[postgis-devel] [PostGIS] #629: Raster ST_Contains

[PostGIS]

#629: Raster ST_Contains
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 Reporter:  andrewsimpson   |       Owner:  jorgearevalo 
     Type:  defect          |      Status:  assigned     
 Priority:  medium          |   Milestone:  PostGIS 1.5.3
Component:  postgis raster  |     Version:  1.5.X        
 Keywords:                  |  
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Changes (by jorgearevalo):

  * owner:  pracine => jorgearevalo
  * status:  new => assigned


Comment:

 Hi Andrew,

 ST_Contains considers a polygon doesn't contain its boundaries, and that's
 what's happening here, I think.

 The BOX2D constructed to make the query is based on the pixel corners of
 each block (=row in raster table in tiled rasters) transformed in map
 coordinates using geotransform array. Making a buffer around this box
 could solve the problem, yes, but I think getting a tile per server round
 it's an improvable strategy.

 I have a new version of GDAL driver, with some improvements, but this part
 hasn't be improved yet. Suggestions are welcome before committing it.

 Many thanks for the report, Andrew.

-- 
Ticket URL: <http://trac.osgeo.org/postgis/ticket/629#comment:1>
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