[GRASS-user] Creating a ground water from a vector files of contours?

Dylan Beaudette dylan.beaudette at gmail.com
Mon Feb 5 16:38:37 EST 2007

Hi Bob,

What have you defined your region as: i.e. what is the cell size, and what 
sort of area are you dealing with? If the cell size is too small, or your 
have defined a very large area, then v.surf.rst will take a very long time -- 
possibly producing a finer grid than really needed.

That aside, contour data can sometimes be a troublesome source for an 
interpolation. Also, for VERY large datasets (small resolution / large area) 
you might try some other interpolator. check the archives for some ideas.



On Monday 05 February 2007 12:50, Moskovitz, Bob wrote:
> Hello Grassusers,
> Like the subject line says, I need help creating a ground water map using a
> vector file of contours.  The ground water file came from a E00 file that
> was read into Grass using v.in.e00.  I am currently running v.surf.rst
> which is taking a long time to run.  Are there other ways to do this
> problem?
> Thanks in advance,
> Bob
> Bob Moskovitz
> Seismic Hazards Zonation Program
> California Geological Survey
> http://gmw.consrv.ca.gov/shmp
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Dylan Beaudette
Soils and Biogeochemistry Graduate Group
University of California at Davis

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