[GRASS-user] r.damflood example

Anna Petrášová kratochanna at gmail.com
Wed Dec 2 06:46:47 PST 2015

On Wed, Dec 2, 2015 at 7:20 AM, Panagiotis Mavrogiorgos <pmav99 at gmail.com>

> Hi all,
> I am trying to run r.damflood but I am running into trouble. Unfortunately
> the documentation has no examples. I manage to make the script run but I
> can't quite figure out what I need to use as input in order to get
> meaningful results.
> I've tried to describe the steps I followed in this gist:
> https://gist.github.com/pmav99/d6162e1d82e9f23f769c

Nice! Some steps seems too complicated, I suggest using r.null for some of
the steps. I think the problem is the break raster. It should have 0
everywhere except for the part of dam which breaks, that part should have
the height of the dam break, for example tens of meters. r.damflood
computes internally the new DEM as DEM with the dam minus the break raster.
I hope it's clearer now.


> Does anyone have any idea what I am doing wrong?
> Has anyone succesfully used this addon in the past? If you do, can you
> share an example?
> with kind regards,
> Panos
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