[postgis-devel] [PostGIS] #593: [raster] Add a ST_BandIsNoData function

[PostGIS]

#593: [raster] Add a ST_BandIsNoData function
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 Reporter:  pracine         |       Owner:  jorgearevalo 
     Type:  task            |      Status:  assigned     
 Priority:  medium          |   Milestone:  PostGIS 2.0.0
Component:  postgis raster  |     Version:  trunk        
 Keywords:                  |  
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Comment(by pracine):

 > - What should we do in case of offline bands? We could check the values
 using GDAL.[[BR]]

 This job should be done by raster2pgsql.py

 > - Correct me if I'm wrong, but we don't need the isnodata flag to be
 stored in WKB string

 Yes. It must be persistent. The code should look exactly like the code for
 hasnodata.

 Most of the work has to be done in raster2pgsql.py (and every set pixel
 functions).

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Ticket URL: <http://trac.osgeo.org/postgis/ticket/593#comment:6>
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