int main(int argc, char *argv[])
{
float maxpow = 0.0, inx = 0.0, iny = 0.0;
double centerr, offsetf;
int zoomlevel, maxzoom, minzoom, xid, psid;
char *rootfilenm, inchar;
fftpart *lofp;
fftview *fv;
if (argc == 1) {
printf("\nusage: explorefft fftfilename\n\n");
exit(0);
}
printf("\n\n");
printf(" Interactive FFT Explorer\n");
printf(" by Scott M. Ransom\n");
printf(" October, 2001\n");
print_help();
{
int hassuffix = 0;
char *suffix;
hassuffix = split_root_suffix(argv[1], &rootfilenm, &suffix);
if (hassuffix) {
if (strcmp(suffix, "fft") != 0) {
printf("\nInput file ('%s') must be a FFT file ('.fft')!\n\n", argv[1]);
free(suffix);
exit(0);
}
free(suffix);
} else {
printf("\nInput file ('%s') must be a FFT file ('.fft')!\n\n", argv[1]);
exit(0);
}
}
/* Read the info file */
readinf(&idata, rootfilenm);
if (strlen(remove_whitespace(idata.object)) > 0) {
printf("Examining %s data from '%s'.\n\n",
remove_whitespace(idata.object), argv[1]);
} else {
printf("Examining data from '%s'.\n\n", argv[1]);
}
N = idata.N;
T = idata.dt * idata.N;
#ifdef USEMMAP
printf("Memory mapping the input FFT. This may take a while...\n");
mmap_file = open(argv[1], O_RDONLY);
{
int rt;
struct stat buf;
rt = fstat(mmap_file, &buf);
if (rt == -1) {
perror("\nError in fstat() in explorefft.c");
printf("\n");
exit(-1);
}
Nfft = buf.st_size / sizeof(fcomplex);
}
lofp = get_fftpart(0, Nfft);
#else
{
int numamps;
fftfile = chkfopen(argv[1], "rb");
Nfft = chkfilelen(fftfile, sizeof(fcomplex));
numamps = (Nfft > MAXBINS) ? (int) MAXBINS : (int) Nfft;
lofp = get_fftpart(0, numamps);
}
#endif
/* Plot the initial data */
{
int initnumbins = INITIALNUMBINS;
if (initnumbins > Nfft) {
initnumbins = next2_to_n(Nfft) / 2;
zoomlevel = LOGDISPLAYNUM - (int) (log(initnumbins) / log(2.0));
minzoom = zoomlevel;
} else {
zoomlevel = LOGDISPLAYNUM - LOGINITIALNUMBINS;
minzoom = LOGDISPLAYNUM - LOGMAXBINS;
}
maxzoom = LOGDISPLAYNUM - LOGMINBINS;
centerr = initnumbins / 2;
}
fv = get_fftview(centerr, zoomlevel, lofp);
/* Prep the XWIN device for PGPLOT */
xid = cpgopen("/XWIN");
if (xid <= 0) {
free(fv);
#ifdef USEMMAP
close(mmap_file);
#else
fclose(fftfile);
#endif
free_fftpart(lofp);
exit(EXIT_FAILURE);
}
cpgscr(15, 0.4, 0.4, 0.4);
cpgask(0);
cpgpage();
offsetf = plot_fftview(fv, maxpow, 1.0, 0.0, 0);
do {
cpgcurs(&inx, &iny, &inchar);
if (DEBUGOUT)
printf("You pressed '%c'\n", inchar);
switch (inchar) {
case 'A': /* Zoom in */
case 'a':
centerr = (inx + offsetf) * T;
case 'I':
case 'i':
if (DEBUGOUT)
printf(" Zooming in (zoomlevel = %d)...\n", zoomlevel);
if (zoomlevel < maxzoom) {
zoomlevel++;
free(fv);
fv = get_fftview(centerr, zoomlevel, lofp);
cpgpage();
offsetf = plot_fftview(fv, maxpow, 1.0, 0.0, 0);
} else
printf(" Already at maximum zoom level (%d).\n", zoomlevel);
break;
case 'X': /* Zoom out */
case 'x':
case 'O':
case 'o':
if (DEBUGOUT)
printf(" Zooming out (zoomlevel = %d)...\n", zoomlevel);
if (zoomlevel > minzoom) {
zoomlevel--;
free(fv);
fv = get_fftview(centerr, zoomlevel, lofp);
cpgpage();
offsetf = plot_fftview(fv, maxpow, 1.0, 0.0, 0);
} else
printf(" Already at minimum zoom level (%d).\n", zoomlevel);
break;
case '<': /* Shift left 1 full screen */
centerr -= fv->numbins + fv->numbins / 8;
case ',': /* Shift left 1/8 screen */
if (DEBUGOUT)
printf(" Shifting left...\n");
centerr -= fv->numbins / 8;
{ /* Should probably get the previous chunk from the fftfile... */
double lowestr;
lowestr = 0.5 * fv->numbins;
if (centerr < lowestr)
centerr = lowestr;
}
free(fv);
fv = get_fftview(centerr, zoomlevel, lofp);
cpgpage();
offsetf = plot_fftview(fv, maxpow, 1.0, 0.0, 0);
break;
case '>': /* Shift right 1 full screen */
centerr += fv->numbins - fv->numbins / 8;
case '.': /* Shift right 1/8 screen */
if (DEBUGOUT)
printf(" Shifting right...\n");
centerr += fv->numbins / 8;
{ /* Should probably get the next chunk from the fftfile... */
double highestr;
highestr = lofp->rlo + lofp->numamps - 0.5 * fv->numbins;
if (centerr > highestr)
centerr = highestr;
}
free(fv);
fv = get_fftview(centerr, zoomlevel, lofp);
cpgpage();
offsetf = plot_fftview(fv, maxpow, 1.0, 0.0, 0);
break;
case '+': /* Increase height of powers */
case '=':
if (maxpow == 0.0) {
printf(" Auto-scaling is off.\n");
maxpow = 1.1 * fv->maxpow;
}
maxpow = 3.0 / 4.0 * maxpow;
cpgpage();
offsetf = plot_fftview(fv, maxpow, 1.0, 0.0, 0);
break;
case '-': /* Decrease height of powers */
case '_':
if (maxpow == 0.0) {
printf(" Auto-scaling is off.\n");
maxpow = 1.1 * fv->maxpow;
}
maxpow = 4.0 / 3.0 * maxpow;
cpgpage();
offsetf = plot_fftview(fv, maxpow, 1.0, 0.0, 0);
break;
case 'S': /* Auto-scale */
case 's':
if (maxpow == 0.0)
break;
else {
printf(" Auto-scaling is on.\n");
maxpow = 0.0;
cpgpage();
offsetf = plot_fftview(fv, maxpow, 1.0, 0.0, 0);
break;
}
case 'G': /* Goto a frequency */
case 'g':
{
char freqstr[50];
double freq = -1.0;
while (freq < 0.0) {
printf(" Enter the frequency (Hz) to go to:\n");
fgets(freqstr, 50, stdin);
freqstr[strlen(freqstr) - 1] = '\0';
freq = atof(freqstr);
}
offsetf = 0.0;
centerr = freq * T;
printf(" Moving to frequency %.15g.\n", freq);
free(fv);
fv = get_fftview(centerr, zoomlevel, lofp);
cpgpage();
offsetf = plot_fftview(fv, maxpow, 1.0, centerr, 2);
}
break;
case 'H': /* Show harmonics */
case 'h':
{
double retval;
retval = harmonic_loop(xid, centerr, zoomlevel, lofp);
if (retval > 0.0) {
offsetf = 0.0;
centerr = retval;
free(fv);
fv = get_fftview(centerr, zoomlevel, lofp);
cpgpage();
offsetf = plot_fftview(fv, maxpow, 1.0, centerr, 2);
}
}
break;
case '?': /* Print help screen */
print_help();
break;
case 'D': /* Show details about a selected point */
case 'd':
{
double newr;
printf(" Searching for peak near freq = %.7g Hz...\n", (inx + offsetf));
newr = find_peak(inx + offsetf, fv, lofp);
centerr = newr;
free(fv);
fv = get_fftview(centerr, zoomlevel, lofp);
cpgpage();
offsetf = plot_fftview(fv, maxpow, 1.0, centerr, 2);
}
break;
case 'L': /* Load a zaplist */
case 'l':
{
int ii, len;
char filename[200];
double *lobins, *hibins;
printf(" Enter the filename containing the zaplist to load:\n");
fgets(filename, 199, stdin);
len = strlen(filename) - 1;
filename[len] = '\0';
numzaplist = get_birdies(filename, T, 0.0, &lobins, &hibins);
lenzaplist = numzaplist + 20; /* Allow some room to add more */
if (lenzaplist)
free(zaplist);
zaplist = (bird *) malloc(sizeof(bird) * lenzaplist);
for (ii = 0; ii < numzaplist; ii++) {
zaplist[ii].lobin = lobins[ii];
zaplist[ii].hibin = hibins[ii];
}
vect_free(lobins);
vect_free(hibins);
printf("\n");
cpgpage();
offsetf = plot_fftview(fv, maxpow, 1.0, 0.0, 0);
}
break;
case 'Z': /* Add a birdie to a zaplist */
case 'z':
{
int badchoice = 2;
float lox, hix, loy, hiy;
double rs[2];
char choice;
if (numzaplist + 1 > lenzaplist) {
lenzaplist += 10;
zaplist = (bird *) realloc(zaplist, sizeof(bird) * lenzaplist);
}
cpgqwin(&lox, &hix, &loy, &hiy);
printf(" Click the left mouse button on the first frequency limit.\n");
while (badchoice) {
cpgcurs(&inx, &iny, &choice);
if (choice == 'A' || choice == 'a') {
rs[2 - badchoice] = ((double) inx + offsetf) * T;
cpgsave();
cpgsci(7);
cpgmove(inx, 0.0);
cpgdraw(inx, hiy);
cpgunsa();
badchoice--;
if (badchoice == 1)
printf
(" Click the left mouse button on the second frequency limit.\n");
} else {
printf(" Option not recognized.\n");
}
};
if (rs[1] > rs[0]) {
zaplist[numzaplist].lobin = rs[0];
zaplist[numzaplist].hibin = rs[1];
} else {
zaplist[numzaplist].lobin = rs[1];
zaplist[numzaplist].hibin = rs[0];
}
printf(" The new birdie has: f_avg = %.15g f_width = %.15g\n\n",
0.5 * (zaplist[numzaplist].hibin + zaplist[numzaplist].lobin) / T,
