[gdal-dev] C++ Getting OGRGeometry out of GDALDataset

[Laurențiu Nicola]

Hi Mats,

Vector and raster datasets are pretty much different things in GDAL. And generally it would be a good idea to check whether e.g. GetLayer actually returns a pointer or nullptr.

What exactly do you mean by "associated OGRPolygon"? Do you want a polygon with the same footprint as the raster?

Laurentiu

On Fri, Oct 14, 2022, at 10:51, Johannes Paul wrote:
> Hello,
> Is there a way to get the OGRGeometry object out of a GDALDataset object in c++?
> My GDALDataset is a raster and i would like to get the associated OGRPolygon out of it.
> I've used:
> srcDataset->GetLayer(0)->GetNextFeature()->GetGeometryRef()->toPolygon()
> However i keep getting segmentation faults error.
> Any help would be appreciated.
> Thanks
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