int
main(int argc, char **argv)
{
/* Initialize */
initargs(argc, argv);
requestdoc(1);
while (gettr(&tr)) {
tr.f1 = 0.0;
tr.d1 = 0.0;
tr.f2 = 0.0;
tr.d2 = 0.0;
tr.ungpow = 0.0;
tr.unscale = 0.0;
tr.ntr = 0;
tr.mark = 0;
puttr(&tr);
}
return(CWP_Exit());
}
int
main(int argc, char **argv)
{
int ns; /* samples on output traces */
/* Initialize */
initargs(argc, argv);
requestdoc(1);
/* Get info from first trace */
if (!fvgettr(stdin, &tr)) err("can't get first trace");
if (!getparint("ns", &ns)) ns = tr.ns;
checkpars();
/* Loop over the traces */
do {
int nt = tr.ns;
if (nt < ns) /* pad with zeros */
memset((void *)(tr.data + nt), 0, (ns-nt)*FSIZE);
tr.ns = ns;
puttr(&tr);
} while (fvgettr(stdin, &tr));
return(CWP_Exit());
}
int
main(int argc, char **argv)
{
/* Segy data constans */
int ntr=0; /* number of traces */
char *outpar=NULL; /* name of file holding output */
FILE *outparfp=stdout; /* ... its file pointer */
initargs(argc, argv);
requestdoc(1);
/* Get information from the first header */
if (!gettr(&tr)) err("can't get first trace");
if (!getparstring("outpar", &outpar)) outpar = "/dev/stdout" ;
outparfp = efopen(outpar, "w");
checkpars();
/* Loop over traces getting a count */
do {
++ntr;
} while(gettr(&tr));
fprintf(outparfp, "%d", ntr);
return(CWP_Exit());
}
int
main(int argc, char **argv)
{
FILE *fp;
int fd,j=0,verbose;
initargs(argc,argv);
requestdoc(1);
if(!getparint("fd",&fd)) fd=-1;
if(!getparint("verbose",&verbose)) verbose=0;
warn("File descriptor passed to suget = %d",fd);
if( (fp = (FILE *) fdopen(fd,"r"))==NULL) err("Bad file descriptor");
warn("About to read first trace");
if(!fgettr(fp,&tr)) err("Can't get first trace");
do{
if(verbose>0){
warn("read trace %d",j);
j++;
}
puttr(&tr);
} while(fgettr(fp,&tr));
return(CWP_Exit());
}
int
main(int argc, char **argv)
{
cwp_String key1, key2; /* x and y key header words */
Value val1, val2; /* ... their values */
cwp_String type1, type2;/* ... their types */
int index1, index2; /* ... their indices in hdr.h */
float x, y; /* temps to hold current x & y */
cwp_String outpar; /* name of par file */
register int npairs; /* number of pairs found */
/* Hook up getpars */
initargs(argc, argv);
requestdoc(1);
/* Prevent byte codes from spilling to screen */
if (isatty(STDOUT)) err("must redirect or pipe binary output");
/* Get parameters */
if (!getparstring("key1", &key1)) key1 = "sx";
if (!getparstring("key2", &key2)) key2 = "gx";
type1 = hdtype(key1);
type2 = hdtype(key2);
index1 = getindex(key1);
index2 = getindex(key2);
/* Loop over traces */
npairs = 0;
while(gettr(&tr)) {
gethval(&tr, index1, &val1);
gethval(&tr, index2, &val2);
x = vtof(type1, val1);
y = vtof(type2, val2);
efwrite(&x, FSIZE, 1, stdout);
efwrite(&y, FSIZE, 1, stdout);
++npairs;
}
/* Make parfile if needed */
if (getparstring("outpar", &outpar))
fprintf(efopen(outpar, "w"),
"n=%d label1=%s label2=%s\n",
npairs, key1, key2);
return(CWP_Exit());
}
int
main(int argc, char **argv)
{
float fz[BUFSIZ];
int iz=0,jz,nz=0;
unsigned int z[BUFSIZ];
char line[BUFSIZ],*lp, *outpar;
FILE *infp=stdin,*outfp=stdout, *outparfp;
unsigned int *uz = &(z[0]);
/* Hook up getpar */
initargs(argc, argv);
requestdoc(1);
/* Prevent floats from dumping on screen */
switch(filestat(STDOUT)) {
case BADFILETYPE:
warn("stdout is illegal filetype");
pagedoc();
break;
case TTY:
warn("stdout can't be tty");
pagedoc();
break;
default: /* rest are OK */
break;
}
/* Get parameters and do set up */
if (!getparstring("outpar", &outpar)) outpar = "/dev/tty" ;
outparfp = efopen(outpar, "w");
while (fgets(line,BUFSIZ,infp)!=NULL) {
/* set pointer to beginning of line */
lp = line;
/* read hex digits from input line */
for(iz=0;sscanf(lp,"%2x",&uz[iz])==1;iz++,nz++,lp+=2);
/* convert to floats */
for(jz=0;jz<iz;jz++)
fz[jz] = 255-z[jz];
/* write floats */
fwrite(fz,sizeof(float),iz,outfp);
}
/* Make par file */
fprintf(outparfp, "total number of values=%d\n",nz);
return(CWP_Exit());
}
int
main(int argc, char **argv)
{
int nt; /* number of samples on input */
int ntout; /* number of samples on output */
int it; /* counter */
int istart; /* beginning sample */
int izero; /* - istart */
int norm; /* user defined normalization value */
int sym; /* symmetric plot? */
float scale; /* scale factor computed from norm */
float *temp=NULL; /* temporary array */
float dt; /* time sampling interval (sec) */
/* 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 = tr.dt/1000000.0;
/* get parameters */
if (!getparint("ntout",&ntout)) ntout=101;
if (!getparint("norm",&norm)) norm = 1;
if (!getparint("sym",&sym)) sym = 1;
checkpars();
/* allocate workspace */
temp = ealloc1float(ntout);
/* index of first sample */
if (sym == 0) istart = 0;
else istart = -(ntout-1)/2;
/* index of sample at time zero */
izero = -istart;
/* loop over traces */
do {
xcor(nt,0,tr.data,nt,0,tr.data,ntout,istart,temp);
if (norm) {
scale = 1.0/(temp[izero]==0.0?1.0:temp[izero]);
for (it=0; it<ntout; ++it) temp[it] *= scale;
}
memcpy((void *) tr.data, (const void *) temp, ntout*FSIZE);
tr.ns = ntout;
tr.f1 = -dt*ntout/2.0;
tr.delrt = 0;
puttr(&tr);
} while(gettr(&tr));
return(CWP_Exit());
}
int
main(int argc, char **argv)
{
int i; /* counter */
int itr=0; /* trace counter */
int verbose; /* =0 silent, =1 chatty */
int interp; /* =1 interpolate to get NaN */
/* and Inf replacement values */
float value; /* value to set NaN and Infs to */
/* Initialize */
initargs(argc,argv);
requestdoc(1);
/* Get info from first trace */
if(!gettr(&tr) ) err("Can't get first trace \n");
/* Get parameters */
if(!getparint("verbose",&verbose)) verbose = 1;
if(!getparint("interp",&interp)) interp = 0;
if(!getparfloat("value",&value)) value = 0.0;
checkpars();
/* Loop over traces */
do{
++itr;
for(i=0; i<tr.ns; ++i){
if(!isfinite(tr.data[i])) {
if (verbose)
warn("found NaN trace = %d sample = %d", itr, i);
