I've never tried adding a gsb file directly to the jar file, I usually create the folder src/main/resources/org/geotools/referencing/factory/gridshift in my project and store the file in there.
Ian On Tue, 7 Apr 2020 at 10:14, Benjamin Sokolowski < benjamin.sokolow...@data-experts.de> wrote: > 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* > <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* > <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* > <GeoTools-GT2-Users@lists.sourceforge.net> > *https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users* > <https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users> > > > -- > Ian Turton > > -- Ian Turton
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