Extra transformations chained unexpectedly
------------------------------------------
Key: GEOT-1419
URL: http://jira.codehaus.org/browse/GEOT-1419
Project: GeoTools
Issue Type: Bug
Components: core referencing
Affects Versions: 2.4-M4, 2.3.2
Reporter: Andrea Aime
Assignee: Martin Desruisseaux
Fix For: 2.5-M0
The following program demonstrates an unexpected behaviour:
{code}
import org.geotools.referencing.CRS;
import org.opengis.referencing.crs.CoordinateReferenceSystem;
public class TestConversion {
public static void main(String[] args) throws Exception {
CoordinateReferenceSystem crs1 = CRS.decode("EPSG:26713");
CoordinateReferenceSystem crs2 = CRS.parseWKT(crs1.toWKT());
System.out.println("Equal: " + CRS.equalsIgnoreMetadata(crs1,
crs2));
System.out.println("Transform: " + CRS.findMathTransform(crs1,
crs2));
}
}
{code}
It's output being:
{code}
Equal: false
Transform: CONCAT_MT[INVERSE_MT[PARAM_MT["Transverse_Mercator",
PARAMETER["semi_major", 6378206.4],
PARAMETER["semi_minor", 6356583.8],
PARAMETER["central_meridian", -105.0],
PARAMETER["latitude_of_origin", 0.0],
PARAMETER["scale_factor", 0.9996],
PARAMETER["false_easting", 500000.0],
PARAMETER["false_northing", 0.0]]],
PARAM_MT["Molodenski",
PARAMETER["dim", 2],
PARAMETER["dx", 0.0],
PARAMETER["dy", 0.0],
PARAMETER["dz", 0.0],
PARAMETER["src_semi_major", 6378206.4],
PARAMETER["src_semi_minor", 6356583.8],
PARAMETER["tgt_semi_major", 6378206.4],
PARAMETER["tgt_semi_minor", 6356583.8]],
PARAM_MT["Molodenski",
PARAMETER["dim", 2],
PARAMETER["dx", 0.0],
PARAMETER["dy", 0.0],
PARAMETER["dz", 0.0],
PARAMETER["src_semi_major", 6378206.4],
PARAMETER["src_semi_minor", 6356583.8],
PARAMETER["tgt_semi_major", 6378206.4],
PARAMETER["tgt_semi_minor", 6356583.8]],
PARAM_MT["Molodenski",
PARAMETER["dim", 2],
PARAMETER["dx", 0.0],
PARAMETER["dy", 0.0],
PARAMETER["dz", 0.0],
PARAMETER["src_semi_major", 6378206.4],
PARAMETER["src_semi_minor", 6356583.8],
PARAMETER["tgt_semi_major", 6378206.4],
PARAMETER["tgt_semi_minor", 6356583.8]],
PARAM_MT["Transverse_Mercator",
PARAMETER["semi_major", 6378206.4],
PARAMETER["semi_minor", 6356583.8],
PARAMETER["central_meridian", -105.0],
PARAMETER["latitude_of_origin", 0.0],
PARAMETER["scale_factor", 0.9996],
PARAMETER["false_easting", 500000.0],
PARAMETER["false_northing", 0.0]]]
{code}
The resulting transform chain has more element than expected.
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