Hi, All right, TestCapability(ogr.OLCFastSpatialFilter) is the answer gdal - How to check if FlatGeobuf layer has a spatial index? - Geographic Information Systems Stack Exchange<https://gis.stackexchange.com/questions/488511/how-to-check-if-flatgeobuf-layer-has-a-spatial-index>.
-Jukka Rahkonen- Lähettäjä: Rahkonen Jukka Lähetetty: perjantai 6. joulukuuta 2024 15.12 Vastaanottaja: Even Rouault <even.roua...@spatialys.com>; 'gdal-dev@lists.osgeo.org' (gdal-dev@lists.osgeo.org) <gdal-dev@lists.osgeo.org> Aihe: Re: [gdal-dev] Where to find a FlatGeobuf test file? Hi, Has there been a change in writing the layer extent? I thought that the test https://github.com/OSGeo/gdal/blob/e4d1f7ff474ceeffd69b1ceef3fa635428788e8c/autotest/ogr/ogr_flatgeobuf.py#L182 is testing with TestCapability(ogr.OLCFastGetExtent) if spatial index exists. At least the test file data/testfgb/poly_no_index.fgb shows false for this capability. I am not really interested in the layer extent, what I want to know is how can I check if an existing FlatGeobuf file has spatial index or not. -Jukka- Lähettäjä: Even Rouault <even.roua...@spatialys.com<mailto:even.roua...@spatialys.com>> Lähetetty: perjantai 6. joulukuuta 2024 12.37 Vastaanottaja: Rahkonen Jukka <jukka.rahko...@maanmittauslaitos.fi<mailto:jukka.rahko...@maanmittauslaitos.fi>>; 'gdal-dev@lists.osgeo.org' (gdal-dev@lists.osgeo.org<mailto:gdal-dev@lists.osgeo.org>) <gdal-dev@lists.osgeo.org<mailto:gdal-dev@lists.osgeo.org>> Aihe: Re: [gdal-dev] Where to find a FlatGeobuf test file? Hi Jukka, Le 06/12/2024 à 11:13, Rahkonen Jukka a écrit : Next question: Why this gives true for me? OLCFastGetExtent != OLCFastSpatialFilter The layer extent is written in the FlatGeoBuf layer even in the SPATIAL_INDEX=NO case, so retrieving the extent is fast. Even -- http://www.spatialys.com<http://www.spatialys.com/> My software is free, but my time generally not. Butcher of all kinds of standards, open or closed formats. At the end, this is just about bytes.
_______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/gdal-dev
