I think you want to use the kernel density funcionality of spatstat
[http://spatstat.org]; this will allow you to atach population at
polygon centers as weigths. Here are some examples:
> library(spatstat)
...
> wosCR.ppp <- ppp(wos...@coords[,1], wos...@coords[,2],
marks=wosmap$CR, window=wowin)
> densCR <- density.ppp(wosCR.ppp, 0.5, weights=wosmap$CR, edge=TRUE)
...
[http://spatial-analyst.net/wiki/index.php?title=Mapping_research_hot-spots]
T. Hengl
http://home.medewerker.uva.nl/t.hengl/
Ted Rosenbaum wrote:
Hi,
I am trying to make a smooth representation of US population data (ie in an
pixel image in spatstat) using county level population data. Does someone
know of a good way to do this.
(I am a beginner, so I apologize if this is an obvious question).
Thanks,
Ted Rosenbaum
--------------------------
Graduate Student
Department of Economics
Yale University
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