HPXcvt - Reorganise HEALPix data into a 2-D FITS image
HPXcvt [-C<col>] [-c<sys>]
[-n|-r] [-q<quad>] [-x<n|s>]
- [<infile> [<outfile>]]
HPXcvt reorganises HEALPix data into a 2-D FITS image with HPX
coordinate system. The input data may be stored in a FITS file as a primary
image or image extension, or as a binary table extension. Both NESTED and
RING pixel indices are supported. The input and output files may be omitted
or specified as "-" to indicate stdin and stdout respectively.
- -C<col>
- Binary table column number from which to read data, default 1 (n.b. WMAP
exclusion masks are in column 2).
- -c<sys>
- Specify the coordinate system to be used to label the output map if the
COORDSYS keyword is absent from the input FITS header. Recognised values
are g (galactic), e (ecliptic) or q (equatorial).
- -n|-r
- Assume n(ested) or r(ing) organization if the ORDERING keyword is absent
from the input FITS header.
- -q<quad>
- Recentre longitude at quad(mod 4) x 90 degrees, where quad(rant) is an
integer.
- -x<n|s>
- Use a north-polar or south-polar layout (XPH).