(zaplist[numzaplist].hibin - zaplist[numzaplist].lobin) / T);
numzaplist++;
qsort(zaplist, numzaplist, sizeof(bird), compare_birds);
cpgpage();
offsetf = plot_fftview(fv, maxpow, 1.0, 0.0, 0);
}
break;
case 'P': /* Print the current plot */
case 'p':
{
int len;
char filename[200];
printf(" Enter the filename to save the plot as:\n");
fgets(filename, 196, stdin);
len = strlen(filename) - 1;
filename[len + 0] = '/';
filename[len + 1] = 'P';
filename[len + 2] = 'S';
filename[len + 3] = '\0';
psid = cpgopen(filename);
cpgslct(psid);
cpgpap(10.25, 8.5 / 11.0);
cpgiden();
cpgscr(15, 0.8, 0.8, 0.8);
offsetf = plot_fftview(fv, maxpow, 1.0, 0.0, 0);
cpgclos();
cpgslct(xid);
cpgscr(15, 0.4, 0.4, 0.4);
filename[len] = '\0';
printf(" Wrote the plot to the file '%s'.\n", filename);
}
break;
case 'N': /* Changing power normalization */
case 'n':
{
float inx2 = 0.0, iny2 = 0.0;
char choice;
unsigned char badchoice = 1;
printf(" Specify the type of power normalization:\n"
" m,M : Median values determined locally\n"
" d,D : DC frequency amplitude\n"
" r,R : Raw powers (i.e. no normalization)\n"
" u,U : User specified interval (the average powers)\n");
while (badchoice) {
cpgcurs(&inx2, &iny2, &choice);
switch (choice) {
case 'M':
case 'm':
norm_const = 0.0;
maxpow = 0.0;
badchoice = 0;
printf
(" Using local median normalization. Autoscaling is on.\n");
break;
case 'D':
case 'd':
norm_const = 1.0 / r0;
maxpow = 0.0;
badchoice = 0;
printf
(" Using DC frequency (%f) normalization. Autoscaling is on.\n",
r0);
break;
case 'R':
case 'r':
norm_const = 1.0;
maxpow = 0.0;
badchoice = 0;
printf
(" Using raw powers (i.e. no normalization). Autoscaling is on.\n");
break;
case 'U':
case 'u':
{
char choice2;
float xx = inx, yy = iny;
int lor, hir, numr;
double avg, var;
printf
(" Use the left mouse button to select a left and right boundary\n"
" of a region to calculate the average power.\n");
do {
cpgcurs(&xx, &yy, &choice2);
} while (choice2 != 'A' && choice2 != 'a');
lor = (int) ((xx + offsetf) * T);
cpgsci(7);
cpgmove(xx, 0.0);
cpgdraw(xx, 10.0 * fv->maxpow);
do {
cpgcurs(&xx, &yy, &choice2);
} while (choice2 != 'A' && choice2 != 'a');
hir = (int) ((xx + offsetf) * T);
cpgmove(xx, 0.0);
cpgdraw(xx, 10.0 * fv->maxpow);
cpgsci(1);
if (lor > hir) {
int tempr;
tempr = hir;
hir = lor;
lor = tempr;
}
numr = hir - lor + 1;
avg_var(lofp->rawpowers + lor - lofp->rlo, numr, &avg, &var);
printf(" Selection has: average = %.5g\n"
" std dev = %.5g\n", avg, sqrt(var));
norm_const = 1.0 / avg;
maxpow = 0.0;
badchoice = 0;
printf
(" Using %.5g as the normalization constant. Autoscaling is on.\n",
avg);
break;
}
default:
printf(" Unrecognized choice '%c'.\n", choice);
break;
}
}
free(fv);
fv = get_fftview(centerr, zoomlevel, lofp);
cpgpage();
offsetf = plot_fftview(fv, maxpow, 1.0, 0.0, 0);
}
break;
case 'Q': /* Quit */
case 'q':
printf(" Quitting...\n");
free(fv);
cpgclos();
break;
default:
printf(" Unrecognized option '%c'.\n", inchar);
break;
}
} while (inchar != 'Q' && inchar != 'q');
free_fftpart(lofp);
#ifdef USEMMAP
close(mmap_file);
#else
fclose(fftfile);
#endif
if (lenzaplist)
free(zaplist);
printf("Done\n\n");
return 0;
}
int main(int argc,char *argv[])
{
int i;
char fname[128];
dSet *data;
float freq,bw,chanbw;
int nchan,npol;
float bpass[4096];
float fx[4096];
float miny,maxy,minx,maxx;
float ominy,omaxy,ominx,omaxx;
float mx,my,mx2,my2;
float binw;
char key;
char grDev[128]="/xs";
int interactive=1;
int noc1=0;
int zapChannels[4096];
int nzap=0;
int overlay=-1;
float overlayVal[MAX_OVERLAY];
char overlayStr[MAX_OVERLAY][128];
char overlayFile[128];
int noverlay=0;
fitsfile *fp;
data = initialiseDset();
for (i=0;i<argc;i++)
{
if (strcmp(argv[i],"-f")==0)
strcpy(fname,argv[++i]);
else if (strcmp(argv[i],"-noc1")==0)
noc1=1;
else if (strcmp(argv[i],"-g")==0)
{
strcpy(grDev,argv[++i]);
interactive=0;
}
else if (strcmp(argv[i],"-h")==0)
help();
else if (strcmp(argv[i],"-overlay")==0)
{
strcpy(overlayFile,argv[++i]);
overlay=1;
}
}
if (overlay==1)
{
FILE *fin;
char line[1024];
noverlay=0;
if (!(fin = fopen(overlayFile,"r")))
printf("Unable to open overlay file >%s<\n",overlayFile);
else
{
while (!feof(fin))
{
fgets(overlayStr[noverlay],1024,fin);
if (fscanf(fin,"%f",&overlayVal[noverlay])==1)
{
if (overlayStr[noverlay][strlen(overlayStr[noverlay])-1] == '\n')
overlayStr[noverlay][strlen(overlayStr[noverlay])-1]='\0';
noverlay++;
}
}
fclose(fin);
}
}
fp = openFitsFile(fname);
loadPrimaryHeader(fp,data);
displayHeaderInfo(data);
readBandpass(fp,bpass);
nchan = data->phead.nchan;
freq = data->phead.freq;
bw = data->phead.bw;
chanbw = data->phead.chanbw;
for (i=0;i<nchan;i++)
{
fx[i] = freq-bw/2+(i+0.5)*chanbw;
if (i==noc1)
{
miny = maxy = bpass[i];
minx = maxx = fx[i];
}
else if (i!=0)
{
if (bpass[i] > maxy) maxy = bpass[i];
if (bpass[i] < miny) miny = bpass[i];
if (fx[i] > maxx) maxx = fx[i];
if (fx[i] < minx) minx = fx[i];
}
}
ominx = minx;
omaxx = maxx;
ominy = miny;
omaxy = maxy;
binw = fx[1]-fx[0];
printf("Complete\n");
cpgbeg(0,grDev,1,1);
cpgask(0);
do {
cpgenv(minx,maxx,miny,maxy,0,1);
cpglab("Frequency (MHz)","Amplitude (arbitrary)",fname);
cpgbin(nchan-noc1,fx+noc1,bpass+noc1,0);
if (overlay==1)
{
float tx[2],ty[2];
cpgsls(4); cpgsci(2); cpgsch(0.8);
for (i=0;i<noverlay;i++)
{
tx[0] = tx[1] = overlayVal[i];
ty[0] = miny;
ty[1] = maxy;
if (tx[1] > minx && tx[1] < maxx)
{
cpgline(2,tx,ty);
// cpgtext(tx[1],ty[1]-0.05*(maxy-miny),overlayStr[i]);
cpgptxt(tx[1]-0.004*(maxx-minx),ty[0]+0.05*(maxy-miny),90,0.0,overlayStr[i]);
}
}
cpgsci(1); cpgsls(1); cpgsch(1);
}
if (interactive==1)
{
cpgcurs(&mx,&my,&key);
if (key=='A')
{
int cc=-1;
int i;
for (i=0;i<nchan-1;i++)
{
// if ((bw > 0 && (mx > fx[i]-binw/2 && mx < fx[i]+binw/2)) ||
// (bw < 0 && (mx > fx[i]+binw/2 && mx < fx[i]-binw/2)))
if ((bw > 0 && (mx > fx[i] && mx < fx[i]+binw)) ||
(bw < 0 && (mx > fx[i] && mx < fx[i]+binw)))
{
cc = i;
break;
}
}
printf("mouse x = %g MHz, mouse y = %g, channel = %d, channel frequency = %g MHz\n",mx,my,cc,fx[cc]);
}
else if (key=='X')
{
int cc=-1;
int i;
printf("Deleting %g %g %g\n",mx,fx[10],binw);
for (i=0;i<nchan-1;i++)
{
// if ((bw > 0 && (mx > fx[i]-binw/2 && mx < fx[i]+binw/2)) ||
// (bw < 0 && (mx > fx[i]+binw/2 && mx < fx[i]-binw/2)))
if ((bw > 0 && (mx > fx[i] && mx < fx[i]+binw)) ||
(bw < 0 && (mx > fx[i] && mx < fx[i]+binw)))
{
cc = i;
break;
}
}
printf("Want to delete = %d\n",cc);
if (cc != -1)
{
bpass[cc] = 0;
omaxy = bpass[noc1];
zapChannels[nzap++] = cc;
for (i=noc1;i<nchan;i++)
{
if (omaxy < bpass[i]) omaxy = bpass[i];
}
}
}
else if (key=='z')
{
cpgband(2,0,mx,my,&mx2,&my2,&key);
if (mx > mx2) {maxx = mx; minx = mx2;}
else {maxx = mx2; minx = mx;}
if (my > my2) {maxy = my; miny = my2;}
else {maxy = my2; miny = my;}
}
else if (key=='u')
{
minx = ominx;
maxx = omaxx;
miny = ominy;
maxy = omaxy;
}
else if (key=='l') // List the channels and frequencies to zap
{
int i;
sortInt(zapChannels,nzap);
printf("-------------------------------------------------------\n");
printf("Zap channels with first channel = 0\n\n");
for (i=0;i<nzap;i++)
printf("%d ",zapChannels[i]);
printf("\n\n");
printf("Zap channels with first channel = 1\n\n");
for (i=0;i<nzap;i++)
printf("%d ",zapChannels[i]+1);
printf("\n\n");
printf("Zap channels frequencies:\n\n");
for (i=0;i<nzap;i++)
printf("%g ",fx[zapChannels[i]]);
printf("\n\n");
printf("-------------------------------------------------------\n");
}
else if (key=='%') // Enter percentage of the band edges to zap
{
float percent;
int i;
printf("Enter band edge percentage to zap ");
scanf("%f",&percent);
for (i=0;i<nchan;i++)
{
if (i < nchan*percent/100.0 || i > nchan-(nchan*percent/100.0))
{
bpass[i] = 0;
zapChannels[nzap++] = i;
