[GRASS-user] tweak r.buffer to incorporate dampening function

[Dylan Beaudette]

Answering my own question, looks like a combination of r.cost and r.mapcalc 
did the trick...

details at 11 !

Dylan

On Wednesday 06 September 2006 13:00, Māris Nartišs wrote:
> Hi,
>
> there was a discussion about similar topic some time a go
> [GRASS-user] [GRASSLIST:1081] Sediment dispersal modeling
>
> It would be nice if there could be some module that could simulate flow
> using user's defined equation. No, I don't have time right now to code it.
> ;)
>
> Maris.
>
> On Wednesday 06 September 2006 22:07, Dylan Beaudette wrote:
> > Greetings,
> >
> > So I have some points which represent the estimated locations of Wifi
> > networks in my neighborhood. Thus far I have been able to make some fun
> > maps which estimate the "density" of signal based on a couple simple
> > assumptions.
> > (http://169.237.35.250/~dylan/temp/sycamore-wifi-range-ogr_python.jpg)
> >
> > However, this method assumes a constant, circular coverage area. I would
> > like to model propagation of the wifi signal (assuming no interference
> > from trees, etc) using a simple equation realting relative signal
> > strength as a function of distance from the signal source.
> >
> > I have taken a quick peek at the source for r.buffer, and am wondering
> > how difficult it would be to modify it such that the module would
> > optionally write cells based on the distance from the starting point,
> > defined by some function.
> >
> > anyone familiar with r.buffer?
> >
> > Cheers,
>
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-- 
Dylan Beaudette
Soils and Biogeochemistry Graduate Group
University of California at Davis
530.754.7341