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WCS transformations following the SIP conventions, Paper IV.
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spacetelescope/pywcs
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All of the functionality of Pywcs is now available in Astropy as the astropy.wcs package. This repository is deprecated. Current documentation is at: http://docs.astropy.org/en/stable/wcs/index.html The astropy repository is on github at https://github.com/astropy/astropy 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
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WCS transformations following the SIP conventions, Paper IV.