int wcs_rd2xy(const char* wcsfn, int wcsext,
const char* rdlsfn, const char* xylsfn,
const char* racol, const char* deccol,
anbool forcetan, anbool forcewcslib,
il* fields) {
xylist_t* xyls = NULL;
rdlist_t* rdls = NULL;
anwcs_t* wcs = NULL;
int i;
anbool alloced_fields = FALSE;
int rtn = -1;
// read WCS.
if (forcewcslib) {
wcs = anwcs_open_wcslib(wcsfn, wcsext);
} else if (forcetan) {
wcs = anwcs_open_tan(wcsfn, wcsext);
} else {
wcs = anwcs_open(wcsfn, wcsext);
}
if (!wcs) {
ERROR("Failed to read WCS file \"%s\", extension %i", wcsfn, wcsext);
return -1;
}
// read RDLS.
rdls = rdlist_open(rdlsfn);
if (!rdls) {
ERROR("Failed to read an RA,Dec list from file %s", rdlsfn);
goto bailout;
}
if (racol)
rdlist_set_raname(rdls, racol);
if (deccol)
rdlist_set_decname(rdls, deccol);
// write XYLS.
xyls = xylist_open_for_writing(xylsfn);
if (!xyls) {
ERROR("Failed to open file %s to write XYLS", xylsfn);
goto bailout;
}
if (xylist_write_primary_header(xyls)) {
ERROR("Failed to write header to XYLS file %s", xylsfn);
goto bailout;
}
if (!fields) {
alloced_fields = TRUE;
fields = il_new(16);
}
if (!il_size(fields)) {
// add all fields.
int NF = rdlist_n_fields(rdls);
for (i=1; i<=NF; i++)
il_append(fields, i);
}
for (i=0; i<il_size(fields); i++) {
int fieldnum = il_get(fields, i);
int j;
starxy_t xy;
rd_t rd;
if (!rdlist_read_field_num(rdls, fieldnum, &rd)) {
ERROR("Failed to read rdls file \"%s\" field %i", rdlsfn, fieldnum);
goto bailout;
}
starxy_alloc_data(&xy, rd_n(&rd), FALSE, FALSE);
if (xylist_write_header(xyls)) {
ERROR("Failed to write xyls field header");
goto bailout;
}
for (j=0; j<rd_n(&rd); j++) {
double x, y, ra, dec;
ra = rd_getra (&rd, j);
dec = rd_getdec(&rd, j);
if (anwcs_radec2pixelxy(wcs, ra, dec, &x, &y)) {
ERROR("Point RA,Dec = (%g,%g) projects to the opposite side of the sphere", ra, dec);
starxy_set(&xy, j, NAN, NAN);
continue;
}
starxy_set(&xy, j, x, y);
}
if (xylist_write_field(xyls, &xy)) {
ERROR("Failed to write xyls field");
goto bailout;
}
if (xylist_fix_header(xyls)) {
ERROR("Failed to fix xyls field header");
goto bailout;
}
xylist_next_field(xyls);
starxy_free_data(&xy);
rd_free_data(&rd);
}
if (xylist_fix_primary_header(xyls) ||
xylist_close(xyls)) {
ERROR("Failed to fix header of XYLS file");
goto bailout;
}
xyls = NULL;
if (rdlist_close(rdls)) {
ERROR("Failed to close RDLS file");
goto bailout;
}
rdls = NULL;
rtn = 0;
bailout:
if (alloced_fields)
il_free(fields);
if (rdls)
rdlist_close(rdls);
if (xyls)
xylist_close(xyls);
if (wcs)
anwcs_free(wcs);
return rtn;
}
int wcs_xy2rd(const char* wcsfn, int ext,
const char* xylsfn, const char* rdlsfn,
const char* xcol, const char* ycol,
int forcetan,
int forcewcslib,
il* fields) {
rdlist_t* rdls = NULL;
xylist_t* xyls = NULL;
anwcs_t* wcs = NULL;
int i;
int rtn = -1;
anbool alloced_fields = FALSE;
// read WCS.