if (interp) { /* interpolate nearest neighbors */
/* for NaN replacement value */
if (i==0 && isfinite(tr.data[i+1])) {
tr.data[i]=tr.data[i+1];
} else if(i==tr.ns-1 && isfinite(tr.data[i-2])) {
tr.data[i]= tr.data[i-2];
} else if( isfinite(tr.data[i-1]) &&
isfinite(tr.data[i+1]) ) {
tr.data[i]=(tr.data[i-1]+tr.data[i+1])/2.0;
}
}
/* use user defined NaNs replacement value */
tr.data[i] = value;
}
}
puttr(&tr);
} while(gettr(&tr));
return(CWP_Exit());
}
int
main(int argc, char **argv)
{
int itmin; /* smallest sample (zero-based) to plot */
int itmax; /* largest sample (zero-based) to plot */
int nt; /* number of samples */
int count; /* number of traces to plot */
register int itr; /* trace counter */
cwp_Bool plotall; /* plot all the traces */
/* Initialize */
initargs(argc, argv);
requestdoc(1);
/* Set number of traces to plot */
plotall = cwp_false;
if (!getparint("count", &count)) plotall = cwp_true;
/* Loop over traces */
for (itr = 0; (plotall || itr < count) && gettr(&tr); itr++) {
nt = (int) tr.ns; /* Cast from unsigned */
if (itr == 0) { /* Awkward to do a gettr outside loop */
if (!getparint("itmin", &itmin)) itmin = 0;
if (!getparint("itmax", &itmax)) itmax = nt - 1;
if (itmin >= nt - 1 || itmin < 0) {
err("itmin=%d, require 0 < itmin < %d",
itmin, nt - 1);
}
if (itmax >= nt) {
itmax = nt - 1;
}
if (itmax < 0) {
err("itmax=%d, require itmax > 0", itmax);
}
if (itmin > itmax) {
itmin = itmax;
}
}
printheader(&tr);
tabplot(&tr, itmin, itmax);
}
return(CWP_Exit());
}
int
main(int argc, char **argv)
{
int nt; /* number of time samples */
int ntr; /* number of traces */
int itr; /* trace counter */
int nspk; /* number of spikes */
int it1; /* time of 1st spike */
int ix1; /* position of 1st spike */
int it2; /* time of 2nd spike */
int ix2; /* position of 2nd spike */
int ix3; /* position of 3rd spike */
int it3; /* time of 3rd spike */
int ix4; /* position of 4th spike */
int it4; /* time of 4th spike */
float dt; /* time sampling interval */
float offset; /* offset */
/* Initialize */
initargs(argc, argv);
requestdoc(0); /* stdin not used */
nt = 64; getparint("nt", &nt);
CHECK_NT("nt",nt); tr.ns = nt;
ntr = 32; getparint("ntr", &ntr);
dt = 0.004; getparfloat("dt", &dt); tr.dt = dt*1000000;
offset = 400; getparfloat("offset", &offset); tr.offset = offset;
nspk = 4; getparint("nspk", &nspk);
ix1 = ntr/4; getparint("ix1", &ix1);
it1 = nt/4; getparint("it1", &it1);
ix2 = ntr/4; getparint("ix2", &ix2);
it2 = 3*nt/4; getparint("it2", &it2);
ix3 = 3*ntr/4; getparint("ix3", &ix3);
it3 = nt/4; getparint("it3", &it3);
ix4 = 3*ntr/4; getparint("ix4", &ix4);
it4 = 3*nt/4; getparint("it4", &it4);
for (itr = 0; itr < ntr; itr++) {
memset( (void *) tr.data, 0, nt * FSIZE);
if (itr == ix1-1) tr.data[it1-1] = 1.0;
if (nspk > 1 && itr == ix2-1) tr.data[it2-1] = 1.0;
if (nspk > 2 && itr == ix3-1) tr.data[it3-1] = 1.0;
if (nspk > 3 && itr == ix4-1) tr.data[it4-1] = 1.0;
tr.tracl = itr + 1;
puttr(&tr);
}
return(CWP_Exit());
}
int
main(int argc, char **argv)
{
double sx, sy, gx, gy, factor;
float mx, my;
short unit;
int degree;
cwp_String outpar;
register int npairs;
/* Initialize */
initargs(argc, argv);
requestdoc(1);
if (!getparint("degree", °ree)) degree=0;
npairs = 0;
while (gettr(&tr)) {
sx = tr.sx;
sy = tr.sy;
gx = tr.gx;
gy = tr.gy;
unit = tr.counit;
/* If tr.scalco not set, use 1 as the value */
factor = (!tr.scalco) ? 1 : tr.scalco;
/* factor < 0 means divide; factor > 0 means to multiply */
if (factor < 0) factor = -1/factor;
/* if necessary, convert from seconds to degrees */
if (unit == 2 && degree == 1) factor /= 3600;
mx = (float) (0.5*(sx + gx) * factor);
my = (float) (0.5*(sy + gy) * factor);
efwrite(&mx, FSIZE, 1, stdout);
efwrite(&my, FSIZE, 1, stdout);
++npairs;
}
/* Make parfile if needed */
if (getparstring("outpar", &outpar))
fprintf(efopen(outpar, "w"), "n=%d\n", npairs);
return(CWP_Exit());
}
int
main(int argc, char **argv)
{
int nt,nshot,noff;
int ishot,ioff,it;
float dt,dshot,doff,sx,gx,offset,cmp;
/* Initialize */
initargs(argc, argv);
requestdoc(0); /* stdin not used */
nt = 100; getparint("nt", &nt);
CHECK_NT("nt",nt); tr.ns = nt;
nshot = 10; getparint("nshot", &nshot);
noff = 24; getparint("noff", &noff);
dt = 0.004; getparfloat("dt", &dt); tr.dt = dt*1000000;
dshot = 10; getparfloat("dshot", &dshot);
doff = 20; getparfloat("doff", &doff);
for (ishot = 0; ishot < nshot; ishot++) {
sx = ishot*dshot;
for (ioff = 0; ioff < noff; ioff++) {
offset = (ioff+1)*doff;
gx = sx + offset;
cmp = (sx + gx)/2.;
memset( (void *) tr.data, 0, nt * FSIZE);
for (it = 0; it < nt/4; it++) {
tr.data[it] = sx;
}
for (it = nt/4; it < nt/2; it++) {
tr.data[it] = gx;
}
for (it = nt/2; it < 3*nt/4; it++) {
tr.data[it] = offset;
}
for (it = 3*nt/4; it < nt; it++) {
tr.data[it] = cmp;
}
tr.sx = sx;
tr.gx = gx;
tr.offset = offset;
tr.cdp = cmp;
tr.tracl = ishot*nshot + ioff + 1;
puttr(&tr);
}
}
return(CWP_Exit());
}
int
main(int argc, char **argv)
{
char *outpar; /* name of file holding output parfile */
FILE *outparfp; /* ... its file pointer */
int n1; /* number of floats per line */
size_t n1read; /* number of items read */
size_t n2 = 0; /* number of lines in input file */
float *z; /* binary floats */
/* Hook up getpar */
initargs(argc, argv);
requestdoc(1);
/* Get parameters and do set up */
if (!getparstring("outpar", &outpar)) outpar = "/dev/tty" ;
outparfp = efopen(outpar, "w");
MUSTGETPARINT("n1",&n1);
z = ealloc1float(n1);
/* Loop over data converting to ascii */
while ((n1read = efread(z, FSIZE, n1, stdin))) {
register int i1;
if (n1read != n1)
err("out of data in forming line #%d", n2+1);
for (i1 = 0; i1 < n1; ++i1)
/* z2xyz.c:70: warning: format ‘%d’ expects type ‘int’, but argument 2 has type ‘size_t’ */
/* printf("%d %d %11.4e \n",n2,i1,z[i1]); */
#if __WORDSIZE == 64
