[GRASS-user] Some questions about DEMs

[Maciej Sieczka]

W dniu 10.07.2010 02:31, Hamish pisze:
> Maciek wrote:

>> For heterogenous input data I'd try the nn algorithm in
>> nnbathy, through r.surf.nnbathy (http://grass.osgeo.org/wiki/Addons#r.surf.nnbathy).

> It is great for sparse points, but for contour lines + hydrological
> modeling it is not the best. See nn valley staircase effect in
>   http://grass.osgeo.org/wiki/Contour_lines_to_DEM

Interpolating from contour lines has always been a nightmare for me :). 
What is the best approach in your opinion?

Maciek

-- 
Maciej Sieczka
http://www.sieczka.org