[postgis-devel] [PostGIS] #397: Defect in within function

[PostGIS]

#397: Defect in within function
------------------------+---------------------------------------------------
 Reporter:  svenanders  |       Owner:  pramsey
     Type:  defect      |      Status:  new    
 Priority:  medium      |   Milestone:         
Component:  postgis     |     Version:  1.4    
 Keywords:              |  
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 I have two boundarys , first one is Schleswig Holstein a state of Germany
  the second one is the village "Hohe Elbe."
  There are both from OpenStreetMap.
  Hohe Elbe is in Schleswig Holstein but the Within function tells is
 always false.


 select
 sh.geom=GeomUnion(hoElbG.geom,sh.geom) as union,
 Within(hoElbG.geom,sh.geom),Within(sh.geom,hoElbG.geom),
 hoElbG.geom=intersection(hoElbG.geom,sh.geom)  as intersection,
 isvalid(hoElbG.geom),isvalid(sh.geom)
 from boundary_test hoElbG,  boundary_test sh where hoElbG.id=158057 and
 sh.id=51529;

 gives

  union | within | within | intersection | isvalid | isvalid
 -------+--------+--------+--------------+---------+---------
  t     | f      | f      | t            | t       | t



  POSTGIS="1.4.1" GEOS="3.2.0-CAPI-1.6.0" PROJ="Rel. 4.6.0, 21 Dec 2007"
 USE_STATS
  Postgresql 8.3
  Debian lenny.

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Ticket URL: <http://trac.osgeo.org/postgis/ticket/397>
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