.0;
if (!getparint("lpad",&lpad)) lpad=9999;
if (!getparint("rpad",&rpad)) rpad=9999;
if (!getparint("flag",&flag)) flag=1;
if (!getparint("dip",&dip)) dip=65;
if (getparstring("cpufile", &cpufile)){
cpu_fp=fopen(cpufile,"r");
NTASKS=0;
while(!feof(cpu_fp)){
fscanf(cpu_fp,"%s",cpu_name[NTASKS]);
NTASKS++;
}
NTASKS-=1;
flag_cpu=1;
}
else /*if cpufile not specified, the use NTASKS*/
if (!getparint("NTASKS",&NTASKS)) err("No CPUfile specified, NTASKS must be specified");
/*allocate space for the velocity profile*/
tshot=nxshot;
v=alloc2float(nxo,nz);
/*load velicoty file*/
vfp=efopen(vfile,"r");
efread(v[0],FSIZE,nz*nxo,vfp);
efclose(vfp);
/*PVM communication starts here*/
mytid=pvm_mytid(); /*get my pid*/
task=NTASKS;
warn("\n %d",task);
rc=0;
/*spawn slave processes here*/
if(!flag_cpu){
rc=pvm_spawn(child,NULL,PvmTaskDefault,"",task,tids);
}
else{
for(i=0;i<NTASKS;i++){
rc+=pvm_spawn(child,NULL,PvmTaskHost,cpu_name[i],1,&tids[i]);
}
}
/*show the pid of slaves if*/
for(i=0;i<NTASKS;i++){
if(tids[i]<0)warn("\n %d",tids[i]);
else warn("\nt%x\t",tids[i]);
}
/*if not all the slaves start, then quit*/
if(rc<NTASKS){ warn("error");pvm_exit();exit(1);}
/*broadcast the global parameters nxo,nz,dip to all slaves*/
pvm_initsend(PvmDataDefault);
rc=pvm_pkint(&nxo,1,1);
rc=pvm_pkint(&nz,1,1);
rc=pvm_pkint(&dip,1,1);
msgtype=PARA_MSGTYPE;
task=NTASKS;
rc=pvm_mcast(tids,task,msgtype);
/*broadcast the velocity profile to all slaves*/
pvm_initsend(PvmDataDefault);
rc=pvm_pkfloat(v[0],nxo*nz,1);
msgtype=VEL_MSGTYPE;
rc=pvm_mcast(tids,task,msgtype);
/*free the space for velocity profile*/
free2float(v);
/*loop over shot gathers begin here*/
loop:
/* get info from first trace */
if (!gettr(&tr)) err("can't get first trace");
nt = tr.ns;
/* let user give dt and/or dx from command line */
if (!getparfloat("dt", &dt)) {
if (tr.dt) { /* is dt field set? */
dt = ((double) tr.dt)/1000000.0;
} else { /* dt not set, assume 4 ms */
dt = 0.004;
warn("tr.dt not set, assuming dt=0.004");
}
}
if (!getparfloat("dx",&dx)) {
if (tr.d2) { /* is d2 field set? */
dx = tr.d2;
} else {
dx = 1.0;
warn("tr.d2 not set, assuming d2=1.0");
}
}
sx=tr.sx;
isx=sx/dx;
gxmin=gxmax=tr.gx;
oldsx=sx;
/* determine frequency sampling interval*/
ntfft = npfar(nt);
nw = ntfft/2+1;
dw = 2.0*PI/(ntfft*dt);
/*compute the index of the frequency to be migrated*/
fw=2.0*PI*f1;
nf1=fw/dw+0.5;
fw=2.0*PI*f2;
nf2=fw/dw+0.5;
fw=2.0*PI*f3;
nf3=fw/dw+0.5;
fw=2.0*PI*f4;
nf4=fw/dw+0.5;
/*the number of frequency to migrated*/
truenw=nf4-nf1+1;
fw=0.0+nf1*dw;
warn("nf1=%d nf2=%d nf3=%d nf4=%d nw=%d",nf1,nf2,nf3,nf4,truenw);
fw=0.0;
/* allocate space */
wl=alloc1float(ntfft);
wlsp=alloc1complex(nw);
/*generate the Ricker wavelet*/
wtmp=ricker(Fmax,dt,&ntw);
for(it=0;it<ntfft;it++)
wl[it]=0.0;
for(it=0;it<ntw-12;it++)
wl[it]=wtmp[it+12];
free1float( wtmp);
/*Fourier transform the Ricker wavelet to frequency domain*/
pfarc(-1,ntfft,wl,wlsp);
/* allocate space */
p = alloc2float(ntfft,nxo);
cp = alloc2complex(nw,nxo);
for (ix=0; ix<nxo; ix++)
for (it=0; it<ntfft; it++)
p[ix][it] = 0.0;
/*read in a single shot gather*/
ix=tr.gx/dx;
memcpy( (void *) p[ix], (const void *) tr.data,nt*FSIZE);
nx = 0;
while(gettr(&tr)){
int igx;
if(tr.sx!=oldsx){ fseek(stdin,(long)(-240-nt*4),SEEK_CUR); break;}
igx=tr.gx/dx;
memcpy( (void *) p[igx], (const void *) tr.data,nt*FSIZE);
if(gxmin>tr.gx)gxmin=tr.gx;
if(gxmax<tr.gx)gxmax=tr.gx;
nx++;
oldsx=tr.sx;
}
warn("\nnx= %d",nx);
warn("sx %f , gxmin %f gxmax %f",sx,gxmin,gxmax);
/*transform the shot gather from time to frequency domain*/
pfa2rc(1,1,ntfft,nxo,p[0],cp[0]);
/*compute the most left and right index for the migrated section*/
ix1=sx/dx;
ix2=gxmin/dx;
ix3=gxmax/dx;
if(ix1>=ix3)ix3=ix1;
if(ix1<=ix2)ix2=ix1;
il=ix2;
ir=ix3;
ix2-=lpad;
ix3+=rpad;
if(ix2<0)ix2=0;
if(ix3>nxo-1)ix3=nxo-1;
/*the total traces to be migrated*/
nx=ix3-ix2+1;
/*allocate space*/
cq = alloc2complex(nx,nw);
cq1 = alloc2complex(nx,nw);
/*transpose the frequency domain data from data[ix][iw] to data[iw][ix] and
apply a Hamming at the same time*/
for (ix=0; ix<nx; ix++)
for (iw=0; iw<nw; iw++){
float tmpp=0.0,tmppp=0.0;
if(iw<nf1||iw>nf4)
cq[iw][ix]=cmplx(0.0,0.0);
else{
if(iw>=nf1&&iw<=nf2){tmpp=PI/(nf2-nf1);tmppp=tmpp*(iw-nf1)-PI;tmpp=0.54+0.46*cos(tmppp);
cq[iw][ix]=crmul(cp[ix+ix2][iw],tmpp);}
else{
if(iw>=nf3&&iw<=nf4){tmpp=PI/(nf4-nf3);tmppp=tmpp*(iw-nf3);tmpp=0.54+0.46*cos(tmppp);
cq[iw][ix]=crmul(cp[ix+ix2][iw],tmpp);}
else
{cq[iw][ix]=cp[ix+ix2][iw];}
}
}
cq[iw][ix]=cp[ix+ix2][iw];
cq1[iw][ix]=cmplx(0.0,0.0);
}
ix=sx/dx-ifx;
warn("ix %d",ix);
for(iw=0;iw<nw;iw++){
cq1[iw][ix-ix2]=wlsp[iw];
}
free2float(p);
free2complex(cp);
free1float(wl);
free1complex(wlsp);
/*if the horizontal spacing interval is in feet, convert it to meter*/
if(!flag)
dx*=0.3048;
/*start of the timing function*/
time(&t1);
/* send local parameters to all slaves*/
pvm_initsend(PvmDataDefault);
ix=15;
rc=pvm_pkint(&ix,1,1);
rc=pvm_pkint(&ntfft,1,1);
rc=pvm_pkint(&ix2,1,1);
rc=pvm_pkint(&ix3,1,1);
rc=pvm_pkint(&isx,1,1);
rc=pvm_pkint(&il,1,1);
rc=pvm_pkint(&ir,1,1);
rc=pvm_pkfloat(&dx,1,1);
rc=pvm_pkfloat(&dz,1,1);
rc=pvm_pkfloat(&dw,1,1);
rc=pvm_pkfloat(&dt,1,1);
msgtype=PARA_MSGTYPE;
task=NTASKS;
rc=pvm_mcast(tids,task,msgtype);
/* send all the frequency to slaves*/
count=NTASKS*5; /*count is the number of frequency components in a shot
gather*/
nw=truenw;
nw1=nw/(count);
if(nw1==0)nw1=1;
total=count=ceil(nw*1.0/nw1);
/* if it is the first shot gather, send equal data to all the slaves, then for
the following shot gathers, only send data when slave requests*/
if(nxshot==tshot){
for(i=0;i<NTASKS;i++){
float *tmpp;
float fw1;
int nww,byte,nwww;
pvm_initsend(PvmDataDefault);
nww=nf1+i*nw1;fw1=fw+nww*dw;
nwww=nw1;
byte=UnDone;
rc=pvm_pkint(&byte,1,1);
rc=pvm_pkfloat(&fw1,1,1);
rc=pvm_pkint(&nwww,1,1);
rc=pvm_pkfloat((float *)cq[nww],nx*nwww*2,1);
rc=pvm_pkfloat((float *)cq1[nww],nx*nwww*2,1);
msgtype=DATA_MSGTYPE;
pvm_send(tids[i],msgtype);
}
count-=NTASKS;
}
while(count){
int tid0,bufid;
float *tmpp;
float fw1;
int nww,byte,nwww;
int i;
i=total-count;
msgtype=COM_MSGTYPE;
bufid=pvm_recv(-1,msgtype);
rc=pvm_upkint(&tid0,1,1);
pvm_freebuf(bufid);
pvm_initsend(PvmDataDefault);
nww=nf1+i*nw1;fw1=fw+nww*dw;
if(i==total-1)nwww=nw-nw1*i;
else nwww=nw1;
byte=UnDone;
rc=pvm_pkint(&byte,1,1);
rc=pvm_pkfloat(&fw1,1,1);
rc=pvm_pkint(&nwww,1,1);
rc=pvm_pkfloat((float *)cq[nww],nx*nwww*2,1);
rc=pvm_pkfloat((float *)cq1[nww],nx*nwww*2,1);
msgtype=DATA_MSGTYPE;
pvm_send(tid0,msgtype);
count--;
}
ix=Done;
pvm_initsend(PvmDataDefault);
rc=pvm_pkint(&ix,1,1);
msgtype=DATA_MSGTYPE;
pvm_mcast(tids,task,msgtype);
free2complex(cq);
free2complex(cq1);
time(&t2);
warn("\n %d shot been finished in %f seconds, Ntask=%d",nxshot,difftime(t2,t1),NTASKS);
nxshot--;
if(nxshot)goto loop;
/*when all the shot gathers done, send signal to all slaves to request the
partial imaging*/
ix=FinalDone;
pvm_initsend(PvmDataDefault);
rc=pvm_pkint(&ix,1,1);
msgtype=PARA_MSGTYPE;
pvm_mcast(tids,task,msgtype);
/*allocate space for the final image*/
cresult = alloc2float(nz,nxo);
for(ix=0;ix<nxo;ix++)
for(iz=0;iz<nz;iz++)
{ cresult[ix][iz]=0.0;
}
result_tmp= alloc2float(nz,nxo);
/*receive partial image from all the slaves*/
msgtype=RESULT_MSGTYPE;
i=0;
while(i<NTASKS){
int bufid;
bufid=pvm_recv(-1,msgtype);
rc=pvm_upkfloat(result_tmp[0],nxo*nz,1);
pvm_freebuf(bufid);
for(ix=0;ix<nxo;ix++)
for(iz=0;iz<nz;iz++)
{
cresult[ix][iz]+=result_tmp[ix][iz];
}
i=i+1;
warn("\n i=%d been received",i);
}
/*send signal to all slaves to kill themselves*/
pvm_initsend(PvmDataDefault);
pvm_mcast(tids,task,COM_MSGTYPE);
/*output the final image*/
for(ix=0; ix<nxo; ix++){
tr.ns = nz ;
tr.dt = dz*1000000.0 ;
tr.d2 = dx;
tr.offset = 0;
tr.cdp = tr.tracl = ix;
memcpy( (void *) tr.data, (const void *) cresult[ix],nz*FSIZE);
puttr(&tr);
}
pvm_exit();
return EXIT_SUCCESS;
}
int
main(int argc,char **argv)
{
int n1, n2, n3, depth, time, verbose, iter, slowness;
float r1, r2, r3, d1, d2, d3, *wl, ***vel, mu, vminc, vmaxc;
FILE *invp=stdin, *outvp=stdout;
/* initialization */
initargs(argc,argv) ;
requestdoc(0);
/*-----------get required parameters-----------*/
if( !getparint("n1",&n1) ) n1 = 0 ;
if( n1 <= 0 ) err("sample number of 1st dimension invalid" ) ;
if( !getparint("n2",&n2) ) n2 = 0 ;
if( n2 <= 0 ) err("sample number of 2nd dimension invalid" ) ;
if( !getparint("n3",&n3) ) n3 = 0 ;
