I'm sorry for cross postings, as I'm not sure where exactly to ask this
question:
I am trying to estimate a Brownian Bridge kernel home range using adehabitatHR.
I created
I created a traj file as below:
bobtraj<-as.ltraj(xy=bob_locs_ss[c("x","y")], id=bob_locs_ss$id,
date=bob_locs_ss$newdate, burst=bob_locs_ss$burst2)
Then tried to create a kernelBB as follows, with a reference grid around the
animal's home range:
bob_bbss<- kernelbb(bobtraj, sig1=4.0811, sig2=50, grid = refgrid, byburst =
TRUE, extent = 0.2)
I then got this error:
Error in as.vector(gr) : no method for coercing this S4 class to a vector
I didn't get the error and the function worked when I ran kernelBB() without
byburst=TRUE. However, I would like to keep this specification in the model, as
my data were collected at high-frequency with two days on and two days off, and
without the burst=TRUE, the kernelBB95 looks quite oversmoothed.
Can anyone provide any advice on how to fix this error?
Thanks for your help,
Leila Brook
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