[GRASS-user] mask problem

Nikos Alexandris nikos.alexandris at felis.uni-freiburg.de
Mon Jun 1 05:50:14 EDT 2009

> I’m working with a mask to cut the extent of my raster data (dem). I
> also have point vector data which lies also outside my mask. 

> Now I want to do the v.what.rast module to get elevation data into my
> vector data table. What can I do to also get the elevation data of the
> raster outside the mask??

1. Be sure you have matched the "active" region to the queried raster.
E.g.: "g.region rast=dem", perhaps with "-a" flag

2. Remove the MASK! Alternatively, if the MASK is big and takes a long
time to rebuild, just rename it temporarily for example with "g.rename

Then the points lying outside of the MASK should be updated as well.
Kind regards, Nikos

More information about the grass-user mailing list