[postgis-devel] [PostGIS] #1586: [raster] st_dumpaspolygons makes not valid polygons

[PostGIS]

#1586: [raster] st_dumpaspolygons makes not valid polygons
----------------------+-----------------------------------------------------
 Reporter:  jomarlla  |       Owner:  dustymugs    
     Type:  defect    |      Status:  assigned     
 Priority:  high      |   Milestone:  PostGIS 2.0.0
Component:  raster    |     Version:  trunk        
 Keywords:            |  
----------------------+-----------------------------------------------------

Comment(by dustymugs):

 Success!  Found one...

 {{{
 WITH foo AS (
         SELECT (ST_DumpAsPolygons(
                 ST_SetValue(
                         ST_SetValue(
                                 ST_AddBand(
                                         ST_MakeEmptyRaster(4, 4, 0, 0, 1,
 1, 0, 0, 0)
                                         , '8BUI'::text, 1, 0
                                 )
                                 , 2, 2, 0
                         )
                         , 3, 3, 0
                 )
         )).geom AS geom
 )
 SELECT
         ST_IsValid(geom),
         ST_AsText(geom)
 FROM foo
 }}}

-- 
Ticket URL: <http://trac.osgeo.org/postgis/ticket/1586#comment:10>
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