Have a look at https://gis.stackexchange.com/questions/313512/specifying-epsg-transformation-method-in-geotools/313523#313523 for an example.
When you say you added the .gsb to 'org.geotools.referencing.factory.gridshift' where exactly did you put it? Ian On Tue, 7 Apr 2020 at 09:33, Benjamin Sokolowski < benjamin.sokolow...@data-experts.de> wrote: > Hello, > > first time posting. Hope you guys can help. > I want to transform coordinates (point geometry) from Gauß Krueger Zone 3 > to ETRS:89 UTM32 using geotools and a grid file, which i already have. How > exactly do i do this? > > I already got the codelines: > CoordinateReferenceSystem sourceCRS = CRS.*decode*( "EPSG:31467" ); > CoordinateReferenceSystem targetCRS = CRS.*decode*( "EPSG:4647" ); > MathTransform transformation = CRS.*findMathTransform*( sourceCRS, > targetCRS ); > Geometry result = JTS.*transform*( geometry, transformation ); > > and put the .gsb to 'org.geotools.referencing.factory.gridshift', but that > doesn't seem to work. Geotools is still using the default Transformation, > not the more precise with the grid file. > > Best regards > Benjamin Sokolowski_______________________________________________ > GeoTools-GT2-Users mailing list > GeoTools-GT2-Users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users > -- Ian Turton
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