I'm not familiar with the third method, but tried the first two on 21.x:
Plain: GeneralDirectPosition[259878.57433310486, 377178.60575377225]
JTS: POINT (259878.57433310486 377178.60575377225)
and 22.x (has the new EPSG database):
Plain: GeneralDirectPosition[259878.57433310486, 377178.60575377225]
JTS: POINT (259878.57433310486 377178.60575377225)
Also tried out using epsg-wkt instead of epsg-hsql, but results did not
change for me.
I don't know what's going on with your installation, but gut feeling, I'd
check the classpath (are you using Maven)?
Cheers
Andrea
On Fri, Sep 20, 2019 at 10:25 AM Clemens Eisserer <linuxhi...@gmail.com>
wrote:
> Hi,
>
> After upgrading an application from geotools-14.3 to 21.2 I've
> observed strange behaviour when transforming points from one CRS
> (EPSG:31251) to another (EPSG:31287).
> The original code we had dies with an exception, however even two
> other tries return different results from what I got with 14.3.
> With an external tool I also get results which are identical to what
> 14.3 returns.
>
> With 14.3 all 3 tries succeed and return the expected result:
> > OldWay: POINT (259878.57433310486 377178.60575377225)
> > Plain: GeneralDirectPosition[259878.57433310486, 377178.60575377225]
> > JTS: POINT (259878.57433310486 377178.60575377225)
>
> With 21.2 the geometryBuilder-based way fails, the two others return
> consistent but different (wrong?) results:
> > Plain: GeneralDirectPosition[219916.12907210115, 405574.2553041743]
> > JTS: POINT (219916.12907210115 405574.2553041743)
> > java.lang.IllegalArgumentException: DirectPosition cannot have a null CRS
> > at
> org.geotools.geometry.jts.spatialschema.geometry.DirectPositionImpl.setCRS(DirectPositionImpl.java:155)
> > at
> org.geotools.geometry.jts.spatialschema.geometry.DirectPositionImpl.<init>(DirectPositionImpl.java:125)
> > at
> org.geotools.geometry.jts.spatialschema.geometry.primitive.PrimitiveFactoryImpl.createDirectPosition(PrimitiveFactoryImpl.java:95)
> > at
> org.geotools.geometry.jts.spatialschema.geometry.primitive.PrimitiveFactoryImpl.createPoint(PrimitiveFactoryImpl.java:103)
> > at
> org.geotools.geometry.GeometryBuilder.createPoint(GeometryBuilder.java:352)
> > at
> org.geotools.geometry.GeometryBuilder.createPoint(GeometryBuilder.java:320)
>
> Any idea whats going on here?
>
> Best regards, Clemens
>
>
> public class CoordinateTransformTest {
>
> @Test
> public void testTransform() throws FactoryException,
> TransformException {
> CoordinateReferenceSystem gkCRS = CRS.decode("EPSG:31251");
> CoordinateReferenceSystem dbCRS = CRS.decode("EPSG:31287");
>
> MathTransform transform = CRS.findMathTransform(gkCRS, dbCRS,
> true);
> DirectPosition2D pos2D = new DirectPosition2D(86765.44, 238436.25);
>
> DirectPosition posTransformed = transform.transform(pos2D, null);
> System.out.println("Plain: "+posTransformed);
>
> Point transformedPoint = (Point)
> JTS.transform(JTS.toGeometry(pos2D.getDirectPosition()), transform);
> System.out.println("JTS: "+transformedPoint);
> }
>
> @Test
> public void testOldWay() throws FactoryException, TransformException
> {
> CoordinateReferenceSystem gkCRS = CRS.decode("EPSG:31251");
> CoordinateReferenceSystem dbCRS = CRS.decode("EPSG:31287");
>
> GeometryBuilder geometryBuilder = new GeometryBuilder(gkCRS);
>
> org.opengis.geometry.primitive.Point point =
> geometryBuilder.createPoint(86765.44, 238436.25);
>
> MathTransform mtf = CRS.findMathTransform(gkCRS, dbCRS, true);
>
> Point transformedPoint = (Point)
> JTS.transform(JTS.toGeometry(point.getDirectPosition()), mtf);
> System.out.println("OldWay: "+transformedPoint);
> }
> }
>
>
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>
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