}
}
omaxy = bpass[noc1];
for (i=noc1;i<nchan;i++)
{
if (omaxy < bpass[i]) omaxy = bpass[i];
}
// Unzoom
minx = ominx;
maxx = omaxx;
miny = ominy;
maxy = omaxy;
}
}
} while (key != 'q' && interactive==1);
cpgend();
}
static double harmonic_loop(int xid, double rr, int zoomlevel, fftpart * fp)
{
float inx = 0.0, iny = 0.0;
double retval = 0.0;
int xid2, psid, badchoice = 1;
char choice;
xid2 = cpgopen("/XWIN");
cpgpap(10.25, 8.5 / 11.0);
cpgask(0);
cpgslct(xid2);
plot_harmonics(rr, zoomlevel, fp);
printf(" Click on the harmonic to go it,\n"
" press 'P' to print, or press 'Q' to close.\n");
while (badchoice) {
cpgcurs(&inx, &iny, &choice);
if (choice == 'Q' || choice == 'q') {
badchoice = 0;
} else if (choice == 'P' || choice == 'p') {
int len, numharmbins;
double offsetf;
char filename[200];
fftpart *harmpart;
fftview *harmview;
printf(" Enter the filename to save the plot as:\n");
fgets(filename, 195, stdin);
len = strlen(filename) - 1;
strcpy(filename + len, "/CPS");
psid = cpgopen(filename);
cpgslct(psid);
cpgpap(10.25, 8.5 / 11.0);
cpgiden();
cpgscr(15, 0.8, 0.8, 0.8);
numharmbins = (1 << (LOGDISPLAYNUM - zoomlevel));
harmpart = get_fftpart((int) (rr - numharmbins), 2 * numharmbins);
harmview = get_fftview(rr, zoomlevel, harmpart);
free_fftpart(harmpart);
offsetf = plot_fftview(harmview, 0.0, 1.0, rr, 2);
cpgpage();
plot_harmonics(rr, zoomlevel, fp);
cpgclos();
cpgslct(xid2);
cpgscr(15, 0.4, 0.4, 0.4);
filename[len] = '\0';
printf(" Wrote the plot to the file '%s'.\n", filename);
} else if (choice == 'A' || choice == 'a') {
if (iny > 1.0)
retval = rr * (int) (inx);
else if (iny > 0.0)
retval = rr * ((int) (inx) + 4.0);
else if (iny > -1.0)
retval = rr / (int) (inx);
else
retval = rr / ((int) (inx) + 4.0);
badchoice = 0;
} else {
printf(" Option not recognized.\n");
}
};
cpgclos();
cpgslct(xid);
return retval;
}
int main(int argc, char **argv)
{
char alt = '\0', *header, idents[3][80], *infile, keyword[16], nlcprm[1],
opt[2], pgdev[16];
int c0[] = {-1, -1, -1, -1, -1, -1, -1};
int alts[27], gcode[2], hdunum = 1, hdutype, i, ic, naxes, naxis[2],
nkeyrec, nreject, nwcs, stat[NWCSFIX], status;
float blc[2], trc[2];
double cache[257][4], grid1[3], grid2[3], nldprm[1];
struct wcsprm *wcs;
nlfunc_t pgwcsl_;
fitsfile *fptr;
/* Parse options. */
strcpy(pgdev, "/XWINDOW");
for (i = 1; i < argc && argv[i][0] == '-'; i++) {
if (!argv[i][1]) break;
switch (argv[i][1]) {
case 'a':
alt = toupper(argv[i][2]);
break;
case 'd':
if (argv[i][2] == '?') {
cpgldev();
return 0;
}
if (argv[i][2] == '/') {
strncpy(pgdev+1, argv[i]+3, 15);
} else {
strncpy(pgdev+1, argv[i]+2, 15);
}
break;
case 'h':
hdunum = atoi(argv[i]+2);
break;
default:
fprintf(stderr, "%s", usage);
return 1;
}
}
if (i < argc) {
infile = argv[i++];
if (i < argc) {
fprintf(stderr, "%s", usage);
return 1;
}
} else {
infile = "-";
}
/* Check accessibility of the input file. */
if (strcmp(infile, "-") && access(infile, R_OK) == -1) {
printf("wcsgrid: Cannot access %s.\n", infile);
return 1;
}
/* Open the FITS file and move to the required HDU. */
status = 0;
if (fits_open_file(&fptr, infile, READONLY, &status)) goto fitserr;
if (fits_movabs_hdu(fptr, hdunum, &hdutype, &status)) goto fitserr;
if (hdutype != IMAGE_HDU) {
fprintf(stderr, "ERROR, HDU number %d does not contain an image array.\n",
hdunum);
return 1;
}
/* Check that we have at least two image axes. */
if (fits_read_key(fptr, TINT, "NAXIS", &naxes, NULL, &status)) {
goto fitserr;
}
if (naxes < 2) {
fprintf(stderr, "ERROR, HDU number %d does not contain a 2-D image.\n",
hdunum);
return 1;
} else if (naxes > 2) {
printf("HDU number %d contains a %d-D image array.\n", hdunum, naxes);
}
/* Read in the FITS header, excluding COMMENT and HISTORY keyrecords. */
if (fits_hdr2str(fptr, 1, NULL, 0, &header, &nkeyrec, &status)) {
goto fitserr;
}
/* Interpret the WCS keywords. */
if ((status = wcspih(header, nkeyrec, WCSHDR_all, -3, &nreject, &nwcs,
&wcs))) {
fprintf(stderr, "wcspih ERROR %d: %s.\n", status, wcshdr_errmsg[status]);
return 1;
}
free(header);
/* Read -TAB arrays from the binary table extension (if necessary). */
if (fits_read_wcstab(fptr, wcs->nwtb, (wtbarr *)wcs->wtb, &status)) {
goto fitserr;
}
/* Translate non-standard WCS keyvalues. */
if ((status = wcsfix(7, 0, wcs, stat))) {
status = 0;
for (i = 0; i < NWCSFIX; i++) {
if (stat[i] > 0) {
fprintf(stderr, "wcsfix ERROR %d: %s.\n", stat[i],
wcsfix_errmsg[stat[i]]);
/* Ignore problems with CDi_ja and DATE-OBS. */
if (!(i == CDFIX || i == DATFIX)) status = 1;
}
}
if (status) return 1;
}
/* Sort out alternates. */
if (alt) {
wcsidx(nwcs, &wcs, alts);
if (alt == ' ') {
if (alts[0] == -1) {
fprintf(stderr, "WARNING, no primary coordinate representation, "
"doing all.\n");
alt = '\0';
}
} else if (alt < 'A' || alt > 'Z') {
fprintf(stderr, "WARNING, alternate specifier \"%c\" is invalid, "
"doing all.\n", alt);
alt = '\0';
} else {
if (alts[alt - 'A' + 1] == -1) {
fprintf(stderr, "WARNING, no alternate coordinate representation "
"\"%c\", doing all.\n", alt);
alt = '\0';
}
}
}
/* Get image dimensions from the header. */
sprintf(keyword, "NAXIS%d", wcs->lng + 1);
fits_read_key(fptr, TINT, "NAXIS1", naxis, NULL, &status);
sprintf(keyword, "NAXIS%d", wcs->lat + 1);
fits_read_key(fptr, TINT, "NAXIS2", naxis+1, NULL, &status);
if ((naxis[0] < 2) || (naxis[1] < 2)) {
fprintf(stderr, "ERROR, HDU number %d contains degenerate image axes.\n",
hdunum);
return 1;
}
fits_close_file(fptr, &status);
/* Plot setup. */
blc[0] = 0.5f;
blc[1] = 0.5f;
trc[0] = naxis[0] + 0.5f;
trc[1] = naxis[1] + 0.5f;
if (cpgbeg(0, pgdev, 1, 1) != 1) {
fprintf(stderr, "ERROR, failed to open PGPLOT device %s.\n", pgdev);
return 1;
}
cpgvstd();
cpgwnad(blc[0], trc[0], blc[0], trc[1]);
cpgask(1);
cpgpage();
/* Compact lettering. */
cpgsch(0.8f);
/* Draw full grid lines. */
gcode[0] = 2;
gcode[1] = 2;
grid1[0] = 0.0;
grid2[0] = 0.0;
/* These are for the projection boundary. */
grid1[1] = -180.0;
grid1[2] = 180.0;
grid2[1] = -90.0;
grid2[2] = 90.0;
cpgsci(1);
for (i = 0; i < nwcs; i++) {
if (alt && (wcs+i)->alt[0] != alt) {
continue;
}
if ((status = wcsset(wcs+i))) {
fprintf(stderr, "wcsset ERROR %d: %s.\n", status, wcs_errmsg[status]);
continue;
}
/* Draw the frame. */
cpgbox("BC", 0.0f, 0, "BC", 0.0f, 0);
/* Axis labels; use CNAMEia in preference to CTYPEia. */
if ((wcs+i)->cname[0][0]) {
strcpy(idents[0], (wcs+i)->cname[0]);
} else {
strcpy(idents[0], (wcs+i)->ctype[0]);
}
if ((wcs+i)->cname[1][0]) {
strcpy(idents[1], (wcs+i)->cname[1]);
} else {
strcpy(idents[1], (wcs+i)->ctype[1]);
}
/* Title; use WCSNAME. */
strcpy(idents[2], (wcs+i)->wcsname);
if (strlen(idents[2])) {
printf("\n%s\n", idents[2]);
}
/* Formatting control for celestial coordinates. */
if (strncmp((wcs+i)->ctype[0], "RA", 2) == 0) {
/* Right ascension in HMS, declination in DMS. */
opt[0] = 'G';
opt[1] = 'E';
} else {
/* Other angles in decimal degrees. */
opt[0] = 'A';
opt[1] = 'B';
}
/* Draw the celestial grid. The grid density is set for each world */
/* coordinate by specifying LABDEN = 1224. */
ic = -1;
cpgsbox(blc, trc, idents, opt, 0, 1224, c0, gcode, 0.0, 0, grid1, 0,
grid2, 0, pgwcsl_, 1, WCSLEN, 1, nlcprm, (int *)(wcs+i), nldprm, 256,
&ic, cache, &status);
/* Delimit the projection boundary. */
if ((wcs+i)->cel.prj.category != ZENITHAL) {
/* Reset to the native coordinate graticule. */
(wcs+i)->crval[0] = (wcs+i)->cel.prj.phi0;
(wcs+i)->crval[1] = (wcs+i)->cel.prj.theta0;
(wcs+i)->lonpole = 999.0;
(wcs+i)->latpole = 999.0;
status = wcsset(wcs+i);
ic = -1;
cpgsbox(blc, trc, idents, opt, -1, 0, c0, gcode, 0.0, 2, grid1, 2,
grid2, 0, pgwcsl_, 1, WCSLEN, 1, nlcprm, (int *)(wcs+i), nldprm, 256,
