[gdal-dev] Changing pixel values of GDAL VRT

Even Rouault even.rouault at spatialys.com
Tue Dec 15 09:14:15 PST 2015

Le mardi 15 décembre 2015 17:23:44, cl a écrit :
> Is it possible to manipulate the pixel values of a GDAL VRT and, if so,
> how? The original data must remain unchanged.
> I have a dataset which might be a bit rotated so that there are no data
> values on the edges. I use region growing to find that parts on the edge to
> not touch no data values in the actual area. I want to interpolate in the
> actual area in a next step. Sometimes I might have e.g. a very large
> dataset or ASCII data which can not be overwritten.

So basically you'd want a http://gdal.org/nearblack.html that would work on 
the fly ?

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