[GRASS-user] r.stream.extract Syntax Problem

[Rich Shepard]

On Fri, 6 Apr 2012, Margherita Di Leo wrote:

> AFAIK (but surely Markus Metz will give an insight) r.stream.extract must
> run with flow accumulation produced by r.watershed. In order to use a
> weighted flow accumulation, I would produce it using the r.watershed
> command with the option "flow", instead of mapcalc.

madi,

   As I wrote, I've been following the example on the manual page, so

# calculate flow accumulation
r.watershed ele=elevation.10m at PERMANENT acc=elevation.10m.acc -f

I've run r.watershed elev=dem10m.avg accum=dem10m.acc -f

Rich