[postgis-devel] [PostGIS] #1639: [raster] MapAlgebraExpr can't handle conditions

[PostGIS]

#1639: [raster] MapAlgebraExpr can't handle conditions
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 Reporter:  nicklas  |       Owner:  pracine      
     Type:  defect   |      Status:  new          
 Priority:  high     |   Milestone:  PostGIS 2.0.0
Component:  raster   |     Version:  trunk        
 Keywords:           |  
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Comment(by dustymugs):

 The expression "(([rast1]-[rast2]) > 5)::int" must be cast from boolean to
 integer first because a cast from boolean to double precision is not
 permitted.  An error was thrown by PostgreSQL 9.1 when I attempted that.

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Ticket URL: <http://trac.osgeo.org/postgis/ticket/1639#comment:17>
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