.\" DO NOT MODIFY THIS FILE! It was generated by help2man 1.40.4.
.TH HPXCVT "1" "January 2021" "HPXcvt 7.4" "User Commands"
.SH NAME
HPXcvt \- Reorganise HEALPix data into a 2-D FITS image
.SH SYNOPSIS
.B HPXcvt
[\fI-C
\fR] [\fI-c\fR] [\fI-n|-r\fR] [\fI-q\fR] [\fI-x\fR]
.SH DESCRIPTION
.IP
[ []]
.PP
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.
.SH OPTIONS
.TP
\fB\-C\fR
Binary table column number from which to read data,
default 1 (n.b. WMAP exclusion masks are in column 2).
.TP
\fB\-c\fR
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).
.TP
\fB\-n\fR|\-r
Assume n(ested) or r(ing) organization if the ORDERING
keyword is absent from the input FITS header.
.TP
\fB\-q\fR
Recentre longitude at quad(mod 4) x 90 degrees, where
quad(rant) is an integer.
.TP
\fB\-x\fR
Use a north\-polar or south\-polar layout (XPH).