if( n3 <= 0 ) err("sample number of 3rd dimension invalid" ) ;
/*-----------get optional parameters-----------*/
/* sample intervals */
if( !getparfloat("d1",&d1) ) d1 = 1.0 ;
if( !getparfloat("d2",&d2) ) d2 = 1.0 ;
if( !getparfloat("d3",&d3) ) d3 = 1.0 ;
/* smoothing parameters */
if( !getparfloat("r1",&r1) || n1<4) r1 = 0. ;
if( !getparfloat("r2",&r2) || n2<4) r2 = 0. ;
if( !getparfloat("r3",&r3) || n3<4) r3 = 0. ;
/* scale smoothing parameters */
r1 = (d1>0)?r1/d1:0;
r2 = (d2>0)?r2/d2:0;
r3 = (d3>0)?r3/d3:0;
r1 = 0.5*r1*r1 ;
r2 = 0.5*r2*r2 ;
r3 = 0.5*r3*r3 ;
/* get iteration number for smoothing operator */
if(!getparint("iter", &iter)) iter = 2;
if(iter<=0 || iter>3) err("\t iter must be between 1 and 3!\n");
/* description for vertical dimension */
if(!getparint("time",&time )) time = 0;
if(!getparint("depth",&depth) ) depth = 1;
if(time) depth = time;
/* relative weight at bottom */
if(!getparfloat("mu",&mu) ) mu = 1.0;
if(mu<1) err("mu must not be less than 1 \n");
/* smoothing on velocity or slowness */
if(!getparint("slowness",&slowness) ) slowness = 0;
/* clips of velocity before smoothing */
if(!getparfloat("vminc",&vminc) ) vminc = 0;
if(!getparfloat("vmaxc",&vmaxc) ) vmaxc = 99999;
/* allocate input file */
vel = alloc3float(n1,n2,n3) ;
wl = alloc1float(4);
/* read input velocity file */
efread((char *)vel[0][0],sizeof(float),n1*n2*n3,invp);
/* perform smoothing operation */
vsm3d(vel,n3,n2,n1,iter,depth,r3,r2,r1,mu,slowness,vminc,vmaxc);
/* write output velocity file */
efwrite((char *)vel[0][0],sizeof(float),n1*n2*n3,outvp);
if(!getparint("verbose",&verbose)) verbose = 0;
if(verbose) {
wavel(n1,n2,n3,d1,d2,d3,time,wl,vel);
fprintf(stderr,"minimum wavelengths of smoothed velocity:\n");
fprintf(stderr,"\tlambda1 = %g,\n", wl[1]);
fprintf(stderr,"\tlambda2 = %g,\n", wl[2]);
fprintf(stderr,"\tlambda3 = %g,\n", wl[3]);
fprintf(stderr,"\tlambda = %g,\n", wl[0]);
}
checkpars();
/* close input and output files */
efclose(invp) ;
efclose(outvp) ;
return(CWP_Exit());
}
int
main(int argc, char **argv)
{
int nt; /* number of time samples per trace */
float dt; /* time sampling interval */
float ft; /* time of first sample */
int it; /* time sample index */
int cdpmin; /* minimum cdp to process */
int cdpmax; /* maximum cdp to process */
float dxcdp; /* cdp sampling interval */
int noffmix; /* number of offsets to mix */
float offmax; /* maximum offset */
float tmute; /* mute time at far offset */
float vrms; /* rms velocity at mute time */
int nsmax; /* maximum number of time shifts per trace in DMO */
int ns; /* actual number of time shifts per trace in DMO */
float *p; /* input trace */
float **q; /* output DMO-corrected traces */
float *temp; /* temporary array */
float *ts; /* table of time shifts for DMO */
float *as; /* table of amplitudes for DMO */
float offset=0.0;/* source-receiver offset of current trace */
float oldoffset;/* offset of previous trace */
int cdp=0; /* cdp number of current trace */
int ncdp; /* number of cdps */
int icdp; /* cdp index */
int jcdp; /* cdp index */
int jcdplo; /* lower bound for jcdp */
int jcdphi; /* upper bound for jcdp */
int ntrace; /* number of traces processed in current mix */
int itrace; /* trace index */
int noff; /* number of offsets processed in current mix */
int gottrace; /* non-zero if an input trace was read */
int done; /* non-zero if done */
float *ds; /* shaping filter to complete DMO processing */
int lds=125; /* length of shaping filter */
int ifds=-100; /* time index of first sample in shaping filter */
int verbose; /* =1 for diagnostic print */
char *tmpdir; /* directory path for tmp files */
cwp_Bool istmpdir=cwp_false;/* true for user given path */
/* hook up getpar */
initargs(argc, argv);
requestdoc(1);
/* get information from the first header */
if (!gettr(&tr)) err("can't get first trace");
nt = tr.ns;
dt = ((double) tr.dt)/1000000.0;
ft = tr.delrt/1000.0;
/* get parameters */
if (!getparint("cdpmin",&cdpmin)) err("must specify cdpmin");
if (!getparint("cdpmax",&cdpmax)) err("must specify cdpmax");
if (cdpmin>cdpmax) err("cdpmin must be less than cdpmax");
if (!getparfloat("dxcdp",&dxcdp)) err("must specify dxcdp");
if (!getparint("noffmix",&noffmix)) err("must specify noffmix");
if (!getparfloat("offmax",&offmax)) offmax=3000.0;
if (!getparfloat("tmute",&tmute)) tmute=2.0;
if (!getparfloat("vrms",&vrms)) vrms=1500.0;
if (!getparint("nsmax",&nsmax)) nsmax=400;
if (!getparint("verbose",&verbose)) verbose=0;
/* Look for user-supplied tmpdir */
if (!getparstring("tmpdir",&tmpdir) &&
!(tmpdir = getenv("CWP_TMPDIR"))) tmpdir="";
if (!STREQ(tmpdir, "") && access(tmpdir, WRITE_OK))
err("you can't write in %s (or it doesn't exist)", tmpdir);
checkpars();
/* determine number of cdps */
ncdp = cdpmax-cdpmin+1;
/* allocate workspace */
q = ealloc2float(nt,ncdp);
p = ealloc1float(nt);
temp = ealloc1float(nt);
ts = ealloc1float(nsmax);
as = ealloc1float(nsmax);
ds = ealloc1float(lds);
/* tabulate time shifts and amplitudes for dmo */
maketa(dxcdp,dt,offmax,tmute,vrms,nsmax,&ns,ts,as);
if (verbose)
fprintf(stderr,"\tDMO will be performed via %d time shifts\n",
ns);
/* compute shaping filter for dmo horizontal reflection response */
makeds(ns,ts,as,lds,ifds,ds);
/* open temporary file for headers */
if (STREQ(tmpdir,"")) {
headerfp = etmpfile();
if (verbose) warn("using tmpfile() call");
} else { /* user-supplied tmpdir */
char directory[BUFSIZ];
strcpy(directory, tmpdir);
strcpy(headerfile, temporary_filename(directory));
/* Trap signals so can remove temp files */
signal(SIGINT, (void (*) (int)) closefiles);
signal(SIGQUIT, (void (*) (int)) closefiles);
signal(SIGHUP, (void (*) (int)) closefiles);
signal(SIGTERM, (void (*) (int)) closefiles);
headerfp = efopen(headerfile, "w+");
istmpdir=cwp_true;
if (verbose)
warn("putting temporary header file in %s", directory);
}
/* initialize */
oldoffset = tr.offset;
gottrace = 1;
done = 0;
ntrace = 0;
noff = 0;
for (icdp=0; icdp<ncdp; ++icdp)
for (it=0; it<nt; ++it)
q[icdp][it] = 0.0;
/* loop over traces */
do {
/* if got a trace */
if (gottrace) {
/* determine offset and cdp */
offset = tr.offset;
cdp = tr.cdp;
/* update number of offsets mixed */
if (offset!=oldoffset) noff++;
/* get trace samples */
memcpy( (void *) p,
(const void *) tr.data, nt*sizeof(float));
}
/* if a mix of offsets is complete */
if (noff==noffmix || !gottrace) {
/* update number of offsets mixed */
if (!gottrace) noff++;
/* apply shaping filter to complete dmo processing */
for (icdp=0; icdp<ncdp; ++icdp) {
convolve_cwp(lds,ifds,ds,nt,0,q[icdp],nt,0,temp);
memcpy( (void *) q[icdp],
(const void *) temp, nt*sizeof(float));
}
/* rewind trace header file */
erewind(headerfp);
/* loop over all output traces */
for (itrace=0; itrace<ntrace; ++itrace) {
/* read trace header and determine cdp index */
efread(&tro,HDRBYTES,1,headerfp);
icdp = tro.cdp-cdpmin;
/* get dmo-corrected data */
memcpy((void *) tro.data,
(const void *) q[icdp],nt*sizeof(float));
/* write output trace */
puttr(&tro);
}
/* report */
if (verbose)
fprintf(stderr,"\tCompleted mix of "
"%d offsets with %d traces\n",
noff,ntrace);
/* if no more traces, break */
if (!gottrace) break;
/* rewind trace header file */
erewind(headerfp);
/* reset number of offsets and traces */
noff = 0;
ntrace = 0;
/* zero dmo accumulators */
for (icdp=0; icdp<ncdp; ++icdp)
for (it=0; it<nt; ++it)
q[icdp][it] = 0.0;
}
/* if cdp is within range of cdps to process */
if (cdp>=cdpmin && cdp<=cdpmax) {
/* save trace header and update number of traces */
efwrite(&tr,HDRBYTES,1,headerfp);
ntrace++;
/* determine output traces potentially modified
by input */
icdp = cdp-cdpmin;
jcdplo = MAX(0,icdp-0.5*ABS(offset/dxcdp));
jcdphi = MIN(ncdp-1,icdp+0.5*ABS(offset/dxcdp));
/* loop over potentially modified output traces */
for (jcdp=jcdplo; jcdp<=jcdphi; ++jcdp) {
/* do dmo for one output trace */
dmotx(ns,ts,as,offset,(jcdp-icdp)*dxcdp,dxcdp,
0,nt,dt,ft,p,q[jcdp]);
}
/* remember offset */
oldoffset = offset;
}
/* get next trace (if there is one) */
if (!gettr(&tr)) gottrace = 0;
} while (!done);
/* clean up */
efclose(headerfp);
if (istmpdir) eremove(headerfile);
return(CWP_Exit());
}
int main(int argc, char **argv)
{
usghed usghin, usghtop, usghbot, usghlayer;
usghed usghvtop, usghvbot, usghglayer;
FILE *infp,*outfp,*topfp,*botfp,*layerfp;
FILE *vtopfp,*vbotfp,*glayerfp;
char *infile,*outfile,*layertop, *layerbot;
