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// Author and Copyright: Johannes Gajdosik, 2007
// License: GPL
/*
g++ -O2 ParseNomad.C -o ParseNomad
*/
#undef NDEBUG
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
const char *nomad_path = "/sda1/nomad1";
struct Short_NOMAD_Record {
int ra,spd,pm_ra,pm_spd;
short int b,v,r;
unsigned short int flags;
};
#define WRITE_SIZE 10000
#define FILE_SIZE_LIMIT 1160000000
class Accumulator {
public:
Accumulator(void);
~Accumulator(void);
void add(int ra,int spd,int pm_ra,int pm_spd,
short int b,short int v,short int r,
unsigned short int flags);
private:
void flush(bool close_in_any_case);
Short_NOMAD_Record *buff;
Short_NOMAD_Record *p;
int bytes_written; // in current file
int files_written;
FILE *f;
};
Accumulator::Accumulator(void) {
buff = new Short_NOMAD_Record[WRITE_SIZE];
assert(buff);
p = buff;
bytes_written = 0;
files_written = 0;
f = 0;
}
Accumulator::~Accumulator(void) {
flush(true);
delete buff;
}
void Accumulator::add(int ra,int spd,int pm_ra,int pm_spd,
short int b,short int v,short int r,
unsigned short int flags) {
p->ra = ra;
p->spd = spd;
p->pm_ra = pm_ra;
p->pm_spd = pm_spd;
p->b = b;
p->v = v;
p->r = r;
p->flags = flags;
p++;
if (p >= buff+WRITE_SIZE) flush(false);
}
void Accumulator::flush(bool close_in_any_case) {
if (f == 0) {
char fname[1024];
snprintf(fname,sizeof(fname),"Nomad%02d.sml",files_written);
f = fopen(fname,"wb");
if (f == 0) {
fprintf(stderr,"could not open %s for writing\n",fname);
exit(1);
}
}
if (p > buff) {
const int rc = fwrite(buff,sizeof(Short_NOMAD_Record),p-buff,f);
if (rc != p-buff) {
fprintf(stderr,"fwrite failed\n");
exit(1);
}
bytes_written += (p-buff)*sizeof(Short_NOMAD_Record);
p = buff;
}
if (bytes_written >= FILE_SIZE_LIMIT || close_in_any_case) {
fclose(f);
f = 0;
bytes_written = 0;
files_written++;
}
}
const unsigned short int SHORT_ASTSRCBIT0 = 0x0001; // Astrometry source bit 0
const unsigned short int SHORT_ASTSRCBIT1 = 0x0002; // Astrometry source bit 1
const unsigned short int SHORT_ASTSRCBIT2 = 0x0004; // Astrometry source bit 2
const unsigned short int SHORT_UBBIT = 0x0008;
const unsigned short int SHORT_TMBIT = 0x0010;
const unsigned short int SHORT_XRBIT = 0x0020;
const unsigned short int SHORT_IUCBIT = 0x0040;
const unsigned short int SHORT_ITYBIT = 0x0080;
const unsigned short int SHORT_OMAGBIT = 0x0100;
const unsigned short int SHORT_EMAGBIT = 0x0200;
const unsigned short int SHORT_TMONLY = 0x0400;
const unsigned short int SHORT_SPIKE = 0x0800;
const unsigned short int SHORT_TYCONF = 0x1000;
const unsigned short int SHORT_BSCONF = 0x2000;
const unsigned short int SHORT_BSART = 0x4000;
const unsigned short int SHORT_USEME = 0x8000;
struct NOMAD_Record {
int ra,spd,dev_ra,dev_spd;
int pm_ra,pm_spd,dev_pm_ra,dev_pm_spd;
int epoch_ra,epoch_spd;
int b,v,r,j,h,k;
int usno_id,_two_mass_id,yb6_id,ucac2_id,tycho2_id;
int flags;
};
#define READ_SIZE 100000
static NOMAD_Record buff[READ_SIZE];
const int ASTSRCBIT0 = 0x00000001; // Astrometry source bit 0
const int ASTSRCBIT1 = 0x00000002; // Astrometry source bit 1
const int ASTSRCBIT2 = 0x00000004; // Astrometry source bit 2
const int UBBIT = 0x00001000; // 469314198 UBBIT Fails Blaise's test for USNO-B1.0 star
const int TMBIT = 0x00002000; // 123508070 TMBIT Fails Roc's test for clean 2MASS star
const int YBBIT = 0x00004000; // 0 YBBIT (unused)
