On Fri, Feb 5, 2021 at 3:40 PM Karsten Tebling <tebl...@masuch.de> wrote: > > Hello, > > i'm struggling with how to use the -ct option in ogr2ogr and could need > some help. > > i copied a NTv2.gsb to osgeo4w64/share/proj and edited the proj.db by > inserting a new row in the grid_transformation-table. using this > transformation in qgis works. however when i try to use it in ogr2ogr > with the same data i always get "failed to reproject feature (geometry > probably out of source or destination srs). no known way to write > feature with geometry 'none'". here is my code: > > ogr2ogr -s_srs "EPSG:31468" -t_srs "EPSG:25833" -dim XYZ -ct > "+proj=pipeline +step +inv +proj=tmerc +lat_0=0 +lon_0=12 +k=1 > +x_0=4500000 +y_0=0 +ellps=bessel +step +proj=hgridshift > +grids=NTv2LSBB_LSA.gsb +step +proj=utm +zone=33 +ellps=GRS80" -f DXF > punkte_25833.dxf punkte_31468.dxf >
Is the grid NTv2LSBB_LSA.gsb used for hgridshift really covering the full extent of punkte_31468.dxf ? You can check with "gdalinfo NTv2LSBB_LSA.gsb" and "ogrinfo -so punkte_31468.dxf". Markus M > i'm using the latest qgis-ltr and osgeo4w shell > > greetings > _______________________________________________ > gdal-dev mailing list > gdal-dev@lists.osgeo.org > https://lists.osgeo.org/mailman/listinfo/gdal-dev
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