[gdal-dev] GDAL Arbitrary Warp Problems

[Michael Aschenbeck]

Thanks Even, this was my lone hang-up and got it me on the right track!


On Tue, Jul 15, 2014 at 1:00 PM, Even Rouault <even.rouault at mines-paris.org>
wrote:

> Le mardi 15 juillet 2014 20:52:16, Michael Aschenbeck a écrit :
> > Thanks for your response.
> >
> > For my application, I will be creating the transformation on the fly.  It
> > will be a non-standard transformation.  Unless I'm mistaken, I don't
> > believe this can be done with gdalwarp directly.
> >
> > Also, I am under the assumption that its source code is introduced in the
> > tutorial I am working off of (http://www.gdal.org/warptut.html).  Yet,
> this
> > just introduces a standard transformation, not a custom one.  This is why
> > I'm having trouble.
>
> When doing custom stuff, you often need to step into GDAL code to
> understand
> better how things are interacting together.
> Actually looking at your identityTransform and GDALSuggestedWarpOutput2(),
> I
> think there's at least something you should fix. You should initialize all
> the
> nPointcount elements of then panSuccess array to 1.
>
> Even
>
> --
> Geospatial professional services
> http://even.rouault.free.fr/services.html
>
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