get_fits_size

This routine reads the number of pixels, the resolution parameter and the pixel ordering of a FITS file containing a HEALPix map.

Location in HEALPix directory tree: src/C/subs/chealpix.c 

FORMAT

long get_fits_size(char *filename, long *nside, char *ordering)

ARGUMENTS

name&dimensionality	kind	in/out	description
get_fits_size	long	OUT	number of pixels the FITS file
filename	char	IN	filename of the FITS-file containing the HEALPix map.
ordering	char	OUT	pixel ordering, either 'RING' or 'NESTED'
nside	long	OUT	Healpix resolution parameter Nside

EXAMPLE:

long npix, nside ;
char file[180]=”map.fits” ;
char order[10] ;
npix= get_fits_size(file, &nside, order)

Returns in npix the number of pixel in the file 'map.fits', and read in nside or order its resolution parameter or ordering scheme

RELATED ROUTINES

This section lists the routines related to get_fits_size

read_healpix_map

subroutine to read HEALPix maps

write_healpix_map

subroutine to write HEALPix maps