[GRASS-user] [GRASSLIST:1096] Re: Accumulating values from a second raster in a flow model

[David Finlayson]

Have you checked out the r.watershed module? The "flow" input to that
command allows you to set the "weight" of each cell exactly as you
describe. Unfortunately, this command is not designed for giant grids
the way r.terraflow is. I don't think that r.terraflow allows you to
change the weight of each cell though.

On 6/13/06, Jonathan Greenberg <jgreenberg at arc.nasa.gov> wrote:
> Hi there -- what is the best/fastest way to generate 1) a flow
> direction/accumulation model from a DEM, and then 2) accumulate values from
> a DIFFERENT raster that correspond with the cell positions from the DEM --
> basically I want to take a flow acc. model and apply it to a map of
> per-pixel precipitation values to get a first-order estimate of per-pixel
> water accumulation, assuming conductivity in all cells is the same.
>
> --j
>
> --
>
> Jonathan A. Greenberg, PhD
> NRC Research Associate
> NASA Ames Research Center
> MS 242-4
> Moffett Field, CA 94035-1000
> Phone: 415-794-5043
> AIM: jgrn3007
> MSN: jgrn3007 at hotmail.com
>
>
>


-- 
David Finlayson