[postgis-tickets] [PostGIS] #2251: [raster ] Rescaling raster chooses wrong values

[PostGIS]

#2251: [raster ] Rescaling raster chooses wrong values
----------------------+-----------------------------------------------------
 Reporter:  dzwarg    |       Owner:  dustymugs    
     Type:  defect    |      Status:  assigned     
 Priority:  critical  |   Milestone:  PostGIS 2.1.0
Component:  raster    |     Version:  trunk        
 Keywords:            |  
----------------------+-----------------------------------------------------
Changes (by dustymugs):

  * keywords:  raster =>
  * status:  new => assigned
  * version:  2.0.x => trunk
  * component:  postgis => raster
  * milestone:  => PostGIS 2.1.0


Comment:

 The following should result in the same answer and exposes the error in
 this ticket.

 {{{
 -- edge case
 WITH foo AS (
         SELECT ST_AddBand(ST_MakeEmptyRaster(10, 10, 0, 0, 1, -1, 0, 0,
 0), 1, '8BUI', 1, 0) AS rast
 )
 SELECT
         ST_Metadata(ST_Rescale(rast, 2, 2)) AS rescale,
         ST_Metadata(ST_Resize(rast, 0.5, 0.5)) AS resize
 FROM foo;
 }}}

-- 
Ticket URL: <http://trac.osgeo.org/postgis/ticket/2251#comment:1>
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