[postgis-devel] [PostGIS] #1615: [raster] ST_Raster produce wrong raster extent when requested raster is skewed

PostGIS trac at osgeo.org
Fri Feb 24 14:40:28 PST 2012


#1615: [raster] ST_Raster produce wrong raster extent when requested raster is
skewed
---------------------+------------------------------------------------------
 Reporter:  pracine  |       Owner:  pracine      
     Type:  defect   |      Status:  new          
 Priority:  high     |   Milestone:  PostGIS 2.0.0
Component:  raster   |     Version:  trunk        
 Keywords:           |  
---------------------+------------------------------------------------------
 I have a circle:

 {{{
 SELECT ST_AsBinary(geom)
 FROM (SELECT
 ST_Buffer(ST_SetSRID(ST_MakePoint(-1, 1), 0), 10)
 geom ) foo
 }}}

 The rasterized version do not have the right extent:

 {{{
 SELECT ST_Asbinary((gv).geom) geom, (gv).val
 FROM (SELECT ST_PixelAsPolygons(
 ST_AsRaster(
 ST_Buffer(ST_SetSRID(ST_MakePoint(-1, 1), 0), 10),
 1.0, -1.0, 0.2, 0.2, '8BSI', 5, -10, 0.2, 0.2, false)
 ) gv
 ) foo
 }}}

-- 
Ticket URL: <http://trac.osgeo.org/postgis/ticket/1615>
PostGIS <http://trac.osgeo.org/postgis/>
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