[AstroPy] got flux-conservative rebinning?

David Berry d.berry@jach.hawaii....
Thu Apr 19 14:36:45 CDT 2012


On 19 April 2012 18:50, Marshall Perrin <mperrin@stsci.edu> wrote:
>
>
> While we're fishing for useful algorithms, does anyone have a convenient
> implementation of flux-conservative rebinning? The image interpolations in
>  scipy.ndimage are not conservative.  Montage can do this, of course, but
> that seems like overkill (and adds a lot of interface complexity) if I just
> want to scale an image by 75% while conserving energy...  Thanks in
> advance,

pyast (https://github.com/timj/starlink-pyast) can do this. For instance:

import starlink.Ast

#  Create an object describing a 2D transformation that zoom by a
factor of 0.7 about the origin of a 2M


More information about the AstroPy mailing list