[Geotools-gt2-users] How to transform shapes with different datum?

[dodid <ber...@gm...>]

Hi,
 
I created a Maven project to transform shapefiles and used the example from
the geotools web site as basis.

When I load a shapefile and transform it to a shapefile with the same CRS
everything is fine. But as soon as try to transform the shapefile with a
different datum, the result is misplaced, or, if I turn of 'lenient',
Geotools tells me that the Bursa Wolf parameters are missing.

But how can I solve this problem?

Currently I use the following lines to transform:

   CoordinateReferenceSystem dataCRS =
schema.getCoordinateReferenceSystem();
   CoordinateReferenceSystem worldCRS = map.getCoordinateReferenceSystem();
   MathTransform transform = CRS.findMathTransform(dataCRS, worldCRS,
false);
   ...
   Geometry geometry2 = JTS.transform(geometry, transform);

Is there a working example?
Can Geotools identify the required Bursa Wolf parameters?

I'm using Geotools 9.1 and have the dependencies gt-shapefile,
gt-referencing, gt-swing and gt-epsg-hsql

Thanks
Andreas




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