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

PostGIS trac at osgeo.org
Fri Oct 5 12:23:33 PDT 2012

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

Comment(by dustymugs):

 I should elaborate on the custom functions.  My statement "The custom
 functions will need to be rewritten though.".  What I mean is that the
 signature can stay the same.  PostgreSQL treats matrix[][] the same as
 matrix[] or matrix[][][][].  Bracket sets beyond the first set are more
 for user understanding but have no real meaning beyond that.  A matrix
 defined as matrix[] can have one or more dimensions.

 What will change with the custom functions are checks to require three
 dimensions and how to handle those three dimensions.

Ticket URL: <http://trac.osgeo.org/postgis/ticket/2030#comment:12>
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