printf("%lu %d %11.4e \n",n2,i1,z[i1]);
#else
printf("%u %d %11.4e \n",n2,i1,z[i1]);
#endif
++n2;
}
/* Make par file */
/* z2xyz.c:76: warning: format ‘%d’ expects type ‘int’, but argument 3 has type ‘size_t’ */
/* fprintf(outparfp, "n2=%d\n", n2); */
#if __WORDSIZE == 64
fprintf(outparfp, "n2=%lu\n", n2);
#else
fprintf(outparfp, "n2=%u\n", n2);
#endif
return(CWP_Exit());
}
int
main (int argc, char **argv)
{
int n1,n2,i2;
float f1,f2,d1,d2,*x;
char *label2="Trace",label[256];
FILE *infp=stdin,*outfp=stdout;
/* hook up getpar to handle the parameters */
initargs(argc,argv);
requestdoc(0);
/* get optional parameters */
if (!getparint("n1",&n1)) {
if (efseeko(infp,(off_t) 0,SEEK_END)==-1)
err("input file size is unknown; specify n1!\n");
if ((n1=((int) (eftello(infp)/((off_t) sizeof(float)))))<=0)
err("input file size is unknown; specify n1!\n");
efseeko(infp,(off_t) 0,SEEK_SET);
}
if (!getparfloat("d1",&d1)) d1 = 1.0;
if (!getparfloat("f1",&f1)) f1 = d1;
if (!getparint("n2",&n2)) n2 = -1;
if (!getparfloat("d2",&d2)) d2 = 1.0;
if (!getparfloat("f2",&f2)) f2 = d2;
getparstring("label2",&label2);
/* allocate space */
x = ealloc1float(n1);
/* loop over 2nd dimension */
for (i2=0; i2<n2 || n2<0; i2++) {
/* read input array, watching for end of file */
if (efread(x,sizeof(float),n1,infp)!=n1) break;
/* make plot label */
sprintf(label,"%s %0.4g",label2,f2+i2*d2);
/* plot the array */
prp1d(outfp,label,n1,d1,f1,x);
}
return(CWP_Exit());
}
int
main(int argc, char **argv)
{
int j,nt,flag,ntout;
float *buf,*ttn,dt,dtout=0.0,tmin,tmax;
/* Initialize */
initargs(argc, argv);
requestdoc(1);
/* Get information from the first header */
if (!gettr(&tr)) err("can't get first trace");
nt = tr.ns;
dt = (float) tr.dt/1000000.0;
if (!getparfloat("tmin", &tmin)) tmin=0.1*nt*dt;
if (!getparint("flag", &flag)) flag=1;
if(flag==1) {
dtout=tmin*2.*dt;
tmax=nt*dt;
ntout=1+tmax*tmax/dtout; CHECK_NT("ntout",ntout);
ttn=ealloc1float(ntout);
for(j=0;j<ntout;j++) ttn[j]=sqrt(j*dtout);
}else{
if (!getparfloat("dt", &dt)) dtout=0.004;
ntout=1+sqrt(nt*dt)/dtout; CHECK_NT("ntout",ntout);
ttn=ealloc1float(ntout);
for(j=0;j<ntout;j++) ttn[j]=j*j*dtout*dtout;
}
buf = ealloc1float(nt);
fprintf(stderr,"sutsq: ntin=%d dtin=%f ntout=%d dtout=%f\n",
nt,dt,ntout,dtout);
/* Main loop over traces */
do {
for(j=0;j<nt;j++) buf[j]=tr.data[j];
tr.ns = ntout;
tr.dt = dtout*1000000.;
ints8r(nt,dt,0.,buf,0.0,0.0,
ntout,ttn,tr.data);
puttr(&tr);
} while (gettr(&tr));
return(CWP_Exit());
}
int
main(int argc, char **argv)
{
int itmin; /* first sample to zero out */
int itmax; /* last sample to zero out */
float value; /* value to set within window */
int nt; /* time samples per trace in input data */
/* Initialize */
initargs(argc, argv);
requestdoc(1);
/* Get information from first trace */
if (!gettr(&tr)) err("can't get first trace");
nt = tr.ns;
/* Get params from user */
MUSTGETPARINT("itmax", &itmax);
if (!getparint("itmin", &itmin)) itmin = 0;
if (!getparfloat("value", &value)) value = 0.0;
/* Error checking */
if (itmax > nt) err("itmax = %d, must be < nt", itmax);
if (itmin < 0) err("itmin = %d, must not be negative", itmin);
if (itmax < itmin) err("itmax < itmin, not allowed");
/* Main loop over traces */
do {
register int i;
for (i = itmin; i <= itmax; ++i) tr.data[i] = value;
puttr(&tr);
} while(gettr(&tr));
return(CWP_Exit());
}
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 *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)
{
int nt; /* number of samples on output trace */
float dt; /* sample rate on outpu trace */
int min; /* min time shift (samples) */
int max; /* max time shift (samples) */
unsigned int seed; /* random number seed */
int it; /* time sample counter */
int itr; /* trace counter */
int its=0; /* local shift in time samples */
int sits; /* sign of local shift */
int fldr; /* fldr use flag */
int ishot; /* shot counter (based on tr.fldr) */
int ishotold;
int pon; /* flag for pos or neg shift */
/* Hook up getpar */
initargs(argc, argv);
requestdoc(1);
/* Get information from first trace */
if (!gettr(&tr)) err("can't get first trace");
nt = tr.ns;
ishotold = tr.fldr;
dt = ((double) tr.dt)/1000000.0;
/* Get parameters */
if (!getparint("min", &min)) min = 1;
if (!getparint("max", &max)) max = 1;
if (!getparint("pon", &pon)) pon = 1;
if (!getparint("fldr", &fldr)) fldr = 0;
if (min>max) err("min>max... exit");
/* Set seed */
if (!getparuint("seed", &seed)) { /* if not supplied, use clock */
if (-1 == (seed = (unsigned int) time((time_t *) NULL))) {
err("time() failed to set seed");
}
}
sranuni(seed);
/* Loop on traces */
itr = 1;
do {
/* get fldr (shot) number */
ishot = tr.fldr;
if (itr==1) {
/* initial shift for shot 1
(used if fldr==1) */
its = min + (max-min)*franuni();
if (pon==1) {
/* include random sign to shift */
sits = SGN(franuni()-0.5);
its = its * sits;
}
}
if (fldr==0) {
/* each trace gets random shift */
its = min + (max-min)*franuni();
if (pon==1) {
/* include random sign to shift */
sits = SGN(franuni()-0.5);
its = its * sits;
}
}
if (fldr==1 && ishot!=ishotold) {
/* new shot needs new shift */
its = min + (max-min)*franuni();
if (pon==1) {
/* include random sign to shift */
sits = SGN(franuni()-0.5);
its = its * sits;
}
ishotold = ishot;
}
/* apply shift and output trace */
if (its <= 0 ) {
/* loop over output times */
for (it=0; it<nt-its; ++it) {
tr.data[it] = tr.data[it-its];
}
} else {
/* loop over output times */
for (it=nt; it>its; --it) {
tr.data[it] = tr.data[it-its];
}
}
puttr(&tr);
itr += 1;
} while (gettr(&tr));
return(CWP_Exit());
}
int
main(int argc, char **argv)
{
int nx,nz;
float fx,fz,dx,dz,xs,zs,ex,ez,**v,**t,**a,**sg,**bet;
FILE *vfp=stdin,*tfp=stdout,*afp,*sfp,*bfp;
char *bfile="", *sfile="", *afile="";
/* hook up getpar to handle the parameters */
initargs(argc,argv);
requestdoc(0);
/* get required parameters */