char *gtopgrid, *gbotgrid;
char *layers, *glayers;
int ibot, itop;
int ierr;
int nz, iz;
float *dzrl, sm2top, sm2bot, sm3top, sm3bot;
float gabovetop, gbelowbot;
int igabovetop, igbelowbot;
float g0, r0;
int ginterp=0;
int n1,n2,n3;
int i1,i2,i3;
float d1,o1,d2,d3;
float *grid, *ztop, *zbot, gmin, gmax;
float *vtop, *vbot;
float top, bot;
float tmp;
int i1top, i1bot, itmp;
int ivtop, ivbot;
float *sm2s, *sm3s;
float *work, *fsmx, *fsmy, *vs, *zs;
float z, scale, zscale, vscale;
int ismx, ismy;
int nlayer, nglayer;
/* hook up getpar */
initargs(argc,argv);
askdoc(0);
/* get parameters */
if(getparstring("infile",&infile)) {
infp = efopen(infile,"r");
} else {
infp = stdin;
}
ierr = fgetusghdr(infp,&usghin);
if(ierr!=0) err(" input grid header error ");
if(getparstring("outfile",&outfile)) {
outfp = efopen(outfile,"w");
} else {
outfp = stdout;
}
file2g(infp);
file2g(outfp);
nlayer = 0;
nglayer = 0;
nlayer = countparname("layers");
if(nlayer==1) err(" at least 2 layers are needed \n");
nglayer = countparname("glayers");
if(nlayer==0) {
if (getparstring("layertop",&layertop)) {
topfp = efopen(layertop,"r");
ierr = fgetusghdr(topfp,&usghtop);
if(ierr!=0) err(" layertop grid header error ");
} else {
err(" layertop missing ");
}
if (getparstring("layerbot",&layerbot)) {
botfp = efopen(layerbot,"r");
ierr = fgetusghdr(botfp,&usghbot);
if(ierr!=0) err(" layerbot grid header error ");
} else {
err(" layerbot missing ");
}
} else {
if(nlayer!=nglayer && nglayer>0 )
err(" %d layers not matching %d glayers \n",nlayer,nglayer);
}
ivtop = 0;
if (getparstring("gtopgrid",>opgrid)) {
vtopfp = efopen(gtopgrid,"r");
ierr = fgetusghdr(vtopfp,&usghvtop);
if(ierr!=0) err(" gtopgrid header error ");
ivtop = 1;
}
ivbot = 0;
if(getparstring("gbotgrid",&gbotgrid) ) {
vbotfp = efopen(gbotgrid,"r");
ierr = fgetusghdr(vbotfp,&usghvbot);
if(ierr!=0) err(" gbotgrid header error ");
ivbot = 1;
}
if(!getparint("ginterp",&ginterp)) ginterp=0;
if(ivtop==0 || ivbot==0) {
if ( getparfloat("g0",&g0) && getparfloat("r0",&r0) ) {
ivtop = -1; ivbot = -1;
}
}
if( !getparint("nz",&nz) ) nz=10;
if(nlayer!=0) nz = nlayer - 1;
dzrl = emalloc(nz*sizeof(float));
sm2s = emalloc((nz+1)*sizeof(float));
sm3s = emalloc((nz+1)*sizeof(float));
if( countparval("dzrl")>0 && nz!=countparval("dzrl") ) {
err( " number of dzrl elements must match nz=%d \n",nz);
} else if( countparval("dzrl")==0 ) {
for(iz=0;iz<nz;iz++) dzrl[iz] = 1.;
} else if( countparval("dzrl")==nz) {
getparfloat("dzrl",dzrl);
}
if( !getparfloat("sm2top",&sm2top) ) sm2top=0.;
if( !getparfloat("sm3top",&sm3top) ) sm3top=0.;
if( !getparfloat("sm2bot",&sm2bot) ) sm2bot=0.;
if( !getparfloat("sm3bot",&sm3bot) ) sm3bot=0.;
igabovetop = 1;
if( !getparfloat("gabovetop",&gabovetop) ) igabovetop=0;
igbelowbot = 1;
if( !getparfloat("gbelowbot",&gbelowbot) ) igbelowbot=0;
n1 = usghin.n1;
n2 = usghin.n2;
n3 = usghin.n3;
o1 = usghin.o1;
d1 = usghin.d1;
d2 = usghin.d2;
d3 = usghin.d3;
gmin = usghin.gmin;
gmax = usghin.gmax;
/* memory allocations */
ztop = (float*) emalloc(n2*n3*sizeof(float));
zbot = (float*) emalloc(n2*n3*sizeof(float));
vtop = (float*) emalloc(n2*n3*sizeof(float));
vbot = (float*) emalloc(n2*n3*sizeof(float));
zs = (float*) emalloc(n2*n3*(nz+1)*sizeof(float));
vs = (float*) emalloc(n2*n3*(nz+1)*sizeof(float));
work = (float*) emalloc(n2*n3*sizeof(float));
grid = (float*) emalloc(n1*sizeof(float));
if(nlayer==0) {
if(usghin.n2!=usghtop.n1) err("check layertop header n1");
if(usghin.n3!=usghtop.n2) err("check layertop header n2");
if(usghin.o2!=usghtop.o1) err("check layertop header o1");
if(usghin.o3!=usghtop.o2) err("check layertop header o2");
if(usghin.d2!=usghtop.d1) err("check layertop header d1");
if(usghin.d3!=usghtop.d2) err("check layertop header d2");
efseek(topfp,0,0);
efread(ztop,sizeof(float),n2*n3,topfp);
if(usghin.n2!=usghbot.n1) err("check layerbot header n1");
if(usghin.n3!=usghbot.n2) err("check layerbot header n2");
if(usghin.o2!=usghbot.o1) err("check layerbot header o1");
if(usghin.o3!=usghbot.o2) err("check layerbot header o2");
if(usghin.d2!=usghbot.d1) err("check layerbot header d1");
if(usghin.d3!=usghbot.d2) err("check layerbot header d2");
efseek(botfp,0,0);
efread(zbot,sizeof(float),n2*n3,botfp);
if(ivtop==1) {
if(usghin.n2!=usghvtop.n1) err("check gtopgrid header n1");
if(usghin.n3!=usghvtop.n2) err("check gtopgrid header n2");
if(usghin.o2!=usghvtop.o1) err("check gtopgrid header o1");
if(usghin.o3!=usghvtop.o2) err("check gtopgrid header o2");
if(usghin.d2!=usghvtop.d1) err("check gtopgrid header d1");
if(usghin.d3!=usghvtop.d2) err("check gtopgrid header d2");
efseek(vtopfp,0,0);
efread(vtop,sizeof(float),n2*n3,vtopfp);
}
if(ivbot==1) {
if(usghin.n2!=usghvbot.n1) err("check gbotgrid header n1");
if(usghin.n3!=usghvbot.n2) err("check gbotgrid header n2");
if(usghin.o2!=usghvbot.o1) err("check gbotgrid header o1");
if(usghin.o3!=usghvbot.o2) err("check gbotgrid header o2");
if(usghin.d2!=usghvbot.d1) err("check gbotgrid header d1");
if(usghin.d3!=usghvbot.d2) err("check gbotgrid header d2");
efseek(vbotfp,0,0);
efread(vbot,sizeof(float),n2*n3,vbotfp);
}
} else {
for(iz=0;iz<nlayer;iz++) {
getnparstring(iz+1,"layers",&layers);
layerfp=efopen(layers,"r");
ierr = fgetusghdr(layerfp,&usghlayer);
if(ierr!=0) err(" error open layers=%s \n",layers);
if(usghin.n2!=usghlayer.n1) err("check %s header n1",layers);
if(usghin.n3!=usghlayer.n2) err("check %s header n2",layers);
if(usghin.o2!=usghlayer.o1) err("check %s header o1",layers);
if(usghin.o3!=usghlayer.o2) err("check %s header o2",layers);
if(usghin.d2!=usghlayer.d1) err("check %s header d1",layers);
if(usghin.d3!=usghlayer.d2) err("check %s header d2",layers);
efseek(layerfp,0,0);
efread(zs+iz*n2*n3,sizeof(float),n2*n3,layerfp);
efclose(layerfp);
}
for(iz=0;iz<nglayer;iz++) {
getnparstring(iz+1,"glayers",&glayers);
glayerfp=efopen(glayers,"r");
ierr = fgetusghdr(glayerfp,&usghglayer);
if(ierr!=0) err(" error open layers=%s \n",layers);
if(usghin.n2!=usghglayer.n1) err("check %s header n1",glayers);
if(usghin.n3!=usghglayer.n2) err("check %s header n2",glayers);
if(usghin.o2!=usghglayer.o1) err("check %s header o1",glayers);
if(usghin.o3!=usghglayer.o2) err("check %s header o2",glayers);
if(usghin.d2!=usghglayer.d1) err("check %s header d1",glayers);
if(usghin.d3!=usghglayer.d2) err("check %s header d2",glayers);
efseek(glayerfp,0,0);
efread(vs+iz*n2*n3,sizeof(float),n2*n3,glayerfp);
efclose(glayerfp);
}
nz = nlayer - 1;
}
/* compute mini layer depth and grid values */
if(nlayer==0) {
for(i2=0;i2<n2*n3;i2++) {
zs[i2] = ztop[i2];
vs[i2] = vtop[i2];
}
tmp = 0.;
for(iz=0;iz<nz;iz++) tmp = tmp + dzrl[iz];
vscale = 0.;
zscale = 0.;
for(iz=1;iz<nz;iz++) {
zscale += dzrl[iz-1]/tmp;
if(ginterp==0) {
vscale += dzrl[iz-1]/tmp;
} else {
vscale = (float)iz / nz;
}
for(i2=0;i2<n2*n3;i2++) {
zs[i2+iz*n2*n3] = ztop[i2] +
zscale*(zbot[i2]-ztop[i2]);
vs[i2+iz*n2*n3] = vtop[i2] +
vscale*(vbot[i2]-vtop[i2]);
}
}
for(i2=0;i2<n2*n3;i2++) {
zs[i2+nz*n2*n3] = zbot[i2];
vs[i2+nz*n2*n3] = vbot[i2];
}
}
/* compute smoothing window for mini layers */
tmp = 0.;
for(iz=0;iz<nz;iz++) tmp = tmp + dzrl[iz];
scale = 0.;
sm2s[0] = sm2top;
sm3s[0] = sm3top;
for(iz=1;iz<nz+1;iz++) {
scale += dzrl[iz-1]/tmp;
sm2s[iz] = sm2top + scale*(sm2bot-sm2top);
sm3s[iz] = sm3top + scale*(sm3bot-sm3top);
}
/* compute grid values at the mini layers if not specified */
fseek2g(infp,0,0);
if( ( (ivtop==0 || ivbot==0) && nlayer==0 ) || (nglayer==0 && nlayer>0) ) {
for(i3=0;i3<n3;i3++) {
for(i2=0;i2<n2;i2++) {
efread(grid,sizeof(float),n1,infp);
for(iz=0;iz<nz+1;iz++) {
tmp = (zs[i2+i3*n2+iz*n2*n3] - o1)/d1 + 0.5;
i1 = tmp;
if(i1<0) {
vs[i2+i3*n2+iz*n2*n3] = grid[0];
} else if(i1>=n1-1) {
vs[i2+i3*n2+iz*n2*n3] = grid[n1-1];
} else {
vs[i2+i3*n2+iz*n2*n3] = grid[i1]+
(tmp-i1)*(grid[i1+1]-grid[i1]);
}
}
}
}
} else if(ivtop==-1 && ivbot==-1) {
for(i3=0;i3<n3;i3++) {
for(i2=0;i2<n2;i2++) {
for(iz=0;iz<nz+1;iz++) {
tmp = (zs[i2+i3*n2+iz*n2*n3] - ztop[i3*n2+i2]);
vs[i2+i3*n2+iz*n2*n3] = g0 + r0 * tmp;
}
}
}
}
/* smooth mini layer grids */
for(iz=0;iz<nz+1;iz++) {
tmp = sm2s[iz]/d2;
ismx = tmp + 1.5;
tmp = sm3s[iz]/d3;
ismy = tmp + 1.5;
fsmx = (float*) emalloc(ismx*sizeof(float));
fsmy = (float*) emalloc(ismy*sizeof(float));
/* 2d smoothing */
smth2d_(vs+iz*n2*n3,work,fsmx,fsmy,&n2,&n3,&ismx,&ismy);
/*
dump2xplot(vs+iz*n2*n3,n2,n3,0,"vsmoth");
*/
free(fsmx);
free(fsmy);
}
/* output grid */
