[postgis-tickets] [PostGIS] #2805: [raster] Expected return from ST_MapAlgebra callback function is not documented

[PostGIS]

#2805: [raster] Expected return from ST_MapAlgebra callback function is not
documented
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 Reporter:  strk           |       Owner:  robe 
     Type:  defect         |      Status:  new  
 Priority:  medium         |   Milestone:       
Component:  documentation  |     Version:  trunk
 Keywords:                 |  
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Changes (by strk):

 * cc: dustymugs., robe (added)


Comment:

 I'm unexpectedly getting a NODATA value of 0 in output from ST_MapAlgebra
 when the input has no NODATA flag set. This is one of the reasons why I
 was looking for documentation about return values...

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Ticket URL: <http://trac.osgeo.org/postgis/ticket/2805#comment:1>
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