&ic, cache, &status);
}
cpgpage();
}
status = wcsvfree(&nwcs, &wcs);
return 0;
fitserr:
fits_report_error(stderr, status);
fits_close_file(fptr, &status);
return 1;
}
void doPlot(pulsar *psr,int npsr,float *scale,int nScale,char *grDev,int plotUs,float fontSize,float centreMJD,int ptStyle,float ptSize,int error,float minyv,float maxyv,float minxv,float maxxv,int nOverlay,float labelsize,float fracX)
{
int i,j,fitFlag=2,exitFlag=0,scale1=0,scale2,count[MAX_PSR],p,xautoscale=0,k,graphics=1;
int yautoscale=0,plotpre=1;
int ps,pe,pi;
int time=0;
char xstr[1000],ystr[1000];
float px[2],py[2],pye1[2],pye2[2];
float x[MAX_PSR][MAX_OBSN],y[MAX_PSR][MAX_OBSN],yerr1[MAX_PSR][MAX_OBSN],yerr2[MAX_PSR][MAX_OBSN],tmax,tmin,tmaxy1,tminy1,tmaxy2,tminy2;
float sminy[MAX_PSR],smaxy[MAX_PSR];
float minx[MAX_PSR],maxx[MAX_PSR],miny[MAX_PSR],maxy[MAX_PSR],plotx1,plotx2,ploty1,ploty2,mean;
float fx[2],fy[2];
float mouseX,mouseY;
char key;
// float widthPap=0.0,aspectPap=0.618;
float widthPap=0.0,aspectPap=1;
float xx[MAX_OBSN],yy[MAX_OBSN],yyerr1[MAX_OBSN],yyerr2[MAX_OBSN];
int num=0,colour;
/* Obtain a graphical PGPLOT window */
cpgbeg(0,grDev,1,1);
// cpgpap(widthPap,aspectPap);
cpgsch(fontSize);
cpgscf(2);
cpgslw(2);
cpgask(0);
for (p=0;p<npsr;p++)
{
scale2 = psr[p].nobs;
/* sprintf(xstr,"MJD-%.1Lf",psr[0].param[param_pepoch].val[0]); */
if (centreMJD == -1)
sprintf(xstr,"Year");
else
sprintf(xstr,"MJD-%.1f",centreMJD);
sprintf(ystr,"Residual (\\gmsec)");
count[p]=0;
printf("points = %d\n",psr[p].nobs);
for (i=0;i<psr[p].nobs;i++)
{
if (psr[p].obsn[i].deleted == 0 &&
(psr[p].param[param_start].paramSet[0]!=1 || psr[p].param[param_start].fitFlag[0]!=1 ||
psr[p].param[param_start].val[0] < psr[p].obsn[i].bat) &&
(psr[p].param[param_finish].paramSet[0]!=1 || psr[p].param[param_finish].fitFlag[0]!=1 ||
psr[p].param[param_finish].val[0] > psr[p].obsn[i].bat))
{
/* x[p][count[p]] = (double)(psr[p].obsn[i].bat-psr[0].param[param_pepoch].val[0]); */
if (centreMJD == -1)
x[p][count[p]] = calcYr(psr[p].obsn[i].bat);
else
x[p][count[p]] = (double)(psr[p].obsn[i].bat-centreMJD);
y[p][count[p]] = (double)psr[p].obsn[i].residual*1.0e6;
if (nScale>0)
y[p][count[p]] *= scale[p];
count[p]++;
}
}
/* Remove mean from the residuals and calculate error bars */
mean = findMean(y[p],psr,p,scale1,count[p]);
count[p]=0;
for (i=0;i<psr[p].nobs;i++)
{
if (psr[p].obsn[i].deleted==0 &&
(psr[p].param[param_start].paramSet[0]!=1 || psr[p].param[param_start].fitFlag[0]!=1 ||
psr[p].param[param_start].val[0] < psr[p].obsn[i].bat) &&
(psr[p].param[param_finish].paramSet[0]!=1 || psr[p].param[param_finish].fitFlag[0]!=1 ||
psr[p].param[param_finish].val[0] > psr[p].obsn[i].bat))
{
psr[p].obsn[i].residual-=mean/1.0e6;
y[p][count[p]]-=mean;
yerr1[p][count[p]] = y[p][count[p]]-(float)psr[p].obsn[i].toaErr;
yerr2[p][count[p]] = y[p][count[p]]+(float)psr[p].obsn[i].toaErr;
count[p]++;
}
}
/* Get scaling for graph */
if (minxv == maxxv) {
minx[p] = findMin(x[p],psr,p,scale1,count[p]);
maxx[p] = findMax(x[p],psr,p,scale1,count[p]);
}
else {
minx[p] = minxv;
maxx[p] = maxxv;
}
if (minyv == maxyv){
miny[p] = findMin(y[p],psr,p,scale1,count[p]);
maxy[p] = findMax(y[p],psr,p,scale1,count[p]);
}
else {
miny[p] = minyv;
maxy[p] = maxyv;
}
sminy[p] = miny[p]/1e6;
smaxy[p] = maxy[p]/1e6;
}
for (p=0;p<npsr;p++)
{
for (i=0;i<count[p];i++)
{
y[p][i] = (y[p][i]-miny[p])/(maxy[p]-miny[p]);
yerr1[p][i] = (yerr1[p][i]-miny[p])/(maxy[p]-miny[p]);
yerr2[p][i] = (yerr2[p][i]-miny[p])/(maxy[p]-miny[p]);
}
// maxy[p] = 1.0;
// miny[p] = 0.0;
}
tmin = findMinVal(minx,npsr);
tmax = findMaxVal(maxx,npsr);
tminy2 = 0.0; //findMinVal(miny,npsr);
tmaxy2 = 1.0; //findMaxVal(maxy,npsr);
plotx1 = tmin-(tmax-tmin)*0.1;
plotx2 = tmax+(tmax-tmin)*0.1;
// ploty1 = tminy2-(tmaxy2-tminy2)*0.1;
// ploty2 = tmaxy2+(tmaxy2-tminy2)*0.1;
ploty1 = 0.1;
ploty2 = 0.9;
for (p=0;p<npsr;p++)
{
for (i=0;i<count[p];i++)
{
y[p][i]=(p)+ploty1+y[p][i]*(ploty2-ploty1);
yerr1[p][i]=(p)+ploty1+yerr1[p][i]*(ploty2-ploty1);
yerr2[p][i]=(p)+ploty1+yerr2[p][i]*(ploty2-ploty1);
}
}
printf("ytick = %g\n",ploty2-ploty1);
/* cpgenv(plotx1,plotx2,ploty1,ploty2+(ploty2-ploty1)*(npsr-1),0,0); */
// cpgenv(plotx1,plotx2,0,npsr+1,0,-1);
if (labelsize!=-1)
cpgsch(labelsize);
cpgsvp(fracX,1.0,0.1,1.0);
cpgswin(0,1,0,npsr);
cpgbox("ABC",0.0,0,"C",0.0,0);
cpgsch(fontSize);
char str[1000];
for (p=0;p<npsr;p++)
{
cpgsch(fontSize);
// cpgtext(tmax+(tmax-tmin)*0.05,p+1.5-0.5,psr[p].name);
cpgtext(0,p+0.6,psr[p].name);
// cpgsch(fontSize);
if (plotUs==0)
{
sprintf(str,"%.2f",(double)((smaxy[p]-sminy[p])*psr[p].param[param_f].val[0]));
cpgtext(0,p+0.4,str);
// cpgtext(tmax+(tmax-tmin)*0.05,p+1.1-0.5,str);
}
else
{
sprintf(str,"%.2f\\gms",(double)((smaxy[p]-sminy[p])/1e-6));
// cpgtext(tmax+(tmax-tmin)*0.05,p+1.1-0.5,str);
cpgtext(0,p+0.1,str);
}
cpgsch(1);
px[0] = 0;
// px[1] = tmax; //+(tmax-tmin)*0.03;
px[1] = 1;
py[0] = p;
py[1] = p;
cpgline(2,px,py);
}
if (labelsize!=-1)
cpgsch(labelsize);
cpgsvp(0.1,fracX,0.1,1.0);
cpgswin(plotx1,plotx2,0,npsr);
cpgbox("ATNSBC",0.0,0,"B",0.0,0);
cpglab(xstr,"","");
cpgsch(fontSize);
for (p=0;p<npsr;p++)
{
cpgsls(1);
px[0] = plotx1;
// px[1] = tmax; //+(tmax-tmin)*0.03;
px[1] = plotx2;
py[0] = p;
py[1] = p;
cpgline(2,px,py);
cpgsls(4);
px[0] = tmin;
px[1] = tmax+(tmax-tmin)*0.03;
py[0]=py[1] =(p)+ploty1+(-miny[p]/(maxy[p]-miny[p]))*(ploty2-ploty1);
// py[0]=py[1] = (p)+ploty1;
// py[0] = py[1] = (0-miny[p])/(maxy[p]-miny[p])/(ploty2-ploty1)+p;
cpgline(2,px,py);
px[0] = plotx1+0.005*(plotx2-plotx1);
py[0] = p;
pye1[0] = p + 5/(ploty2-ploty1);
pye2[0] = p - 5/(ploty2-ploty1);
cpgsls(1);
cpgsch(3);
// cpgerry(1,px,pye1,pye2,1);
cpgsch(1);
for (colour=0;colour<5;colour++)
{
num=0;
for (i=0;i<count[p];i++)
{
if ((colour==0 && psr[p].obsn[i].freq<=500) ||
(colour==1 && psr[p].obsn[i].freq>500 && psr[p].obsn[i].freq<=1000) ||
(colour==2 && psr[p].obsn[i].freq>1000 && psr[p].obsn[i].freq<=1500) ||
(colour==3 && psr[p].obsn[i].freq>1500 && psr[p].obsn[i].freq<=3300) ||
(colour==4 && psr[p].obsn[i].freq>3300))
{
xx[num]=x[p][i];
yy[num]=y[p][i];
yyerr1[num]=yerr1[p][i];
yyerr2[num]=yerr2[p][i];
// printf("plotting: %g\n",yy[num]);
num++;
}
}
cpgsci(colour+1);
cpgsch(ptSize);
cpgpt(num,xx,yy,ptStyle);
if (error==1)
cpgerry(num,xx,yyerr1,yyerr2,1);
cpgsch(fontSize);
// Plot arrow giving one period
fx[0] = fx[1] = tmin-(tmax-tmin)*0.05;
// fy[0] = (p+1)+0.5-(float)(1.0/psr[p].param[param_f].val[0])/2.0/(ploty2-ploty1);
// fy[1] = (p+1)+0.5+(float)(1.0/psr[p].param[param_f].val[0])/2.0/(ploty2-ploty1);
// fy[0] = (-(float)(1.0/psr[p].param[param_f].val[0])/2.0/1.0e6 - miny[p])/(maxy[p]-miny[p])/(ploty2-ploty1) + (p+1)+0.5;
// fy[1] = ((float)(1.0/psr[p].param[param_f].val[0])/2.0/1.0e6 - miny[p])/(maxy[p]-miny[p])/(ploty2-ploty1) + (p+1)+0.5;
fy[0] = (p+1)+0.5+(float)(1.0/psr[p].param[param_f].val[0])/2.0/(maxy[p]-miny[p])*1e6;
fy[1] = (p+1)+0.5-(float)(1.0/psr[p].param[param_f].val[0])/2.0/(maxy[p]-miny[p])*1e6;
if (fy[0] > (p+1)+1) fy[0] = (p+1)+1;
if (fy[1] < (p+1)) fy[1] = (p+1);
// cpgsls(1); cpgline(2,fx,fy); cpgsls(1);
}
cpgsci(1);
}
cpgend();
}
int main()
{
char text[80];
int naxisj, nFail = 0, status;
double cdeltX, crpixj, crvalX, restfrq, restwav, x1, x2;
printf(
"Testing closure of WCSLIB spectral transformation routines (tspc.c)\n"
"-------------------------------------------------------------------\n");
/* List status return messages. */
printf("\nList of spc status return values:\n");
for (status = 1; status <= 4; status++) {
printf("%4d: %s.\n", status, spc_errmsg[status]);
}
/* PGPLOT initialization. */
strcpy(text, "/xwindow");
cpgbeg(0, text, 1, 1);
naxisj = NSPEC;
