also "another_dump2" seems to execute well with JTS. I'm using its wkt representation as a collected multipolygon: http://www.giovanniallegri.it/share/another_dump2_collect_wkt.txt
giovanni 2010/6/27 strk <s...@keybit.net>: > 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 > _______________________________________________ geos-devel mailing list geos-devel@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/geos-devel