[gdal-dev] Howto change geo transform parameters in dataset.

[Oliver Eichler]

> 
> Updating the geotransform should work in-place for GeoTIFF format.  This
> may be a relatively new feature.  I will note that the file needs to be
> open in update mode. So if opening an existing file use GA_Update as
> the access mode.
> 

Arrgh, GA_Update! Stupid me. I was so focused on how to change the
offset that I forgot to check the obvious in GDALOpen first. Now it
works like a charm.  Sorry for the fuzz.

Oliver