int main(int argc, char* argv[])
{
int n1, n2, box1,box2,klo1,khi1,klo2,khi2,kmid1,kmid2;
float **dat,**nsum,**neg,sumA;
sf_file in, out; /* Input and output files */
/* Initialize RSF */
sf_init(argc,argv);
/* standard input */
in = sf_input("in");
/* standard output */
out = sf_output("out");
/* check that the input is float */
if (SF_FLOAT != sf_gettype(in))
sf_error("Need float input");
/* n1 is the fastest dimension (trace length) */
if (!sf_histint(in,"n1",&n1))
sf_error("No n1= in input");
/* leftsize gets n2*n3*n4*... (the number of traces) */
n2 = sf_leftsize(in,1);
/* parameter from the command line (i.e. box1=50 box2=50 ) */
if (!sf_getfloat("box1",&box1)) sf_error("Need box1=");
if (!sf_getfloat("box2",&box2)) sf_error("Nedd box2=");
/* allocate floating point array */
dat= sf_floatalloc2 (n1,n2);
/* initialise the size of the searching box*/
klo1=0;
khi1=box1;
klo2=0;
khi2=box2;
for (int klo1=0, int khi1=box1; khi1<=xmax; ++klo1,++khi1)
/* loop over traces */
for (i2=0; i2 < n2; i2++) {
/* read a trace */
sf_floatread(trace,n1,in);
/* loop over samples */
for (i1=0; i1 < n1; i1++) {
if (trace[i1] > clip) trace[i1]= clip;
else if (trace[i1] < -clip) trace[i1]=-clip;
}
/* write a trace */
sf_floatwrite(trace,n1,out);
}
exit(0);
}
int main(int argc, char* argv[])
{
int nd, m1, na, nr, niter;
float *rr, *dd, *coord, o1, d1, eps;
char *header;
sf_file in, out, head;
sf_init (argc,argv);
in = sf_input("in");
out = sf_output("out");
/* create model */
if (!sf_getint ("nx",&m1)) sf_error("Need n1=");
/* number of bins */
sf_putint(out,"n1",m1);
if (!sf_getfloat("x0",&o1)) sf_error("Need o1=");
/* grid origin */
sf_putfloat (out,"o1",o1);
if (!sf_getfloat("dx",&d1)) sf_error("Need d1=");
/* grid sampling */
sf_putfloat (out,"d1",d1);
if (!sf_getint("niter",&niter)) niter=1+m1*3/2; niter *= 2;
/* number of conjugate-gradient iterations */
if (!sf_getfloat("eps",&eps)) eps=0.2;
/* regularization parameter */
/* create filter */
if (!sf_getint("na",&na)) na=3;
nr = m1 + na;
rr = sf_floatalloc(nr);
if (!sf_histint(in,"n1",&nd)) nd=1;
coord = sf_floatalloc(nd);
dd = sf_floatalloc(nd);
header = sf_getstring("head");
if (NULL == header) {
header = sf_histstring(in,"head");
if (NULL == header) sf_error("Need head=");
}
head = sf_input(header);
if (SF_FLOAT != sf_gettype(head)) sf_error("Need float head");
sf_floatread (coord,nd,head);
sf_fileclose (head);
sf_floatread (dd,nd,in);
levint1 (niter, m1, nr, nd, coord, dd, o1, d1, rr, eps);
sf_floatwrite (rr,m1,out);
exit(0);
}
int main(int argc, char* argv[])
{
int n1,n2,n12;
bool adj;
float d1,d2,o1,o2,v, *model=NULL, *dat=NULL;
sf_file in=NULL, out=NULL;
sf_init(argc,argv);
in = sf_input("in");
out = sf_output("out");
if (!sf_histint(in,"n1",&n1)) sf_error("No n1= in input");
if (!sf_histfloat(in,"d1",&d1)) sf_error("No d1= in input");
if (!sf_histfloat(in,"o1",&o1)) o1=0.;
if (!sf_getbool("adj",&adj)) adj=false;
/* adjoint flag */
if (adj) {
if (!sf_histint(in,"n2",&n2)) sf_error("No n2= in input");
if (!sf_histfloat(in,"d2",&d2)) sf_error("No d2= in input");
if (!sf_histfloat(in,"o2",&o2)) sf_error("No o2= in input");
sf_putint(out,"n2",1);
} else {
if (!sf_getint("n2",&n2)) n2=20;
/* number of offsets (if inv=n) */
if (!sf_getfloat("d2",&d2)) d2=200.;
/* offset sampling (if inv=n) */
if (!sf_getfloat("o2",&o2)) o2=0.;
/* offset origin (if inv=n) */
sf_putint(out,"n2",n2);
sf_putfloat(out,"d2",d2);
sf_putfloat(out,"o2",o2);
}
n12 = n1*n2;
if (!sf_getfloat ("v",&v)) v=1000.;
/* velocity */
dat = sf_floatalloc(n12);
model = sf_floatalloc(n1);
imospray_init (1./v, o2,d2, o1,d1, n1,n2);
if (adj) {
sf_floatread(dat,n12,in);
imospray_lop (true,false,n1,n12,model,dat);
sf_floatwrite(model,n1,out);
} else {
sf_floatread(model,n1,in);
imospray_lop (false,false,n1,n12,model,dat);
sf_floatwrite(dat,n12,out);
}
exit(0);
}
int main(int argc, char* argv[])
{
int n1, n2, i2, i, j;
float *data, sigma, rand, thresh, thresh2;