fseek2g(infp,0,0);
for(i3=0;i3<n3;i3++) {
for(i2=0;i2<n2;i2++) {
efread(grid,sizeof(float),n1,infp);
itmp = i2+i3*n2;
if(nlayer==0) {
top = ztop[itmp];
bot = zbot[itmp];
} else {
top = zs[itmp];
bot = zs[itmp+(nlayer-1)*n2*n3];
}
tmp = (top - o1)/d1 + 0.5;
i1top = tmp;
tmp = (bot - o1)/d1 + 0.5;
i1bot = tmp;
if(i1top<0) i1top = 0;
if(i1bot>n1-1) i1bot = n1-1;
for(i1=i1top;i1<=i1bot;i1++) {
z = o1 + i1*d1;
if(z>=zs[itmp] && z<=zs[itmp+nz*n2*n3]) {
for(iz=0;iz<nz;iz++) {
if( z == zs[itmp+iz*n2*n3] && z == zs[itmp+(iz+1)*n2*n3] ){
grid[i1] = vs[itmp+iz*n2*n3];
}else if(z>=zs[itmp+iz*n2*n3] && z<zs[itmp+(iz+1)*n2*n3]) {
tmp = (z-zs[itmp+iz*n2*n3]) /
(zs[itmp+(iz+1)*n2*n3]-zs[itmp+iz*n2*n3]);
grid[i1] = vs[itmp+iz*n2*n3] +
tmp*(vs[itmp+(iz+1)*n2*n3]-vs[itmp+iz*n2*n3]);
if( grid[i1] != grid[i1] ){
fprintf( stderr ,"NaN at i3=%d " ,i3 );
fprintf( stderr ,"i2=%d i1=%d\n" ,i2, i3);
}
break;
}
}
}
}
if(igabovetop==1) {
for(i1=0;i1<i1top;i1++) {
grid[i1] = gabovetop;
}
}
if(igbelowbot==1) {
for(i1=i1bot;i1<n1;i1++) {
grid[i1] = gbelowbot;
}
}
if(i2==0 && i3==0) {
gmin = grid[0];
gmax = grid[0];
}
for(i1=0;i1<n1;i1++) {
if(gmin>grid[i1]) gmin = grid[i1];
if(gmax<grid[i1]) gmax = grid[i1];
}
if( grid[0] != grid[0] ){
fprintf( stderr ,"NaN\n" );
}
efwrite(grid,sizeof(float),n1,outfp);
}
}
usghin.gmin = gmin;
usghin.gmax = gmax;
ierr = fputusghdr(outfp,&usghin);
free(ztop);
free(zbot);
free(vtop);
free(vbot);
free(zs);
free(vs);
free(work);
free(grid);
exit(0);
}
int
main(int argc, char **argv)
{
char *key=NULL; /* header key word from segy.h */
char *type=NULL; /* ... its type */
int index; /* ... its index */
Value val; /* ... its value */
float fval; /* ... its value cast to float */
float *xshift=NULL; /* array of key shift curve values */
float *tshift=NULL; /* ... shift curve time values */
int nxshift; /* number of key shift values */
int ntshift; /* ... shift time values */
int nxtshift; /* number of shift values */
int it; /* sample counter */
int itr; /* trace counter */
int nt; /* number of time samples */
int ntr=0; /* number of traces */
int *inshift=NULL; /* array of (integer) time shift values
used for positioning shifted trace in
data[][] */
float dt; /* time sampling interval */
cwp_String xfile=""; /* file containing positions by key */
FILE *xfilep=NULL; /* ... its file pointer */
cwp_String tfile=""; /* file containing times */
FILE *tfilep=NULL; /* ... its file pointer */
int verbose; /* flag for printing information */
char *tmpdir=NULL; /* directory path for tmp files */
cwp_Bool istmpdir=cwp_false;/* true for user-given path */
int median; /* flag for median filter */
int nmed; /* no. of traces to median filter */
int nmix; /* number of traces to mix over */
int imix; /* mixing counter */
float *mix=NULL; /* array of mix values */
int sign; /* flag for up/down shift */
int shiftmin=0; /* minimum time shift (in samples) */
int shiftmax=0; /* maximum time shift (in samples) */
int ntdshift; /* nt + shiftmax */
size_t mixbytes; /* size of mixing array */
size_t databytes; /* size of data array */
size_t shiftbytes; /* size of data array */
float *temp=NULL; /* temporary array */
float *dtemp=NULL; /* temporary array */
float *stemp=NULL; /* rwh median sort array */
float **data=NULL; /* mixing array */
int subtract; /* flag for subtracting shifted data */
/* rwh extra pointers for median sort */
int first; /* start pointer in ring buffer */
int middle; /* middle pointer in ring buffer */
int last; /* last pointer in ring buffer */
int halfwidth; /* mid point */
int trcount; /* pointer to current start trace number */
float tmp; /* temp storage for bubble sort */
int rindex; /* wrap around index for ring buffer */
int jmix; /* internal pointer for bubble sort */
/* Initialize */
initargs(argc, argv);
requestdoc(1);
/* Get parameters */
if (!(getparstring("xfile",&xfile) && getparstring("tfile",&tfile))) {
if (!(nxshift = countparval("xshift")))
err("must give xshift= vector");
if (!(ntshift = countparval("tshift")))
err("must give tshift= vector");
if (nxshift != ntshift)
err("lengths of xshift, tshift must be the same");
xshift = ealloc1float(nxshift); getparfloat("xshift", xshift);
tshift = ealloc1float(nxshift); getparfloat("tshift", tshift);
} else {
MUSTGETPARINT("nshift",&nxtshift);
nxshift = nxtshift;
xshift = ealloc1float(nxtshift);
tshift = ealloc1float(nxtshift);
if((xfilep=fopen(xfile,"r"))==NULL)
err("cannot open xfile=%s\n",xfile);
if (fread(xshift,sizeof(float),nxtshift,xfilep)!=nxtshift)
err("error reading xfile=%s\n",xfile);
fclose(xfilep);
if((tfilep=fopen(tfile,"r"))==NULL)
err("cannot open tfile=%s\n",tfile);
if (fread(tshift,sizeof(float),nxtshift,tfilep)!=nxtshift)
err("error reading tfile=%s\n",tfile);
fclose(tfilep);
}
if (!getparstring("key", &key)) key = "tracl";
/* Get key type and index */
type = hdtype(key);
index = getindex(key);
/* Get mix weighting values values */
if ((nmix = countparval("mix"))!=0) {
mix = ealloc1float(nmix);
getparfloat("mix",mix);
/* rwh check nmix is odd */
if (nmix%2==0) {
err("number of mixing coefficients must be odd");
}
} else {
nmix = 5;
mix = ealloc1float(nmix);
mix[0] = VAL0;
mix[1] = VAL1;
mix[2] = VAL2;
mix[3] = VAL3;
mix[4] = VAL4;
}
/* Get remaning parameters */
if (!getparint("median",&median)) median = 0;
if (!getparint("nmed",&nmed) && median) nmed = 5;
if (!getparint("sign",&sign)) sign = -1;
if (!getparint("subtract",&subtract)) subtract = 1;
if (!getparint("verbose", &verbose)) verbose = 0;
/* rwh check nmed is odd */
if (median && nmed%2==0) {
nmed=nmed+1;
warn("increased nmed by 1 to ensure it is odd");
}
/* Look for user-supplied tmpdir */
if (!getparstring("tmpdir",&tmpdir) &&
!(tmpdir = getenv("CWP_TMPDIR"))) tmpdir="";
if (!STREQ(tmpdir, "") && access(tmpdir, WRITE_OK))
err("you can't write in %s (or it doesn't exist)", tmpdir);
/* rwh fix for median filter if median true set nmix=nmed */
if (!median) {
/* Divide mixing weights by number of traces to mix */
for (imix = 0; imix < nmix; ++imix)
mix[imix]=mix[imix]/((float) nmix);
} else {
nmix=nmed;
}
/* Get info from first trace */
if (!gettr(&tr)) err("can't read first trace");
if (!tr.dt) err("dt header field must be set");
dt = ((double) tr.dt)/1000000.0;
nt = (int) tr.ns;
databytes = FSIZE*nt;
/* Tempfiles */
if (STREQ(tmpdir,"")) {
tracefp = etmpfile();
headerfp = etmpfile();
if (verbose) warn("using tmpfile() call");
} else { /* user-supplied tmpdir */
char directory[BUFSIZ];
strcpy(directory, tmpdir);
strcpy(tracefile, temporary_filename(directory));
strcpy(headerfile, temporary_filename(directory));
/* Trap signals so can remove temp files */
signal(SIGINT, (void (*) (int)) closefiles);
signal(SIGQUIT, (void (*) (int)) closefiles);
signal(SIGHUP, (void (*) (int)) closefiles);
signal(SIGTERM, (void (*) (int)) closefiles);
tracefp = efopen(tracefile, "w+");
headerfp = efopen(headerfile, "w+");
istmpdir=cwp_true;
if (verbose) warn("putting temporary files in %s", directory);
}
/* Read headers and data while getting a count */
do {
++ntr;
efwrite(&tr, 1, HDRBYTES, headerfp);
efwrite(tr.data, 1, databytes, tracefp);
} while (gettr(&tr));
rewind(headerfp);
rewind(tracefp);
/* Allocate space for inshift vector */
inshift = ealloc1int(ntr);
/* Loop over headers */
for (itr=0; itr<ntr; ++itr) {
float tmin=tr.delrt/1000.0;
float t;
/* Read header values */
efread(&tr, 1, HDRBYTES, headerfp);
/* Get value of key and convert to float */
gethval(&tr, index, &val);
fval = vtof(type,val);
/* Linearly interpolate between (xshift,tshift) values */
intlin(nxshift,xshift,tshift,tmin,tshift[nxshift-1],1,&fval,&t);
/* allow for fractional shifts -> requires interpolation */
inshift[itr] = NINT((t - tmin)/dt);
/* Find minimum and maximum shifts */
if (itr==0) {
shiftmax=inshift[0];
shiftmin=inshift[0];
} else {
shiftmax = MAX(inshift[itr],shiftmax);
shiftmin = MIN(inshift[itr],shiftmin);
}
}
rewind(headerfp);
rewind(tracefp);
if (verbose) {
for (itr=0;itr<ntr;itr++)
warn("inshift[%d]=%d",itr,inshift[itr]);
}
/* Compute databytes per trace and bytes in mixing panel */
ntdshift = nt + shiftmax;
shiftbytes = FSIZE*ntdshift;
mixbytes = shiftbytes*nmix;
if (verbose) {
warn("nt=%d shiftmax=%d shiftmin=%d",nt,shiftmax,shiftmin);
warn("ntdshift=%d shiftbytes=%d mixbytes=%d",
ntdshift,shiftbytes,mixbytes);
}
/* Allocate space and zero data array */
data = ealloc2float(ntdshift,nmix);
temp = ealloc1float(ntdshift);