if (!getparint("nx",&nx)) err("must specify nx!\n");
if (!getparint("nz",&nz)) err("must specify nz!\n");
if (!getparfloat("xs",&xs)) err("must specify xs!\n");
if (!getparfloat("zs",&zs)) err("must specify zs!\n");
/* get optional parameters */
if (!getparfloat("dx",&dx)) dx = 1.0;
if (!getparfloat("fx",&fx)) fx = 0.0;
if (!getparfloat("dz",&dz)) dz = 1.0;
if (!getparfloat("fz",&fz)) fz = 0.0;
if (!getparstring("sfile",&sfile)) sfile = "sfile";
if (!getparstring("bfile",&bfile)) bfile = "bfile";
if (!getparstring("afile",&afile)) afile = "afile";
checkpars();
if ((sfp=fopen(sfile,"w"))==NULL)
err("cannot open sfile=%s",sfile);
if ((bfp=fopen(bfile,"w"))==NULL)
err("cannot open bfile=%s",bfile);
if ((afp=fopen(afile,"w"))==NULL)
err("cannot open afile=%s",afile);
/* ensure source is in grid */
ex = fx+(nx-1)*dx;
ez = fz+(nz-1)*dz;
if (fx>xs || ex<xs || fz>zs || ez<zs)
err("source lies outside of specified (x,z) grid\n");
/* allocate space */
v = alloc2float(nz,nx);
t = alloc2float(nz,nx);
sg = alloc2float(nz,nx);
a = alloc2float(nz,nx);
bet = alloc2float(nz,nx);
/* read velocities */
fread(v[0],sizeof(float),nx*nz,vfp);
/* compute times, angles, sigma, and betas */
eiktam(xs,zs,nz,dz,fz,nx,dx,fx,v,t,a,sg,bet);
/* write first-arrival times */
fwrite(t[0],sizeof(float),nx*nz,tfp);
/* write sigma */
fwrite(sg[0],sizeof(float),nx*nz,sfp);
/* write angle */
fwrite(a[0],sizeof(float),nx*nz,afp);
/* write beta */
fwrite(bet[0],sizeof(float),nx*nz,bfp);
/* close files */
fclose(sfp);
fclose(afp);
fclose(bfp);
/* free space */
free2float(v);
free2float(t);
free2float(a);
free2float(sg);
free2float(bet);
return(CWP_Exit());
}
int
main(int argc, char **argv) {
cwp_String op="mult"; /* operation: add, sub, ..., */
int iop=MULT; /* integer abbrev. for op in switch */
int nt; /* number of samples on input trace */
float a;
int copy, j, tracl;
/* Initialize */
initargs(argc, argv);
requestdoc(1);
/* Get information from first trace */
if (!gettr(&tr)) err("can't get first trace");
nt = tr.ns;
tracl = tr.tracl;
/* Get operation, recall iop initialized to the default FABS */
getparstring("op", &op);
if (STREQ(op, "add")) iop = ADD;
else if (STREQ(op, "sub")) iop = SUB;
else if (STREQ(op, "div")) iop = DIV;
else if (STREQ(op, "pow")) iop = POW;
else if (STREQ(op, "spow")) iop = SPOW;
else if (!STREQ(op, "mult"))
err("unknown operation=\"%s\", see self-doc", op);
if (!getparfloat("a", &a)) a = 1;
if (!getparint("copy", ©)) copy = 1;
if (copy > 1) tracl = 1;
/* Main loop over traces */
do {
switch(iop) { register int i;
case ADD:
for (i = 0; i < nt; ++i)
tr.data[i] += a;
break;
case SUB:
for (i = 0; i < nt; ++i)
tr.data[i] -= a;
break;
case MULT:
for (i = 0; i < nt; ++i)
tr.data[i] *= a;
break;
case DIV:
for (i = 0; i < nt; ++i)
tr.data[i] /= a;
break;
case POW:
for (i = 0; i < nt; ++i)
tr.data[i] = pow(tr.data[i],a);
break;
case SPOW:
for (i = 0; i < nt; ++i)
tr.data[i] = SGN(tr.data[i])*pow(ABS(tr.data[i]),a);
break;
default: /* defensive programming */
err("mysterious operation=\"%s\"", op);
} /* end scope of i */
if (copy == 1) {
puttr(&tr);
} else {
for (j = 1; j <= copy; ++j) {
tr.tracl = tracl;
puttr(&tr);
++tracl;
}
}
} while (gettr(&tr));
return(CWP_Exit());
}
int
main(int argc, char **argv)
{
register float *rt; /* real trace */
register float *mt; /* magnitude trace */
register float *ct; /* resampled centroid trace */
int nt; /* number of points on input trace */
int verbose; /* flag to get advisory messages */
float dt; /* sampling interval in secs */
float invdt; /* inverse dt */
float hdt; /* half dt */
cwp_Bool inflect=cwp_false; /* inflection point flag */
cwp_Bool zero_cross=cwp_false; /* zero-crossing flag */
cwp_Bool max_passed=cwp_false; /* maximum value passed flag */
float *time; /* array of trace sample time values */
float sum_amp; /* sum of amplitudes in lobe */
float t_cen; /* centroid about amplitude axis */
int isamp; /* t_cen time sample number */
float a_cen; /* centroid about time axis */
float a_mom; /* moment about time axis */
float t_mom; /* moment about amplitude axis */
float a_height; /* height of region for moment calc */
float t_width; /* width of region for moment calc */
int first; /* number of first sample in lobe */
int last; /* number of last sample in lobe */
int prev; /* number of past sample in amp moment */
int small; /* sample number of current smaller mag */
int nvals; /* number of samples in current lobe */
int nvals_min; /* minimum samples in lobe for inclusion*/
int i,k; /* counter indices */
/* Initialize */
initargs(argc, argv);
requestdoc(1);
if (!getparint("verbose", &verbose)) verbose=1;
if (!getparint("nvals_min", &nvals_min)) nvals_min = 1;
/* Get info from first trace */
if (!gettr(&tr)) err("can't get first trace");
nt = tr.ns;
/* dt is used only to set output header value d1 */
if (!getparfloat("dt", &dt)) dt = ((double) tr.dt)/1000000.0;
if (!dt) {
dt = .004;
if (verbose) warn("dt not set, assumed to be .004");
}
invdt = 1.0 / dt;
hdt = 0.5 * dt;
/* Allocate space */
rt = ealloc1float(nt);
ct = ealloc1float(nt);
mt = ealloc1float(nt);
time = ealloc1float(nt);
/* create an array of times */
for (i = 0; i < nt; ++i) {
time[i] = (float)(i + 1) * dt;
}
/* Main loop over traces */
do {
register int i;
/* Load trace into rt and zero ct */
memcpy((void *) rt, (const void *) tr.data, nt*FSIZE);
memset((void *) ct, 0, nt*FSIZE);
first = 0;
mt[0] = fabs(rt[0]);
sum_amp = rt[0];
t_mom = time[0] * mt[0];
for (i = 1; i < nt; ++i) {
mt[i] = fabs(rt[i]);
/* test for zero-crossing or inflection point */
if(rt[i] * rt[i-1] > (float)0) {
if(mt[i] > mt[i-1]) {
if(max_passed) inflect = cwp_true;
} else {
max_passed = cwp_true;
}
} else {
zero_cross = cwp_true;
}
/* if a zero-crossing or inflection point is not */
/* encountered on the current trace sample, */
/* accumulate the time moment */
