[GRASS-user] Stream flow direction map

[Hamish]

Achim wrote:

> Further I suggest to weight the DEM with the contour information.
> A guess how this could be done:
> v.to.rast contourmap
> r.fillnulls (to interpolate between contour lines raster map)?

r.fillnulls is better for little holes (e.g. in SRTM data)

see comparison of other methods here:
  http://grass.osgeo.org/wiki/Contour_lines_to_DEM


Hamish