sf_file in, out;
sf_init(argc,argv);
in = sf_input("in");
out = sf_output("out");
if (!sf_histint(in,"n1",&n1)) sf_error("No n1= in input");
n2 = sf_leftsize(in,1);
if (!sf_getfloat("sigma",&sigma)) sigma=1.;
/* noise magnitude */
if (!sf_getfloat("thresh",&thresh)) thresh=0.93;
/* noise threshold */
if (!sf_getfloat("thresh2",&thresh2)) thresh2=0.4;
/* noise threshold */
data = sf_floatalloc(n1);
for (i2=0; i2 < n2; i2++) {
sf_floatread(data,n1,in);
random_init (121794);
for (i=0; i < n1; i++) {
data[i] += (random0()-0.5)*0.001;
}
random_init (121094);
i=0;
while (i < n1) {
rand = random0();
if (rand < thresh) { /* no noise */
i++;
} else {
for (j=i; j < n1; j++) {
rand = random0();
data[j] += sigma*rand;
rand = random0();
if (rand < thresh2) break;
}
i = j + 1;
}
}
sf_floatwrite(data,n1,out);
}
exit(0);
}
static void mig_grab_par(int *op,int *mig_nz,float *mig_dz,float *fd_a,float *fd_b,float *trick)
{
if (!sf_getint ("operator",op)) *op=1;
if (!sf_getfloat("mig_dz",mig_dz)) *mig_dz=4.0;
if (!sf_getint ("mig_nz",mig_nz)) *mig_nz=1000;
if (!sf_getfloat("fd_a",fd_a)) *fd_a=0.5;
if (!sf_getfloat("fd_b",fd_b)) *fd_b=0.0;
if (!sf_getfloat("fd_trick",trick)) *trick=1.0/6.0;
}
int main(int argc, char* argv[])
{
int j, nx, nt, n;
float dt, dx, lambda; /* dt corresponds to k, dx corresponds to h */
float *uo, *up, *u_true, *dif, *t; /*uo->u(n), up->u(n+1)*/
sf_file out;
sf_init(argc,argv);
out=sf_output("out");
if(!sf_getint("nt",&nt)) sf_error("No nt in command line!");
/* number of temporal points */
if(!sf_getfloat("dt",&dt)) sf_error("No dt in command line!");
/* temporal sampling */
if(!sf_getint("nx",&nx)) sf_error("No nx in command line!");
/* number of spatial points */
if(!sf_getfloat("dx",&dx)) sf_error("No dx in command line!");
/* spatial sampling */
sf_putint(out,"n1",nx);
sf_putfloat(out,"d1",dx);
sf_putfloat(out,"o1",0);
lambda=dt/(dx*dx); /* correpsonding to a^2k/h^2 */
uo=sf_floatalloc(nx);
up=sf_floatalloc(nx);
u_true=sf_floatalloc(nx);
dif=sf_floatalloc(nx);
/* initialize it=0 */
for(j=0;j<nx;j++)
uo[j]=f(dx*j);
/* loop over it until finish computing up[nt-1] */
for(n=0;n<nt-1;n++) /* (nt-1) iterations */
{
up[0]=0;up[nx-1]=0;
for(j=1;j<nx-1;j++)
up[j]=lambda*uo[j-1]+(1-2*lambda)*uo[j]+lambda*uo[j+1];
t=uo;
uo=up;
up=t;
}
for(j=0;j<nx;j++)
{u_true[j]=f_true(j*dx,(nt-1)*dt); dif[j]=fabs(u_true[j]-uo[j]);}
for(j=0;j<nx;j++)
{
sf_warning("%.1f %.8f %.8f %.3e",j*dx, u_true[j], uo[j], dif[j]);
}
/* Here uo refers to the final result. */
sf_floatwrite(uo, nx, out);
exit(0);
}
int main (int argc, char* argv[]) {
int i, n, nbuf;
float upper, lower, upperval, lowerval, *trace=NULL;
sf_file in, out;
/* Initialize RSF */
sf_init (argc, argv);
/* standard input */
in = sf_input ("in");
/* standard output */
out = sf_output ("out");
/* check that the input is float */
if (SF_FLOAT != sf_gettype (in)) sf_error ("Need float input");
n = sf_filesize (in);
if (!sf_getfloat ("upper", &upper)) upper = +FLT_MAX;
/* upper range limit */
if (!sf_getfloat ("lower", &lower)) lower = -FLT_MAX;
/* lower range limit */
if (!sf_getfloat ("upperval", &upperval)) upperval = +FLT_MAX;
/* upper range value */
if (!sf_getfloat ("lowerval", &lowerval)) lowerval = -FLT_MAX;
/* lower range value */
nbuf = BUFSIZ/sizeof(float);
trace = sf_floatalloc (nbuf);
/* loop over traces */
for (n = sf_filesize (in); n > 0; n -= nbuf) {
if (nbuf > n) nbuf=n;
sf_floatread (trace, nbuf, in);
for (i = 0; i < nbuf; i++) {
if (upper > lower) {
if (trace[i] > upper)
trace[i] = upperval;
if (trace[i] < lower)
trace[i] = lowerval;
} else {
if (trace[i] > upper &&
trace[i] < lower)
trace[i] = lowerval;
}
}
sf_floatwrite (trace, nbuf, out);
}
return 0;
}
int main(int argc, char* argv[])
{
int ix, iy, nx, ny;
float dx, dy, zx, zy, x, y, *trace;
sf_file angle;
sf_init(argc,argv);
angle=sf_output("out");
sf_setformat(angle,"native_float");
if (!sf_getint("nx",&nx)) nx=451;
if (!sf_getint("ny",&ny)) ny=451;
