[postgis-devel] [PostGIS] #884: Unstable results with ST_Within, ST_Intersects

PostGIS trac at osgeo.org
Fri Mar 25 15:03:36 PDT 2011


#884: Unstable results with ST_Within, ST_Intersects
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 Reporter:  strk     |       Owner:  pramsey      
     Type:  defect   |      Status:  new          
 Priority:  high     |   Milestone:  PostGIS 1.5.3
Component:  postgis  |     Version:  1.5.X        
 Keywords:           |  
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Comment(by nicklas):

 Hallo

 I don't see the attached dataset.

 It seems to be very close in the code to #852, but I cannot see how that
 would give this behavior.

 But what I found in #852 is that the tolerance doesn't work on vertical
 and horizontal boundary lines and that the tolerance is not a tolerance of
 1e-12 map units as expected but depends on the length of the boundary
 segment that it is checked against.

 Regards
 Nicklas

-- 
Ticket URL: <http://trac.osgeo.org/postgis/ticket/884#comment:12>
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