[geos-devel] [GEOS] #626: Intersection with result from intersection --> TopologyException Error

GEOS geos-trac at osgeo.org
Fri Mar 15 14:52:59 PDT 2013

#626: Intersection with result from intersection --> TopologyException Error
 Reporter:  rajanski     |       Owner:  geos-devel@…                                     
     Type:  defect       |      Status:  new                                              
 Priority:  major        |   Milestone:                                                   
Component:  Default      |     Version:  3.3.3                                            
 Severity:  Significant  |    Keywords:  intersection, st_intersection, topology exception
 I have three geometries (Attached).

 I am intersecting the first two,and then intersect the result with the
 third geometry.

 Follows the error message

 Error performing intersection: TopologyException: found non-noded
 intersection between LINESTRING (15.1068 51.0102, 15.0974 51.0034) and
 LINESTRING (15.1068 51.0102, 15.0976 51.0036) at 15.101547860470001

 but only when Iam directly taking the geometries from a table (see

 When I produce the geometries with st_geomfromtext, it works.

 When I take the geometries from the table, transform themto text,and then
 back to geometry,it also works.

Ticket URL: <http://trac.osgeo.org/geos/ticket/626>
GEOS <http://geos.refractions.net/>
GEOS (Geometry Engine - Open Source) is a C++ port of the Java Topology Suite (JTS).

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