[postgis-devel] [PostGIS] #606: [raster] ST_Value should return NULL for nodata values

[PostGIS]

#606: [raster] ST_Value should return NULL for nodata values
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 Reporter:  pracine         |       Owner:  pracine      
     Type:  enhancement     |      Status:  new          
 Priority:  medium          |   Milestone:  PostGIS 2.0.0
Component:  postgis raster  |     Version:  trunk        
 Keywords:                  |  
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 There is two options for returning nodata values.

 1) Nodata values are REAL nodata values and there is NO value, period. In
 this case ST_Value should return NULL.

 2) We want to be able to do computation with nodata values. In this case
 ST_Value should return the nodata value.

 Up to now I have a strong preference for 2) and plan to change the
 behavior of ST_Value. Still thinking about the impacts though...

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Ticket URL: <http://trac.osgeo.org/postgis/ticket/606>
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