[postgis-users] GeomUnion problem
mbdavis at refractions.net
Thu May 3 17:20:49 PDT 2007
Another idea - are you using the latest version of PostGIS/GEOS? The
recent release added some GEOS enhancements which were designed to
address this issue.
Brent Wood wrote:
> I'm not sure what the problem is here, hopefully someone can help.
> I have some polygons cropped to cell boundaries. (select intersection...)
> I want to generate the geomunion of these for each cell, which seems
> straightforward, but GEOS is throwing an error...
> select astext(geomunion(track_cell_geom)) from effort_cells3 where cell_id =
> NOTICE: TopologyException: no outgoing dirEdge found
> ERROR: GEOS union() threw an error!
> Can anyone say what this means & what I need to do to work around it?
> Brent Wood
> postgis-users mailing list
> postgis-users at postgis.refractions.net
Senior Technical Architect
Refractions Research, Inc.
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