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

[Johannes Paul]

Hello,
Yes i would need a polygon with the raster footprint.
Thanks


Le ven. 14 oct. 2022 à 10:01, Laurențiu Nicola via gdal-dev <
gdal-dev at lists.osgeo.org> a écrit :

> 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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