Il 19/12/2012 14:19, hersala ha scritto:
> Dear users:
> Can someone give me a hint about how I can extract (using a polygon .shp) 
> height
> values from a DEM and assigning zero or any codified value to the nodes 
> located
> outside the polygon.

Just use the optional plugin Point sampling tools.
All the best.
-- 
Paolo Cavallini - Faunalia
www.faunalia.eu
Full contact details at www.faunalia.eu/pc
Nuovi corsi QGIS e PostGIS: http://www.faunalia.it/calendario
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