if (forcewcslib) {
wcs = anwcs_open_wcslib(wcsfn, ext);
} else if (forcetan) {
wcs = anwcs_open_tan(wcsfn, ext);
} else {
wcs = anwcs_open(wcsfn, ext);
}
if (!wcs) {
ERROR("Failed to read WCS file \"%s\", extension %i", wcsfn, ext);
return -1;
}
// read XYLS.
xyls = xylist_open(xylsfn);
if (!xyls) {
ERROR("Failed to read an xylist from file %s", xylsfn);
goto bailout;
}
xylist_set_include_flux(xyls, FALSE);
xylist_set_include_background(xyls, FALSE);
if (xcol)
xylist_set_xname(xyls, xcol);
if (ycol)
xylist_set_yname(xyls, ycol);
// write RDLS.
rdls = rdlist_open_for_writing(rdlsfn);
if (!rdls) {
ERROR("Failed to open file %s to write RDLS.\n", rdlsfn);
goto bailout;
}
if (rdlist_write_primary_header(rdls)) {
ERROR("Failed to write header to RDLS file %s.\n", rdlsfn);
goto bailout;
}
if (!fields) {
alloced_fields = TRUE;
fields = il_new(16);
}
if (!il_size(fields)) {
// add all fields.
int NF = xylist_n_fields(xyls);
for (i=1; i<=NF; i++)
il_append(fields, i);
}
logverb("Processing %zu extensions...\n", il_size(fields));
for (i=0; i<il_size(fields); i++) {
int fieldind = il_get(fields, i);
starxy_t xy;
rd_t rd;
int j;
if (!xylist_read_field_num(xyls, fieldind, &xy)) {
ERROR("Failed to read xyls file %s, field %i", xylsfn, fieldind);
goto bailout;
}
if (rdlist_write_header(rdls)) {
ERROR("Failed to write rdls field header to %s", rdlsfn);
goto bailout;
}
rd_alloc_data(&rd, starxy_n(&xy));
for (j=0; j<starxy_n(&xy); j++) {
double x, y, ra, dec;
x = starxy_getx(&xy, j);
y = starxy_gety(&xy, j);
anwcs_pixelxy2radec(wcs, x, y, &ra, &dec);
rd_setra (&rd, j, ra);
rd_setdec(&rd, j, dec);
}
if (rdlist_write_field(rdls, &rd)) {
ERROR("Failed to write rdls field to %s", rdlsfn);
goto bailout;
}
rd_free_data(&rd);
starxy_free_data(&xy);
if (rdlist_fix_header(rdls)) {
ERROR("Failed to fix rdls field header for %s", rdlsfn);
goto bailout;
}
rdlist_next_field(rdls);
}
if (rdlist_fix_primary_header(rdls) ||
rdlist_close(rdls)) {
ERROR("Failed to fix header of RDLS file %s", rdlsfn);
goto bailout;
}
rdls = NULL;
if (xylist_close(xyls)) {
ERROR("Failed to close XYLS file %s", xylsfn);
goto bailout;
}
xyls = NULL;
rtn = 0;
bailout:
if (alloced_fields)
il_free(fields);
if (rdls)
rdlist_close(rdls);
if (xyls)
xylist_close(xyls);
if (wcs)
anwcs_free(wcs);
return rtn;
}
int main(int argc, char** args) {
int c;
char* xylsfn = NULL;
char* rdlsfn = NULL;
char* corrfn = NULL;
char* outfn = NULL;
char* xcol = NULL;
char* ycol = NULL;
char* rcol = NULL;
char* dcol = NULL;
xylist_t* xyls = NULL;
rdlist_t* rdls = NULL;
rd_t rd;
starxy_t xy;
int fieldnum = 1;
int N;
double* fieldxy = NULL;
double* xyz = NULL;
sip_t wcs;
int rtn = -1;
int loglvl = LOG_MSG;
int siporder = 0;
int W=0, H=0;
anbool crpix_center = FALSE;
int i;
int doshift = 1;
fits_use_error_system();
while ((c = getopt(argc, args, OPTIONS)) != -1) {
switch (c) {
case 'h':
print_help(args[0]);
exit(0);
case 'W':
W = atoi(optarg);
break;
case 'H':
H = atoi(optarg);
break;
case 'C':
crpix_center = TRUE;
break;
case 's':
siporder = atoi(optarg);
break;
case 'c':
corrfn = optarg;
break;
case 'r':
rdlsfn = optarg;
break;
case 'R':
rcol = optarg;
break;
case 'D':
dcol = optarg;
break;
case 'x':
xylsfn = optarg;
break;
case 'X':
xcol = optarg;
break;
case 'Y':
ycol = optarg;
break;
case 'o':
outfn = optarg;
break;
case 'v':
loglvl++;
break;
}
}
if (optind != argc) {
print_help(args[0]);
exit(-1);
}
if (! ((xylsfn && rdlsfn) || corrfn) || !outfn) {
print_help(args[0]);
exit(-1);
}
log_init(loglvl);
if (corrfn) {
xylsfn = corrfn;
rdlsfn = corrfn;
if (!xcol)
xcol = "FIELD_X";
if (!ycol)
ycol = "FIELD_Y";
if (!rcol)
rcol = "INDEX_RA";
if (!dcol)
dcol = "INDEX_DEC";
}
// read XYLS.
