Hi Ian, thanks for the reply. Found the discussion at stackexchange already, but it didn't help me. Maybe i didn't understand it correctly. >> where exactly did you put it? Do you mean in which jar-File? gt-referencing-16.0.jar I only have geotools in the build path, not the sources.
Benjamin Von: "Ian Turton" <ijtur...@gmail.com> An: "Benjamin Sokolowski" <benjamin.sokolow...@data-experts.de> Kopie: "geotools-users" <geotools-gt2-users@lists.sourceforge.net> Datum: 07.04.2020 11:06 Betreff: Re: [Geotools-gt2-users] Coordinate Transformation 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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