Hello Marco, Itzï (www.itzi.org) is built upon GRASS and employs a partial inertia simplification of the Saint-Venant equations. It is certainly not as hydraulically accurate as the finite-volume approach of ANUGA, but it gives quite good results as a flood model, and is likely to be much faster.
Regards, Laurent 2017-09-04 2:41 GMT-05:00 Marco Alicera <[email protected]>: > Reading the subject and agreeing with Thomas about the limitations of > r.watershed, I wonder if there is any effort to port any of the models based > on the shallow water wave equations to grass. I recently read about the > anuga project https://anuga.anu.edu.au/wiki and it would be nice to use it > with a more friendly GIS environment. > Regards > -- > Marco > > 2017-09-01 11:04 GMT+02:00 Moritz Lennert <[email protected]>: >> >> On 01/09/17 09:50, Ken Mankoff wrote: >>> >>> Dear Moritz, >>> >>> Yes, the three day estimate is from the first hour of this command: >>> >>> seq 14000 | parallel --bar r.watershed elevation=DEM.fixed >>> flow=runoff.{#} accumulation=acc.{#} >> >> >> Have you checked memory usage. Setting memory= to something higher than >> the default value of 300MB could possibly speed things up a bit. >> >>> >>> I have a 4-core laptop. >> >> >> Time to find more cores... ;-) >> >> >> Moritz >> >> >> >> _______________________________________________ >> 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 _______________________________________________ grass-user mailing list [email protected] https://lists.osgeo.org/mailman/listinfo/grass-user
