[postgis-devel] [PostGIS] #2030: [raster] n-raster ST_MapAlgebra

[PostGIS]

#2030: [raster] n-raster ST_MapAlgebra
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 Reporter:  dustymugs    |       Owner:  dustymugs    
     Type:  enhancement  |      Status:  assigned     
 Priority:  medium       |   Milestone:  PostGIS 2.1.0
Component:  raster       |     Version:  trunk        
 Keywords:               |  
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Comment(by dustymugs):

 A change to the callback signature.  Completely forgot about the magical
 NULL in SQL...

 {{{
 double precision allbackfunc(value double precision[][][], pos int[][],
 variadic userargs text[])
 }}}

 The nodata matrix is not needed due to the NULL.  In C, a separate matrix
 is needed.

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Ticket URL: <http://trac.osgeo.org/postgis/ticket/2030#comment:11>
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