[R-sig-Geo] conversion of ascii grid (or SpatialPixelsDataFrame) to adehabitatHR::estUD-class

[andrewaduff]

Hi List,

I have a series of ascii grid files representing home range probability
distribution functions.  The home ranges were calculated in various R
packages (adehabitat, bbmm, ks) and I would like generate volume indices
(PHR, VI, BA) for them using Clement Calenge's kerneloverlaphr function in
adehabitatHR.  Does anyone know how to convert an ascii grid (or
SpatialPixelsDataFrame) to an object of class adehabitatHR::estUD-class
("estUDm")?

Thanks in advance,

Andy

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