if (!sf_getfloat("dx",&dx)) dx=0.1;
if (!sf_getfloat("dy",&dy)) dy=0.1;
if (!sf_getfloat("zx",&zx)) zx=0.;
if (!sf_getfloat("zy",&zy)) zy=0.;
zx = tanf(SF_PI*zx/180.);
zy = tanf(SF_PI*zy/180.);
sf_putint(angle,"n1",2*nx-1);
sf_putfloat(angle,"o1",-(nx-1)*dx);
sf_putfloat(angle,"d1",dx);
sf_putstring(angle,"label1","In-line Offset Slope");
sf_putstring(angle,"unit1","degrees");
sf_putint(angle,"n2",2*ny-1);
sf_putfloat(angle,"o2",-(ny-1)*dy);
sf_putfloat(angle,"d2",dy);
sf_putstring(angle,"label2","Cross-line Offset Slope");
sf_putstring(angle,"unit2","degrees");
trace = sf_floatalloc(2*nx-1);
for (iy=-ny+1; iy < ny; iy++) {
y = tanf(iy*dy*SF_PI/180.);
for (ix=-nx+1; ix < nx; ix++) {
x = tanf(ix*dx*SF_PI/180.);
x = x*x*(1.+zx*zx) + 2.*x*y*zx*zy + y*y*(1.+zy*zy);
x /= (1.+zx*zx+zy*zy);
if (x > 0.) {
trace[ix+nx-1] = atanf(sqrtf(x)) * 180./SF_PI;
} else {
trace[ix+nx-1] = -1.;
}
}
sf_floatwrite(trace,2*nx-1,angle);
}
exit(0);
}
int main(int argc, char* argv[])
{
int nt, nx, ntx, n2, n3, next;
float v0, v1, dt, dx, t0, kur;
float **data;
sf_file inp, out;
sf_init(argc,argv);
inp = sf_input("in");
out = sf_output("out");
if (SF_FLOAT != sf_gettype(inp)) sf_error("Need float input");
if (!sf_histint(inp,"n1",&nt)) sf_error("No n1= in input");
if (!sf_histfloat(inp,"d1",&dt)) sf_error("No d1= in input");
if (!sf_histfloat(inp,"o1",&t0)) t0=0.;
if (!sf_histint(inp,"n2",&nx)) sf_error("No n2= in input");
if (!sf_histfloat(inp,"d2",&dx)) sf_error("No d2= in input");
ntx = nt*nx;
if (!sf_getfloat("v0",&v0)) v0=SF_EPS;
/* initial velocity */
if (!sf_getfloat("v",&v1)) sf_error("Need v=");
/* final velocity */
if (!sf_getint("pad",&n2)) n2=nt; /* padding for stretch */
if (!sf_getint("pad2",&n3)) n3=2*kiss_fft_next_fast_size((n2+1)/2);
/* padding for FFT */
if (!sf_getint("extend",&next)) next=4;
/* trace extension */
velcon_init(nt,nx,dt,dx,t0,n2,n3,next);
data = sf_floatalloc2(nt,nx);
sf_floatread(data[0],ntx,inp);
kur = kurtosis(ntx,data[0]);
sf_warning("kurtosis before: %g",kur);
velcon(data,v0,v1);
kur = kurtosis(ntx,data[0]);
sf_warning("kurtosis after: %g",kur);
sf_floatwrite(data[0],ntx,out);
exit(0);
}
int main(int argc, char*argv[])
{
int n1, n2, i1, i2;
sf_file in, out;
float *u1, *v, *p, *q, lamda, sigma;
sf_init(argc, argv);
in = sf_input("in");
out = sf_output("out");
if(!sf_getfloat("lamda", &lamda)) lamda=0.9;
if(!sf_getfloat("sigma", &sigma)) sigma=1.0;
if(!sf_histint(in, "n1", &n1)) sf_error("n1 needed in input");
n2 = sf_leftsize(in, 1);
u1 = sf_floatalloc(n1);
v = sf_floatalloc(n1);
p = sf_floatalloc(n1);
q = sf_floatalloc(n1);
for(i2=0; i2<n2; i2++)
{
sf_floatread(u1, n1, in);
v[0] = u1[0];
for(i1=1; i1<n1; i1++)
{
p[i1] = (u1[i1] - v[i1-1])/sigma;
p[i1] *= p[i1];
p[i1] = expf(-p[i1]);
v[i1] = lamda * p[i1];
v[i1] = (1-v[i1])*u1[i1] + v[i1]*v[i1-1];
}
v[n1-1] = u1[n1-1];
for(i1=n1-2; i1>=0; i1--)
{
q[i1] = (u1[i1] - v[i1+1])/sigma;
q[i1] *= q[i1];
q[i1] = expf(-q[i1]);
v[i1] = lamda * q[i1];
v[i1] = (1-v[i1])*u1[i1] + v[i1]*v[i1+1];
}
for(i1=1; i1<n1-1; i1++) v[i1] = (p[i1] * q[i1]);
v[0] = v[1]; v[n1-1] = v[n1-2];
sf_floatwrite(v, n1, out);
}
free(u1);
free(p);
free(q);
free(v);
}
int main(int argc, char* argv[])
{
int n1, ia, na, ib, nb;
float a0, b0, a1, b1, da, db, a, b, *trace, *filt;
sf_file inp, out;
sf_init(argc,argv);
inp = sf_input("in");
out = sf_output("out");
if (!sf_histint(inp,"n1",&n1)) sf_error("No n1= in input");
trace = sf_floatalloc(n1);
filt = sf_floatalloc(n1);
if (!sf_getint("na",&na)) na=1;
if (!sf_getint("nb",&nb)) nb=1;
if (!sf_getfloat("a0",&a0)) sf_error("Need a0=");
if (!sf_getfloat("b0",&b0)) sf_error("Need b0=");
if (!sf_getfloat("a1",&a1)) a1=a0;
if (!sf_getfloat("b1",&b1)) b1=b0;
da = (1 >= na)?0.: (a1-a0)/(na-1);
db = (1 >= nb)?0.: (b1-b0)/(nb-1);
sf_putint(out,"n2",na);
sf_putint(out,"n3",nb);
sf_putfloat(out,"o2",a0);
sf_putfloat(out,"o3",b0);
sf_putfloat(out,"d2",da);
sf_putfloat(out,"d3",db);
sf_floatread(trace,n1,inp);
