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).