[GRASS-user] Re: [GRASS-web] raster module for travel time calculations

[Martin Landa]

Hi,

[Cc: grass-user ML]

2007/11/18, Kristian Förster <kristian.foerster at googlemail.com>:
> Dear GRASS developers,
>
> I am using GRASS GIS for some hydrological applications. For some
> questions like flood prediction it is useful to estimate the travel time
> of surface water in a basin to the outlet. Therefor I've developed a
> raster program "r.traveltime" which calculates the travel time for each
> cell in a basin from outputs of r.watershed and r.fill.dir. There is
> much literature about this procedure available but there's a lag of
> available software (GRASS and even ArcGIS do not come with such
> functions). The personal need an the lag of available programs were the
> reason for me to develop a new program for GRASS GIS. I am not a
> programming expert, so the program is very simple and far away from
> being perfect. Maybe if you are interested in these kind of extensions
> you may list it on your add-on page. Further it could be useful for
> other users of hydrological applications.
>
> r.traveltime is available here:
> http://home.arcor.de/jesbergwetter/software.html

great!, please add this module to wiki Add-ons page [1].

> Best regards
>
> Kristian Förster

Martin

[1] http://grass.gdf-hannover.de/wiki/GRASS_AddOns

>
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-- 
Martin Landa <landa.martin at gmail.com> * http://gama.fsv.cvut.cz/~landa *