[GRASS-user] r.flow-> wrong result

Moritz Lennert mlennert at club.worldonline.be
Fri Dec 22 00:54:48 PST 2017


On 21/12/17 15:13, Eva Schindele wrote:
> Hello Grassdevelopers,
> 
> I try to run the r.flow module to get the flow path length of my Layer out.
> The input Layer is a DEM with pixelsize 0.0083 and the selected CRS 
> (EPSG:32646, WGS 84/ UTM zone 46).
> First of all I generated a depressionless elevation with saga:fill sinks.

AFAIK, you should fill sinks before using r.flow. Try without that step.

> 
> If I start the function, it runs and I get the three Outputlayer, but 
> they are wrong. -->  pictures see below

It might help to explain what you expect as output and why the one you 
get is wrong. Just from looking at your maps it's not easy to 
understand, especially since we do not get to see the original DEM.

Moritz


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