/* and sum of the lobe amplitude */
if(!zero_cross && !inflect) {
sum_amp = sum_amp + rt[i];
t_mom = t_mom + (time[i] * mt[i]);
} else {
/* otherwise a zero-crossing or inflection has */
/* occured, so stop and determine amplitude */
/* centroid and store results as a centroid */
/* sample for the current lobe */
/* determine the amplitude centroid */
last = i - 1;
/* if inflection point has been found divide it */
/* between the calcs for this lobe and the next */
if (inflect) {
last = i;
rt[last] = rt[last] * 0.5;
mt[last] = fabs(rt[last]);
sum_amp = sum_amp + rt[last];
t_mom = t_mom + (time[last] * mt[last]);
}
nvals = last - first + 1;
if(nvals == 1) {
/* check to see if lobe is big enough */
/* to be included */
if(nvals >= nvals_min) {
ct[i] = rt[i] * 0.5;
}
first = i;
inflect = cwp_false;
max_passed = cwp_false;
zero_cross = cwp_false;
sum_amp = rt[i];
t_mom = time[i] * mt[i];
} else {
a_height = mt[first];
if(mt[first] > mt[last]) {
a_height = mt[last];
}
t_width = time[last] - time[first] + dt;
a_mom = a_height * 0.5;
a_cen = t_width * a_height * a_mom;
small = first;
if (mt[first] > mt[last]) small = last;
for (k = 1; k < nvals; k ++) {
prev = small;
if (prev == first) first = first + 1;
else last = last - 1;
small = first;
if(mt[first] > mt[last]) small = last;
a_height = rt[small] - rt[prev];
a_mom = rt[prev] + (a_height * 0.5);
t_width = t_width - dt;
a_cen = a_cen + a_mom*t_width*a_height;
}
if(sum_amp == 0.0) {
warn("i = %d, sum_amp = %f,divide by zero !",
i,sum_amp);
}
a_cen = a_cen / (sum_amp * dt);
/* determine the time centroid */
t_cen = t_mom / fabs(sum_amp);
/* start accumulating amplitude sum */
/* and time moment for next lobe */
sum_amp = rt[i];
t_mom = time[i] * mt[i];
/* set sample corresponding to t_cen */
/* to amplitude a_cen */
isamp = (int) ((t_cen * invdt) + hdt);
/* check to see if lobe is big enough */
/* to be included */
if(nvals >= nvals_min) {
ct[isamp] = a_cen;
}
first = i;
inflect = cwp_false;
max_passed = cwp_false;
zero_cross = cwp_false;
} /* end if block for case of nvals > 1 */
} /* end calc of new centroid */
} /* end of loop down input trace */
/* Store values */
for (i = 0; i < nt; ++i) {
tr.data[i] = ct[i];
}
/* Set header values and write centroid trace */
tr.ns = nt;
puttr(&tr);
} while (gettr(&tr));
return(CWP_Exit());
}
int
main(int argc, char **argv)
{
cwp_String key1,key2,key3; /* panel/trace/flag key */
cwp_String type1,type2,type3; /* type for panel/trace/flag key*/
int index1,index2,index3; /* indexes for key1/2/3 */
Value val1,val2,val3; /* value of key1/2/3 */
double dval1=0.0,dval2=0.0,dval3=0.0; /* value of key1/2/3 */
double c; /* trace key spacing */
double dmin,dmax,dx; /* trace key start/end/spacing */
double panelno=0.0,traceno=0.0;
int nt; /* number of samples per trace */
int isgn; /* sort order */
int iflag; /* internal flag: */
/* -1 exit */
/* 0 regular mode */
/* 1 first time */
/* 2 trace out of range */
/* initialize */
initargs(argc, argv);
requestdoc(1);
/* get parameters */
if (!getparstring("key1", &key1)) key1 = "ep";
if (!getparstring("key2", &key2)) key2 = "tracf";
if (!getparstring("key3", &key3)) key3 = "trid";
if (!getpardouble("val3", &dval3)) dval3 = 2.;
if (!getpardouble("d", &dx)) dx = 1.;
if (!getpardouble("min", &dmin)) err("need lower panel boundary MIN");
if (!getpardouble("max", &dmax)) err("need upper panel boundary MAX");
checkpars();
/* check parameters */
if (dx==0) err("trace spacing d cannot be zero");
if (dmax<dmin) err("max needs to be greater than min");
if (dx<0) {
isgn = -1;
} else {
isgn = 1;
}
/* get types and index values */
type1 = hdtype(key1);
type2 = hdtype(key2);
type3 = hdtype(key3);
index1 = getindex(key1);
index2 = getindex(key2);
index3 = getindex(key3);
/* loop over traces */
iflag = 1;
while (iflag>=0) {
if (gettr(&tr)) {
/* get header values */
gethval(&tr, index1, &val1);
gethval(&tr, index2, &val2);
dval1 = vtod(type1, val1);
dval2 = vtod(type2, val2);
/* Initialize zero trace */
nt = tr.ns;
memset( (void *) nulltr.data, 0, nt*FSIZE);
if ( iflag==1 ) {
panelno = dval1;
traceno = dmin - dx;
}
iflag = 0;
if ( dval2<dmin || dval2>dmax ) iflag = 2;
/* fprintf(stderr,"if=%d, dmin=%8.0f, dmax=%8.0f\n",iflag,dmin,dmax);*/
} else {
iflag = -1; /* exit flag */
}
/* fprintf(stderr,"if=%d, dval1=%8.0f, dval2=%8.0f\n",iflag,dval1,dval2);*/
/* if new panel or last trace --> finish the previous panel */
if ( panelno!=dval1 || iflag==-1 ) {
/* fprintf(stderr,"finish previous\n");*/
for (c=traceno+dx; isgn*c<=isgn*dmax; c=c+dx) {
assgnval(type2, &val2, c);
puthval(&nulltr, index2, &val2);
assgnval(type3, &val3, dval3);
puthval(&nulltr, index3, &val3);
puttr(&nulltr);
}
traceno = dmin - dx; /* reset to pad present panel */
panelno = dval1; /* added by Ted Stieglitz 28Nov2012*/
}
/* if trace within boundaries --> pad the present panel */
if ( iflag==0 ) {
/* fprintf(stderr,"pad present, trn=%5.0f,dval2=%5.0f\n",traceno,dval2);*/
memcpy( (void *) &nulltr, (const void *) &tr, 240);
for (c=traceno+dx; isgn*c<isgn*dval2; c=c+dx) {
assgnval(type2, &val2, c);
puthval(&nulltr, index2, &val2);
assgnval(type3, &val3, dval3);
puthval(&nulltr, index3, &val3);
puttr(&nulltr);
}
}
/* write the present trace and save header indices */
if ( iflag==0 ) {
puttr(&tr);
panelno = dval1;
traceno = dval2;
}
}
return(CWP_Exit());
}
int
main(int argc, char **argv)
{
float ungpow;
int nt;
cwp_Bool isone, istwo;
float f_one = 1.0;
float f_two = 2.0;
/* Initialize */
initargs(argc, argv);
requestdoc(1);
/* Get info from first trace */
if (!gettr(&tr)) err("can't get first trace");
if (tr.trid != CHARPACK) err("Not char packed traces");
nt = tr.ns;
ungpow = tr.ungpow;
isone = CLOSETO(ungpow, f_one);
istwo = CLOSETO(ungpow, f_two);
/* Main loop over segy traces */
do {
/* Point input char trace at the trace data and unpack.
