GitHub - jhunkeler/pywcs: WCS transformations following the SIP conventions, Paper IV.

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doc		doc
examples		examples
lib		lib
patches		patches
src		src
wcslib		wcslib
.gitattributes		.gitattributes
CHANGELOG		CHANGELOG
LICENSE		LICENSE
MANIFEST.in		MANIFEST.in
README		README
defsetup.py		defsetup.py
distribute_setup.py		distribute_setup.py
hooks.py		hooks.py
patch_wcslib.sh		patch_wcslib.sh
setup.cfg		setup.cfg
setup.py		setup.py
stsci_distutils_hack.py		stsci_distutils_hack.py

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Introduction
------------

pywcs is a set of routines for handling the FITS World Coordinate
System (WCS) standard.  It is a thin wrapper around the high- and
mid-level interfaces of Dr. Mark Calabretta's WCSLIB available here:

  http://www.atnf.csiro.au/people/mcalabre/WCS/

In addition, there are extensions (written in C) to support Spitzer
Simple Imaging Polynomial (SIP) convention keywords and Paper IV table
lookup distortion.

Please direct any questions to:

  help@stsci.edu

Build instructions
------------------

pywcs includes its own copy of WCSLIB.

pywcs requires:

  - Numpy 1.3 or later
  - pyfits 1.4 or later

pywcs uses the standard Python distutils system to build and install
itself.  From the command line run::

    python setup.py install

to install pywcs.

Building documentation
----------------------

Optionally, the documentation can be built using Sphinx
(http://sphinx.pocoo.org).

After installing pywcs, 'cd' into the 'doc' directory and::

    make html

The documentation is also available online at:

    http://stsdas.stsci.edu/astrolib/pywcs/index.html