[postgis-devel] [PostGIS] #791: Topology: function GetEdgeByPoint($1, $2, $3)

PostGIS trac at osgeo.org
Mon Feb 14 01:43:26 PST 2011


#791: Topology: function GetEdgeByPoint($1,$2,$3)
-------------------------+--------------------------------------------------
 Reporter:  aperi2007    |       Owner:  strk         
     Type:  enhancement  |      Status:  new          
 Priority:  medium       |   Milestone:  PostGIS 2.0.0
Component:  topology     |     Version:  trunk        
 Keywords:               |  
-------------------------+--------------------------------------------------

Comment(by robe):

 I think for the reason that Nicklas had stated that ST_Intersects in
 theory should be faster, but I haven't done any official tests myself to
 be sure.  We tend to use ST_DWithin for most everything just because for
 most cases we need a little bit of tolerance (or are working with less
 than perfect geometries)  which we don't get with ST_Intersects.

 I would have said before 1.5 that ST_Intersects was most definitely
 faster, but now that ST_DWithin speed has improved for larger geometries,
 I'm not so sure.

-- 
Ticket URL: <http://trac.osgeo.org/postgis/ticket/791#comment:7>
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