[geos-devel] Re: [GEOS] #488: TopologyException unioning valid geometries [JTS fails]

[GEOS]

#488: TopologyException unioning valid geometries [JTS fails]
------------------------+---------------------------------------------------
 Reporter:  sky         |        Owner:  geos-devel@…              
     Type:  defect      |       Status:  reopened                  
 Priority:  major       |    Milestone:  GEOS Future               
Component:  Default     |      Version:  svn-trunk                 
 Severity:  Unassigned  |   Resolution:                            
 Keywords:  jts fails   |  
------------------------+---------------------------------------------------

Comment(by strk):

 self-unioning an operand becoming invalid after snap fixes this case.
 Attaching an updated reduced version with expected result (obtained with
 this heuristic)

-- 
Ticket URL: <http://trac.osgeo.org/geos/ticket/488#comment:27>
GEOS <http://geos.refractions.net/>
GEOS (Geometry Engine - Open Source) is a C++ port of the Java Topology Suite (JTS).