[GRASS-user] tweak r.buffer to incorporate dampening function
dylan.beaudette at gmail.com
Wed Sep 6 19:53:39 EDT 2006
As promised, some details on getting an estimated power level as a function of
distance from network center: implemented with r.cost and r.mapcalc
On Wednesday 06 September 2006 14:53, Dylan Beaudette wrote:
> Answering my own question, looks like a combination of r.cost and r.mapcalc
> did the trick...
> details at 11 !
> 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://22.214.171.124/~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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Soils and Biogeochemistry Graduate Group
University of California at Davis
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