for (ib=0; ib < nb; ib++) {
b = b0 + ib*db;
for (ia=0; ia < na; ia++) {
a = a0 + ia*da;
locov_init(a,b);
locov_filt(n1,trace,filt);
sf_floatwrite(filt,n1,out);
}
}
exit(0);
}
int main(int argc, char* argv[])
{
int n1, n2, n12, nv, inv;
bool adj, add;
float *modl, *data, o1,d1,o2,d2, vel,v0;
sf_file in, out;
sf_init(argc,argv);
in = sf_input("in");
out = sf_output("out");
if (!sf_histint(in,"n1",&n1)) sf_error("No n1= in input");
if (!sf_histint(in,"n2",&n2)) sf_error("No n2= in input");
n12 = n1*n2;
if (!sf_histfloat(in,"o1",&o1)) o1=0.;
if (!sf_histfloat(in,"o2",&o2)) o2=0.;
if (!sf_histfloat(in,"d1",&d1)) sf_error("No d1= in input");
if (!sf_histfloat(in,"d2",&d2)) sf_error("No d2= in input");
if (!sf_getfloat("vel",&vel)) vel=0.75;
/* final velocity */
if (!sf_getfloat("v0",&v0)) v0=0.;
/* starting velocity */
if (!sf_getint("nv",&nv)) nv=n1;
/* number of steps */
if (!sf_getbool("adj",&adj)) adj=false;
/* adjoint flag */
if (!sf_getbool("add",&add)) add=false;
/* addition flag */
if (!sf_getint("inv",&inv)) inv=0;
/* amplitude type */
modl = sf_floatalloc(n12);
data = sf_floatalloc(n12);
sf_floatread (adj? data: modl,n12,in);
velcon_init (inv,vel,v0,o1,n1,n2,nv,d1,d2);
velcon_lop (adj, add, n12, n12, modl, data);
sf_floatwrite (adj? modl: data,n12,out);
exit(0);
}
int main(int argc, char*argv[])
{
sf_file in, out ;
int i1, i2, n1, n2, *v;
float o1, d1, **u;
char *l1, *u1;
sf_axis ax;
sf_init(argc, argv);
in = sf_input("in"); /* delay file (int) */
out = sf_output("out");
if(!sf_histint(in, "n1", &n2)) sf_error("n1 needed");
sf_shiftdim(in, out, 1);
if(!sf_getint("n1", &n1)) n1=1000; /* samples */
if(!sf_getfloat("o1", &o1)) o1=0.0; /* sampling interval */
if(!sf_getfloat("d1", &d1)) d1=0.004; /* original */
if((l1=sf_getstring("l1")) == NULL) l1="Time"; /* label "Time" */
if((u1=sf_getstring("u1")) == NULL) u1="s"; /* unit "s" */
ax = sf_maxa(n1, o1, d1);
sf_setlabel(ax, l1);
sf_setunit(ax, u1);
sf_oaxa(out, ax, 1);
sf_putint(out, "n2", n2);
sf_settype(out, SF_FLOAT);
v = sf_intalloc(n2);
u = sf_floatalloc2(n1, n2);
sf_intread(v, n2, in);
for(i2=0; i2<n2; i2++)
for(i1=0; i1<n1; i1++)
if(i1==v[i2]) u[i2][i1] = 1;
else u[i2][i1] = 0;
sf_floatwrite(u[0], n1*n2, out);
free(v);
free(u[0]);
free(u);
return 0;
}
int main(int argc, char* argv[])
{
bool nan;
int i, n, nbuf;
float clip, value, *trace;
sf_file in=NULL, out=NULL; /* Input and output files */
/* Initialize RSF */
sf_init(argc,argv);
/* standard input */
in = sf_input("in");
/* standard output */
out = sf_output("out");
/* check that the input is float */
if (SF_FLOAT != sf_gettype(in)) sf_error("Need float input");
if (!sf_getfloat("clip",&clip)) sf_error("Need clip=");
/* clip value */
if (!sf_getfloat("value",&value)) value=clip;
/* replacement value */
/* allocate floating point buffer */
nbuf = sf_bufsiz(in)/sizeof(float);
trace = sf_floatalloc (nbuf);
/* process buffers */
for (n = sf_filesize(in); n > 0; n -= nbuf) {
if (nbuf > n) nbuf=n;
sf_floatread(trace,nbuf,in);
for (i=0; i < nbuf; i++) {
nan = (bool) !isfinite(trace[i]);
if (nan) trace[i] = SF_SIG(trace[i])*value;
else if (trace[i] > clip) trace[i]= value;
else if (trace[i] < -clip) trace[i]=-value;
}
sf_floatwrite(trace,nbuf,out);
}
exit(0);
}
int main(int argc, char* argv[]) {
int n1, n2, n3, i1, i2, i3;
float t0,v0, dt,dv, t1, v1, slope,tmax,band, t,taper, *data;
sf_file in, out;
sf_init (argc,argv);
in = sf_input("in");
out = sf_output("out");
if (!sf_histint(in,"n1",&n1)) sf_error("No n1= in input");
if (!sf_histint(in,"n2",&n2)) sf_error("No n2= in input");
n3 = sf_leftsize(in,2);
if (!sf_histfloat(in,"o1",&t0)) sf_error("No o1= in input");
if (!sf_histfloat(in,"d1",&dt)) sf_error("No d1= in input");
if (!sf_histfloat(in,"o2",&v0)) sf_error("No o2= in input");
if (!sf_histfloat(in,"d2",&dv)) sf_error("No d2= in input");
if (!sf_getfloat("t1",&t1)) t1=t0; // start time
if (!sf_getfloat("v1",&v1)) v1=v0+(n2-1)*dv; // end velocity
