[postgis-devel] [PostGIS] #1987: Results given by ST_Simplify inconsistent between PostGIS 1.5.2 and 2.0.1

PostGIS trac at osgeo.org
Wed Nov 14 00:41:45 PST 2012


#1987: Results given by ST_Simplify inconsistent between PostGIS 1.5.2 and 2.0.1
--------------------------+-------------------------------------------------
 Reporter:  ChrisInCambo  |       Owner:  pramsey      
     Type:  defect        |      Status:  new          
 Priority:  high          |   Milestone:  PostGIS 2.0.2
Component:  postgis       |     Version:  2.0.x        
 Keywords:                |  
--------------------------+-------------------------------------------------

Comment(by strk):

 I was looking at reverting the change and also at adding more testcases
 when I realized that for LINESTRING objects the same "become EMPTY"
 behavior doesn't apply (a line never collapses to a point, as the DP algo
 never drops single segments).

 Do we really want exact behavior of 1.5 here ? It's kind of inconsistent
 with self: polygons can disappear but lines can't...

-- 
Ticket URL: <http://trac.osgeo.org/postgis/ticket/1987#comment:19>
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