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wtfits.c
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Sun, Dec 1, 21:37

wtfits.c
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#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include "fitsio.h"
#include "lt.h"
/*
Simple write binary table fits subroutines based on the CFITSIO package
Author: EJ
Date: March 2010
********************************************************************
* Create a FITS primary data unit containing a binary table
* Write in double array
* Parameters :
* - filename
* - tbl[nb_col][nb_row] : image to be written
*/
int wrf_tfits(char *filename,
double **tbl, char* ttype[], int nx, long int ny)
{
fitsfile *fptr; /* pointer to the FITS file, defined in fitsio.h */
int status, ii, jj;
LONGLONG frow, felem;
float bzero=0.,bscale=1.;
char origin[10];
// initialize FITS table parameters
int tbltype=BINARY_TBL;
LONGLONG naxis2=0; // initial number of rows
int tfields=nx;
char **tform;
char chr;
// Create the TFORM list
tform = (char **) malloc(nx * sizeof(char *));
for( ii = 0; ii < nx; ii++ )
{
tform[ii] = (char *) malloc(8 * sizeof(char));
strcpy(tform[ii], "E");
}
// Replace non FITS standard characters in TTYPE list [0-9] [A-Z] [a-z]
for( ii = 0; ii < nx; ii++ )
{
chop(ttype[ii]); // remove trailing blanks
for( jj = 0; jj < strlen(ttype[ii]); jj++ )
{
chr = ttype[ii][jj];
if( ! ((chr>=48 && chr<=57) || (chr>=65 && chr<=90) || (chr>=97 && chr<=122)) )
ttype[ii][jj] = '_';
}
}
printf("WRITE: TFITS file: %s[%d,%ld]\n", filename,nx,ny);
remove(filename); // Delete old file if it already exists
status = CREATE_DISK_FILE; // initialize status before calling fitsio routines
if (fits_create_file(&fptr, filename, &status)) // create new FITS file
printerror( status ); // call printerror if error occurs
if ( fits_create_tbl(fptr, tbltype, naxis2, tfields, ttype, tform, NULL, NULL, &status) )
printerror( status );
// Write columns
for( ii = 0; ii < nx; ii++ )
{
frow = 1; // first row to write
felem = 1; // first element to write
if( fits_write_col(fptr, TDOUBLE, ii+1, frow, felem, ny, tbl[ii], &status) )
printerror( status );
}
strcpy(origin,"JPK-SOFT");
/* write another optional keyword to the header */
if ( fits_update_key(fptr, TFLOAT, "BZERO", &bzero, "BZERO", &status) )
printerror( status );
if ( fits_update_key(fptr, TFLOAT, "BSCALE", &bscale, "BSCALE", &status) )
printerror( status );
if ( fits_update_key(fptr, TSTRING, "ORIGIN", &origin, "ORIGIN", &status) )
printerror( status );
if ( fits_write_date(fptr, &status) )
printerror( status );
if ( fits_close_file(fptr, &status) ) /* close the file */
printerror( status );
return 0;
}

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