[gdal-dev] Strange behaviour of gdal_translate

Antonio Valentino antonio.valentino at tiscali.it
Fri May 29 16:53:04 EDT 2009


Il giorno Fri, 29 May 2009 20:17:07 +0200
Even Rouault <even.rouault at mines-paris.org> ha scritto:

> Antonio,
> 
> The behaviour you get is more or less expected. Generally in GDAL,
> either you have a geotransform with its projection, either you have
> GCPs with their associated projection. But having both at the same
> time isn't really supported. The fact that the VRT seems to accept
> that is more an accident than a feature I think.
> As far as GeoTIFF is concerned, it's not a restriction of the driver,
> as the specification clearly doesn't support that. To make it short :
> you can have only one GeoTag that defines the projection, and you can
> have, either a tiepoint and the pixel size, either the geotransform
> matrix, either a list of GCP.  See
> http://www.remotesensing.org/geotiff/spec/geotiff2.6.html#2.6.1
> 
> Even

OK, thanks Even.

-- 
Antonio Valentino


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