On Wed, May 6, 2015 at 11:43 PM, Jody Garnett <jody.garn...@gmail.com>
wrote:
>
> I am quite discouraged by the regression shown with GEOS-7009
> <https://osgeo-org.atlassian.net/browse/GEOS-7009> - in particular the
> same WMS request produces two different GetMap results (see the issue
> screen snaps) I am not sure what to make of that as all our rendering tests
> pass at the GeoTools level.
>
The difference seems rather severe, even if it happened before the
rescaling, we are talking about a shift of 3 pixels up, 1 left, that seems
unlikely to be just a numerical glitch.
Trying to make a guess, and assuming the obvious math is taken care of, how
about matrix inversion? We do a lot of transformation inversion in our code.
Cheers
Andrea
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