All currently ported GEOS code has been upgraded to match JTS 1.3. New classes (introduced in JTS 1.3) are being ported now. Note: Because of this the current version from CVS does not compile. Next to do: 1. Change all exceptions to classes. Things left to port: 1. ConvexHull class from 'algorithm' 2. 'operation/distance' package 3. 'operation/buffer' package Yury