Hello all,
I'm new to GeoTools, which I want to use for coordinate
transformation/conversion. So I tried to write a first "HelloWorld"-kinded
Java-Programm as listed below.
To do this, I obviously need - at runtime - the following jars:
geoapi
gt-api
gt-epsg-hsql
gt-epsg-wkt
gt-metadata
gt-referencing
hsqldb
jsr
jts
vecmath
That is in GT 2.4 I use:
geoapi-nogenerics-2.1.0.jar
gt2-api-2.4.4.jar
gt2-epsg-hsql-2.4.4.jar
gt2-epsg-wkt-2.4.4.jar
gt2-metadata-2.4.4.jar
gt2-referencing-2.4.4.jar
hsqldb-1.8.0.7.jar
jts-1.8.jar
vecmath" value="vecmath-1.3.1.jar
jsr108-0.01.jar
Working with GT 2.4 I get the expected results:
(5.5, 51.5, NaN)--(2465319.9084173385, 5707389.990091773, NaN)
Geom-x=2465319.9084173385 Geom-y=5707389.990091773 Geom-z=NaN
But if I use the corresponding jars delivered with GT 2.5 I get obviusly wrong
results:
(5.5, 51.5, NaN)--(8160251.446339277, 866025.4670919782, NaN)
Geom-x=8160251.446339277 Geom-y=866025.4670919782 Geom-z=NaN
In that case I'm using:
geoapi-2.2-M1.jar
gt-api-2.5-RC0.jar
gt-epsg-hsql-2.5-RC0.jar
gt-epsg-wkt-2.5-RC0.jar
gt-metadata-2.5-RC0.jar
gt-referencing-2.5-RC0.jar
hsqldb-1.8.0.7.jar
jts-1.9.jar
vecmath-1.3.1.jar
jsr-275-1.0-beta-2.jar
Could anybody tell me what I'm doing wrong?
Greetings
Erich
// code:
import org.geotools.geometry.jts.JTS;
import org.geotools.referencing.CRS;
import org.opengis.referencing.FactoryException;
import org.opengis.referencing.NoSuchAuthorityCodeException;
import org.opengis.referencing.crs.CoordinateReferenceSystem;
import org.opengis.referencing.operation.MathTransform;
import org.opengis.referencing.operation.TransformException;
import com.vividsolutions.jts.geom.Coordinate;
import com.vividsolutions.jts.geom.Geometry;
import com.vividsolutions.jts.geom.GeometryFactory;
import com.vividsolutions.jts.geom.Point;
public class myTest {
public static void main(String [] args) {
// TODO Auto-generated method stub
CoordinateReferenceSystem srIn = null;
CoordinateReferenceSystem srOut = null;
try {
srIn = CRS.decode( "EPSG:4326" ); // WGS84
System.out.println(srIn.getName());
srOut = CRS.decode( "EPSG:31462" ); // GK2
System.out.println(srOut.getName());
System.out.println(srOut.toWKT());
MathTransform trans = CRS.findMathTransform(srIn,
srOut, true);
Coordinate oCoor = new Coordinate( 5.5, 51.5);
Coordinate nCoor = null;
GeometryFactory gf = new GeometryFactory();
Point oP = gf.createPoint( oCoor );
try {
// 1st try
nCoor = JTS.transform(oCoor, nCoor, trans);
if (nCoor != null) {
System.out.println(oCoor.toString() +
"--" + nCoor.toString());
}
else
System.out.println("Failure!");
// 2nd try
Geometry geom = JTS.transform(oP, trans);
System.out.println("Geom-x=" +
geom.getCoordinate().x + " Geom-y=" + geom.getCoordinate().y + " Geom-z=" +
geom.getCoordinate().z);
} catch (TransformException e) {
e.printStackTrace();
}
} catch (NoSuchAuthorityCodeException e) {
e.printStackTrace();
} catch (FactoryException e) {
e.printStackTrace();
}
}
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