Wrong conversion when using a vertical CRS and feet
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Key: GEOT-3588
URL: http://jira.codehaus.org/browse/GEOT-3588
Project: GeoTools
Issue Type: Bug
Components: core referencing
Affects Versions: 2.7.1
Environment: Windows 7, Java 1.6
Reporter: Nils Grøstad
Priority: Minor
In the following program, initially the correct result is printed, but when
adding a vertical CRS,
the result is wrong. Note that feet are used. An initial analysis indicates
that the problem is the
conversion betwen meter and feet being applied multiple times, but I have not
been able to find a way
to fix this. The problem occurs both with a vertical CRS in meter and in feet.
public class TestConversion {
public static void main(String[] args) throws Exception {
CoordinateReferenceSystem crs = CRS.decode("EPSG:32038"); //
NAD27 Texas North Central, feet
MathTransform local2geo3D = CRS.findMathTransform(crs,
DefaultGeographicCRS.WGS84_3D);
DirectPosition p = new GeneralDirectPosition(2220135.84,
716913.45, 0);
p = local2geo3D.transform(p, null);
double lon = p.getCoordinate()[0];
double lat = p.getCoordinate()[1];
System.out.println("Lat " + lat + " lon " + lon); // Correct
result: Lat 33.63 lon -96.77
// Adding a vertical CRS:
CoordinateReferenceSystem local3D = new
DefaultCompoundCRS(crs.getName().toString(),
crs, DefaultVerticalCRS.ELLIPSOIDAL_HEIGHT);
local2geo3D = CRS.findMathTransform(local3D,
DefaultGeographicCRS.WGS84_3D);
p = new GeneralDirectPosition(2220135.84, 716913.45, 0);
p = local2geo3D.transform(p, null);
lon = p.getCoordinate()[0];
lat = p.getCoordinate()[1];
System.out.println("Lat " + lat + " lon " + lon); // Wrong
result: Lat 31.71 lon -103.27
}
}
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