crpixj = naxisj/2 + 1;
restfrq = 1420.40595e6;
restwav = C/restfrq;
x1 = 1.0e9;
x2 = 2.0e9;
cdeltX = (x2 - x1)/(naxisj - 1);
crvalX = x1 + (crpixj - 1.0)*cdeltX;
printf("\nLinear frequency axis, span: %.1f to %.1f (GHz), step: %.3f "
"(kHz)\n---------------------------------------------------------"
"-----------------\n", x1*1e-9, x2*1e-9, cdeltX*1e-3);
nFail += closure("WAVE-F2W", 0.0, 0.0, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("VOPT-F2W", 0.0, restwav, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("ZOPT-F2W", 0.0, restwav, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("AWAV-F2A", 0.0, 0.0, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("VELO-F2V", restfrq, 0.0, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("BETA-F2V", restfrq, 0.0, naxisj, crpixj, cdeltX, crvalX);
restwav = 700.0e-9;
restfrq = C/restwav;
x1 = 300.0e-9;
x2 = 900.0e-9;
cdeltX = (x2 - x1)/(naxisj - 1);
crvalX = x1 + (crpixj - 1.0)*cdeltX;
printf("\nLinear vacuum wavelength axis, span: %.0f to %.0f (nm), "
"step: %f (nm)\n---------------------------------------------"
"-----------------------------\n", x1*1e9, x2*1e9, cdeltX*1e9);
nFail += closure("FREQ-W2F", 0.0, 0.0, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("AFRQ-W2F", 0.0, 0.0, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("ENER-W2F", 0.0, 0.0, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("WAVN-W2F", 0.0, 0.0, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("VRAD-W2F", restfrq, 0.0, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("AWAV-W2A", 0.0, 0.0, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("VELO-W2V", 0.0, restwav, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("BETA-W2V", 0.0, restwav, naxisj, crpixj, cdeltX, crvalX);
printf("\nLinear air wavelength axis, span: %.0f to %.0f (nm), "
"step: %f (nm)\n------------------------------------------"
"--------------------------------\n", x1*1e9, x2*1e9, cdeltX*1e9);
nFail += closure("FREQ-A2F", 0.0, 0.0, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("AFRQ-A2F", 0.0, 0.0, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("ENER-A2F", 0.0, 0.0, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("WAVN-A2F", 0.0, 0.0, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("VRAD-A2F", restfrq, 0.0, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("WAVE-A2W", 0.0, 0.0, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("VOPT-A2W", 0.0, restwav, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("ZOPT-A2W", 0.0, restwav, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("VELO-A2V", 0.0, restwav, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("BETA-A2V", 0.0, restwav, naxisj, crpixj, cdeltX, crvalX);
restfrq = 1420.40595e6;
restwav = C/restfrq;
x1 = -0.96*C;
x2 = 0.96*C;
cdeltX = (x2 - x1)/(naxisj - 1);
crvalX = x1 + (crpixj - 1.0)*cdeltX;
printf("\nLinear velocity axis, span: %.0f to %.0f m/s, step: %.0f "
"(m/s)\n------------------------------------------------------"
"--------------------\n", x1, x2, cdeltX);
nFail += closure("FREQ-V2F", restfrq, 0.0, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("AFRQ-V2F", restfrq, 0.0, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("ENER-V2F", restfrq, 0.0, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("WAVN-V2F", restfrq, 0.0, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("VRAD-V2F", restfrq, 0.0, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("WAVE-V2W", 0.0, restwav, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("VOPT-V2W", 0.0, restwav, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("ZOPT-V2W", 0.0, restwav, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("AWAV-V2A", 0.0, restwav, naxisj, crpixj, cdeltX, crvalX);
restwav = 650.0e-9;
restfrq = C/restwav;
x1 = 300e-9;
x2 = 1000e-9;
cdeltX = (x2 - x1)/(naxisj - 1);
crvalX = x1 + (crpixj - 1.0)*cdeltX;
printf("\nVacuum wavelength grism axis, span: %.0f to %.0f (nm), "
"step: %f (nm)\n--------------------------------------------"
"------------------------------\n", x1*1e9, x2*1e9, cdeltX*1e9);
nFail += closure("FREQ-GRI", 0.0, 0.0, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("AFRQ-GRI", 0.0, 0.0, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("ENER-GRI", 0.0, 0.0, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("WAVN-GRI", 0.0, 0.0, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("VRAD-GRI", restfrq, 0.0, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("WAVE-GRI", 0.0, 0.0, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("VOPT-GRI", 0.0, restwav, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("ZOPT-GRI", 0.0, restwav, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("AWAV-GRI", 0.0, 0.0, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("VELO-GRI", 0.0, restwav, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("BETA-GRI", 0.0, restwav, naxisj, crpixj, cdeltX, crvalX);
/* Reproduce Fig. 5 of Paper III. */
naxisj = 1700;
crpixj = 719.8;
crvalX = 7245.2e-10;
cdeltX = 2.956e-10;
restwav = 8500.0e-10;
restfrq = C/restwav;
x1 = crvalX + (1 - crpixj)*cdeltX;
x2 = crvalX + (naxisj - crpixj)*cdeltX;
mars[5] = 0.0;
mars[6] = 0.0;
printf("\nAir wavelength grism axis, span: %.0f to %.0f (nm), "
"step: %f (nm)\n--------------------------------------------"
"------------------------------\n", x1*1e9, x2*1e9, cdeltX*1e9);
nFail += closure("AWAV-GRA", 0.0, 0.0, naxisj, crpixj, cdeltX, crvalX);
nFail += closure("VELO-GRA", 0.0, restwav, naxisj, crpixj, cdeltX, crvalX);
cpgask(0);
cpgend();
if (nFail) {
printf("\nFAIL: %d closure residuals exceed reporting tolerance.\n",
nFail);
} else {
printf("\nPASS: All closure residuals are within reporting tolerance.\n");
}
return nFail;
}
int main()
{
char infile[] = "pih.fits";
char devtyp[16], idents[3][80], nlcprm[1], opt[2];
int c0[] = {-1, -1, -1, -1, -1, -1, -1};
int i, ic, gcode[2], naxis[2], nkeyrec, nreject, nwcs, relax, status;
float blc[2], trc[2];
double cache[257][4], grid1[1], grid2[1], nldprm[1];
struct wcsprm *wcs;
nlfunc_t pgwcsl_;
#if defined HAVE_CFITSIO && defined DO_CFITSIO
char *header;
fitsfile *fptr;
#else
char keyrec[81], header[28801];
int gotend, j, k;
FILE *fptr;
#endif
/* Set line buffering in case stdout is redirected to a file, otherwise
* stdout and stderr messages will be jumbled (stderr is unbuffered). */
setvbuf(stdout, NULL, _IOLBF, 0);
printf("Testing WCSLIB parser for FITS image headers (tpih2.c)\n"
"------------------------------------------------------\n\n");
/* Read in the FITS header, excluding COMMENT and HISTORY keyrecords. */
#if defined HAVE_CFITSIO && defined DO_CFITSIO
status = 0;
if (fits_open_file(&fptr, infile, READONLY, &status)) {
fits_report_error(stderr, status);
return 1;
}
if (fits_hdr2str(fptr, 1, NULL, 0, &header, &nkeyrec, &status)) {
fits_report_error(stderr, status);
return 1;
}
fits_close_file(fptr, &status);
#else
if ((fptr = fopen(infile, "r")) == 0x0) {
printf("ERROR opening %s\n", infile);
return 1;
}
k = 0;
nkeyrec = 0;
gotend = 0;
for (j = 0; j < 10; j++) {
for (i = 0; i < 36; i++) {
if (fgets(keyrec, 81, fptr) == 0) {
break;
}
if (strncmp(keyrec, " ", 8) == 0) continue;
if (strncmp(keyrec, "COMMENT ", 8) == 0) continue;
if (strncmp(keyrec, "HISTORY ", 8) == 0) continue;
strncpy(header+k, keyrec, 80);
k += 80;
nkeyrec++;
if (strncmp(keyrec, "END ", 8) == 0) {
/* An END keyrecord was read, but read the rest of the block. */
gotend = 1;
}
}
if (gotend) break;
}
fclose(fptr);
#endif
fprintf(stderr, "Found %d non-comment header keyrecords.\n", nkeyrec);
relax = WCSHDR_all;
if ((status = wcspih(header, nkeyrec, relax, 2, &nreject, &nwcs, &wcs))) {
