[postgis-devel] [PostGIS] #1515: [raster] Optimization in ST_MapAlgebra fails

[PostGIS]

#1515: [raster] Optimization in ST_MapAlgebra fails
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 Reporter:  pracine         |       Owner:  pracine      
     Type:  defect          |      Status:  new          
 Priority:  medium          |   Milestone:  PostGIS 2.0.0
Component:  postgis raster  |     Version:  trunk        
 Keywords:                  |  
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 When doing:

 SELECT ST_MapAlgebraExpr(ST_AddBand(ST_MakeEmptyRaster(3, 3, 0, 0, 1, 1,
 0, 0, -1), '32BSI'::text, 1, -1), 1, '32BF'::text, 'rast'::text)

 to convert a 32BSI band to a 32BF band, RASTER_mapAlgebraExpr() fails to
 copy the band (this is an optimization when the map algebra expression
 resume to 'rast') with this notice:

 NOTICE:  rt_raster_copy_band: Second raster has no band.

 I am pretty sure this line in rt_pg.c:

 rt_raster_copy_band(raster, newrast, nband - 1, 0);

 should look like:

 rt_raster_copy_band(newrast, raster, nband - 1, 0);

 Unfortunately I can't commit now as I still don<t have a working windows
 build.

-- 
Ticket URL: <http://trac.osgeo.org/postgis/ticket/1515>
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