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

Dylan Beaudette dylan.beaudette at gmail.com
Wed Sep 6 15:07:28 EDT 2006


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. 

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 

anyone familiar with r.buffer? 


Dylan Beaudette
Soils and Biogeochemistry Graduate Group
University of California at Davis

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