fprintf(stderr, "wcspih ERROR %d: %s.\n", status, wcs_errmsg[status]);
}
#if defined HAVE_CFITSIO && defined DO_CFITSIO
free(header);
#endif
/* Plot setup. */
naxis[0] = 1024;
naxis[1] = 1024;
blc[0] = 0.5f;
blc[1] = 0.5f;
trc[0] = naxis[0] + 0.5f;
trc[1] = naxis[1] + 0.5f;
strcpy(devtyp, "/XWINDOW");
cpgbeg(0, devtyp, 1, 1);
cpgvstd();
cpgwnad(0.0f, 1.0f, 0.0f, 1.0f);
cpgask(1);
cpgpage();
/* Annotation. */
strcpy(idents[0], "Right ascension");
strcpy(idents[1], "Declination");
opt[0] = 'G';
opt[1] = 'E';
/* Compact lettering. */
cpgsch(0.8f);
/* Draw full grid lines. */
cpgsci(1);
gcode[0] = 2;
gcode[1] = 2;
grid1[0] = 0.0;
grid2[0] = 0.0;
for (i = 0; i < nwcs; i++) {
if ((status = wcsset(wcs+i))) {
fprintf(stderr, "wcsset ERROR %d: %s.\n", status, wcs_errmsg[status]);
continue;
}
/* Get WCSNAME out of the wcsprm struct. */
strcpy(idents[2], (wcs+i)->wcsname);
printf("\n%s\n", idents[2]);
/* Draw the celestial grid. The grid density is set for each world */
/* coordinate by specifying LABDEN = 1224. */
ic = -1;
cpgsbox(blc, trc, idents, opt, 0, 1224, c0, gcode, 0.0, 0, grid1, 0,
grid2, 0, pgwcsl_, 1, WCSLEN, 1, nlcprm, (int *)(wcs+i), nldprm, 256,
&ic, cache, &status);
/* Draw the frame. */
cpgbox("BC", 0.0f, 0, "BC", 0.0f, 0);
cpgpage();
}
status = wcsvfree(&nwcs, &wcs);
return 0;
}
int closure (
const char ctypeS[9],
double restfrq,
double restwav,
int naxisj,
double crpixj,
double cdeltX,
double crvalX)
{
char ptype, sname[32], title[80], units[8], xtype, ylab[80];
int nFail = 0, restreq, stat1[NSPEC], stat2[NSPEC], status;
register int j;
float tmp, x[NSPEC], xmin, xmax, y[NSPEC], ymax, ymin;
double cdeltS, clos[NSPEC], crvalS, dSdX, resid, residmax, spec1[NSPEC],
spec2[NSPEC];
struct spcprm spc;
/* Get keyvalues for the required spectral axis type. */
if ((status = spcxps(ctypeS, crvalX, restfrq, restwav, &ptype, &xtype,
&restreq, &crvalS, &dSdX))) {
printf("ERROR %d from spcxps() for %s.\n", status, ctypeS);
return 1;
}
cdeltS = cdeltX * dSdX;
spcini(&spc);
if (ctypeS[5] == 'G') {
/* KPNO MARS spectrograph grism parameters. */
spc.pv[0] = mars[0];
spc.pv[1] = mars[1];
spc.pv[2] = mars[2];
spc.pv[3] = mars[3];
spc.pv[4] = mars[4];
spc.pv[5] = mars[5];
spc.pv[6] = mars[6];
}
/* Construct the axis. */
for (j = 0; j < naxisj; j++) {
spec1[j] = (j+1 - crpixj)*cdeltS;
}
printf("%4s (CRVALk+w) range: %13.6e to %13.6e, step: %13.6e\n", ctypeS,
crvalS+spec1[0], crvalS+spec1[naxisj-1], cdeltS);
/* Initialize. */
spc.flag = 0;
spc.crval = crvalS;
spc.restfrq = restfrq;
spc.restwav = restwav;
strncpy(spc.type, ctypeS, 4);
spc.type[4] = '\0';
strcpy(spc.code, ctypeS+5);
/* Convert the first to the second. */
if ((status = spcx2s(&spc, naxisj, 1, 1, spec1, spec2, stat1))) {
printf("spcx2s ERROR %d: %s.\n", status, spc_errmsg[status]);
}
/* Convert the second back to the first. */
if ((status = spcs2x(&spc, naxisj, 1, 1, spec2, clos, stat2))) {
printf("spcs2x ERROR %d: %s.\n", status, spc_errmsg[status]);
}
residmax = 0.0;
/* Test closure. */
for (j = 0; j < naxisj; j++) {
if (stat1[j]) {
printf("%s: w =%20.12e -> %s = ???, stat = %d\n", ctypeS, spec1[j],
spc.type, stat1[j]);
continue;
}
if (stat2[j]) {
printf("%s: w =%20.12e -> %s =%20.12e -> w = ???, stat = %d\n",
ctypeS, spec1[j], spc.type, spec2[j], stat2[j]);
continue;
}
resid = fabs((clos[j] - spec1[j])/cdeltS);
if (resid > residmax) residmax = resid;
if (resid > tol) {
nFail++;
printf("%s: w =%20.12e -> %s =%20.12e ->\n w =%20.12e, "
"resid =%20.12e\n", ctypeS, spec1[j], spc.type, spec2[j],
clos[j], resid);
}
}
printf("%s: Maximum closure residual = %.1e pixel.\n", ctypeS, residmax);
/* Draw graph. */
cpgbbuf();
cpgeras();
xmin = (float)(crvalS + spec1[0]);
xmax = (float)(crvalS + spec1[naxisj-1]);
ymin = (float)(spec2[0]) - xmin;
ymax = ymin;
for (j = 0; j < naxisj; j++) {
x[j] = (float)(j+1);
y[j] = (float)(spec2[j] - (crvalS + spec1[j]));
if (y[j] > ymax) ymax = y[j];
if (y[j] < ymin) ymin = y[j];
}
j = (int)crpixj + 1;
if (y[j] < 0.0) {
tmp = ymin;
ymin = ymax;
ymax = tmp;
}
cpgask(0);
cpgenv(1.0f, (float)naxisj, ymin, ymax, 0, -1);
cpgsci(1);
cpgbox("ABNTS", 0.0f, 0, "BNTS", 0.0f, 0);
spctyp(ctypeS, 0x0, 0x0, sname, units, 0x0, 0x0, 0x0);
sprintf(ylab, "%s - correction [%s]", sname, units);
sprintf(title, "%s: CRVALk + w [%s]", ctypeS, units);
cpglab("Pixel coordinate", ylab, title);
cpgaxis("N", 0.0f, ymax, (float)naxisj, ymax, xmin, xmax, 0.0f, 0, -0.5f,
0.0f, 0.5f, -0.5f, 0.0f);
cpgaxis("N", (float)naxisj, ymin, (float)naxisj, ymax, (float)(ymin/cdeltS),
(float)(ymax/cdeltS), 0.0f, 0, 0.5f, 0.0f, 0.5f, 0.1f, 0.0f);
cpgmtxt("R", 2.2f, 0.5f, 0.5f, "Pixel offset");
cpgline(naxisj, x, y);
cpgsci(7);
cpgpt1((float)crpixj, 0.0f, 24);
cpgebuf();
printf("Type <RETURN> for next page: ");
(void)getchar();
printf("\n");
return nFail;
}
void doPlot(pulsar *psr,int npsr,int overlay)
{
int i,j,fitFlag=1,exitFlag=0,scale1=0,scale2,count,p,xautoscale=1,k,graphics=1;
int yautoscale=1,plotpre=1;
int time=0;
char xstr[1000],ystr[1000];
float x[MAX_OBSN],y[MAX_OBSN],yerr1[MAX_OBSN],yerr2[MAX_OBSN],tmax,tmin,tmaxy1,tminy1,tmaxy2,tminy2;
float minx,maxx,miny,maxy,plotx1,plotx2,ploty1,ploty2,mean;
float mouseX,mouseY;
float fontSize=1.8;
char key;
float widthPap=0.0,aspectPap=0.618;
/* Obtain a graphical PGPLOT window */
if (overlay==1)
cpgbeg(0,"?",2,1);
else
cpgbeg(0,"?",2,npsr);
cpgpap(widthPap,aspectPap);
cpgsch(fontSize);
cpgask(0);
do {
for (p=0;p<npsr;p++)
{
scale2 = psr[p].nobs;
for (j=0;j<2;j++)
{
if (j==0) fitFlag=1;
else if (j==1) fitFlag=2;
ld_sprintf(xstr,"MJD-%.1Lf",psr[0].param[param_pepoch].val[0]);
sprintf(ystr,"Residual (\\gmsec)");
count=0;
for (i=0;i<psr[p].nobs;i++)
{
if (psr[p].obsn[i].deleted == 0 &&
(psr[p].param[param_start].paramSet[0]!=1 || psr[p].param[param_start].fitFlag[0]!=1 ||
psr[p].param[param_start].val[0] < psr[p].obsn[i].bat) &&
(psr[p].param[param_finish].paramSet[0]!=1 || psr[p].param[param_finish].fitFlag[0]!=1 ||
psr[p].param[param_finish].val[0] > psr[p].obsn[i].bat))
{
if (xautoscale==1)
x[count] = (double)(psr[p].obsn[i].bat-psr[p].param[param_pepoch].val[0]);
else
x[count] = (double)(psr[p].obsn[i].bat-psr[0].param[param_pepoch].val[0]);
if (fitFlag==1) /* Get pre-fit residual */
y[count] = (double)psr[p].obsn[i].prefitResidual*1.0e6;
else if (fitFlag==2) /* Post-fit residual */
y[count] = (double)psr[p].obsn[i].residual*1.0e6;
count++;
}
}
/* Remove mean from the residuals and calculate error bars */
mean = findMean(y,psr,p,scale1,count);
count=0;
for (i=0;i<psr[p].nobs;i++)
{
if (psr[p].obsn[i].deleted==0 &&
(psr[p].param[param_start].paramSet[0]!=1 || psr[p].param[param_start].fitFlag[0]!=1 ||
psr[p].param[param_start].val[0] < psr[p].obsn[i].bat) &&
(psr[p].param[param_finish].paramSet[0]!=1 || psr[p].param[param_finish].fitFlag[0]!=1 ||
psr[p].param[param_finish].val[0] > psr[p].obsn[i].bat))
{
psr[p].obsn[i].residual-=mean/1.0e6;
y[count]-=mean;
yerr1[count] = y[count]-(float)psr[p].obsn[i].toaErr;
yerr2[count] = y[count]+(float)psr[p].obsn[i].toaErr;
count++;
}
}
/* Get scaling for graph */
minx = findMin(x,psr,p,scale1,count);
maxx = findMax(x,psr,p,scale1,count);
if (xautoscale==1)
{
plotx1 = minx-(maxx-minx)*0.1;
plotx2 = maxx+(maxx-minx)*0.1;
}
else
{
plotx1 = tmin-(tmax-tmin)*0.1;
plotx2 = tmax+(tmax-tmin)*0.1;
}
miny = findMin(y,psr,p,scale1,count);
maxy = findMax(y,psr,p,scale1,count);
if (yautoscale==1)
{
ploty1 = miny-(maxy-miny)*0.1;
ploty2 = maxy+(maxy-miny)*0.1;
}
else
{
if (j==0)
{
ploty1 = tminy1-(tmaxy1-tminy1)*0.1;
ploty2 = tmaxy1+(tmaxy1-tminy1)*0.1;
}
else
{
ploty1 = tminy2-(tmaxy2-tminy2)*0.1;
ploty2 = tmaxy2+(tmaxy2-tminy2)*0.1;
}
}
/* Plot the residuals */
