[GRASS-user] Tobler's hiking function

[Hamish]

> I am trying to express Tobler's Hiking Function with r.mapcalc.

see also "r.walk":
 "Outputs a raster map layer showing the anisotropic cumulative cost of
moving between different geographic locations on an input elevation
raster map layer whose cell category values represent elevation combined
with an input raster map layer whose cell values represent friction
cost."



Hamish