dtemp = ealloc1float(nt);
memset( (void *) data[0], 0, mixbytes);
/* rwh array for out of place bubble sort (so we do not corrupt order in ring buffer */
stemp = ealloc1float(nmix);
/* rwh first preload ring buffer symmetrically (now you know why nmix must be odd) */
trcount=-1;
halfwidth=(nmix-1)/2+1;
first = 0;
last = nmix-1;
middle = (nmix-1)/2;
for (itr=0; itr<halfwidth; itr++) {
efread(tr.data, 1, databytes, tracefp);
trcount++;
for(it=0; it<nt; ++it) {
/* sign to account for positive or negative shift */
/* tr.data needs to be interpolated for non-integer shifts */
data[middle-itr][it + shiftmax + sign*inshift[itr]] = tr.data[it];
data[middle+itr][it + shiftmax + sign*inshift[itr]] = tr.data[it];
}
}
/* Loop over traces performing median filtering */
for (itr=0; itr<ntr; ++itr) {
/* paste header and data on output trace */
efread(&tr, 1, HDRBYTES, headerfp);
/* Zero out temp and dtemp */
memset((void *) temp, 0, shiftbytes);
memset((void *) dtemp, 0, databytes);
/* Loop over time samples */
for (it=0; it<nt; ++it) {
/* Weighted moving average (mix) ? */
if (!median) {
for(imix=0; imix<nmix; ++imix) {
temp[it] += data[imix][it] * mix[imix];
}
} else {
/* inlcude median stack */
/* rwh do bubble sort and choose median value */
for(imix=0; imix<nmix; ++imix) {
stemp[imix]=data[imix][it];
}
for (imix=0; imix<nmix-1; imix++) {
for (jmix=0; jmix<nmix-1-imix; jmix++) {
if (stemp[jmix+1] < stemp[jmix]) {
tmp = stemp[jmix];
stemp[jmix] = stemp[jmix+1];
stemp[jmix+1] = tmp;
}
}
}
temp[it] = stemp[middle];
}
/* shift back mixed data and put into dtemp */
if (subtract) {
if ((it - shiftmax - sign*inshift[itr])>=0)
dtemp[it - shiftmax - sign*inshift[itr]] = data[middle][it]-temp[it];
} else {
if ((it - shiftmax)>=0)
dtemp[it - shiftmax - sign*inshift[itr]] = temp[it];
}
}
memcpy((void *) tr.data,(const void *) dtemp,databytes);
/* Bump rows of data[][] over by 1 to free first row for next tr.data */
for (imix=nmix-1; 0<imix; --imix)
memcpy((void *) data[imix],(const void *) data[imix-1],shiftbytes);
/*for (it=0; it<nt; ++it)
data[imix][it] = data[imix-1][it];*/
/* Write output trace */
tr.ns = nt;
puttr(&tr);
/* read next trace into buffer */
if (trcount < ntr) {
efread(tr.data, 1, databytes, tracefp);
trcount++;
/* read tr.data into first row of mixing array */
/* WMH: changed ntdshift to nt */
for(it=0; it<nt; ++it) {
/* sign to account for positive or negative shift */
/* tr.data needs to be interpolated for non-integer shifts */
data[0][it + shiftmax + sign*inshift[trcount]] = tr.data[it];
}
} else {
rindex=2*(trcount-ntr);
memcpy((void *) data[0],(const void *) data[rindex],shiftbytes);
trcount++;
}
}
if (verbose && subtract) warn("filtered data subtracted from input");
/* Clean up */
efclose(headerfp);
if (istmpdir) eremove(headerfile);
efclose(tracefp);
if (istmpdir) eremove(tracefile);
return(CWP_Exit());
}
int main(int argc, char **argv) {
char *coeff_x, *coeff_x2, *coeff_x3, *coeff_x4, file[BUFSIZ];
struct GRD_HEADER grd_x, grd_x2, grd_x3, grd_x4;
struct GMT_EDGEINFO edgeinfo_x, edgeinfo_x2, edgeinfo_x3, edgeinfo_x4;
struct GMT_BCR bcr_x, bcr_x2, bcr_x3, bcr_x4;
double x_loc, y_loc, value_coeff_x, value_coeff_x2, value_coeff_x3, value_coeff_x4;
char temp[256];
cwp_String pfile;
FILE *fpp;
short verbose, check;
int kount, nump1;
double sum, error1, sign;
double delta, thresh;
double *vzero_opt, *k_opt;
double *datain, *samp, *xloc_array, *yloc_array;
double depth_water, factor, num, sample;
double vzero, k;
double *wb_twt_array, *wb_z_array;
double error, x, y, zero;
register int i;
initargs(argc, argv);
argc = GMT_begin (argc, argv);
if (!getparstring("pfile",&pfile)) pfile = "tops.lis";
if (!getparshort("verbose", &verbose)) verbose = 1;
if (!getpardouble("delta", &delta)) delta = 0.00001;
if (!getpardouble("thresh", &thresh)) thresh = 0.01;
zero = 0.0;
if (!getparstring("coeff_x", &coeff_x)) coeff_x="wb.twt.grd";
if (!getparstring("coeff_x2", &coeff_x2)) coeff_x2="wvavg.dat.trimmed.sample.smooth.grd";
if (!getparstring("coeff_x3", &coeff_x3)) coeff_x3="vzero.seismic.dat.trimmed.sample.smooth.grd";
if (!getparstring("coeff_x4", &coeff_x4)) coeff_x4="k.seismic.dat.trimmed.sample.smooth.grd";
if ( verbose ) {
fprintf ( stderr, "\n" );
fprintf ( stderr, "WB TWT (ms.) GMT grid file name = %s\n", coeff_x );
fprintf ( stderr, "WB VAVG (m) GMT grid file name = %s\n", coeff_x2 );
fprintf ( stderr, "Seismic VZERO GMT grid file name = %s\n", coeff_x3 );
fprintf ( stderr, "Seismic K GMT grid file name = %s\n", coeff_x4 );
fprintf ( stderr, "Delta = %.10f\n", delta );
fprintf ( stderr, "Threshold = %f\n", thresh );
}
GMT_boundcond_init (&edgeinfo_x);
GMT_boundcond_init (&edgeinfo_x2);
GMT_boundcond_init (&edgeinfo_x3);
GMT_boundcond_init (&edgeinfo_x4);
GMT_grd_init (&grd_x, argc, argv, FALSE);
GMT_grd_init (&grd_x2, argc, argv, FALSE);
GMT_grd_init (&grd_x3, argc, argv, FALSE);
GMT_grd_init (&grd_x4, argc, argv, FALSE);
if (GMT_read_grd_info (coeff_x, &grd_x)) fprintf (stderr, "%s: Error opening file %s\n", GMT_program, file);
if (GMT_read_grd_info (coeff_x2, &grd_x2)) fprintf (stderr, "%s: Error opening file %s\n", GMT_program, file);
if (GMT_read_grd_info (coeff_x3, &grd_x3)) fprintf (stderr, "%s: Error opening file %s\n", GMT_program, file);
if (GMT_read_grd_info (coeff_x4, &grd_x4)) fprintf (stderr, "%s: Error opening file %s\n", GMT_program, file);
f1 = (float *) GMT_memory (VNULL, (size_t)((grd_x.nx + 4) * (grd_x.ny + 4)), sizeof(float), GMT_program);
f2 = (float *) GMT_memory (VNULL, (size_t)((grd_x2.nx + 4) * (grd_x2.ny + 4)), sizeof(float), GMT_program);
f3 = (float *) GMT_memory (VNULL, (size_t)((grd_x3.nx + 4) * (grd_x3.ny + 4)), sizeof(float), GMT_program);
f4 = (float *) GMT_memory (VNULL, (size_t)((grd_x4.nx + 4) * (grd_x4.ny + 4)), sizeof(float), GMT_program);
GMT_pad[0] = GMT_pad[1] = GMT_pad[2] = GMT_pad[3] = 2;
GMT_boundcond_param_prep (&grd_x, &edgeinfo_x);
GMT_boundcond_param_prep (&grd_x2, &edgeinfo_x2);
GMT_boundcond_param_prep (&grd_x3, &edgeinfo_x3);
GMT_boundcond_param_prep (&grd_x4, &edgeinfo_x4);
GMT_boundcond_set (&grd_x, &edgeinfo_x, GMT_pad, f1);
GMT_boundcond_set (&grd_x2, &edgeinfo_x2, GMT_pad, f2);
GMT_boundcond_set (&grd_x3, &edgeinfo_x3, GMT_pad, f3);
GMT_boundcond_set (&grd_x4, &edgeinfo_x4, GMT_pad, f4);
GMT_bcr_init (&grd_x, GMT_pad, BCR_BSPLINE, 1, &bcr_x);
GMT_bcr_init (&grd_x2, GMT_pad, BCR_BSPLINE, 1, &bcr_x2);
GMT_bcr_init (&grd_x3, GMT_pad, BCR_BSPLINE, 1, &bcr_x3);
GMT_bcr_init (&grd_x4, GMT_pad, BCR_BSPLINE, 1, &bcr_x4);
GMT_read_grd (coeff_x, &grd_x, f1, 0.0, 0.0, 0.0, 0.0, GMT_pad, FALSE);
GMT_read_grd (coeff_x2, &grd_x2, f2, 0.0, 0.0, 0.0, 0.0, GMT_pad, FALSE);
GMT_read_grd (coeff_x3, &grd_x3, f3, 0.0, 0.0, 0.0, 0.0, GMT_pad, FALSE);
GMT_read_grd (coeff_x4, &grd_x4, f4, 0.0, 0.0, 0.0, 0.0, GMT_pad, FALSE);
fpp = efopen (pfile, "r");
kount = 0;
while (NULL != fgets ( temp, sizeof(temp), fpp )) {
++kount;
(void) sscanf ( ((&(temp[0]))), "%lf%lf%lf%lf", &x_loc, &y_loc, &num, &sample );
}
if ( verbose != 0) {
fprintf (stderr,"\n");
fprintf (stderr,"Data file name = %s, number of input samples = %d\n", pfile, kount);
fprintf (stderr,"\n");
}
samp = ealloc1double ( kount );
datain = ealloc1double ( kount );
xloc_array = ealloc1double ( kount );
yloc_array = ealloc1double ( kount );
vzero_opt = ealloc1double ( kount );
k_opt = ealloc1double ( kount );
wb_twt_array = ealloc1double ( kount );
wb_z_array = ealloc1double ( kount );
rewind ( fpp );
kount = -1;
while (NULL != fgets ( temp, sizeof(temp), fpp )) {
++kount;
(void) sscanf ( ((&(temp[0]))), "%lf%lf%lf%lf", &x_loc, &y_loc, &num, &sample );
xloc_array[kount] = x_loc;
yloc_array[kount] = y_loc;
samp[kount] = num;
datain[kount] = sample;
if ( verbose == 2 ) fprintf ( stderr, "kount = %5d, x_loc = %12.2f, y_loc = %12.2f, num = %8.2f, sample = %8.2f\n", kount, xloc_array[kount], yloc_array[kount], samp[kount], datain[kount] );
}
if ( verbose == 2 ) fprintf ( stderr, "\n" );
efclose (fpp);
factor = 0.0005;
nump1 = kount + 1;
depth_water = error = zero;
for ( i=0; i<=kount; i++ ) {
check = 0;
x_loc = xloc_array[i];
y_loc = yloc_array[i];
if ( x_loc >= grd_x.x_min && x_loc <= grd_x.x_max && y_loc >= grd_x.y_min && y_loc <= grd_x.y_max ) check = 1;
if ( check ) {
value_coeff_x = GMT_get_bcr_z (&grd_x, x_loc, y_loc, f1, &edgeinfo_x, &bcr_x);
value_coeff_x2 = GMT_get_bcr_z (&grd_x2, x_loc, y_loc, f2, &edgeinfo_x2, &bcr_x2);