if (!sf_getfloat("band",&band)) band=20*dt; // start time
slope = (t0+(n1-1)*dt-t1)/(v1-v0);
data = sf_floatalloc(n1);
for (i3=0; i3 < n3; i3++) {
for (i2=0; i2 < n2; i2++) {
tmax = t1 + i2*dv*slope;
sf_floatread (data,n1,in);
for (i1=0; i1 < n1; i1++) {
t = t0+i1*dt;
if (t > tmax) {
data[i1] = 0.0f;
} else if (t > tmax-band) {
taper = sinf(0.5 * SF_PI * (t-tmax)/band);
data[i1] *= taper*taper;
}
}
sf_floatwrite (data,n1,out);
}
}
exit(0);
}
int main(int argc, char* argv[])
{
bool adj, verb;
int n1, n2, n12, n3, i3, order, ns;
float *input, *smooth, **slope, eps;
sf_file in, out, dip;
sf_init(argc,argv);
in = sf_input("in");
dip = sf_input("dip");
out = sf_output("out");
if (!sf_histint(in,"n1",&n1)) sf_error("No n1= in input");
if (!sf_histint(in,"n2",&n2)) sf_error("No n2= in input");
n3 = sf_leftsize(in,2);
n12 = n1*n2;
if (!sf_getbool("verb",&verb)) verb=false;
/* verbosity flag */
if (!sf_getint("ns",&ns)) ns=0;
/* smoothing radius */
if (!sf_getbool("adj",&adj)) adj=false;
/* adjoint flag */
if (!sf_getfloat("eps",&eps)) eps=0.01;
/* regularization */
if (!sf_getint("order",&order)) order=1;
/* accuracy order */
input = sf_floatalloc(n12);
smooth = sf_floatalloc(n12);
slope = sf_floatalloc2(n1,n2);
pwsmooth_init(ns, n1, n2, order, eps);
for (i3=0; i3 < n3; i3++) {
if (verb) sf_warning("slice %d of %d;",i3+1,n3);
sf_floatread(input,n12,in);
sf_floatread(slope[0],n12,dip);
pwsmooth_set(slope);
if (adj) {
pwsmooth_lop(true,false,n12,n12,smooth,input);
} else {
pwsmooth_lop(false,false,n12,n12,input,smooth);
}
sf_floatwrite(smooth,n12,out);
}
if (verb) sf_warning(".");
exit(0);
}
void vp_minmax (float emin1, float emin2, float emax1, float emax2)
{
bool btmp;
float ftmp;
fmin1 = (!sf_getfloat ("min1",&min1)); if(fmin1) min1=emin1;
fmin2 = (!sf_getfloat ("min2",&min2)); if(fmin2) min2=emin2;
fmax1 = (!sf_getfloat ("max1",&max1)); if(fmax1) max1=emax1;
fmax2 = (!sf_getfloat ("max2",&max2)); if(fmax2) max2=emax2;
if (transp) {
ftmp=min1; min1=min2; min2=ftmp;
btmp=fmin1; fmin1=fmin2; fmin2=btmp;
ftmp=max1; max1=max2; max2=ftmp;
btmp=fmax1; fmax1=fmax2; fmax2=btmp;
}
}
int main(int argc, char* argv[])
{
int nx, nf, i2, n2, lag, niter;
bool single, verb;
float eps;
sf_complex *xx, *yy, *ff;
sf_file in, out, filt;
sf_init(argc,argv);
in = sf_input("in");
out = sf_output("out");
filt = sf_input("filt");
if (SF_COMPLEX != sf_gettype(in) ||
SF_COMPLEX != sf_gettype(filt)) sf_error("Need float input");
if (!sf_histint(in,"n1",&nx)) sf_error("No n1= in input");
n2 = sf_leftsize(in,1);
if (!sf_histint(filt,"n1",&nf)) sf_error("No n1= in filtin");
xx = sf_complexalloc(nx);
ff = sf_complexalloc(nf);
if (!sf_getbool("single",&single)) single=true;
/* single channel or multichannel */
if (!sf_getint("lag",&lag)) lag=1;
/* lag for internal convolution */
yy = sf_complexalloc(nx);
if (!sf_getfloat("eps",&eps)) eps=1.0f;
/* regularizion parameter */
if (!sf_getint("niter",&niter)) niter=100;
/* number of iterations */
if (!sf_getbool("verb",&verb)) verb=false;
/* verbosity flag */
if (!single) sf_complexread (ff,nf,filt);
for (i2=0; i2 < n2; i2++) {
if (single) sf_complexread (ff,nf,filt);
sf_complexread (xx,nx,in);
cicai1_init(nf,ff,lag);
sf_csolver_reg(sf_ccopy_lop,sf_ccgstep,cicai1_lop,nx,nx,nx,yy,xx,niter,eps,"verb",verb,"end");
sf_ccgstep_close();
sf_complexwrite (yy,nx,out);
}
exit(0);
}
void shot_image_init(float dx,float dy,float dz,int nz,struct shot_image_par_type *image_par)
/*< initialize image >*/
{
sf_file imagex, imagez;
float *tmpimg;
float ohx,ohy;
int i;
tmpimg=sf_floatalloc(nz);
vector_value_f(tmpimg,0.0,nz);
image_par->dx=dx; image_par->dy=dy; image_par->dz=dz;
image_par->nx=(image_par->max_x-image_par->min_x)/(image_par->dx)+1;
image_par->ny=(image_par->max_y-image_par->min_y)/(image_par->dy)+1;
image_par->nz=nz;
if (!sf_getfloat("imageohx",&ohx)) ohx=-image_par->dx*image_par->nhx/2;
if (!sf_getfloat("imageohy",&ohy)) ohy=-image_par->dy*image_par->nhy/2;
