read_fits_partial
This IDL facility reads FITS file containing incomplete (polarized) sky map.
Location in HEALPix directory tree: src/idl/fits/read_fits_partial.pro
FORMAT
QUALIFIERS
-
File
- name of a FITS file in which the map is to be written
-
Pixel
- (OUT: INT, LONG or LONG64 vector of length ),
index of observed (or valid) pixels
-
IQU
- (OUT: FLOAT or DOUBLE array of size (, )),
value of I or I,Q,U signal in each observed pixel
KEYWORDS
-
COORDSYS=
- (OUT, optional),
returns on output the astrophysical coordinate system used,
as read from FITS header (value of keywords COORDSYS or SKYCOORD)
-
EXTENSION=
- (IN, optional),
0 based number of extension to read. default:0
-
HDR=
- (OUT, optional),
String array containing the primary header.
-
HELP=
- (IN, optional),
if set, an extensive help is displayed, and no file is read
-
NSIDE=
- (OUT, optional),
returns on output the HEALPix resolution parameter, as read
from the FITS header. Set to -1 if not found
-
ORDERING=
- (OUT, optional),
returns on output the pixel ordering, as read from the FITS
header. Either 'RING' or 'NESTED' or ' ' (if not found).
-
UNITS=
- (OUT, optional),
physical units of each column of the table (except PIXEL)
-
XHDR=
- (OUT, optional),
String array containing the extension header.
DESCRIPTION
For more information on the FITS file format supported in HEALPix,
including the one implemented in read_fits_partial,
see https://healpix.sourceforge.io/data/examples/healpix_fits_specs.pdf
RELATED ROUTINES
This section lists the routines related to read_fits_partial
-
idl
- version 6.4 or more is necessary to run read_fits_partial
-
write_fits_partial
- This HEALPix IDL
facility can be used to generate the FITS format partial maps complient
with HEALPix convention and readable by read_fits_partial.
-
read_fits_cut4,
read_fits_partial,
read_fits_map
-
read_tqu,
read_fits_s
- HEALPix IDL routines to read cut-sky maps and partial maps, full-sky maps, polarized full-sky maps and
arbitrary data sets from FITS files
-
sxpar
- This IDL routine (included in HEALPix package) can be
used to extract FITS keywords from the header(s) HDR or XHDR read with read_fits_partial.
Version 3.82, 2022-07-28