Hi Paul, thank you very much, that was the right hint. I'm now using the ApproximateGeometryWithLineStrings Method from the SpatialUtilityClass, which I didn't knew before. Best regards Bohne -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/CurvePolygon-tp6609629p6609718.html Sent from the FDO Users mailing list archive at Nabble.com.