[R-sig-Geo] converting a single animal home range (estUD) to spixdf

[JLong]

Leila Brook wrote
> Hello,
> I am wondering whether anyone knows a way to convert estUD home range
> objects to the spatialpixelsdataframe class in adehabitatHR.
> 
> I have tried using estUDm2spixdf() but this requires an estUDm class for
> multiple animal home ranges rather than a single animal home range of
> estUD class. I am using R 2.15.1 64-bit and the latest version of
> adehabitatHR.
> 
> If anyone has a tip on how to do this I would greatly appreciate it.
> Kind regards

I suspect Clement C. may have a better solution, but here is a cheap
workaround that should do the trick.

a <- simm.crw(1:100,id="a")
b <- simm.crw(200:300,id="b")
bb1 <- kernelbb(a,1,0.2)                        #sig1, sig2 value just
picked by me
bb2 <- kernelbb(c(a,b),1,0.2)
str(bb1)
str(bb2)                                                 #Notice the
difference in structure, estUDm is a list of estUD
bb1.estUDm <- list()
bb1.estUDm$a <- bb1                             #basically just build a list
here
class(bb1.estUDm) <- "estUDm"              #set the class attribute
str(bb1.estUDm)
spdf <- estUDm2spixdf(bb1.estUDm)
image(spdf)



Cheers
Jed




-----
Jed Long
SPAR Lab, Dept. of Geography
University of Victoria, Canada
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