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/* File matchcat.c
* January 10, 2007
* By Jessica Mink, Harvard-Smithsonian Center for Astrophysics
* Send bug reports to jmink@cfa.harvard.edu
Copyright (C) 2006-2007
Smithsonian Astrophysical Observatory, Cambridge, MA USA
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include "libwcs/wcscat.h"
#include "libwcs/wcs.h"
#define NMAXCAT 1500000
static int verbose = 0; /* verbose/debugging flag */
static double matchrad = 5.0; /* Initial match radius is 5 arcseconds */
int version = 0; /* If 1, print only program name and version */
static void usage();
static char *RevMsg = "MATCHCAT WCSTools 3.9.7, 26 April 2022, Jessica Mink (jmink@cfa.harvard.edu)";
main (ac, av)
int ac;
char **av;
{
char *fn;
char *str;
char outfile[256];
FILE *fcat;
double delta, dist;
double ra[NMAXCAT], dec[NMAXCAT];
double ra2[NMAXCAT], dra[NMAXCAT], ddec[NMAXCAT];
float as[NMAXCAT], v[NMAXCAT], r[NMAXCAT];
float dv[NMAXCAT], dr[NMAXCAT], class[NMAXCAT];
int id[NMAXCAT];
char line[1000];
char line1[1000];
char line2[1000];
int ncmax = 1000;
struct Tokens *tokens;
int ltok, ntok;
int i, num, j, ij, nid;
char rastr[32], decstr[32], mvstr[8], mrstr[8], clstr[8];
/* Check for help or version command first */
str = *(av+1);
if (!str || !strcmp (str, "help") || !strcmp (str, "-help"))
usage();
if (!strcmp (str, "version") || !strcmp (str, "-version")) {
version = 1;
usage();
}
/* crack arguments */
for (av++; --ac > 0 && *(str = *av) == '-'; av++) {
char c;
while (c = *++str)
switch (c) {
case 'v': /* more verbosity */
verbose++;
break;
case 'r': /* match radius in arcseconds */
if (ac > 1)
matchrad = atof (*++av);
break;
default:
usage();
break;
}
}
/* There are ac remaining file names starting at av[0] */
if (ac == 0)
usage ();
while (ac-- > 0) {
fn = *av++;
/* Open ASCII catalog */
if (!(fcat = fopen (fn, "r"))) {
fprintf (stderr,"ASCII catalog %s cannot be read\n", fn);
exit (1);
}
/* Ignore first two lines */
if (fgets (line1, ncmax, fcat) == NULL) {
fprintf (stderr,"Cannot read 1st line of ASCII catalog %sd\n", fn);
fclose (fcat);
exit (1);
}
if (fgets (line2, ncmax, fcat) == NULL) {
fprintf (stderr,"Cannot read 2nd line of ASCII catalog %sd\n", fn);
fclose (fcat);
exit (1);
}
/* Read position information into arrays */
i = 0;
while (fgets (line, ncmax, fcat) != NULL) {
ntok = setoken (tokens, line, NULL);
ltok = getoken (tokens, 1, rastr, 32);
ltok = getoken (tokens, 2, decstr, 32);
ltok = getoken (tokens, 3, mvstr, 8);
ltok = getoken (tokens, 4, mrstr, 8);
ltok = getoken (tokens, 5, clstr, 8);
as[i] = -1;
v[i] = atof (mvstr);
r[i] = atof (mrstr);
class[i] = atoi (clstr);
dec[i] = str2dec (decstr);
ra[i] = str2ra (rastr) * cosdeg (dec[i]);
ra2[i] = str2ra (rastr);
i++;
if (i > NMAXCAT)
break;
}
fclose (fcat);
/* Set match radius in degrees */
delta = 5.0 / 3600.0;
num = i - 1;
nid = 0;
/* Read through file */
for (i = 0; i < num; i++) {
/* If current star has not been matched */
if (id[i] <= 0) {
nid = nid + 1;
id[i] = nid;
/* Check for matching stars */
for (j = 1; j < 1000; j++) {
ij = i + j;
if (ij >= num)
break;
/* Check RA distance first */
if ((ra[ij] - ra[i]) > delta)
break;
/* If RA close enough, check radial distance */
dist = wcsdist (ra2[i],dec[i],ra2[ij],dec[ij]);
if (dist <= delta) {
id[ij] = nid;
as[ij] = 3600.0 * dist;
dv[ij] = v[i] - v[ij];
dr[ij] = r[i] - r[ij];
dra[ij] = 3600.0 * (ra[i] - ra[ij]);
ddec[ij] = 3600.0 * (dec[i] - dec[ij]);
}
}
}
}
/* Open output file */
strcpy (outfile, fn);
strcat (outfile, ".match");
fcat = fopen (outfile, "w");
if (fcat == NULL) {
fprintf (stderr, "Cannot write file %s\n", outfile);
exit (1);
}
/* Print header lines */
fprintf (fcat, "%s", line1);
fprintf (fcat, "%s", line2);
/* Print catalog */
for (i = 0; i < num; i++) {
ra2str (rastr, 32, ra2[i], 3);
dec2str (decstr, 32, dec[i], 2);
fprintf (fcat, "%7d %s %s %6.3f %6.3f %6.3f %6.3f %6.3f ",
id[i], rastr, decstr, r[i], v[i], dr[i], dv[i], class[i]);
fprintf (fcat, "%9.6f %9.6f %9.6f %9.6f %9.6f %7d\n",
as[i], ra2[i], dec[i], dra[i], ddec[i], i);
}
fclose (fcat);
}
exit (0);
}
static void
usage ()
{
fprintf (stderr,"%s\n",RevMsg);
if (version)
exit (-1);
fprintf (stderr,"Match catalog entries after combining, RA-sorting them\n");
fprintf (stderr,"usage: matchcat [-v][-r rad] file.cat ...\n");
fprintf (stderr," -r rad: Combine entries within this arcsecond distance\n");
fprintf (stderr," -v: Verbose\n");
exit (1);
}
/*
* Jan 10 2007 Declare RevMsg static, not const
*/
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