value_coeff_x3 = GMT_get_bcr_z (&grd_x3, x_loc, y_loc, f3, &edgeinfo_x3, &bcr_x3);
value_coeff_x4 = GMT_get_bcr_z (&grd_x4, x_loc, y_loc, f4, &edgeinfo_x4, &bcr_x4);
if (GMT_is_dnan (value_coeff_x) || GMT_is_dnan (value_coeff_x2) || GMT_is_dnan (value_coeff_x3) || GMT_is_dnan (value_coeff_x4) ) {
check = 0;
} else {
if ( value_coeff_x < 0.0 ) value_coeff_x *= -1.0;
if ( value_coeff_x2 < 0.0 ) value_coeff_x2 *= -1.0;
if ( value_coeff_x3 < 0.0 ) value_coeff_x3 *= -1.0;
if ( value_coeff_x4 < 0.0 ) value_coeff_x4 *= -1.0;
samp[i] -= value_coeff_x;
depth_water = value_coeff_x * value_coeff_x2 * factor;
datain[i] -= depth_water;
wb_twt_array[i] = value_coeff_x;
wb_z_array[i] = depth_water;
if ( verbose == 3 ) fprintf ( stderr, "num = %5d, xloc = %10.2f yloc = %10.2f, WB TWT = %8.2f ms., WB Depth = %8.2f m., WB VEL = %8.2f mps., Vzero = %20.15f, K = %20.15f\n",
i, x_loc, y_loc, value_coeff_x, depth_water, value_coeff_x2, value_coeff_x3, value_coeff_x4 );
vzero_opt[i] = value_coeff_x3;
k_opt[i] = value_coeff_x4;
}
}
}
if ( verbose == 3 ) fprintf ( stderr, "\n" );
sum = zero;
for ( i=0; i<=kount; i++ ) {
vzero = vzero_opt[i];
k = k_opt[i];
x = samp[i];
y = ( vzero / k ) * ( exp ( k * x * factor ) - 1.0 );
error += abs ( y - datain[i] );
if ( verbose == 3 ) fprintf ( stderr, "%-5d %12.2f %12.2f %12.2f %12.4f %12.4f\n", i, x, datain[i], y, y - datain[i], error );
sign = 1.0;
error = error1 = y - datain[i];
for (;;) {
if ( abs(error1) < thresh ) break;
vzero = vzero_opt[i];
k += ( delta * sign );
x = samp[i];
y = ( vzero / k ) * ( exp ( k * x * factor ) - 1.0 );
error1 = y - datain[i];
if ( verbose == 2 ) fprintf ( stderr, "%-5d %12.2f %12.2f %12.2f %12.4f\n", i, x, datain[i], y, error1 );
if ( (error1 > zero && error1 > error) || (error1 < zero && error1 < error) ) sign *= -1.0;
}
sum += abs ( y - datain[i] );
if ( verbose ) {
fprintf ( stderr, "%-5d %12.2f %12.2f %12.2f %12.4f %12.4f\n", i, x, datain[i], y, y - datain[i], sum );
fprintf ( stderr, "%12.2f %12.2f ", xloc_array[i], yloc_array[i] );
fprintf ( stderr, "%30.25f %30.25f %8.2f %8.2f %8.2f\n", vzero, k, wb_twt_array[i], wb_z_array[i], sum / (float) nump1 );
}
printf ( "%12.2f %12.2f ", xloc_array[i], yloc_array[i] );
printf ( "%30.25f %30.25f %8.2f %8.2f %8.2f\n", vzero, k, wb_twt_array[i], wb_z_array[i], sum / (float) nump1 );
}
free1double (samp);
free1double (datain);
free1double (xloc_array);
free1double (yloc_array);
free1double (vzero_opt);
free1double (k_opt);
free1double (wb_twt_array);
free1double (wb_z_array);
GMT_free ((void *)f1);
GMT_free ((void *)f2);
GMT_free ((void *)f3);
GMT_free ((void *)f4);
GMT_end (argc, argv);
return EXIT_SUCCESS;
}
int main(int argc, char **argv)
{
char *plotcmd; /* build pswigb command for popen */
float *trbuf; /* trace buffer */
FILE *plotfp; /* fp for plot data */
int nt; /* number of samples on trace */
int ntr; /* number of traces */
int verbose; /* verbose flag */
float d1; /* time/depth sample rate */
float d2; /* trace/dx sample rate */
float f1; /* tmin/zmin */
float f2; /* tracemin/xmin */
cwp_Bool seismic; /* is this seismic data? */
cwp_Bool have_ntr=cwp_false;/* is ntr known from header or user? */
char *tmpdir; /* directory path for tmp files */
cwp_Bool istmpdir=cwp_false;/* true for user given path */
char *cwproot; /* value of CWPROOT environment variable*/
char *bindir; /* directory path for tmp files */
/* Support for irregularly spaced data */
cwp_String key; /* header key word with x2 information */
cwp_String type1=NULL; /* ... its type */
int index1=0; /* ... its index */
Value val; /* value of key */
Value scale; /* Value of scaler */
cwp_String type2=NULL; /* ... its type */
int index2=0; /* ... its index */
cwp_Bool isDepth=cwp_false; /* Is this key a type of depth? */
cwp_Bool isCoord=cwp_false; /* Is this key a type of coordinate? */
cwp_Bool irregular=cwp_false; /* if true, reading x2 from header */
cwp_String x2string; /* string of x2 values */
off_t x2len; /* ... its length */
cwp_String style; /* style parameter */
/* Initialize */
initargs(argc, argv);
requestdoc(1);
/* Get info from first trace */
if (!gettr(&tr)) err("can't get first trace");
seismic = ISSEISMIC(tr.trid);
nt = tr.ns;
ntr = tr.ntr;
if (ntr) have_ntr = cwp_true;
if (!getparint("verbose", &verbose)) verbose=0;
if (!getparfloat("d1", &d1)) {
if (tr.d1) d1 = tr.d1;
else if (tr.dt) d1 = ((double) tr.dt)/1000000.0;
else {
if (seismic) {
d1 = 0.004;
warn("tr.dt not set, assuming dt=0.004");
} else { /* non-seismic data */
d1 = 1.0;
warn("tr.d1 not set, assuming d1=1.0");
}
}
}
if (!getparfloat("f1", &f1)) {
if (tr.f1) f1 = tr.f1;
else if (tr.delrt) f1 = (float) tr.delrt/1000.0;
else f1 = 0.0;
}
/* Get or set ntr */
if (getparint("n2", &ntr) || getparint("ntr", &ntr)) have_ntr = cwp_true;
if (!getparfloat("d2", &d2)) d2 = (tr.d2) ? tr.d2 : 1.0;
if (!getparfloat("f2", &f2)) {
if (tr.f2) f2 = tr.f2;
else if (tr.tracr) f2 = (float) tr.tracr;
else if (tr.tracl) f2 = (float) tr.tracl;
else if (seismic) f2 = 1.0;
else f2 = 0.0;
}
if (!getparstring("style", &style)) style = "seismic";
if (getparstring("key", &key)) {
type1 = hdtype(key);
if ( (index1 = getindex(key)) == -1 )
err("%s: keyword not in segy.h: '%s'", __FILE__, key);
irregular = cwp_true;
isDepth = IS_DEPTH(key);
isCoord = IS_COORD(key);
if (isDepth) {
index2 = getindex("scalel");
type2 = hdtype("scalel");
} else if (isCoord) {
index2 = getindex("scalco");
type2 = hdtype("scalco");
}
}
/* Look for user-supplied tmpdir */
if (!getparstring("tmpdir",&tmpdir) &&
!(tmpdir = getenv("CWP_TMPDIR"))) tmpdir="";
if (!STREQ(tmpdir, "") && access(tmpdir, WRITE_OK))
err("you can't write in %s (or it doesn't exist)", tmpdir);
/* See if CWPBIN environment variable is not set */
if (!(bindir = getenv("CWPBIN"))) { /* construct bindir from CWPROOT */
bindir = (char *) emalloc(BUFSIZ);
/* Get value of CWPROOT environment variable */
if (!(cwproot = getenv("CWPROOT"))) cwproot ="" ;
if (STREQ(cwproot, "")) {
warn("CWPROOT environment variable is not set! ");
err("Set CWPROOT in shell environment as per instructions in CWP/SU Installation README files");
}
/* then bindir = $CWPROOT/bin */
sprintf(bindir, "%s/bin", cwproot);
}
strcat(bindir,"/"); /* put / at the end of bindir */
/* Allocate trace buffer */
trbuf = ealloc1float(nt);
if (!have_ntr || irregular ) { /* count traces */
if (verbose) {
if (irregular) {
warn("trace spacing from header field %s",key);
warn("... getting positions");
} else {
warn("n2 not getparred and "
"ntr header field not set");
warn(".... counting traces");
}
}
/* Create temporary "file" to hold data */
if (STREQ(tmpdir,"")) {
datafp = etmpfile();
if (irregular) x2fp = etmpfile();
if (verbose) warn("using tmpfile() call");
} else { /* user-supplied tmpdir */
char directory[BUFSIZ];
strcpy(directory, tmpdir);
strcpy(datafile, temporary_filename(directory));
strcpy(x2file, temporary_filename(directory));
/* Handle user interrupts */
signal(SIGINT, (void (*) (int)) closefiles);
signal(SIGQUIT, (void (*) (int)) closefiles);
signal(SIGHUP, (void (*) (int)) closefiles);
signal(SIGTERM, (void (*) (int)) closefiles);
datafp = efopen(datafile, "w+");
if (irregular) x2fp = efopen(x2file, "w+");
istmpdir=cwp_true;
if (verbose)
warn("putting temporary files in %s", directory);
}
/* Loop over input data and read to temporary file */
ntr = 0;
if(irregular ) {
float x,xmin=FLT_MAX,xmax=-FLT_MAX;
fprintf(x2fp,"x2=");
do {
if(ntr) fprintf(x2fp,",");
++ntr;
gethval(&tr,index1,&val);
if (isDepth || isCoord) {
gethval(&tr,index2,&scale);
x = (float) (vtod(type1,val) *
pow(10.0,vtod(type2,scale)));
} else
x = vtof(type1,val);
fprintf(x2fp,"%g",x);
xmin = MIN(xmin,x);
xmax = MAX(xmax,x);
if (isDepth && STREQ(style,"vsp")) {
int i;
for (i = 0; i < nt; ++i) tr.data[i] *= -1.0;
}
efwrite(tr.data, FSIZE, nt, datafp);
} while (gettr(&tr));
/* Flip vertical axis if style = vsp */
if (isDepth && STREQ(style,"vsp")) {
fprintf(x2fp," x2beg=%g x2end=%g",xmax,xmin);
style = "normal";
}
if(xmin==xmax) {
warn("values in header %s all equal,",key);
warn("using f2=%f d2=%f",f2,d2);
irregular=cwp_false;
have_ntr=cwp_false;
efclose(x2fp);
if (istmpdir) eremove(x2file);
}
} else {
do {
++ntr;
efwrite(tr.data, FSIZE, nt, datafp);
} while (gettr(&tr));
/* Save naive user */
if (STREQ(style,"vsp")) {
style = "normal";
warn("style=vsp requires key= to be set");
}
}
}
/* Set up pswigb command line */
if (irregular ) {