Since the floats take more room than the chars,
we load in from back end.
Note that the segy field tr.data is declared as
floats, so we need to invent a pointer for the
char array which is actually there.
*/
register int i;
register float val;
register signed char *itr = (signed char *) tr.data;
if (istwo) {
for (i = nt-1; i >= 0; --i) {
val = (float) itr[i];
val *= tr.unscale;
tr.data[i] = val * ABS(val);
}
} else if (isone) {
for (i = nt-1; i >= 0; --i) {
val = (float) itr[i];
val *= tr.unscale;
tr.data[i] = val;
}
} else {
for (i = nt-1; i >= 0; --i) {
val = (float) itr[i];
val *= tr.unscale;
tr.data[i] = (val >= 0.0) ?
pow(val, ungpow) : -pow(-val, ungpow);
}
}
/* Mark as seismic data and remove now unnecessary fields */
tr.trid = 1;
tr.ungpow = 0.0;
tr.unscale = 0.0;
/* Write out restored (unpacked) segy */
puttr(&tr);
} while (gettr(&tr));
return(CWP_Exit());
}
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 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)
{
int nx,nz,ix,iz,verbose;
float tmp;
float **c11,**c13,**c33,**c44,**vp,**vs,**rho,**eps, **delta;
/* input files */
char *c11_file, *c13_file, *c33_file, *c44_file;
FILE *c11fp, *c13fp, *c33fp, *c44fp;
/* output files */
char *vp_file,*vs_file,*rho_file,*eps_file,*delta_file;
FILE *vpfp,*vsfp,*rhofp,*epsfp,*deltafp;
/* hook up getpar */
initargs(argc, argv);
requestdoc(1);
/* get required parameters */
MUSTGETPARINT("nx", &nx );
MUSTGETPARINT("nz", &nz );
/* get parameters */
if (!getparstring("rho_file", &rho_file)) rho_file="rho.bin";
if (!getparstring("c11_file", &c11_file)) c11_file="c11.bin";
if (!getparstring("c13_file", &c13_file)) c13_file="c13.bin";
if (!getparstring("c33_file", &c33_file)) c33_file="c33.bin";
if (!getparstring("c44_file", &c44_file)) c44_file="c44.bin";
if (!getparstring("vp_file", &vp_file)) vp_file="vp.bin";
if (!getparstring("vs_file", &vs_file)) vs_file="vs.bin";
if (!getparstring("eps_file", &eps_file)) eps_file="eps.bin";
if (!getparstring("delta_file", &delta_file)) delta_file="delta.bin";
if (!getparint("verbose", &verbose)) verbose = 1;
checkpars();
/* allocate space */
rho = alloc2float(nz,nx);
c11 = alloc2float(nz,nx);
c13 = alloc2float(nz,nx);
c33 = alloc2float(nz,nx);
c44 = alloc2float(nz,nx);
vp = alloc2float(nz,nx);
vs = alloc2float(nz,nx);
eps = alloc2float(nz,nx);
delta = alloc2float(nz,nx);
/* read mandatory input files */
rhofp = efopen(rho_file,"r");
if (efread(*rho, sizeof(float), nz*nx, rhofp)!=nz*nx)
err("error reading rho_file=%s!\n",rho_file);
c11fp = efopen(c11_file,"r");
if (efread(*c11, sizeof(float), nz*nx, c11fp)!=nz*nx)
err("error reading c11_file=%s!\n",c11_file);
c13fp = efopen(c13_file,"r");
if (efread(*c13, sizeof(float), nz*nx, c13fp)!=nz*nx)
err("error reading c13_file=%s!\n",c13_file);
c33fp = efopen(c33_file,"r");
if (efread(*c33, sizeof(float), nz*nx, c33fp)!=nz*nx)
err("error reading c33_file=%s!\n",c33_file);
c44fp = efopen(c44_file,"r");
if (efread(*c44, sizeof(float), nz*nx, c44fp)!=nz*nx)
err("error reading c44_file=%s!\n",c44_file);
fclose(rhofp);
fclose(c11fp);
fclose(c13fp);
fclose(c33fp);
fclose(c44fp);
/* open output file: */
vpfp = fopen(vp_file,"w");
vsfp = fopen(vs_file,"w");
epsfp = fopen(eps_file,"w");
deltafp = fopen(delta_file,"w");
/* loop over gridpoints and do calculations */
for(ix=0; ix<nx; ++ix){
for(iz=0; iz<nz; ++iz){
vp[ix][iz] = sqrt(c33[ix][iz]/rho[ix][iz]);
vs[ix][iz] = sqrt(c44[ix][iz]/rho[ix][iz]);
eps[ix][iz] = (c11[ix][iz]-c33[ix][iz])/(2*c33[ix][iz]);
tmp = (c13[ix][iz]+c44[ix][iz])*(c13[ix][iz]+c44[ix][iz]);
tmp = tmp - (c33[ix][iz]-c44[ix][iz])*(c33[ix][iz]-c44[ix][iz]);
delta[ix][iz] = tmp/(2*c33[ix][iz]*(c33[ix][iz]-c44[ix][iz]));
}
}
/* write the output files to disk */
efwrite(*vp,sizeof(float),nz*nx,vpfp);
efwrite(*vs,sizeof(float),nz*nx,vsfp);
efwrite(*eps,sizeof(float),nz*nx,epsfp);
efwrite(*delta,sizeof(float),nz*nx,deltafp);
if(verbose){
warn("Output file for vp : %s ",vp_file);
warn("Output file for vs : %s ",vs_file);
warn("Output file for epsilon : %s ",eps_file);
warn("Output file for delta : %s ",delta_file);
}
/* free workspace */
free2float(vp);
free2float(vs);
free2float(rho);
free2float(eps);
free2float(delta);
free2float(c11);
free2float(c13);
free2float(c33);
free2float(c44);
return(CWP_Exit());
}
int
main (int argc, char **argv)
{
int nr,ir,ls,smooth,ndpfz,ns,ixo,ixm,nxo,nxm,nt,
nx,nz,nxb,nxd,ixd,i,ix,iz,nx1,nx0,nxd1,
verbose,tracl,
*nxz;
float tmin,temp,temp1,
dsmax,fpeak,dx,dz,fx,ex,fx1,ex1,
dxm,dxo,dt,fxm,fxo,ft,xo,xm,vs0,vg0,
xs,xg,ez,
*ar,**xr,**zr,