const int UCBIT = 0x00008000; // 0 UCBIT (unused)
const int TYBIT = 0x00010000; // 484333 TYBIT Astrometry comes from Tycho2 cat
const int XRBIT = 0x00020000; // 2289 XRBIT Alt correlations for same (RA,Dec)
const int ITMBIT = 0x00040000; // 0 ITMBIT Alt correlations for same 2MASS ID
const int IUCBIT = 0x00080000; // 19 IUCBIT Alt correlations for same UCAC-2 ID
const int ITYBIT = 0x00100000; // 45 ITYBIT Alt correlations for same Tycho2 ID
const int OMAGBIT = 0x00200000; // 45066488 OMAGBIT Blue magnitude from O (not J) plate
const int EMAGBIT = 0x00400000; // 87873547 EMAGBIT Red magnitude from E (not F) plate
const int TMONLY = 0x00800000; // 61787163 TMONLY Object found only in 2MASS cat
const int HIPAST = 0x01000000; // 120242 HIPAST Ast from Hipparcos (not Tycho2) cat
const int SPIKE = 0x02000000; // 18031305 SPIKE USNO-B1.0 diffraction spike bit set
const int TYCONF = 0x04000000; // 4468 TYCONF Tycho2 confusion flag
const int BSCONF = 0x08000000; // 1076296 BSCONF Bright star has nearby faint source
const int BSART = 0x10000000; // 161579 BSART Faint source is bright star artifact
const int USEME = 0x20000000; // 16117123 USEME Recommended astrometric standard
const int EXCAT = 0x40000000; // 0 EXCAT External, non-astrometric object
int main(int argc,char *argv[]) {
Accumulator accu;
int total_read = 0;
char fname[1024];
for (int i=0;i<180;i++) {
for (int j=0;j<10;j++) {
const int rc = snprintf(fname,sizeof(fname),
"%s/%03d/m%03d%d.cat",nomad_path,i,i,j);
assert (rc < sizeof(fname));
FILE *f;
f = fopen(fname,"rb");
if (f == 0) {
fprintf(stderr,"Could not open file \"%s\".\n",fname);
exit(2);
}
int count = 0;
do {
count = fread(buff,sizeof(NOMAD_Record),READ_SIZE,f);
total_read += count;
printf("\rfread(%s,...) returned %6d, total_read = %8d",
fname,count,total_read);
fflush(stdout);
for (int k=0;k<count;k++) {
if ((buff[k].v <= 19500 ||
buff[k].b <= 19500 ||
buff[k].r <= 19500) &&
buff[k].tycho2_id == 0) {
if (buff[k].flags & (YBBIT|UCBIT|ITMBIT|TYBIT|HIPAST|EXCAT)) {
fprintf(stderr,"\n %03d%d,%d: error 1\n",i,j,k);
} else if (buff[k].v <= 0 || buff[k].b <= 0 || buff[k].r <= 0) {
fprintf(stderr,"\n %03d%d,%d: error 2\n",i,j,k);
} else {
unsigned short flags = 0;
if (buff[k].flags & ASTSRCBIT0) flags |= SHORT_ASTSRCBIT0;
if (buff[k].flags & ASTSRCBIT1) flags |= SHORT_ASTSRCBIT1;
if (buff[k].flags & ASTSRCBIT2) flags |= SHORT_ASTSRCBIT2;
if (buff[k].flags & UBBIT ) flags |= SHORT_UBBIT;
if (buff[k].flags & TMBIT ) flags |= SHORT_TMBIT;
if (buff[k].flags & XRBIT ) flags |= SHORT_XRBIT;
if (buff[k].flags & IUCBIT ) flags |= SHORT_IUCBIT;
if (buff[k].flags & ITYBIT ) flags |= SHORT_ITYBIT;
if (buff[k].flags & OMAGBIT) flags |= SHORT_OMAGBIT;
if (buff[k].flags & EMAGBIT) flags |= SHORT_EMAGBIT;
if (buff[k].flags & TMONLY ) flags |= SHORT_TMONLY;
if (buff[k].flags & SPIKE ) flags |= SHORT_SPIKE;
if (buff[k].flags & TYCONF ) flags |= SHORT_TYCONF;
if (buff[k].flags & BSCONF ) flags |= SHORT_BSCONF;
if (buff[k].flags & BSART ) flags |= SHORT_BSART;
if (buff[k].flags & USEME ) flags |= SHORT_USEME;
accu.add(buff[k].ra,buff[k].spd,buff[k].pm_ra,buff[k].pm_spd,
(short int)(buff[k].b > 30000 ? 30000 : buff[k].b),
(short int)(buff[k].v > 30000 ? 30000 : buff[k].v),
(short int)(buff[k].r > 30000 ? 30000 : buff[k].r),
flags);
}
}
}
} while (count == READ_SIZE);
printf("\n");
fclose(f);
}
}
return 0;
}
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