x2len = (off_t) eftell( x2fp );
x2string = (char *) emalloc( ++x2len );
rewind(x2fp);
fread(x2string,sizeof(char),x2len,x2fp);
plotcmd = (char *) emalloc(x2len+BUFSIZ);
if (STREQ(style,"vsp")) {
style = "normal";
}
sprintf(plotcmd, "%spswigb n1=%d d1=%f f1=%f %s style=%s", bindir,
nt, d1, f1, x2string, style);
free(x2string);
} else {
if (STREQ(style,"vsp")) {
style = "normal";
}
plotcmd = (char *) emalloc(BUFSIZ);
sprintf(plotcmd,
"%spswigb n1=%d n2=%d d1=%f d2=%f f1=%f f2=%f style=%s", bindir,
nt, ntr, d1, d2, f1, f2, style);
}
for (--argc, ++argv; argc; --argc, ++argv) {
if (strncmp(*argv, "d1=", 3) && /* skip those already set */
strncmp(*argv, "d2=", 3) &&
strncmp(*argv, "f1=", 3) &&
strncmp(*argv, "f2=", 3) &&
strncmp(*argv, "style=", 6)){
strcat(plotcmd, " "); /* put a space between args */
strcat(plotcmd, "\""); /* user quotes are stripped */
strcat(plotcmd, *argv); /* add the arg */
strcat(plotcmd, "\""); /* user quotes are stripped */
}
}
/* Open pipe to pswigb and send the traces */
plotfp = epopen(plotcmd, "w");
free(plotcmd);
if (!have_ntr || irregular) { /* send out stored traces one by one */
rewind(datafp);
{ register int itr;
for (itr = 0; itr < ntr; ++itr) {
efread (trbuf, FSIZE, nt, datafp);
efwrite(trbuf, FSIZE, nt, plotfp);
}
}
} else { /* just pump out traces and let pswigb do the work */
do {
efwrite(tr.data, FSIZE, nt, plotfp);
} while (gettr(&tr));
}
/* Clean up */
epclose(plotfp);
if (!have_ntr) {
efclose(datafp);
if (istmpdir) eremove(datafile);
}
if (irregular) {
efclose(x2fp);
if (istmpdir) eremove(x2file);
}
return EXIT_SUCCESS;
}
/* Initialize getpar */
static int getparinit (void)
{
static int targc; /* total number of args */
static char **targv; /* pointer to arg strings */
static char *pfname; /* name of parameter file */
FILE *pffd; /* file id of parameter file */
int pflen; /* length of parameter file in bytes */
static int pfargc; /* arg count from parameter file */
bool parfile; /* parfile existence flag */
int argstrlen;
char *argstr, *pargstr; /* storage for command line and
parameter file args */
int nread; /* bytes fread */
int i, j; /* counters */
char *getpfname(); /* return name of parameter file */
int white2null(); /* deliminate arg strings from parameter
file with (possibly multiple) NULLs
and return a count of the strings */
int tabulate(); /* install symbol table */
tabled = true; /* remember table is built */
/* Check if xargc was initiated */
if(!xargc)
err("%s: xargc=%d -- not initiated in main", __FILE__, xargc);
/* Space needed for command lines */
for (i = 1, argstrlen = 0; i < xargc; i++) {
argstrlen += strlen(xargv[i]) + 1;
}
/* Get parfile name if there is one */
/* parfile = (pfname = getpfname()) ? true : false; */
if (pfname = getpfname()) {
parfile = true;
} else {
parfile = false;
}
if (parfile) {
pffd = efopen(pfname, "r");
/* Get the length */
efseek(pffd, 0, SEEK_END);
pflen = eftell(pffd);
rewind(pffd);
argstrlen += pflen;
} else {
pflen = 0;
}
/* Allocate space for command line and parameter file
plus nulls at the ends to help with parsing. */
/* argstr = (char *) calloc((size_t) (1+argstrlen+1), 1); */
argstr = (char *) ealloc1(1+argstrlen+1, 1);
if (parfile) {
/* Read the parfile */
nread = efread(argstr + 1, 1, pflen, pffd);
if (nread != pflen) {
err("%s: fread only %d bytes out of %d from %s",
__FILE__, nread, pflen, pfname);
}
efclose(pffd);
/* Zap whites in parfile to help in parsing */
argstr[0] = '\0' ;
pfargc = white2null(argstr, pflen);
} else {
pfargc = 0;
}
/* Total arg count */
targc = pfargc + xargc - 1;
/* Allocate space for total arg pointers */
targv = (char **) ealloc1(targc, sizeof(char*));
if (parfile) {
/* Parse the parfile. Skip over multiple NULLs */
for (j = 1, i = 0; j < pflen; j++) {
if (argstr[j] && !argstr[j-1]) {
targv[i++] = argstr + j;
}
}
} else {
i = 0;
}
/* Copy command line arguments */
for (j = 1, pargstr = argstr + pflen + 2; j < xargc; j++) {
strcpy(pargstr,xargv[j]);
targv[i++] = pargstr;
pargstr += strlen(xargv[j]) + 1;
}
/* Allocate space for the pointer table */
argtbl = (ArgStruct*) ealloc1(targc, sizeof(ArgStruct));
/* Tabulate targv */
tabulate(targc, targv);
}
int main(int argc, char **argv) /*argc, argv - the arguments to the main() function*/
{
int nt; /*number of time samples*/
int nz; /*number of migrated depth samples*/
int nx; /*number of midpoints (traces)*/
int ix;
int iz;
float dt; /*time sampling interval*/
float dx; /*spatial sampling interval*/
float dz; /*migrated depth sampling interval*/
float **data; /*input seismic data*/
complex **image; /*migrated image*/
float **rimage; /*migrated image*/
float **v; /*velocity model*/
FILE *vfp;
char *vfile=""; /*name of velocity file*/
int verbose=1;
char *tmpdir; /* directory path for tmp files*/
cwp_Bool istmpdir=cwp_false; /* true for user-given path*/
/******************************* Intialize *********************************************/
initargs(argc,argv);
requestdoc(1);
/********************************* Get parameters **************************************/
/*get info from first trace*/
if (!gettr(&tr)) err("can't get first trace"); /*fgettr: get a fixed-length segy trace from a file by file pointer*/
nt = tr.ns; /*nt*/ /*gettr: macro using fgettr to get a trace from stdin*/
if (!getparfloat("dt", &dt)) { /*dt*/
if (tr.dt) {
dt = ((double) tr.dt)/1000000.0;
}
else {err("dt is not set");}
}
if (!getparfloat("dx", &dx)) { /*dx*/
if (tr.d2) {
dx = tr.d2;
}
else {
err("dx is not set");
}
}
/*get optional parameters*/
if (!getparint("nz",&nz)) err("nz must be specified");
if (!getparfloat("dz",&dz)) err("dz must be specified");
if (!getparstring("vfile", &vfile)) err("velocity file must be specified");
if (!getparint("verbose", &verbose)) verbose = 0;
/****************************************************************************************/
/* Look for user-supplied tmpdir */
if (!getparstring("tmpdir",&tmpdir) &&
!(tmpdir = getenv("CWP_TMPDIR"))) tmpdir="";
if (!STREQ(tmpdir, "") && access(tmpdir, WRITE_OK))
err("you can't write in %s (or it doesn't exist)", tmpdir);
checkpars();
/**************************** Count trace number nx ******************************/
/* store traces and headers in tempfiles while getting a count */
if (STREQ(tmpdir,"")) {
tracefp = etmpfile();
headerfp = etmpfile();
if (verbose) warn("using tmpfile() call");
}
else { /* user-supplied tmpdir */
char directory[BUFSIZ];
strcpy(directory, tmpdir);
strcpy(tracefile, temporary_filename(directory));
strcpy(headerfile, temporary_filename(directory));
/* Trap signals so can remove temp files */
signal(SIGINT, (void (*) (int)) closefiles);
signal(SIGQUIT, (void (*) (int)) closefiles);
signal(SIGHUP, (void (*) (int)) closefiles);
signal(SIGTERM, (void (*) (int)) closefiles);
tracefp = efopen(tracefile, "w+");
headerfp = efopen(headerfile, "w+");
istmpdir=cwp_true;
if (verbose) warn("putting temporary files in %s", directory);
}
nx = 0;
do {
++nx; /*get the number of traces nx*/
efwrite(&tr,HDRBYTES,1,headerfp);
efwrite(tr.data, FSIZE, nt, tracefp);
} while (gettr(&tr));
erewind(tracefp); /*Set position of stream to the beginning*/
erewind(headerfp);
/******************************************************************************************/
/*allocate memory*/
data = alloc2float(nt,nx); /*2D array nx by nt*/
image = alloc2complex(nz,nx); /*2D array nx by nz*/
rimage = alloc2float(nz,nx); /*2D array nx by nz*/
v= alloc2float(nz,nx); /*2D array, in Fortran the velocity model is nz by nx 2D array*/
/*in binary, it is actually 1D*/
/* load traces into the zero-offset array and close tmpfile */
efread(*data, FSIZE, nt*nx, tracefp); /*read traces to data*/
efclose(tracefp);
/*load velicoty file*/
vfp=efopen(vfile,"r");
efread(v[0],FSIZE,nz*nx,vfp); /*load velocity*/
efclose(vfp);
/***********************finish reading data*************************************************/
/* call pspi migration function*/
pspimig(data,image,v,nt,nx,nz,dt,dx,dz);
/*get real part of image*/
for (iz=0;iz<nz;iz++){
for (ix=0;ix<nx;ix++){
rimage[ix][iz] = image[ix][iz].r;
}
}
/* restore header fields and write output */
for (ix=0; ix<nx; ix++) {
efread(&tr,HDRBYTES,1,headerfp);
tr.ns = nz;
tr.d1 = dz;
memcpy( (void *) tr.data, (const void *) rimage[ix],nz*FSIZE);
puttr(&tr);
}
/* Clean up */
efclose(headerfp);
if (istmpdir) eremove(headerfile);
if (istmpdir) eremove(tracefile);
return(CWP_Exit());
}
int