image_par->ohx=ohx; image_par->ohy=ohy;
imagex = sf_output("Image_hx");
imagez = sf_output("Image_hz");
sf_putfloat(imagex,"o1",0.0); sf_putfloat(imagex,"d1",image_par->dz); sf_putint(imagex,"n1",image_par->nz);
sf_putfloat(imagex,"o2",image_par->ohx); sf_putfloat(imagex,"d2",image_par->dx); sf_putint(imagex,"n2",image_par->nhx);
sf_putfloat(imagex,"o3",image_par->ohy); sf_putfloat(imagex,"d3",image_par->dy); sf_putint(imagex,"n3",image_par->nhy);
sf_putfloat(imagex,"o4",image_par->min_x); sf_putfloat(imagex,"d4",image_par->dx); sf_putint(imagex,"n4",image_par->nx);
sf_putfloat(imagex,"o5",image_par->min_y); sf_putfloat(imagex,"d5",image_par->dy); sf_putint(imagex,"n5",image_par->ny);
sf_putfloat(imagez,"o1",0.0); sf_putfloat(imagez,"d1",image_par->dz); sf_putint(imagez,"n1",image_par->nz);
sf_putfloat(imagez,"o2",image_par->ohx); sf_putfloat(imagez,"d2",image_par->dx); sf_putint(imagez,"n2",image_par->nhx);
sf_putfloat(imagez,"o3",image_par->ohy); sf_putfloat(imagez,"d3",image_par->dy); sf_putint(imagez,"n3",image_par->nhy);
sf_putfloat(imagez,"o4",image_par->min_x); sf_putfloat(imagez,"d4",image_par->dx); sf_putint(imagez,"n4",image_par->nx);
sf_putfloat(imagez,"o5",image_par->min_y); sf_putfloat(imagez,"d5",image_par->dy); sf_putint(imagez,"n5",image_par->ny);
for(i=0;i<image_par->ny*image_par->nx*image_par->nhy*image_par->nhx;i++) {
sf_floatwrite(tmpimg,image_par->nz,imagex);
sf_floatwrite(tmpimg,image_par->nz,imagez);
}
free(tmpimg);
image_par->imagex = imagex;
image_par->imagez = imagez;
}
struct shot_image_par_type shot_image_grab_par(void)
/*< initialize >*/
{
struct shot_image_par_type image_par;
float min_x,max_x,min_y,max_y;
int nhx,nhy,ihx;
if (!sf_getint("nhx",&nhx) ) nhx=1;
if (!sf_getint("nhy",&nhy) ) nhy=1;
if (!sf_getfloat("image_min_x",&min_x)) min_x=1000.0;
if (!sf_getfloat("image_max_x",&max_x)) max_x=10000.0;
if (!sf_getfloat("image_min_y",&min_y)) min_y=0.0;
if (!sf_getfloat("image_max_y",&max_y)) max_y=0.0;
image_par.nhx=nhx; image_par.nhy=nhy;
image_par.min_x=min_x; image_par.max_x=max_x;
image_par.min_y=min_y; image_par.max_y=max_y;
image_par.sincx_table=sf_floatalloc(8*2001);
for(ihx=0;ihx<2001;ihx++) mksinc((float)(ihx)*0.0005,8,image_par.sincx_table+ihx*8);
sf_warning("Image: minx=%f maxx=%f\n",image_par.min_x,image_par.max_x);
return image_par;
}
int main(int argc,char*argv[])
{
sf_file in, out;
int i1, i2, j2, i3, n1, n2, n3, nf;
float **u1, **u2, sigma, d2;
sf_init(argc,argv);
in = sf_input("in");
out = sf_output("out");
n3 = sf_leftsize(in, 2);
if (!sf_histint(in, "n1", &n1)) sf_error("No n1= in input file");
if (!sf_histint(in, "n2", &n2)) sf_error("No n2= in input file");
if (!sf_getfloat("sigma", &sigma)) sigma=1.0;
/* sigma */
if (!sf_getint("nf", &nf)) nf=100;
/* frequency samples [0, 0.5] */
d2 = SF_PI/(nf-1);
sf_putint(out, "n2", nf);
sf_putfloat(out, "d2", 0.5/(nf-1));
dgauss_init(n1, 1.0/sigma);
u1 = sf_floatalloc2(n1, n2);
u2 = sf_floatalloc2(n1, nf);
for (i3=0; i3<n3; i3++)
{
sf_floatread(u1[0], n1*n2, in);
for(i1=0; i1<n1; i1++)
{
for (j2=0; j2<nf; j2++)
for (i2=0; i2<n2; i2++)
{
u2[j2][i1] = u1[i2][i1] * dgauss_val(i2, d2*j2)
* powf(0.5/SF_PI, i2);
}
}
sf_floatwrite(u2[0], n1*nf, out);
}
free(u1[0]);
free(u2[0]);
free(u1);
free(u2);
dgauss_close();
exit(0);
}
int main (int argc, char* argv[])
{
int n, n1, n2, i1, i2, iv, nv;
float dv, vel, v2, k, dk, dt;
float *t, *d;
sf_file in, out;
sf_init(argc,argv);
in = sf_input("in");
out = sf_output("out");
if (SF_FLOAT != sf_gettype(in)) sf_error("Need float input");
if (!sf_histint(in,"n1",&n1)) sf_error("No n1= in input");
if (!sf_histint(in,"n2",&n2)) sf_error("No n2= in input");
n = n1-1;
if (!sf_getint("nv",&nv)) sf_error("Need nv=");
if (!sf_getfloat("vel",&vel)) sf_error("Need vel=");
v2 = 0.5*vel*vel*SF_SIG(vel);
dv = v2/(nv-1);
if (!sf_histfloat(in,"dt",&dt)) sf_error("No dt= in input");
if (!sf_histfloat(in,"d2",&dk)) sf_error("No dk= in input");
