[postgis-devel] [PostGIS] #1519: [raster] ST_MapAlgebraExpr : provide more keyword substitution

[PostGIS]

#1519: [raster] ST_MapAlgebraExpr : provide more keyword substitution
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 Reporter:  strk         |       Owner:  pracine      
     Type:  enhancement  |      Status:  new          
 Priority:  medium       |   Milestone:  PostGIS 2.0.0
Component:  raster       |     Version:  trunk        
 Keywords:               |  
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Comment(by strk):

 Oh, the same applies to ST_MapAlgebraFct, the user function should be able
 to access all informations related to the pixel.

 Geographic location, I'm mostly interested in, but I guess if x/y are also
 given maybe we should also pass raster band metadata (pixelsizes, offsets,
 rotations).

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Ticket URL: <http://trac.osgeo.org/postgis/ticket/1519#comment:1>
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