[GRASS-user] [GRASSLIST:1170] Re: Flow accumulation revisited (MFD + cost surface)

[Huidae Cho]

There are no modules for that in GRASS.  r.terraflow uses a MFD
algorithm, but doesn't have any option for weighted flow accumulation.
I've requested the feature:
http://intevation.de/rt/webrt?serial_num=4863

If I remember correctly, ArcObject has a function called FlowDirection
or something (I forgot its name).  Maybe, it's implemented in the raster
calculator.

Huidae Cho

On Tue, Aug 01, 2006 at 10:48:54AM -0700, Jonathan Greenberg wrote:
> So I'm in a bit of a quandary here -- I want to use a MFD flow algorithm,
> but I want it used on a surface of precipitation (so the accumulation isn't
> calculating "number of pixels", rather a "real" value).  r.watershed allows
> me to assign a surface value, but isn't MFD.  Is anyone aware of any
> algorithms that do both (use MFD and per-pixel values), either in GRASS or
> Arc (or in some other package?)  Thanks!
> 
> --j
> 
> --
> 
> Jonathan A. Greenberg, PhD
> NASA Postdoctoral Researcher
> NASA Ames Research Center
> MS 242-4
> Moffett Field, CA 94035-1000
> Phone: 415-794-5043
> AIM: jgrn3007
> MSN: jgrn3007 at hotmail.com
> 
>