[postgis-tickets] [PostGIS] #2807: [raster] ST_MapAlgebra injecting a default NODATA value of 0

[PostGIS]

#2807: [raster] ST_MapAlgebra injecting a default NODATA value of 0
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 Reporter:  strk    |       Owner:  dustymugs    
     Type:  defect  |      Status:  new          
 Priority:  medium  |   Milestone:  PostGIS 2.2.0
Component:  raster  |     Version:  trunk        
 Keywords:          |  
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Comment(by strk):

 I think it would make sense to throw an exception if the expression
 returns NULL and the input has no NODATA. A user should add a NODATA to
 the input prior to send to ST_MapAlgebra if she wants to allow for nodata.

 I'm against adding more parameters (raster world is already over
 parametrized for my taste).

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Ticket URL: <http://trac.osgeo.org/postgis/ticket/2807#comment:4>
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