[postgis-devel] [PostGIS] #597: [raster] Add a ST_Clip function

[PostGIS]

#597: [raster] Add a ST_Clip function
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 Reporter:  pracine         |       Owner:  pracine      
     Type:  task            |      Status:  new          
 Priority:  medium          |   Milestone:  PostGIS 2.0.0
Component:  postgis raster  |     Version:  trunk        
 Keywords:                  |  
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 As a wrapper around ST_MapAlgebra optimized by ST_SetValues(raster, band,
 x ,y, width, height, raster2, band2).

 We can then optimize ST_Intersection by cliping the intersecting area
 before polygonizing.

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Ticket URL: <http://trac.osgeo.org/postgis/ticket/597>
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