dk *= 2*SF_PI;
t = sf_floatalloc(n1);
d = sf_floatalloc(n);
tricheb_init(n);
for (i2=0; i2 < n2; i2++) {
k = i2*dk;
k *= k*dt*dv*0.25;
sf_floatread(t,n1,in);
tricheb_step(-dv,k);
for (iv=0; iv < nv; iv++) {
tricheb_apply (d,t);
tricheb_solve (d,t+1);
t[0] = 0.;
for (i1=1; i1 < n; i1 +=2) {
t[0] += t[i1]*SF_SIG(dv) - t[i1+1];
}
}
sf_floatwrite(t,n1,out);
}
exit(0);
}
int main(int argc, char* argv[])
{
bool verb;
int i, dim, n[SF_MAX_DIM], nd, rect[SF_MAX_DIM], niter;
float *noi, *sig, *rat, eps;
char key[6];
sf_file fnoi, fsig, flow;
sf_init(argc,argv);
fnoi = sf_input("in");
fsig = sf_input("sig"); /* input signal */
if (SF_FLOAT != sf_gettype(fnoi) ||
SF_FLOAT != sf_gettype(fsig)) sf_error("Need float input");
flow = sf_output("out");
dim = sf_filedims (fnoi,n);
nd = 1;
for (i=0; i < dim; i++) {
snprintf(key,6,"rect%d",i+1);
if (!sf_getint(key,rect+i)) rect[i]=1;
/*( rect#=(1,1,...) smoothing radius on #-th axis )*/
nd *= n[i];
}
noi = sf_floatalloc(nd);
sig = sf_floatalloc(nd);
rat = sf_floatalloc(nd);
if (!sf_getint("niter",&niter)) niter=100;
/* number of iterations */
if (!sf_getbool("verb",&verb)) verb=true;
/* verbosity */
if (!sf_getfloat("eps",&eps)) eps=0.0f;
/* regularization */
sf_divn_init(dim, nd, n, rect, niter, verb);
sf_floatread(noi,nd,fnoi);
sf_floatread(sig,nd,fsig);
sf_divne (noi, sig, rat, eps);
sf_floatwrite(rat,nd,flow);
exit(0);
}
int main(int argc, char** argv)
{
int n1, n2, i1, i2;
float* vint=NULL;
float o1, d1, v0, alpha, t;
sf_file in=NULL, out=NULL;
sf_init (argc, argv);
in = sf_input("in");
out = sf_output("out");
if (!sf_histint (in,"n1",&n1)) sf_error ("No n1= in input\n");
if (!sf_histint (in,"n2",&n2)) sf_error ("No n2= in input\n");
if (!sf_histfloat (in,"o1",&o1)) o1=0.;
if (!sf_histfloat (in,"d1",&d1)) sf_error ("No d1= in input\n");
if (!sf_getfloat ("v0",&v0)) v0 = 1.5;
/* initial velocity */
if (!sf_getfloat ("alpha",&alpha)) alpha = 0.5;
/* velocity gradient */
vint = sf_floatalloc(n1);
for (i1=0; i1 < n1; i1++) {
t = alpha*(o1+i1*d1);
if (t > 0.) {
vint[i1] = v0 * sqrtf((expf(t)-1.)/t);
} else {
vint[i1] = v0;
}
}
for (i2=0; i2 < n2; i2++) {
sf_floatwrite(vint,n1,out);
}
exit (0);
}
int main(int argc, char* argv[])
{
int nz, nx, ix, iz;
float *trace, x0, z0, x, z, dx, dz, v0, g, v, a, d;
sf_file mod;
sf_init (argc,argv);
mod = sf_output("out");
if (!sf_getint("nz",&nz)) nz=601;
/* vertical dimension */
if (!sf_getint("nx",&nx)) nx=401;
/* horizontal dimension */
dz = 4./(nz-1);
dx = 6./(nx-1);
sf_putint (mod,"n1",nz);
sf_putfloat (mod,"d1",dz);
sf_putfloat (mod,"o1",0.);
sf_putint (mod,"n2",nx);
sf_putfloat (mod,"d2",dx);
sf_putfloat (mod,"o2",0.);
sf_setformat (mod,"native_float");
if(!sf_getfloat ("x0",&x0)) x0=4.;
/* anomaly center in x */
if(!sf_getfloat ("z0",&z0)) z0=1.5;
/* anomaly center in z */
if(!sf_getfloat ("v0",&v0)) v0=1.5;
/* surface velocity */
if(!sf_getfloat ("g",&g)) g=0.6;
/* velocity gradient */
if(!sf_getfloat ("a",&a)) a=1.;
/* anomaly magnitude */
if(!sf_getfloat ("d",&d)) d=1.;
/* anomaly radius */
d *= d;
trace = sf_floatalloc(nz);
for (ix=0; ix < nx; ix++) {
x = ix*dx - x0;
x *= x;
for (iz=0; iz < nz; iz++) {
z = iz*dz;
v = v0 + g*z;
z = z - z0;
z = z*z + x;
trace[iz] = v + a*exp(-z/d);
}
sf_floatwrite (trace,nz,mod);
}
exit (0);
}
int main (int argc, char* argv[])
{
bool der;
int i1, n1, i2, n2, irep, nrep;
float *data, *data2, rect;
sf_file in, out;
sf_init (argc, argv);
in = sf_input ("in");
out = sf_output ("out");
if (SF_FLOAT != sf_gettype(in)) sf_error("Need float input");
if (!sf_histint(in,"n1",&n1)) sf_error("No n1= in input");
n2 = sf_leftsize(in,1);
if (!sf_getbool("der",&der)) der=false;
/* compute derivative */
if (!sf_getfloat("rect",&rect)) rect=1;
/* smoothing radius */
recgauss_init (n1,der,rect);
data = sf_floatalloc (n1);
data2 = der? sf_floatalloc (n1): NULL;
if (!sf_getint("repeat",&nrep)) nrep=1;
/* repeat filtering several times */
for (i2=0; i2 < n2; i2++) {
