[R-sig-Geo] spsample

Luca Candeloro luca.candeloro at gmail.com
Fri Jul 10 11:59:38 CEST 2015

following the example found in SpeciesDistributionModelling, a given number
of points is drawn randomly within a circle:

x <- circles(pts, d=50000, lonlat=T, col='light gray')
# sample randomly from all circles
> samp1 <- spsample(x at polygons, 250, type='random', iter=25)

Is there a way to specify weigths decreasing from the circle center, so
that random points are most likely near it?

thanks ,

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