35 points version (2 geoms): http://strk.keybit.net/tmp/another_dump2.sql
... still finds non-noded intersections ... --strk; On Sun, Jun 27, 2010 at 12:18:22AM +0200, G. Allegri wrote: > I'm getting mad. The same geometries, run in a basic test written by > me works fine: http://www.giovanniallegri.it/share/test_wkt.java > The same geometries give errors in Postgis (+GEOS?) and with TestRunner... > > giovanni > > 2010/6/26 strk <s...@keybit.net>: > > On Sat, Jun 26, 2010 at 12:26:11AM +0200, G. Allegri wrote: > >> Before going to bed... a snapshot of the location causing the > >> exception: http://www.giovanniallegri.it/share/error_condition_snapshot.png > > > > Just in case mine is smaller, another reduction here: > > http://strk.keybit.net/tmp/another_dump1.sql > > (201 points in 3 geoms) > > > > NOTE: my version is a database dump, failure happens on st_union > > which fails with original geoms and fails with snapped overlay. > > dropping any of the 3 geoms makes the operation succeed, haven't > > checked if that's a special handling within postgis. > > > > It'd be worth filing a ticket on trac for better handling. > > > > --strk; > > > >> > >> > >> > >> 2010/6/25 G. Allegri <gioha...@gmail.com>: > >> > 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 > > > > -- > > > > () 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 -- () 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
