[GRASS-user] Interpolation

[Hamish]

Stefanie wrote:
> Would you please help me concerning interpolation methods? 
> 
> I got point data of temperature and snow depth and I
> want to try different interpolation methods to find the
> most realistic or appropriate. 
> 
> What I found by now, are IDW (inverse distance
> weighted) interpolation and rst (regularised spline with
> tension) interpolation.

RST is a very nice place to start.
see  http://grass.osgeo.org/wiki/RST_Spline_Surfaces


> So do have an idea if I could also find some kriging tools
> for example? Could you give other hints? 

there is a Google Summer of Code project (just starting) to improve that,
  http://socghop.appspot.com/student_project/show/google/gsoc2009/osgeo/t124023165994
  http://grass.osgeo.org/wiki/GRASS_AddOns#v.autokrige


see also
  http://grass.osgeo.org/wiki/GRASS_AddOns#v.surf.krige
  http://grass.osgeo.org/wiki/How_to_interpolate_point_value_using_kriging_method_with_R_and_GRASS_6

You can find GRASS-R experts on the grass-stats mailing list.



Hamish