if (der) {
sf_floatread(data2,n1,in);
data[0] = data2[1]-data2[0];
for (i1=1; i1 < n1-1; i1++) {
data[i1] = 0.5*(data2[i1+1]-data2[i1-1]);
}
data[n1-1] = data2[n1-1]-data2[n1-2];
} else {
sf_floatread(data,n1,in);
}
for (irep=0; irep < nrep; irep++) {
recgauss (data);
}
sf_floatwrite(data,n1,out);
}
exit (0);
}
int main(int argc, char* argv[])
{
int dim, n[3], ix, iy, iz;
float v0, b, o[3], d[3], l[3], source[3], s, xi, *t;
sf_file vel, time;
sf_init(argc,argv);
vel = sf_input("in");
time = sf_output("out");
dim = sf_filedims(vel,n);
if(!sf_histfloat(vel,"o1",&o[0])) o[0]=0.;
if(!sf_histfloat(vel,"o2",&o[1])) o[1]=0.;
if(!sf_histfloat(vel,"o3",&o[2])) o[2]=0.;
if(!sf_histfloat(vel,"d1",&d[0])) sf_error("No d1 in input");
if(!sf_histfloat(vel,"d2",&d[1])) sf_error("No d2 in input");
if(!sf_histfloat(vel,"d3",&d[2])) d[2]=d[1];
if(!sf_getfloat("s1",&source[0])) source[0]=o[0];
if(!sf_getfloat("s2",&source[1])) source[1]=o[1];
if(!sf_getfloat("s3",&source[2])) source[2]=o[2];
if(!sf_getfloat("v0",&v0)) v0=1.;
if(!sf_getfloat("b",&b)) b=0.;
if(!sf_getfloat("s",&s)) s=0.;
t = sf_floatalloc(n[2]*n[1]*n[0]);
if (dim < 3)
n[2] = 1;
for (ix=0; ix < n[2]; ix++) {
l[2] = ix*d[2]+o[2]-source[2];
for (iy=0; iy < n[1]; iy++) {
l[1] = iy*d[1]+o[1]-source[1];
for (iz=0; iz < n[0]; iz++) {
l[0] = iz*d[0]+o[0]-source[0];
xi = b*b*(l[0]*l[0]+l[1]*l[1]+l[2]*l[2])/(2*(v0+b*l[0])*v0);
t[iz+iy*n[0]+ix*n[1]*n[0]] = (1/b)*logf(1+xi+sqrtf((2+xi)*xi));
}
}
}
sf_floatwrite(t,n[2]*n[1]*n[0],time);
exit(0);
}
int main(int argc, char *argv[])
{
int i1,i2,i3,n1,n11,n2,n22,n3,n33;
float *tracein,*ref,thr;
sf_file in=NULL, simi=NULL, out=NULL;
sf_init(argc,argv);
in = sf_input("in");
out = sf_output("out");
simi=sf_input("similarity");
if(!sf_histint(in,"n1",&n1)) sf_error("No n1 in input");
if(!sf_histint(in,"n2",&n2)) sf_error("No n2 in input");
n3=sf_leftsize(in,2);
if(!sf_histint(simi,"n1",&n11)) sf_error("No n1 in input");
if(!sf_histint(simi,"n2",&n22)) sf_error("No n2 in input");
n33=sf_leftsize(simi,2);
if(n1!=n11 || n2!=n22 || n3!=n33) sf_error("Dimension dismatch");
tracein=sf_floatalloc(n1);
ref=sf_floatalloc(n1);
if (!sf_getfloat("thr",&thr)) sf_error("Need thr=");
/* thresholding level */
for(i3=0;i3<n3;i3++)
{
for(i2=0;i2<n2;i2++)
{
sf_floatread(tracein,n1,in);
sf_floatread(ref,n1,simi);
for(i1=0;i1<n1;i1++)
{
if(ref[i1] < thr)
tracein[i1] = 0;
else
tracein[i1]=tracein[i1];
}
sf_floatwrite(tracein,n1,out);
}
}
exit(0);
}
void vp_title_init(sf_file file)
{
char *where;
if (NULL != (where = sf_getstring("wheretitle"))) {
verttitle = (*where == 'l' || *where == 'r');
wheretitle = (*where == 'l' || *where == 't');
} else {
verttitle = false;
wheretitle = true;
}
if (!sf_getbool ("wanttitle",&wanttitle)) wanttitle=true;
if (!sf_getint ("titlefat",&titlefat)) titlefat=0;
if (!sf_getfloat ("titlesz",&titlesz)) titlesz=10.;
if (NULL == (title = sf_getstring("title")) &&
NULL == (title = sf_histstring(file,"title")) &&
NULL == (title = sf_histstring(file,"in")))
title = blank;
}
int main(int argc, char* argv[])
{
bool adj, inv;
int nn,n1,n2,i1,i2;
float rho, *pp=NULL;
sf_file in=NULL, out=NULL;
sf_init(argc,argv);
in = sf_input("in");
out = sf_output("out");
if (!sf_histint(in,"n1",&n1)) sf_error("No n1= in input");
n2 = sf_leftsize(in,1);
if (!sf_getbool("adj",&adj)) adj=false;
/* If y, apply adjoint */
if (!sf_getbool("inv",&inv)) inv=false;
/* If y, do differentiation instead of integration */
if (!sf_getfloat("rho",&rho)) rho = 1.-1./n1;
/* Leaky integration constant */
if (inv) {
sf_warning("%s half-order differentiation",adj? "anticausal":"causal");
} else {
sf_warning("%s half-order integration",adj? "anticausal":"causal");
}
nn = 2*kiss_fft_next_fast_size((n1+1)/2);
pp = sf_floatalloc(nn);
sf_halfint_init (inv, nn, rho);
for (i2=0; i2 < n2; i2++) {
sf_floatread (pp,n1,in);
for (i1=n1; i1 < nn; i1++) {
pp[i1]=0.;
}
sf_halfint (adj, pp);
sf_floatwrite (pp,n1,out);
}
exit(0);
}
