[AstroPy] Astropy 0.3 and TPV projection
kyle at anl.gov
Tue Dec 3 15:49:12 EST 2013
Thanks for the explanation David. I wonder if there should be a blurb
describing this, and listing the supported projections (that *are* part of
the WCS standard) in the astropy.wcs docs? Or is something like that
already there and I missed it?
On Tue, Dec 3, 2013 at 2:42 PM, David Shupe <shupe at ipac.caltech.edu> wrote:
> On Dec 3, 2013, at 12:15 PM, Kyle Barbary <kyle at anl.gov> wrote:
> The TPV projection  is also being used by the Dark Energy Survey. I
> think support for TPV would have to be implemented in Mark Calabretta's
> wcslib C library, which underlies astropy.wcs. It seems like programs that
> do support TPV generally use the "other" wcs library . Does anyone know
> if support for TPV is planned for wcslib?
> It would be really nice to have.
> I believe Mark Calabretta is limiting his wcslib to implementing the WCS
> standard. TPV, like SIP , is a registered convention but is not a part
> of the official standard.
> As I understand it, there's some modification done to Calabretta's library
> in astropy.wcs to support SIP. Michael Droettboom is the expert on the
> I have code that translates between SIP and TPV  that I'd like to
> incorporate into astropy.wcs, but there's some paperwork to push through to
> be able to release it.
> David Shupe
>  http://fits.gsfc.nasa.gov/registry/tpvwcs.html
>  http://tdc-www.harvard.edu/software/wcstools/libwcs.subs.html
>  http://fits.gsfc.nasa.gov/registry/sip.html
> http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1363103 also
> at http://web.ipac.caltech.edu/staff/shupe/reprints/SIP_to_PV_SPIE2012.pdf
> AstroPy mailing list
> AstroPy at scipy.org
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