[Qgis-user] DEM values extraction

[Ramon Andiñach]

On 19/12/2012, at 21:19 , hersala wrote:

> 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.
> Thanks in advance.
> Hernán

Could you clip the DEM to the polygon and then vectorise the result?
Both should be in the raster menu.

-ramon.