Stefan Steiniger wrote:
Hei

just a note: JUMP/OpenJUMP has a couple of tools for assessing geometries (Tools/QA menu). There is also a plugin that contains some classes from the Java Conflation Suite ( http://sourceforge.net/project/showfiles.php?group_id=118054&package_id=243601 )

could be that some tools/code are useful for your tasks

I have used the tools in OpenJUMP to find out what's wrong with some broken geometries, and to fix them by hand. This usually works beautifully, but OpenJUMP doesn't deal with some oddly broken geometries. IIRC the problematic ones were polygons with holes that have wrong orientation.
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