[postgis-devel] [PostGIS] #1173: TopologyException from intersection of valid geography

PostGIS trac at osgeo.org
Fri Dec 16 09:30:17 PST 2011


#1173: TopologyException from intersection of valid geography
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  Reporter:  jgilman  |       Owner:  strk         
      Type:  defect   |      Status:  reopened     
  Priority:  medium   |   Milestone:  PostGIS 2.0.0
 Component:  postgis  |     Version:  trunk        
Resolution:           |    Keywords:               
----------------------+-----------------------------------------------------
Changes (by jgilman):

  * status:  closed => reopened
  * resolution:  invalid =>


Comment:

 The geography described by those points is not invalid.  The documentation
 says that st_isvalid only works on geometry (not geography).
 http://postgis.refractions.net/docs/ST_IsValid.html  As such it won't
 correctly validate the geography that I was using to demonstrate this
 problem.  This is a polygon that wraps around the north pole which isn't
 possible as a geometry object in postgis but should be possible as
 geography.

-- 
Ticket URL: <http://trac.osgeo.org/postgis/ticket/1173#comment:8>
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