**vold,**ts,**as,**sgs,**tg,**ag,**sgg,**bas,**bag,
**v,**ts1=NULL,**as1=NULL,**sgs1=NULL,
**tg1=NULL,**ag1=NULL,**sgg1=NULL;
FILE *vfp=stdin;
Reflector *r;
Wavelet *w;
/* hook up getpar to handle the parameters */
initargs(argc,argv);
requestdoc(0);
/* get required parameters */
if (!getparint("nx",&nx)) err("must specify nx!\n");
if (!getparint("nz",&nz)) err("must specify nz!\n");
/* get optional parameters */
if (!getparint("nxb",&nxb)) nxb = nx;
if (!getparint("nxd",&nxd)) nxd = 1;
if (!getparfloat("dx",&dx)) dx = 100;
if (!getparfloat("fx",&fx)) fx = 0.0;
if (!getparfloat("dz",&dz)) dz = 100;
if (!getparint("nt",&nt)) nt = 101; CHECK_NT("nt",nt);
if (!getparfloat("dt",&dt)) dt = 0.04;
if (!getparfloat("ft",&ft)) ft = 0.0;
if (!getparint("nxo",&nxo)) nxo = 1;
if (!getparfloat("dxo",&dxo)) dxo = 50;
if (!getparfloat("fxo",&fxo)) fxo = 0.0;
if (!getparint("nxm",&nxm)) nxm = 101;
if (!getparfloat("dxm",&dxm)) dxm = 50;
if (!getparfloat("fxm",&fxm)) fxm = 0.0;
if (!getparfloat("fpeak",&fpeak)) fpeak = 0.2/dt;
if (!getparint("ls",&ls)) ls = 0;
if (!getparfloat("tmin",&tmin)) tmin = 10.0*dt;
if (!getparint("ndpfz",&ndpfz)) ndpfz = 5;
if (!getparint("smooth",&smooth)) smooth = 0;
if (!getparint("verbose",&verbose)) verbose = 0;
/* check the ranges of shots and receivers */
ex = fx+(nx-1)*dx;
ez = (nz-1)*dz;
for (ixm=0; ixm<nxm; ++ixm)
for (ixo=0; ixo<nxo; ++ixo) {
/* compute source and receiver coordinates */
xs = fxm+ixm*dxm-0.5*(fxo+ixo*dxo);
xg = xs+fxo+ixo*dxo;
if (fx>xs || ex<xs || fx>xg || ex<xg)
err("shot or receiver lie outside of specified (x,z) grid\n");
}
decodeReflectors(&nr,&ar,&nxz,&xr,&zr);
if (!smooth) breakReflectors(&nr,&ar,&nxz,&xr,&zr);
/* allocate space */
vold = ealloc2float(nz,nx);
/* read velocities */
if(fread(vold[0],sizeof(float),nx*nz,vfp)!=nx*nz)
err("cannot read %d velocities from file %s",nx*nz,vfp);
/* determine maximum reflector segment length */
tmin = MAX(tmin,MAX(ft,dt));
dsmax = vold[0][0]/(2*ndpfz)*sqrt(tmin/fpeak);
/* make reflectors */
makeref(dsmax,nr,ar,nxz,xr,zr,&r);
/* count reflector segments */
for (ir=0,ns=0; ir<nr; ++ir)
ns += r[ir].ns;
/* make wavelet */
makericker(fpeak,dt,&w);
/* if requested, print information */
if (verbose) {
warn("\nSUSYNVXZ:");
warn("Total number of small reflecting segments is %d.\n",ns);
}
/* set constant segy trace header parameters */
memset( (void *) &tr, 0, sizeof(segy));
tr.trid = 1;
tr.counit = 1;
tr.ns = nt;
tr.dt = 1.0e6*dt;
tr.delrt = 1.0e3*ft;
/* allocate space */
nx1 = 1+2*nxb;
ts = ealloc2float(nz,nx1);
as = ealloc2float(nz,nx1);
sgs = ealloc2float(nz,nx1);
tg = ealloc2float(nz,nx1);
ag = ealloc2float(nz,nx1);
sgg = ealloc2float(nz,nx1);
v = ealloc2float(nz,nx1);
bas = ealloc2float(nz,nx1);
bag = ealloc2float(nz,nx1);
if(nxd>1) {
/* allocate space for interpolation */
ts1 = ealloc2float(nz,nx1);
as1 = ealloc2float(nz,nx1);
sgs1 = ealloc2float(nz,nx1);
tg1 = ealloc2float(nz,nx1);
ag1 = ealloc2float(nz,nx1);
sgg1 = ealloc2float(nz,nx1);
}
/* loop over offsets and midpoints */
for (ixo=0, tracl=0; ixo<nxo; ++ixo){
xo = fxo+ixo*dxo;
if(ABS(xo)>nxb*dx) err("\t band NXB is too small!\n");
nxd1 = nxd;
for (ixm=0; ixm<nxm; ixm +=nxd1){
xm = fxm+ixm*dxm;
xs = xm-0.5*xo;
xg = xs+xo;
/* set range for traveltimes' calculation */
fx1 = xm-nxb*dx;
ex1 = MIN(ex+(nxd1-1)*dxm,xm+nxb*dx);
nx1 = 1+(ex1-fx1)/dx;
nx0 = (fx1-fx)/dx;
temp = (fx1-fx)/dx-nx0;
/* transpose velocity such that the first row is at fx1 */
for(ix=0;ix<nx1;++ix)
for(iz=0;iz<nz;++iz){
if(ix<-nx0)
v[ix][iz] = vold[0][iz];
else if(ix+nx0>nx-2)
v[ix][iz]=vold[nx-1][iz];
else
v[ix][iz] = vold[ix+nx0][iz]*(1.0-temp)
+temp*vold[ix+nx0+1][iz];
}
if(ixm==0 || nxd1==1){
/* No interpolation */
/* compute traveltimes, propagation angles, sigmas
from shot and receiver respectively */
eiktam(xs,0.,nz,dz,0.,nx1,dx,fx1,v,ts,as,sgs,bas);
eiktam(xg,0.,nz,dz,0.,nx1,dx,fx1,v,tg,ag,sgg,bag);
ixd = NINT((xs-fx)/dx);
vs0 = vold[ixd][0];
ixd = NINT((xg-fx)/dx);
vg0 = vold[ixd][0];
/* make one trace */
ex1 = MIN(ex,xm+nxb*dx);
makeone(ts,as,sgs,tg,ag,sgg,ex1,ez,dx,dz,fx1,vs0,vg0,
ls,w,nr,r,nt,dt,ft,tr.data);
/* set segy trace header parameters */
tr.tracl = tr.tracr = ++tracl;
tr.cdp = 1+ixm;
tr.cdpt = 1+ixo;
tr.offset = NINT(xo);
tr.sx = NINT(xs);
tr.gx = NINT(xg);
/* write trace */
puttr(&tr);
}
else {
/* Linear interpolation */
eiktam(xs,0,nz,dz,0,nx1,dx,fx1,v,ts1,as1,sgs1,bas);
eiktam(xg,0,nz,dz,0,nx1,dx,fx1,v,tg1,ag1,sgg1,bag);
ixd = NINT((xs-fx)/dx);
vs0 = vold[ixd][0];
ixd = NINT((xg-fx)/dx);
vg0 = vold[ixd][0];
xm -= nxd1*dxm;
for(i=1; i<=nxd1; ++i) {
xm += dxm;
xs = xm-0.5*xo;
xg = xs+xo;
fx1 = xm-nxb*dx;