xyls = xylist_open(xylsfn);
if (!xyls) {
ERROR("Failed to read an xylist from file %s", xylsfn);
goto bailout;
}
xylist_set_include_flux(xyls, FALSE);
xylist_set_include_background(xyls, FALSE);
if (xcol)
xylist_set_xname(xyls, xcol);
if (ycol)
xylist_set_yname(xyls, ycol);
// read RDLS.
rdls = rdlist_open(rdlsfn);
if (!rdls) {
ERROR("Failed to read an RA,Dec list from file %s", rdlsfn);
goto bailout;
}
if (rcol)
rdlist_set_raname(rdls, rcol);
if (dcol)
rdlist_set_decname(rdls, dcol);
if (!xylist_read_field_num(xyls, fieldnum, &xy)) {
ERROR("Failed to read xyls file %s, field %i", xylsfn, fieldnum);
goto bailout;
}
if (!rdlist_read_field_num(rdls, fieldnum, &rd)) {
ERROR("Failed to read rdls field %i", fieldnum);
goto bailout;
}
N = starxy_n(&xy);
if (rd_n(&rd) != N) {
ERROR("X,Y list and RA,Dec list must have the same number of entries, "
"but found %i vs %i", N, rd_n(&rd));
goto bailout;
}
logverb("Read %i points from %s and %s\n", N, rdlsfn, xylsfn);
xyz = (double*)malloc(sizeof(double) * 3 * N);
if (!xyz) {
ERROR("Failed to allocate %i xyz coords", N);
goto bailout;
}
radecdeg2xyzarrmany(rd.ra, rd.dec, xyz, N);
fieldxy = starxy_to_xy_array(&xy, NULL);
if (!fieldxy) {
ERROR("Failed to allocate %i xy coords", N);
goto bailout;
}
logverb("Fitting WCS\n");
if (siporder == 0) {
if (fit_tan_wcs(xyz, fieldxy, N, &(wcs.wcstan), NULL)) {
ERROR("Failed to fit for TAN WCS");
goto bailout;
}
} else {
if (W == 0) {
for (i=0; i<N; i++) {
W = MAX(W, (int)ceil(fieldxy[2*i + 0]));
}
}
if (H == 0) {
for (i=0; i<N; i++) {
H = MAX(H, (int)ceil(fieldxy[2*i + 1]));
}
}
logverb("Image size = %i x %i pix\n", W, H);
fit_sip_wcs_2(xyz, fieldxy, NULL, N,
siporder, siporder+1, W, H,
crpix_center, NULL, doshift, &wcs);
}
if (siporder <= 1) {
if (tan_write_to_file(&(wcs.wcstan), outfn)) {
ERROR("Failed to write TAN WCS header to file \"%s\"", outfn);
goto bailout;
}
} else {
if (sip_write_to_file(&wcs, outfn)) {
ERROR("Failed to write SIP WCS header to file \"%s\"", outfn);
goto bailout;
}
}
logverb("Wrote WCS to %s\n", outfn);
starxy_free_data(&xy);
rd_free_data(&rd);
rtn = 0;
bailout:
if (rdls)
rdlist_close(rdls);
if (xyls)
xylist_close(xyls);
if (fieldxy)
free(fieldxy);
if (xyz)
free(xyz);
return rtn;
}
