Hi, glad to see the module is used :-D If I correctly remember, you have to use a DEM with bathimetry and dam, then the dam break is passed trough a raster with decrements of dam height (it is use to calculate the new DEM after the dam breck by DEM - BREAK).
Best, Maxi 2017-08-30 10:44 GMT+02:00 Codrina Maria Ilie <[email protected]>: > 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_1shUSx3VThlY3B >>> rV1JyWjg?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 >>> >>> >>> >>> >>> >>> >>> _______________________________________________ >>> grass-user mailing list >>> [email protected] >>> https://lists.osgeo.org/mailman/listinfo/grass-user >>> >> _______________________________________________ > grass-user mailing list > [email protected] > https://lists.osgeo.org/mailman/listinfo/grass-user > -- *Massimiliano Cannata* Professore SUPSI in ingegneria Geomatica Responsabile settore Geomatica Istituto scienze della Terra Dipartimento ambiente costruzione e design Scuola universitaria professionale della Svizzera italiana Campus Trevano, CH - 6952 Canobbio Tel. +41 (0)58 666 62 14 Fax +41 (0)58 666 62 09 [email protected] *www.supsi.ch/ist <http://www.supsi.ch/ist>*
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