[postgis-devel] [PostGIS] #2024: raster: ST_Union is buggy

PostGIS trac at osgeo.org
Thu Oct 4 07:56:15 PDT 2012

#2024: raster: ST_Union is buggy
  Reporter:  robe     |       Owner:  dustymugs    
      Type:  defect   |      Status:  closed       
  Priority:  blocker  |   Milestone:  PostGIS 2.1.0
 Component:  raster   |     Version:  trunk        
Resolution:  fixed    |    Keywords:               

Comment(by pracine):

 I think you should test with images bigger than the one you used in your
 blog (i.e. a SRTM tile?). Note also that the size of the tiles affect the
 performance. The same image tiled smaller should take longer to be
 unioned. And the most important is: Is the time required still progress as
 the square of the number of pixel involved? If yes then you should soon
 reach astronomic times as the size of your image grow.

Ticket URL: <http://trac.osgeo.org/postgis/ticket/2024#comment:21>
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