[gdal-dev] Overview scales

Dear list, I'd like to use overviews for building image pyramids with a scale reduction of 2 for photogrammetric applications. While GDALDataset::BuildOverviews allows for the specification of "overview decimation factors" as integers only, GDAL seems to interpret these factors as hints only, and

Re: [gdal-dev] GML (created via ogr2ogr) validation with OpenGIS XSD

Hi Even, Thanks a lot for quick and detailed answer. So simple I didn't thought about it ... what an idiot ! Subsidiary questions : how can I validate my GML file to be sure there is only Simple Features (like no self-intersection for instance) ? Thanks a lot for your help. PS: I use xmllint t

Re: [gdal-dev] Amplitude virtual bands for complex datasets ?

Dear Even, Sorry for my late answer, I was onto something different yesterday. I agree with you, and I did change all function declarations in order to "export" them in the DLL. Thus, all functions in both pixfunplugin.c and pixelfunctions.c are now declared as "C" functions with the CPL_DLL expo