[postgis-devel] [PostGIS] #1545: ST_SimplifyPreserveTopology creates invalid geometries

PostGIS trac at osgeo.org
Mon Feb 6 05:52:56 PST 2012

#1545: ST_SimplifyPreserveTopology creates invalid geometries
 Reporter:  strk     |       Owner:  pramsey      
     Type:  defect   |      Status:  new          
 Priority:  medium   |   Milestone:  PostGIS 2.0.0
Component:  postgis  |     Version:  trunk        
 Keywords:           |  
 When simplifying a closed linestring by a tolerance higher than the max
 extent dimension such closed linestring becomes formed by 2 equal points,
 which makes it invalid.

 I belive the whole point of preserving topology should be preventing such

Ticket URL: <http://trac.osgeo.org/postgis/ticket/1545>
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