[postgis-devel] [PostGIS] #788: Topology: ST_NewEdgesSplit don't work with more edges connected

PostGIS trac at osgeo.org
Wed Jan 19 03:12:48 PST 2011


#788: Topology: ST_NewEdgesSplit don't work with more edges connected
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  Reporter:  aperi2007  |       Owner:  strk         
      Type:  defect     |      Status:  closed       
  Priority:  medium     |   Milestone:  PostGIS 2.0.0
 Component:  topology   |     Version:  trunk        
Resolution:  invalid    |    Keywords:               
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Comment(by robe):

 Strk,

 doesn't ST_NewEdgesSplit always delete the original edge and create 2 new
 ones.  (We would use ST_ModEdgeSplit (for the other behavior).

 In which case shouldn't passing edge number 1 in again return a non-
 existent edge error.

 That was my understanding scanning the code you have and also
 corroborating with the SQL-MM doc I mentioned earlier.  Or do we just have
 a dangling record somewhere.

 Can you verify I documented this right?

 http://www.postgis.org/documentation/manual-svn/ST_NewEdgesSplit.html

-- 
Ticket URL: <http://trac.osgeo.org/postgis/ticket/788#comment:4>
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