NAME

       HPXcvt - Reorganise HEALPix data into a 2-D FITS image

SYNOPSIS

       HPXcvt [-C<col>] [-c<sys>] [-n|-r] [-q<quad>] [-x<n|s>]

DESCRIPTION

              [<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.

OPTIONS

       -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.