if (plotpre==1 || j!=0)
{
float xx[MAX_OBSN],yy[MAX_OBSN],yyerr1[MAX_OBSN],yyerr2[MAX_OBSN];
int num=0,colour;
if (overlay==0 || (overlay==1 && p==0))
{
cpgenv(plotx1,plotx2,ploty1,ploty2,0,0);
cpglab(xstr,ystr,psr[p].name);
}
for (colour=0;colour<5;colour++)
{
num=0;
for (i=0;i<count;i++)
{
if ((colour==0 && psr[p].obsn[i].freq<=500) ||
(colour==1 && psr[p].obsn[i].freq>500 && psr[p].obsn[i].freq<=1000) ||
(colour==2 && psr[p].obsn[i].freq>1000 && psr[p].obsn[i].freq<=1500) ||
(colour==3 && psr[p].obsn[i].freq>1500 && psr[p].obsn[i].freq<=3300) ||
(colour==4 && psr[p].obsn[i].freq>3300))
{
xx[num]=x[i];
yy[num]=y[i];
yyerr1[num]=yerr1[i];
yyerr2[num]=yerr2[i];
num++;
}
}
cpgsci(colour+1);
if (overlay==1)
cpgsci(p+1);
cpgpt(num,xx,yy,16);
cpgerry(num,xx,yyerr1,yyerr2,1);
}
cpgsci(1);
}
}
}
printf("------------------------------\n");
printf("`a' set aspect ratio\n");
printf("`f' set font size\n");
printf("`g' set graphics device\n");
printf("`q' quit\n");
printf("`x' toggle autoscale x axis\n");
printf("`y' toggle autoscale y axis\n");
printf("`p' toggle prefit plotting\n");
printf("`r' output residuals to file\n");
if (graphics==1)
{
cpgcurs(&mouseX,&mouseY,&key);
/* Check key press */
if (key=='q') exitFlag=1;
if (key=='p') {
plotpre*=-1;
if (plotpre==-1)
{
cpgend();
if (overlay==1)
cpgbeg(0,"/xs",1,1);
else
cpgbeg(0,"/xs",1,npsr);
cpgpap(widthPap,aspectPap);
cpgsch(fontSize);
cpgask(0);
}
else
{
cpgend();
if (overlay==1)
cpgbeg(0,"/xs",2,1);
else
cpgbeg(0,"/xs",2,npsr);
cpgpap(widthPap,aspectPap);
cpgsch(fontSize);
cpgask(0);
}
}
else if (key=='a') /* Change aspect ratio */
{
printf("Please enter a new aspect ratio ");
scanf("%f",&aspectPap);
cpgend();
cpgbeg(0,"/xs",2,npsr);
cpgpap(widthPap,aspectPap);
cpgsch(fontSize);
cpgask(0);
}
else if (key=='f') /* Change font size */
{
printf("Please enter a new font size ");
scanf("%f",&fontSize);
cpgend();
cpgbeg(0,"/xs",2,npsr);
cpgpap(widthPap,aspectPap);
cpgsch(fontSize);
cpgask(0);
}
else if (key=='g')
{
graphics=0;
cpgend();
if (plotpre==-1)
{
cpgend();
if (overlay==1)
cpgbeg(0,"?",1,1);
else
cpgbeg(0,"?",1,npsr);
cpgpap(widthPap,aspectPap);
cpgsch(fontSize);
cpgask(0);
}
else
{
cpgend();
if (overlay==1)
cpgbeg(0,"?",1,1);
else
cpgbeg(0,"?",2,npsr);
cpgpap(widthPap,aspectPap);
cpgsch(fontSize);
cpgask(0);
}
}
else if (key=='r') /* Output residuals to file */
{
FILE *fout;
char fname[1000];
int ii,jj;
for (ii=0;ii<npsr;ii++)
{
sprintf(fname,"%s.res",psr[ii].name);
fout = fopen(fname,"w");
/* Print header */
fprintf(fout,"#PSR %s\n",psr[ii].name);
ld_fprintf(fout,"#F0 %.14Lf\n",psr[ii].param[param_f].val[0]);
fprintf(fout,"#RAJ %s\n",psr[ii].rajStrPre);
fprintf(fout,"#DECJ %s\n",psr[ii].decjStrPre);
for (jj=0;jj<psr[ii].nobs;jj++)
fprintf(fout,"%.5lf %.5lg %.5lg\n",
(double)(psr[ii].obsn[jj].bat-psr[0].param[param_pepoch].val[0]),
(double)(psr[ii].obsn[jj].residual),(double)(psr[ii].obsn[jj].toaErr)/1.0e6);
fclose(fout);
}
}
else if (key=='x')
{
xautoscale*=-1;
if (xautoscale==-1)
{
for (k=0;k<npsr;k++)
{
count=0;
for (i=0;i<psr[k].nobs;i++)
{
if (psr[k].obsn[i].deleted==0 &&
(psr[k].param[param_start].paramSet[0]!=1 || psr[k].param[param_start].fitFlag[0]!=1 ||
psr[k].param[param_start].val[0] < psr[k].obsn[i].bat) &&
(psr[k].param[param_finish].paramSet[0]!=1 || psr[k].param[param_finish].fitFlag[0]!=1 ||
psr[k].param[param_finish].val[0] > psr[k].obsn[i].bat))
{x[count] = (double)(psr[k].obsn[i].bat-psr[0].param[param_pepoch].val[0]); count++;}
}
minx = findMin(x,psr,k,scale1,count);
maxx = findMax(x,psr,k,scale1,count);
if (k==0)
{
tmin = minx;
tmax = maxx;
printf("Have1 tmin = %f, tmax = %f\n",tmin,tmax);
}
else
{
if (tmin > minx) tmin = minx;
if (tmax < maxx) tmax = maxx;
printf("Have2 tmin = %f, tmax = %f\n",tmin,tmax);
}
}
}
}
else if (key=='y')
{
yautoscale*=-1;
if (yautoscale==-1)
{
for (k=0;k<npsr;k++)
{
count=0;
for (i=0;i<psr[k].nobs;i++)
{
if (psr[k].obsn[i].deleted==0 &&
(psr[k].param[param_start].paramSet[0]!=1 || psr[k].param[param_start].fitFlag[0]!=1 ||
psr[k].param[param_start].val[0] < psr[k].obsn[i].bat) &&
(psr[k].param[param_finish].paramSet[0]!=1 || psr[k].param[param_finish].fitFlag[0]!=1 ||
psr[k].param[param_finish].val[0] > psr[k].obsn[i].bat))
{y[count] = (double)psr[k].obsn[i].prefitResidual*1e6; count++;}
}
miny = findMin(y,psr,k,scale1,count);
maxy = findMax(y,psr,k,scale1,count);
if (k==0)
{
tminy1 = miny;
tmaxy1 = maxy;
}
else
{
if (tminy1 > miny) tminy1 = miny;
if (tmaxy1 < maxy) tmaxy1 = maxy;
}
count=0;
for (i=0;i<psr[k].nobs;i++)
{
if (psr[k].obsn[i].deleted==0 &&
(psr[k].param[param_start].paramSet[0]!=1 || psr[k].param[param_start].fitFlag[0]!=1 ||
psr[k].param[param_start].val[0] < psr[k].obsn[i].bat) &&
(psr[k].param[param_finish].paramSet[0]!=1 || psr[k].param[param_finish].fitFlag[0]!=1 ||
psr[k].param[param_finish].val[0] > psr[k].obsn[i].bat))
{y[count] = (double)psr[k].obsn[i].residual*1e6; count++;}
}
miny = findMin(y,psr,k,scale1,count);
maxy = findMax(y,psr,k,scale1,count);
if (k==0)
{
tminy2 = miny;
tmaxy2 = maxy;
}
else
{
if (tminy2 > miny) tminy2 = miny;
if (tmaxy2 < maxy) tmaxy2 = maxy;
}
}
printf("Have tminy2 = %g %g\n",tminy2,tmaxy2);
}
}
else printf("Unknown key press %c\n",key);
}
else
{
graphics=1;
cpgend();
if (plotpre==-1)
{
cpgend();
if (overlay==1)
cpgbeg(0,"/xs",1,1);
else
cpgbeg(0,"/xs",1,npsr);
cpgpap(widthPap,aspectPap);
cpgsch(fontSize);
cpgask(0);
}
else
{
cpgend();
if (overlay==1)
cpgbeg(0,"/xs",2,1);
else
cpgbeg(0,"/xs",2,npsr);
cpgpap(widthPap,aspectPap);
cpgsch(fontSize);
cpgask(0);
}
}
} while (exitFlag==0);
cpgend();
}
int main()
{
char text[80];
int ci, crval1, crval2, ilat, ilng, j, k, latpole, lonpole, stat[361],
status;
float xr[512], yr[512];
double lat[181], lng[361], phi[361], theta[361], x[361], y[361];
struct celprm native, celestial;
printf(
"Testing WCSLIB celestial coordinate transformation routines (tcel1.c)\n"
"---------------------------------------------------------------------\n");
/* List status return messages. */
printf("\nList of cel status return values:\n");
for (status = 1; status <= 6; status++) {
printf("%4d: %s.\n", status, cel_errmsg[status]);
}
printf("\n");
/* Initialize. */
celini(&native);
/* Reference angles for the native graticule (in fact, the defaults). */
native.ref[0] = 0.0;
native.ref[1] = 0.0;
/* Set up Bonne's projection with conformal latitude at +35. */
strcpy(native.prj.code, "BON");
native.prj.pv[1] = 35.0;
/* Celestial graticule. */
celini(&celestial);
celestial.prj = native.prj;
/* PGPLOT initialization. */
strcpy(text, "/xwindow");
cpgbeg(0, text, 1, 1);
/* Define pen colours. */
cpgscr(0, 0.0f, 0.0f, 0.0f);
cpgscr(1, 1.0f, 1.0f, 0.0f);
cpgscr(2, 1.0f, 1.0f, 1.0f);
cpgscr(3, 0.5f, 0.5f, 0.8f);
cpgscr(4, 0.8f, 0.5f, 0.5f);
cpgscr(5, 0.8f, 0.8f, 0.8f);
cpgscr(6, 0.5f, 0.5f, 0.8f);
cpgscr(7, 0.8f, 0.5f, 0.5f);
cpgscr(8, 0.3f, 0.5f, 0.3f);
/* Define PGPLOT viewport. */
cpgenv(-180.0f, 180.0f, -90.0f, 140.0f, 1, -2);
/* Loop over CRVAL2, LONPOLE, and LATPOLE with CRVAL1 incrementing by */
/* 15 degrees each time (it has an uninteresting effect). */
crval1 = -180;
for (crval2 = -90; crval2 <= 90; crval2 += 30) {
for (lonpole = -180; lonpole <= 180; lonpole += 30) {
for (latpole = -1; latpole <= 1; latpole += 2) {
/* For the celestial graticule, set the celestial coordinates of
* the reference point of the projection (which for Bonne's
* projection is at the intersection of the native equator and
* prime meridian), the native longitude of the celestial pole,
* and extra information needed to determine the celestial
* latitude of the native pole. These correspond to FITS keywords
* CRVAL1, CRVAL2, LONPOLE, and LATPOLE.
