This is the reduced version of the test xml: http://www.giovanniallegri.it/share/TestUnionMultiPolygon_red.xml
Now it contains only two geometries. It tries to node them but fails, so a second try is done with the SnapOverlay, but it fails too. I don't know the algorithm so I'm not able, yet, to say what is failing. giovanni 2010/6/25 G. Allegri <gioha...@gmail.com>: > Here is a test xml: > http://www.giovanniallegri.it/share/TestUnionMultiPolygon.xml > It's big, but I will reduce it nex time :) > > Notes: > > 1 - this multipolygon comes from an st_collect on 95 rows in a postgis > table. The test on it fails with Topology Expection found non-noded > intersection, because the MP is invalid. I've tested it on jts from > trunk. > 2 - I've run a cascadedunion.union operation on a List of the same > geometries (picked with Geotools directly from the DB). It works fine. > In this test I've used jts 1.10 shipped with Geotools. I will try it > agains the trunk version as soon as possible. > > Giovanni > > 2010/6/25 strk <s...@keybit.net>: >> On Fri, Jun 25, 2010 at 04:39:17PM +0200, strk wrote: >>> Martin, is there any support for testing CascadedUnion >>> with the XML format ? Would help comparing GEOS/JTS. >> >> I've found TestUnaryUnion.xml in JTS repository. >> I guess that's what GEOS should be using >> for testing CascadedPolygonUnion. >> >> Only need to actually port UnaryUnion ... >> >> --strk; >> >> () Free GIS & Flash consultant/developer >> /\ http://strk.keybit.net/services.html >> _______________________________________________ >> geos-devel mailing list >> geos-devel@lists.osgeo.org >> http://lists.osgeo.org/mailman/listinfo/geos-devel >> > _______________________________________________ geos-devel mailing list geos-devel@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/geos-devel