[GRASS-user] Calculate the steepness

Jonathan Piraux jopiraux at ulb.ac.be
Thu Sep 9 20:42:34 EDT 2010


I would like to calculate the number of streets segments having a 
steepness above 5%.

Therefore I slpit my street vectors lines into segments of 100m and I 
created a a slope raster via a DEM (via r.slope.aspect).

Then, I was planing to use v.rast.stat but it only work with polygon.

I tried to convert my vectorial lines in polygons but it doesn't work.

Do have someone a sugestion?



Jonathan Piraux

410 Chaussée d'Alsemberg
1180 Brussels Belgiumhe

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