ex1 = MIN(ex+(nxd1-1)*dxm,xm+nxb*dx);
nx1 = 1+(ex1-fx1)/dx;
temp = nxd1-i;
temp1 = 1.0/(nxd1-i+1);
for(ix=0;ix<nx1;++ix)
for(iz=0;iz<nz;++iz){
if(i==nxd1){
ts[ix][iz] = ts1[ix][iz];
tg[ix][iz] = tg1[ix][iz];
sgs[ix][iz] = sgs1[ix][iz];
ag[ix][iz] = ag1[ix][iz];
sgg[ix][iz] = sgg1[ix][iz];
as[ix][iz] = as1[ix][iz];
}
else{
ts[ix][iz] = (temp*ts[ix][iz]
+ts1[ix][iz])*temp1;
tg[ix][iz] = (temp*tg[ix][iz]
+tg1[ix][iz])*temp1;
as[ix][iz] = (temp*as[ix][iz]
+as1[ix][iz])*temp1;
sgs[ix][iz] = (temp*sgs[ix][iz]
+sgs1[ix][iz])*temp1;
ag[ix][iz] = (temp*ag[ix][iz]
+ag1[ix][iz])*temp1;
sgg[ix][iz] = (temp*sgg[ix][iz]
+sgg1[ix][iz])*temp1;
}
}
/* make one trace */
ex1 = MIN(ex,xm+nxb*dx);
makeone(ts,as,sgs,tg,ag,sgg,ex1,ez,dx,dz,fx1,vs0,vg0,
ls,w,nr,r,nt,dt,ft,tr.data);
/* set segy trace header parameters */
tr.tracl = tr.tracr = ++tracl;
tr.cdp = 1+ixm-nxd1+i;
tr.cdpt = 1+ixo;
tr.offset = NINT(xo);
tr.d2=dxm;
tr.f2=fxm;
tr.sx = NINT(xs);
tr.gx = NINT(xg);
/* write trace */
puttr(&tr);
}
}
/* set skip parameter */
if(ixm<nxm-1 && ixm>nxm-1-nxd1) nxd1 = nxm-1-ixm;
}
warn("\t finish offset %f\n",xo);
}
free2float(vold);
free2float(ts);
free2float(bas);
free2float(sgs);
free2float(as);
free2float(v);
free2float(tg);
free2float(bag);
free2float(sgg);
free2float(ag);
if(nxd>1) {
free2float(ts1);
free2float(as1);
free2float(sgs1);
free2float(tg1);
free2float(ag1);
free2float(sgg1);
}
return(CWP_Exit());
}
int
main(int argc, char **argv)
{
int nz; /* numer of depth samples */
int iz; /* counter */
int nt; /* number of time samples */
int nzpar; /* number of getparred depth values for velocities */
int nvpar; /* number of getparred velocity values */
int izpar; /* counter */
int verbose; /* verbose flag, =0 silent, =1 chatty */
float dz=0.0; /* depth sampling interval */
float fz=0.0; /* first depth value */
float dt=0.0; /* time sampling interval for velocities */
float ft=0.0; /* first time value */
float z=0.0; /* depth values for times */
float vmin=0.0; /* minimum velocity */
float vmax=0.0; /* maximum velocity */
float *zpar=NULL; /* values of z getparred */
float *vpar=NULL; /* values of v getparred */
float *vz=NULL; /* v(z) velocity as a function of z */
float *zt=NULL; /* z(t) depth as a function of t */
float *temp=NULL; /* temporary storage array */
char *vfile=""; /* name of the velocity file */
/* hook up getpar */
initargs(argc,argv);
requestdoc(1);
/* get time sampling from first header */
if (!gettr(&tr)) err("can't get first trace");
nz = tr.ns;
/* get depth sampling */
if (!getparfloat("dz",&dz)) dz = ((float) tr.d1);
/* determine velocity function v(t) */
vz = ealloc1float(nz);
if (!getparstring("vfile",&vfile)) {
nzpar = countparval("z");
if (nzpar==0) nzpar = 1;
zpar = ealloc1float(nzpar);
if (!getparfloat("z",zpar)) zpar[0] = 0.0;
nvpar = countparval("v");
if (nvpar==0) nvpar = 1;
if (nvpar!=nzpar)err("number of t and v values must be equal");
vpar = ealloc1float(nvpar);
if (!getparfloat("v",vpar)) vpar[0] = 1500.0;
for (izpar=1; izpar<nzpar; ++izpar)
if (zpar[izpar]<=zpar[izpar-1])
err("zpar must increase monotonically");
for (iz=0,z=0.0; iz<nz; ++iz,z+=dz)
intlin(nzpar,zpar,vpar,vpar[0],vpar[nzpar-1],
1,&z,&vz[iz]);
} else { /* read from a file */
if (fread(vz,sizeof(float),nz,fopen(vfile,"r"))!=nz)
err("cannot read %d velocities from file %s",nz,vfile);
}
/* determine minimum and maximum velocities */
for (iz=1,vmin=vmax=vz[0]; iz<nz; ++iz) {
if (vz[iz]<vmin) vmin = vz[iz];
if (vz[iz]>vmax) vmax = vz[iz];
}
/* get parameters */
if (!getparfloat("dt",&dt)) dt = 2.0*dz/vmin;
if (!getparfloat("ft",&ft)) ft = 2.0*ft/vz[0];
if (!getparint("nt",&nt)) nt = 1+(nz-1)*dz*2.0/(dt*vmax);
if (!getparint("verbose",&verbose)) verbose = 0;
CHECK_NT("nt",nt);
/* if requested, print time sampling, etc */
if (verbose) {
warn("Input:");
warn("\tnumber of depth samples = %d",nz);
warn("\tdepth sampling interval = %g",dz);
warn("\tfirst depth sample = %g",fz);
warn("Output:");
warn("\tnumber of time samples = %d",nt);
warn("\ttime sampling interval = %g",dt);
warn("\tfirst time sample = %g",ft);
}
/* allocate workspace */
zt = ealloc1float(nt);
temp = ealloc1float(nz);
/* make z(t) function */
makezt(nz,dz,fz,vz,nt,dt,ft,zt);
/* loop over traces */
do {
/* update header fields */
tr.trid = TREAL;
tr.ns = nt;
tr.dt = dt*1000000.0;
tr.f1 = ft;
tr.d1 = 0.0;
/* resample */
memcpy((void *) temp, (const void *) tr.data,nz*sizeof(float));
ints8r(nz,dz,fz,temp,0.0,0.0,nt,zt,tr.data);
/* put this trace before getting another */
puttr(&tr);
} while(gettr(&tr));
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());
}