diff options
Diffstat (limited to 'fg21sim/utils/fits.py')
| -rw-r--r-- | fg21sim/utils/fits.py | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/fg21sim/utils/fits.py b/fg21sim/utils/fits.py index 96b5f58..cef70d1 100644 --- a/fg21sim/utils/fits.py +++ b/fg21sim/utils/fits.py @@ -2,7 +2,16 @@ # MIT license """ -FITS utilities. +FITS utilities +-------------- + +read_fits_healpix: + Read the HEALPix map from a FITS file or a BinTableHDU to 1D array + in *RING* ordering. + +write_fits_healpix: + Write the HEALPix map to a FITS file with proper header as well + as the user-provided header. """ from datetime import datetime, timezone @@ -12,6 +21,7 @@ from astropy.io import fits import healpy as hp +# Column formats for FITS binary table # Reference: # http://docs.astropy.org/en/stable/io/fits/usage/table.html#column-creation FITS_COLUMN_FORMATS = { @@ -28,7 +38,7 @@ FITS_COLUMN_FORMATS = { def read_fits_healpix(filename): - """Read the HEALPix map from a FITS file or a HDU to 1D array + """Read the HEALPix map from a FITS file or a BinTableHDU to 1D array in *RING* ordering. Parameters @@ -40,7 +50,7 @@ def read_fits_healpix(filename): Returns ------- data : 1D `~numpy.ndarray` - HEALPix data in *RING* ordering + HEALPix data in *RING* ordering with same dtype as input header : `~astropy.io.fits.Header` Header of the input FITS file |