Hi Anna,
You were perfectly right!
I changed from null to 0 and it works.
Thank you!
Codrina
On 29/08/2017 00:05, Anna Petrášová wrote:
Hi,
On Mon, Aug 28, 2017 at 4:53 PM, Codrina Maria Ilie
<[email protected]> wrote:
Hi all,
I have been trying to run GRASS7 module r.damflood using the following
datasets:
[https://drive.google.com/drive/folders/0B2Yx_1shUSx3VThlY3BrV1JyWjg?usp=sharing],
with this command:
r.damflood --overwrite --verbose elev=dem lake=water_depth
dambreak=dam_breach manning=manning tstop=3 deltat=1 h=b_depth vel=b_vel
hmax=b_mwd vmax=b_mwv imax=b_mi wavefront=b_wf
To make it easier, the lake has a constant depth.
As far as I can understand, the rasters should be correctly built, but the
outputs of r.damflood are obviously wrong (rasters with nodata or one
category = 0; at second 1 the depth raster is half the lake's size (s00.png,
s01.png)and at second 2, it completely disappears).
During the processing, I get the Courant-Friedrich-Lewy stability condition
warning message.
If I try to chose as computational method for initial velocity estimation,
uniform drop in of lake or small dam breach, I get the following error
"ERROR: Don't find the dambreak - Please select a correct map or adjust the
computational region".
Does anyone have an idea what could be the reason of these results, please?
Any suggestion would be highly appreciated.
Your water_depth should have 0 instead of nulls, I think that's the
problem in your case. The stability condition warning probably means
you should reduce your time step, on the other hand, it will take more
time.
Anna
Cheers,
Codrina
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