main (int argc, char **argv)
{
int nt; /* number of time samples */
int nz; /* number of migrated depth samples */
int nx; /* number of horizontal samples */
int nxshot; /* number of shots to be migrated */
/*int nxshot_orig;*/ /* first value of nxshot */
int iz,iw,ix,it; /* loop counters */
int igx; /* integerized gx value */
int ntfft; /* fft size */
int nw,truenw; /* number of wave numbers */
int dip=79; /* dip angle */
float sx,gx; /* x source and geophone location */
float gxmin=0.0,gxmax=0.0; /* x source and geophone location */
float min_sx_gx; /* min(sx,gx) */
float oldgx; /* old gx position */
/* float oldgxmin; */ /* old gx position */
/* float oldgxmax; */ /* old gx position */
float oldsx=0.0; /* old sx position */
int isx=0,nxo; /* index for source and geophone */
int oldisx=0; /* old value of source index */
int oldigx=0; /* old value of integerized gx value */
int ix1,ix2,ix3,ixshot; /* dummy index */
int lpad,rpad; /* padding on both sides of the migrated section */
float *wl=NULL,*wtmp=NULL;
float fmax;
float f1,f2,f3,f4;
int nf1,nf2,nf3,nf4;
int ntw;
float dt=0.004,dz; /* time and depth sampling interval */
float dw; /* frequency sampling interval */
float fw; /* first frequency */
float w; /* frequency */
float dx; /* spatial sampling interval */
float **p=NULL; /* input data */
float **cresult=NULL; /* output result */
float v1; /* average velocity */
double kz2;
float **v=NULL,**vp=NULL;/* pointers for the velocity profile */
complex cshift2;
complex *wlsp=NULL; /* complex input,output */
complex **cp=NULL; /* ... */
complex **cp1=NULL; /* ... */
complex **cq=NULL; /* ... */
char *vfile=""; /* name of file containing velocities */
FILE *vfp=NULL;
int verbose; /* verbose flag */
/* hook up getpar to handle the parameters */
initargs(argc,argv);
requestdoc(1);
/* get required parameters */
MUSTGETPARINT("nz",&nz);
MUSTGETPARINT("nxo",&nxo);
MUSTGETPARFLOAT("dz",&dz);
MUSTGETPARSTRING("vfile",&vfile);
MUSTGETPARINT("nxshot",&nxshot);
/* get optional parameters */
if (!getparfloat("fmax",&fmax)) fmax = 25.0;
if (!getparfloat("f1",&f1)) f1 = 10.0;
if (!getparfloat("f2",&f2)) f2 = 20.0;
if (!getparfloat("f3",&f3)) f3 = 40.0;
if (!getparfloat("f4",&f4)) f4 = 50.0;
if (!getparint("lpad",&lpad)) lpad=9999;
if (!getparint("rpad",&rpad)) rpad=9999;
if (!getparint("dip",&dip)) dip=79;
if (!getparint("verbose",&verbose)) verbose = 0;
/* allocating space */
cresult = alloc2float(nz,nxo);
vp = alloc2float(nxo,nz);
/* load velicoty file */
vfp=efopen(vfile,"r");
efread(vp[0],FSIZE,nz*nxo,vfp);
efclose(vfp);
/* zero out cresult array */
memset((void *) cresult[0], 0, nxo*nz*FSIZE);
/* save value of nxshot */
/* nxshot_orig=nxshot; */
/* get info from first trace */
if (!gettr(&tr)) err("can't get first trace");
nt = tr.ns;
get_sx_gx(&sx,&gx);
min_sx_gx = MIN(sx,gx);
sx = sx - min_sx_gx;
gx = gx - min_sx_gx;
/* let user give dt and/or dx from command line */
if (!getparfloat("dt", &dt)) {
if (tr.dt) { /* is dt field set? */
dt = ((double) tr.dt)/1000000.0;
} else { /* dt not set, assume 4 ms */
dt = 0.004;
if(verbose) warn("tr.dt not set, assuming dt=0.004");
}
}
if (!getparfloat("dx",&dx)) {
if (tr.d2) { /* is d2 field set? */
dx = tr.d2;
} else {
dx = 1.0;
if(verbose) warn("tr.d2 not set, assuming d2=1.0");
}
}
checkpars();
oldisx=0;
do { /* begin loop over shots */
/* determine frequency sampling interval*/
ntfft = npfar(nt);
nw = ntfft/2+1;
dw = 2.0*PI/(ntfft*dt);
/* compute the index of the frequency to be migrated*/
fw=2.0*PI*f1;
nf1=fw/dw+0.5;
fw=2.0*PI*f2;
nf2=fw/dw+0.5;
fw=2.0*PI*f3;
nf3=fw/dw+0.5;
fw=2.0*PI*f4;
nf4=fw/dw+0.5;
/* the number of frequencies to migrated*/
truenw=nf4-nf1+1;
fw=0.0+nf1*dw;
if(verbose)
warn("nf1=%d nf2=%d nf3=%d nf4=%d nw=%d",nf1,nf2,nf3,nf4,truenw);
/* allocate space */
wl=alloc1float(ntfft);
wlsp=alloc1complex(nw);
/* generate the Ricker wavelet */
wtmp=ricker(fmax,dt,&ntw);
/* zero out wl[] array */
memset((void *) wl, 0, ntfft*FSIZE);
/* CHANGE BY CHRIS STOLK, Dec. 11, 2005 */
/* The next two lines are the old code, */
/* it is erroneous because the peak of */
/* the wavelet occurs at positive time */
/* instead of time zero. */
/*
for(it=0;it<ntw;it++)
wl[it]=wtmp[it];
*/
/* New code: we put in the wavelet in a centered fashion */
for(it=0;it<ntw;it++)
wl[(it-ntw/2+ntfft) % ntfft]=wtmp[it];
/* End of new code */
free1float(wtmp);
/* fourier transform wl array */
pfarc(-1,ntfft,wl,wlsp);
/* allocate space */
p = alloc2float(ntfft,nxo);
cq = alloc2complex(nw,nxo);
/* zero out p[][] array */
memset((void *) p[0], 0, ntfft*nxo*FSIZE);
/* initialize a number of items before looping over traces */
nx = 0;
igx=0;
oldigx=0;
oldsx=sx;
oldgx=gx;
/* oldgxmax=gxmax; */
/* oldgxmin=gxmin; */
do { /* begin looping over traces within a shot gather */
memcpy( (void *) p[igx], (const void *) tr.data,nt*FSIZE);
/* get sx and gx */
get_sx_gx(&sx,&gx);
sx = (sx - min_sx_gx);
gx = (gx - min_sx_gx);
igx = NINT(gx/dx);
if (igx==oldigx)
warn("repeated igx!!! check dx or scalco value!!!");
oldigx = igx;
if(gxmin>gx)gxmin=gx;
if(gxmax<gx)gxmax=gx;
if(verbose)
warn(" inside loop: min_sx_gx %f isx %d igx %d gx %f sx %f",min_sx_gx,isx,igx,gx,sx);
/* sx, gx must increase monotonically */
if (!(oldsx <= sx) )
err("sx field must be monotonically increasing!");
if (!(oldgx <= gx) )
err("gx field must be monotonically increasing!");
++nx;
} while(gettr(&tr) && sx==oldsx);
isx=NINT(oldsx/dx);
ixshot=isx;
if (isx==oldisx)
warn("repeated isx!!! check dx or scalco value!!!");
oldisx=isx;
if(verbose) {
warn("sx %f, gx %f , gxmin %f gxmax %f nx %d",sx,gx,gxmin,gxmax, nx);
warn("isx %d igx %d ixshot %d" ,isx,igx,ixshot);
}
/* transform the shot gather from time to frequency domain */
pfa2rc(1,1,ntfft,nxo,p[0],cq[0]);
/* compute the most left and right index for the migrated */
/* section */
ix1=NINT(oldsx/dx);
ix2=NINT(gxmin/dx);
ix3=NINT(gxmax/dx);
if(ix1>=ix3)ix3=ix1;
if(ix1<=ix2)ix2=ix1;
ix2-=lpad;
ix3+=rpad;
if(ix2<0)ix2=0;
if(ix3>nxo-1)ix3=nxo-1;
/* the total traces to be migrated */
nx=ix3-ix2+1;
nw=truenw;
/* allocate space for velocity profile within the aperature */
v=alloc2float(nx,nz);
for(iz=0;iz<nz;iz++)
for(ix=0;ix<nx;ix++)
v[iz][ix]=vp[iz][ix+ix2];
/* allocate space */
cp = alloc2complex(nx,nw);
cp1 = alloc2complex(nx,nw);
/* transpose the frequency domain data from */
/* data[ix][iw] to data[iw][ix] and apply a */
/* Hamming at the same time */
for (ix=0; ix<nx; ++ix) {
for (iw=0; iw<nw; iw++){
float tmpp=0.0,tmppp=0.0;
if(iw>=(nf1-nf1)&&iw<=(nf2-nf1)){
tmpp=PI/(nf2-nf1);
tmppp=tmpp*(iw-nf1)-PI;
tmpp=0.54+0.46*cos(tmppp);
cp[iw][ix]=crmul(cq[ix+ix2][iw+nf1],tmpp);
} else {
if(iw>=(nf3-nf1)&&iw<=(nf4-nf1)) {
tmpp=PI/(nf4-nf3);
tmppp=tmpp*(iw-nf3);
tmpp=0.54+0.46*cos(tmppp);
cp[iw][ix]=crmul(cq[ix+ix2][iw+nf1],tmpp);
} else {
cp[iw][ix]=cq[ix+ix2][iw+nf1];
}
}
cp1[iw][ix]=cmplx(0.0,0.0);
}
}
for(iw=0;iw<nw;iw++){
cp1[iw][ixshot-ix2]=wlsp[iw+nf1];
}
if(verbose) {
warn("ixshot %d ix %d ix1 %d ix2 %d ix3 %d",ixshot,ix,ix1,ix2,ix3);
warn("oldsx %f ",oldsx);
}
free2float(p);
free2complex(cq);
free1float(wl);
free1complex(wlsp);
/* loops over depth */
for(iz=0; iz<nz; ++iz) {
/* the imaging condition */
for(ix=0; ix<nx; ++ix){
for(iw=0,w=fw;iw<nw;w+=dw,iw++){
complex tmp;
float ratio=10.0;
if(fabs(ix+ix2-ixshot)*dx<ratio*iz*dz)
tmp=cmul(cp[iw][ix],cp1[iw][ix]);
else
tmp=cmplx(0.0,0.0);
cresult[ix+ix2][iz]+=tmp.r/ntfft;
}
}
/* get the average velocity */
v1=0.0;
for(ix=0;ix<nx;++ix)
v1+=v[iz][ix]/nx;
/* compute time-invariant wavefield */
for(ix=0;ix<nx;++ix) {
for(iw=0,w=fw;iw<nw;w+=dw,++iw) {
kz2=-(1.0/v1)*w*dz;
cshift2=cmplx(cos(kz2),sin(kz2));
cp[iw][ix]=cmul(cp[iw][ix],cshift2);
cp1[iw][ix]=cmul(cp1[iw][ix],cshift2);
}
}
/* wave-propagation using finite-difference method */
fdmig(cp, nx, nw,v[iz],fw,dw,dz,dx,dt,dip);
fdmig(cp1,nx, nw,v[iz],fw,dw,dz,dx,dt,dip);
/* apply thin lens term here */
for(ix=0;ix<nx;++ix) {
for(iw=0,w=fw;iw<nw;w+=dw,++iw){
kz2=-(1.0/v[iz][ix]-1.0/v1)*w*dz;
cshift2=cmplx(cos(kz2),sin(kz2));
cp[iw][ix]=cmul(cp[iw][ix],cshift2);
cp1[iw][ix]=cmul(cp1[iw][ix],cshift2);
}
}
}
free2complex(cp);
free2complex(cp1);
free2float(v);
--nxshot;
} while(nxshot);
/* restore header fields and write output */
for(ix=0; ix<nxo; ix++){
tr.ns = nz;
tr.d1 = dz;
tr.d2 = dx;
tr.offset = 0;
tr.cdp = tr.tracl = ix;
memcpy( (void *) tr.data, (const void *) cresult[ix],nz*FSIZE);
puttr(&tr);
}
return(CWP_Exit());
}
