[postgis-devel] [PostGIS] #837: [raster] ST_MapAlgebra -- I think we have a memory leak

PostGIS trac at osgeo.org
Wed Apr 6 13:32:46 PDT 2011

#837: [raster] ST_MapAlgebra -- I think we have a memory leak
 Reporter:  robe            |       Owner:  jorgearevalo 
     Type:  defect          |      Status:  assigned     
 Priority:  blocker         |   Milestone:  PostGIS 2.0.0
Component:  postgis raster  |     Version:  trunk        
 Keywords:                  |  

Comment(by jorgearevalo):

 Replying to [comment:15 robe]:
 > Jorge,
 > Sorry to take so long to reply. On my windows mingw install it gives
 same message as yours and answers are in right ball park.
 > Takes 13 seconds to do the map call.
 > {{{
 > SELECT distinct (r).val
 > FROM (SELECT ST_DumpAsPolygons(map_rast) as r
 > FROM ch13.pele) As foo
 > }}}
 > Takes 359 ms.
 > So ST_DumpAsPolygons seems much faster and my elephant is recognizable
 in open jump. I haven't done any other tests though.

 Great news :-).

Ticket URL: <http://trac.osgeo.org/postgis/ticket/837#comment:16>
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