[AstroPy] Regrid images

[Neil Crighton]

Montage is excellent (so is Tom's wrapper), but in my experience it's
prohibitively slow for very large images.  SWARP (
http://www.astromatic.net/software/swarp) works well on bigger images.

Neil


On 1 November 2013 02:13, Thomas Robitaille <thomas.robitaille at gmail.com>wrote:

> Just to add to what's already been said, there is a Python wrapper
> available for the Montage toolkit:
>
> http://www.astropy.org/montage-wrapper/
>
> which does flux-conserving reprojection. I replied to Ruben about
> this, and previously forgot to cc this list.
>
> Cheers,
> Tom
>
>
> On 31 October 2013 15:47, Perry Greenfield <stsci.perry at gmail.com> wrote:
> > I'd add that regridding is a complicated topic. There are many
> alternative approaches to it, each with a different emphasis on what is
> important to optimize. There is no single approach that optimizes every
> aspect. And then there is the added complication of how regridding handles
> the input of how coordinates are transformed. Hopefully these will all be
> able to use the new WCS stuff.
> >
> > Perry
> >
> > On Oct 31, 2013, at 10:30 AM, Michael Droettboom wrote:
> >
> >> On 10/29/2013 11:18 AM, Demitri Muna wrote:
> >>> Hi,
> >>>
> >>> Glad to hear there are several solutions in astropy to regrid an image
> as that’s certainly very useful.
> >>>
> >>> Somewhat concerned that there are several solutions in astropy to
> regrid an image.
> >>>
> >>
> >> Let me allay your concerns somewhat: none of these suggested solutions
> >> are actually in astropy.  As is one of the explicit goals of astropy,
> >> hopefully the best parts of each of these can become the "one true way
> >> to do it" within astropy itself overtime.
> >>
> >> Mike
> >>
> >> --
> >>                    _
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> >> |  ||(_| |(_|(/_| |_/|(_)(/_|_ |_|_)(_)(_)| | |
> >>
> >> http://www.droettboom.com
> >>
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