*/
celestial.ref[0] = (double)crval1;
celestial.ref[1] = (double)crval2;
celestial.ref[2] = (double)lonpole;
celestial.ref[3] = (double)latpole;
/* Skip invalid values of LONPOLE. */
if (celset(&celestial)) {
continue;
}
/* Skip redundant values of LATPOLE. */
if (latpole == 1 && fabs(celestial.ref[3]) < 0.1) {
continue;
}
/* Buffer PGPLOT output. */
cpgbbuf();
cpgeras();
/* Write a descriptive title. */
sprintf(text, "Bonne's projection (BON) - 15 degree graticule");
printf("\n%s\n", text);
cpgtext(-180.0f, -100.0f, text);
sprintf(text, "centred on celestial coordinates (%7.2f,%6.2f)",
celestial.ref[0], celestial.ref[1]);
printf("%s\n", text);
cpgtext (-180.0f, -110.0f, text);
sprintf(text, "with north celestial pole at native coordinates "
"(%7.2f,%7.2f)", celestial.ref[2], celestial.ref[3]);
printf("%s\n", text);
cpgtext(-180.0f, -120.0f, text);
/* Draw the native graticule faintly in the background. */
cpgsci(8);
/* Draw native meridians of longitude. */
for (j = 0, ilat = -90; ilat <= 90; ilat++, j++) {
lat[j] = (double)ilat;
}
for (ilng = -180; ilng <= 180; ilng += 15) {
lng[0] = (double)ilng;
if (ilng == -180) lng[0] = -179.99;
if (ilng == 180) lng[0] = 179.99;
/* Dash the longitude of the celestial pole. */
if ((ilng-lonpole)%360 == 0) {
cpgsls(2);
cpgslw(5);
}
cels2x(&native, 1, 181, 1, 1, lng, lat, phi, theta, x, y,
stat);
k = 0;
for (j = 0; j < 181; j++) {
if (stat[j]) {
if (k > 1) cpgline(k, xr, yr);
k = 0;
continue;
}
xr[k] = -x[j];
yr[k] = y[j];
k++;
}
cpgline(k, xr, yr);
cpgsls(1);
cpgslw(1);
}
/* Draw native parallels of latitude. */
lng[0] = -179.99;
lng[360] = 179.99;
for (j = 1, ilng = -179; ilng < 180; ilng++, j++) {
lng[j] = (double)ilng;
}
for (ilat = -90; ilat <= 90; ilat += 15) {
lat[0] = (double)ilat;
cels2x(&native, 361, 1, 1, 1, lng, lat, phi, theta, x, y,
stat);
k = 0;
for (j = 0; j < 361; j++) {
if (stat[j]) {
if (k > 1) cpgline(k, xr, yr);
k = 0;
continue;
}
xr[k] = -x[j];
yr[k] = y[j];
k++;
}
cpgline(k, xr, yr);
}
/* Draw a colour-coded celestial coordinate graticule. */
ci = 1;
/* Draw celestial meridians of longitude. */
for (j = 0, ilat = -90; ilat <= 90; ilat++, j++) {
lat[j] = (double)ilat;
}
for (ilng = -180; ilng <= 180; ilng += 15) {
lng[0] = (double)ilng;
if (++ci > 7) ci = 2;
cpgsci(ilng?ci:1);
/* Dash the reference longitude. */
if ((ilng-crval1)%360 == 0) {
cpgsls(2);
cpgslw(5);
}
cels2x(&celestial, 1, 181, 1, 1, lng, lat, phi, theta, x, y,
stat);
k = 0;
for (j = 0; j < 181; j++) {
if (stat[j]) {
if (k > 1) cpgline(k, xr, yr);
k = 0;
continue;
}
/* Test for discontinuities. */
if (j > 0) {
if (fabs(x[j]-x[j-1]) > 4.0 || fabs(y[j]-y[j-1]) > 4.0) {
if (k > 1) cpgline(k, xr, yr);
k = 0;
}
}
xr[k] = -x[j];
yr[k] = y[j];
k++;
}
cpgline(k, xr, yr);
cpgsls(1);
cpgslw(1);
}
/* Draw celestial parallels of latitude. */
for (j = 0, ilng = -180; ilng <= 180; ilng++, j++) {
lng[j] = (double)ilng;
}
ci = 1;
for (ilat = -90; ilat <= 90; ilat += 15) {
lat[0] = (double)ilat;
if (++ci > 7) ci = 2;
cpgsci(ilat?ci:1);
/* Dash the reference latitude. */
if (ilat == crval2) {
cpgsls(2);
cpgslw(5);
}
cels2x(&celestial, 361, 1, 1, 1, lng, lat, phi, theta, x, y,
stat);
k = 0;
for (j = 0; j < 361; j++) {
if (stat[j]) {
if (k > 1) cpgline(k, xr, yr);
k = 0;
continue;
}
/* Test for discontinuities. */
if (j > 0) {
if (fabs(x[j]-x[j-1]) > 4.0 || fabs(y[j]-y[j-1]) > 4.0) {
if (k > 1) cpgline(k, xr, yr);
k = 0;
}
}
xr[k] = -x[j];
yr[k] = y[j];
k++;
}
cpgline(k, xr, yr);
cpgsls(1);
cpgslw(1);
}
/* Flush PGPLOT buffer. */
cpgebuf();
printf(" Type <RETURN> for next page: ");
getc(stdin);
/* Cycle through celestial longitudes. */
if ((crval1 += 15) > 180) crval1 = -180;
/* Skip boring celestial latitudes. */
if (crval2 == 0) break;
}
if (crval2 == 0) break;
}
}
cpgask(0);
cpgend();
return 0;
}
int main()
{
void prjplt();
int status;
char text[80], text1[80], text2[80];
struct prjprm prj;
printf("Testing WCSLIB spherical projection routines (tprj2.c)\n"
"------------------------------------------------------\n");
/* List status return messages. */
printf("\nList of prj status return values:\n");
for (status = 1; status <= 4; status++) {
printf("%4d: %s.\n", status, prj_errmsg[status]);
}
printf("\n");
/* PGPLOT initialization. */
strcpy(text, "/xwindow");
cpgbeg(0, text, 1, 1);
/* Define pen colours. */
cpgscr(0, 0.00f, 0.00f, 0.00f);
cpgscr(1, 1.00f, 1.00f, 0.00f);
cpgscr(2, 1.00f, 1.00f, 1.00f);
cpgscr(3, 0.50f, 0.50f, 0.80f);
cpgscr(4, 0.80f, 0.50f, 0.50f);
cpgscr(5, 0.80f, 0.80f, 0.80f);
cpgscr(6, 0.50f, 0.50f, 0.80f);
cpgscr(7, 0.80f, 0.50f, 0.50f);
cpgscr(8, 0.30f, 0.50f, 0.30f);
strcpy(text1, "\n%s projection\n");
strcpy(text2, "\n%s projection\nParameters:");
prjini(&prj);
/* AZP: zenithal/azimuthal perspective. */
prj.pv[1] = 2.0;
prj.pv[2] = 30.0;
printf(text2, "Zenithal/azimuthal perspective");
printf("%12.5f%12.5f\n", prj.pv[1], prj.pv[2]);
prjplt("AZP", 90, -90, &prj);
/* SZP: slant zenithal perspective. */
prj.pv[1] = 2.0;
prj.pv[2] = 210.0;
prj.pv[3] = 60.0;
printf(text2, "Slant zenithal perspective");
printf("%12.5f%12.5f%12.5f\n", prj.pv[1], prj.pv[2], prj.pv[3]);
prjplt("SZP", 90, -90, &prj);
/* TAN: gnomonic. */
printf(text1, "Gnomonic");
prjplt("TAN", 90, 5, &prj);
/* STG: stereographic. */
printf(text1, "Stereographic");
prjplt("STG", 90, -85, &prj);
/* SIN: orthographic. */
prj.pv[1] = -0.3;
prj.pv[2] = 0.5;
printf(text2, "Orthographic/synthesis");
printf("%12.5f%12.5f\n", prj.pv[1], prj.pv[2]);
prjplt("SIN", 90, -90, &prj);
/* ARC: zenithal/azimuthal equidistant. */
printf(text1, "Zenithal/azimuthal equidistant");
prjplt("ARC", 90, -90, &prj);
/* ZPN: zenithal/azimuthal polynomial. */
prj.pv[0] = 0.05000;
prj.pv[1] = 0.95000;
prj.pv[2] = -0.02500;
prj.pv[3] = -0.15833;
prj.pv[4] = 0.00208;
prj.pv[5] = 0.00792;
prj.pv[6] = -0.00007;
prj.pv[7] = -0.00019;
prj.pv[8] = 0.00000;
prj.pv[9] = 0.00000;
printf(text2, "Zenithal/azimuthal polynomial");
printf("%12.5f%12.5f%12.5f%12.5f%12.5f\n",
prj.pv[0], prj.pv[1], prj.pv[2], prj.pv[3], prj.pv[4]);
printf(" %12.5f%12.5f%12.5f%12.5f%12.5f\n",
prj.pv[5], prj.pv[6], prj.pv[7], prj.pv[8], prj.pv[9]);
prjplt("ZPN", 90, 10, &prj);
/* ZEA: zenithal/azimuthal equal area. */
printf(text1, "Zenithal/azimuthal equal area");
prjplt("ZEA", 90, -90, &prj);
/* AIR: Airy's zenithal projection. */
prj.pv[1] = 45.0;
printf(text2, "Airy's zenithal");
printf("%12.5f\n", prj.pv[1]);
prjplt("AIR", 90, -85, &prj);
/* CYP: cylindrical perspective. */
prj.pv[1] = 3.0;
prj.pv[2] = 0.8;
printf(text2, "Cylindrical perspective");
printf("%12.5f%12.5f\n", prj.pv[1], prj.pv[2]);
prjplt("CYP", 90, -90, &prj);
/* CEA: cylindrical equal area. */
prj.pv[1] = 0.75;
printf(text2, "Cylindrical equal area");
printf("%12.5f\n", prj.pv[1]);
prjplt("CEA", 90, -90, &prj);
/* CAR: plate carree. */
printf(text1, "Plate carree");
prjplt("CAR", 90, -90, &prj);
/* MER: Mercator's. */
printf(text1, "Mercator's");
prjplt("MER", 85, -85, &prj);
/* SFL: Sanson-Flamsteed. */
printf(text1, "Sanson-Flamsteed (global sinusoid)");
prjplt("SFL", 90, -90, &prj);
/* PAR: parabolic. */
printf(text1, "Parabolic");
prjplt("PAR", 90, -90, &prj);
/* MOL: Mollweide's projection. */
printf(text1, "Mollweide's");
prjplt("MOL", 90, -90, &prj);
/* AIT: Hammer-Aitoff. */
printf(text1, "Hammer-Aitoff");
prjplt("AIT", 90, -90, &prj);
/* COP: conic perspective. */
prj.pv[1] = 60.0;
prj.pv[2] = 15.0;
printf(text2, "Conic perspective");
printf("%12.5f%12.5f\n", prj.pv[1], prj.pv[2]);
prjplt("COP", 90, -25, &prj);
/* COE: conic equal area. */
prj.pv[1] = 60.0;
prj.pv[2] = -15.0;
printf(text2, "Conic equal area");
printf("%12.5f%12.5f\n", prj.pv[1], prj.pv[2]);
prjplt("COE", 90, -90, &prj);
/* COD: conic equidistant. */
prj.pv[1] = -60.0;
prj.pv[2] = 15.0;
printf(text2, "Conic equidistant");
printf("%12.5f%12.5f\n", prj.pv[1], prj.pv[2]);
prjplt("COD", 90, -90, &prj);
/* COO: conic orthomorphic. */
prj.pv[1] = -60.0;
prj.pv[2] = -15.0;
printf(text2, "Conic orthomorphic");
printf("%12.5f%12.5f\n", prj.pv[1], prj.pv[2]);
prjplt("COO", 85, -90, &prj);
/* BON: Bonne's projection. */
prj.pv[1] = 30.0;
printf(text2, "Bonne's");
printf("%12.5f\n", prj.pv[1]);
prjplt("BON", 90, -90, &prj);
/* PCO: polyconic. */
printf(text1, "Polyconic");
prjplt("PCO", 90, -90, &prj);
/* TSC: tangential spherical cube. */
printf(text1, "Tangential spherical cube");
prjplt("TSC", 90, -90, &prj);
/* CSC: COBE quadrilateralized spherical cube. */
printf(text1, "COBE quadrilateralized spherical cube");
prjplt("CSC", 90, -90, &prj);
/* QSC: quadrilateralized spherical cube. */
printf(text1, "Quadrilateralized spherical cube");
prjplt("QSC", 90, -90, &prj);
/* HPX: HEALPix projection. */
prj.pv[1] = 4.0;
prj.pv[2] = 3.0;
printf(text1, "HEALPix");
prjplt("HPX", 90, -90, &prj);
/* XPH: HEALPix polar, aka "butterfly" projection. */
printf(text1, "Butterfly");
prjplt("XPH", 90, -90, &prj);
cpgask(0);
cpgend();
return 0;
}
static void _pgask (int *i)
{
cpgask (*i);
}
