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; }
int main(int argc, char **argv) { char alt = ' ', *header, idents[3][80], *infile; int alts[27], c, dofix = 0, doprt = 0, dopix = 0, doworld = 0, hdunum = 1, hdutype, i, j, nelem, nkeyrec, nreject, nwcs, *stat = 0x0, status; double *imgcrd = 0x0, phi, *pixcrd = 0x0, theta, *world = 0x0; struct wcsprm *wcs; fitsfile *fptr; /* Parse options. */ 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 'f': dofix = 1; break; case 'h': hdunum = atoi(argv[i]+2); break; case 'p': doprt = 1; break; case 'x': dopix = 1; break; case 'w': doworld = 1; 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("wcsware: Cannot access %s.\n", infile); return 1; } if (!dopix && !doworld) doprt = 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; } /* 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); if (wcs == 0x0) { fprintf(stderr, "No world coordinate systems found.\n"); return 1; } /* Read -TAB arrays from the binary table extension (if necessary). */ if (fits_read_wcstab(fptr, wcs->nwtb, (wtbarr *)wcs->wtb, &status)) { goto fitserr; } fits_close_file(fptr, &status); /* Translate non-standard WCS keyvalues? */ if (dofix) { stat = malloc(NWCSFIX * sizeof(int)); if ((status = wcsfix(7, 0, wcs, stat))) { for (i = 0; i < NWCSFIX; i++) { if (stat[i] > 0) { fprintf(stderr, "wcsfix ERROR %d: %s.\n", status, wcsfix_errmsg[stat[i]]); } } return 1; } } /* Sort out alternates. */ if (alt) { wcsidx(nwcs, &wcs, alts); if (alt == ' ') { if (alts[0] == -1) { fprintf(stderr, "WARNING, no primary coordinate representation.\n"); alt = '\0'; } } else if (alt < 'A' || alt > 'Z') { fprintf(stderr, "WARNING, alternate specifier \"%c\" is invalid.\n", alt); alt = '\0'; } else { if (alts[alt - 'A' + 1] == -1) { fprintf(stderr, "WARNING, no alternate coordinate representation " "\"%c\".\n", alt); alt = '\0'; } } } /* Initialize and possibly print the structs. */ for (i = 0; i < nwcs; i++) { if (alt && (wcs+i)->alt[0] != alt) { continue; } else if (i) { printf("\nType <CR> for next: "); fgetc(stdin); } 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); if (strlen(idents[2])) { printf("\n%s\n", idents[2]); } /* Print the struct. */ if (doprt) { wcsprt(wcs+i); } /* Transform coordinates? */ if (dopix || doworld) { nelem = (wcs+i)->naxis; world = realloc(world, nelem * sizeof(double)); imgcrd = realloc(imgcrd, nelem * sizeof(double)); pixcrd = realloc(pixcrd, nelem * sizeof(double)); stat = realloc(stat, nelem * sizeof(int)); if (dopix) { /* Transform pixel coordinates. */ while (1) { printf("\nEnter %d pixel coordinate element%s: ", nelem, (nelem==1)?"":"s"); c = fgetc(stdin); if (c == EOF || c == '\n') { if (c == EOF) printf("\n"); break; } ungetc(c, stdin); scanf("%lf", pixcrd); for (j = 1; j < nelem; j++) { scanf("%*[ ,]%lf", pixcrd+j); } while (fgetc(stdin) != '\n'); printf("Pixel: "); for (j = 0; j < nelem; j++) { printf("%s%14.9g", j?", ":"", pixcrd[j]); } if ((status = wcsp2s(wcs+i, 1, nelem, pixcrd, imgcrd, &phi, &theta, world, stat))) { fprintf(stderr, "wcsp2s ERROR %d: %s.\n", status, wcs_errmsg[status]); } else { printf("\nImage: "); for (j = 0; j < nelem; j++) { if (j == (wcs+i)->lng || j == (wcs+i)->lat) { /* Print angles in fixed format. */ printf("%s%14.6f", j?", ":"", imgcrd[j]); } else { printf("%s%14.9g", j?", ":"", imgcrd[j]); } } printf("\nWorld: "); for (j = 0; j < nelem; j++) { if (j == (wcs+i)->lng || j == (wcs+i)->lat) { /* Print angles in fixed format. */ printf("%s%14.6f", j?", ":"", world[j]); } else { printf("%s%14.9g", j?", ":"", world[j]); } } printf("\n"); } } } if (doworld) { /* Transform world coordinates. */ while (1) { printf("\nEnter %d world coordinate element%s: ", nelem, (nelem==1)?"":"s"); c = fgetc(stdin); if (c == EOF || c == '\n') { if (c == EOF) printf("\n"); break; } ungetc(c, stdin); scanf("%lf", world); for (j = 1; j < nelem; j++) { scanf("%*[ ,]%lf", world+j); } while (fgetc(stdin) != '\n'); printf("World: "); for (j = 0; j < nelem; j++) { if (j == (wcs+i)->lng || j == (wcs+i)->lat) { /* Print angles in fixed format. */ printf("%s%14.6f", j?", ":"", world[j]); } else { printf("%s%14.9g", j?", ":"", world[j]); } } if ((status = wcss2p(wcs+i, 1, nelem, world, &phi, &theta, imgcrd, pixcrd, stat))) { fprintf(stderr, "wcss2p ERROR %d: %s.\n", status, wcs_errmsg[status]); } else { printf("\nImage: "); for (j = 0; j < nelem; j++) { if (j == (wcs+i)->lng || j == (wcs+i)->lat) { /* Print angles in fixed format. */ printf("%s%14.6f", j?", ":"", imgcrd[j]); } else { printf("%s%14.9g", j?", ":"", imgcrd[j]); } } printf("\nPixel: "); for (j = 0; j < nelem; j++) { printf("%s%14.9g", j?", ":"", pixcrd[j]); } printf("\n"); } } } } } status = wcsvfree(&nwcs, &wcs); return 0; fitserr: fits_report_error(stderr, status); fits_close_file(fptr, &status); return 1; }
int main() { char infile[] = "pih.fits"; char a, *hptr; int alts[27], ctrl, ialt, iblock, ifix, ikeyrec, iwcs, nkeyrec, nreject, nwcs, relax, stat[NWCSFIX], status; struct wcsprm *wcs; #if defined HAVE_CFITSIO && defined DO_CFITSIO char *header; fitsfile *fptr; #else char keyrec[81], header[288001]; int gotend, 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 (tpih1.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")) == 0) { fprintf(stderr, "ERROR opening %s\n", infile); return 1; } k = 0; nkeyrec = 0; gotend = 0; for (iblock = 0; iblock < 100; iblock++) { for (ikeyrec = 0; ikeyrec < 36; ikeyrec++) { 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\n", nkeyrec); /* Parse the header, allowing all recognized non-standard WCS keywords and * usage. All WCS keyrecords are culled from the header, illegal ones are * reported. */ relax = WCSHDR_all; ctrl = -2; fprintf(stderr, "\nIllegal or extraneous WCS header keyrecords rejected " "by wcspih():\n"); if ((status = wcspih(header, nkeyrec, relax, ctrl, &nreject, &nwcs, &wcs))) { fprintf(stderr, "wcspih ERROR %d: %s.\n", status, wcs_errmsg[status]); } if (!nreject) fprintf(stderr, "(none)\n"); /* List the remaining keyrecords. */ printf("\n\nNon-WCS header keyrecords ignored by wcspih():\n"); hptr = header; while (*hptr) { printf("%.80s\n", hptr); hptr += 80; } #if defined HAVE_CFITSIO && defined DO_CFITSIO free(header); #endif /* Summarize what was found. */ status = wcsidx(nwcs, &wcs, alts); printf("\n\nFound %d alternate coordinate descriptions with indices:\n ", nwcs); for (a = 'A'; a <= 'Z'; a++) { printf("%2c", a); } printf("\n"); for (ialt = 0; ialt < 27; ialt++) { if (alts[ialt] < 0) { printf(" -"); } else { printf("%2d", alts[ialt]); } } printf("\n"); /* Fix non-standard usage and print each of the wcsprm structs. The output * from wcsprt() will be written to an internal buffer and then printed just * to show that it can be done. */ wcsprintf_set(0x0); for (iwcs = 0; iwcs < nwcs; iwcs++) { wcsprintf("\n------------------------------------" "------------------------------------\n"); /* Fix non-standard WCS keyvalues. */ if ((status = wcsfix(7, 0, wcs+iwcs, stat))) { printf("wcsfix ERROR, status returns: ("); for (ifix = 0; ifix < NWCSFIX; ifix++) { printf(ifix ? ", %d" : "%d", stat[ifix]); } printf(")\n\n"); } if ((status = wcsset(wcs+iwcs))) { fprintf(stderr, "wcsset ERROR %d: %s.\n", status, wcs_errmsg[status]); continue; } if ((status = wcsprt(wcs+iwcs))) { fprintf(stderr, "wcsprt ERROR %d: %s.\n", status, wcs_errmsg[status]); } } printf("%s", wcsprintf_buf()); status = wcsvfree(&nwcs, &wcs); return 0; }