Dear all,
I'm trying to get a Brownian bridge kernel (kernelbb) for each combination of
two consecutive animal locations (see commands below) and put them, with a
loop, inside a list. It works well at the beginning but after 42 runs, it
appears the following warning :
>Error in seq.default(yli[1], yli[2], by = diff(xg[1:2])) :
> invalid (to - from)/by in seq(.)
I looked at the coordinates, at the id, at the time of the run 43 and it's all
good...
I looked on the net and it happened to only one person and there was no answer
to his post.
Someone could help me?
## commands
BBtraj <- list()
for (i in 1:(nrow(loc@data)-1)) {
BBtraj[[i]] <- kernelbb(as.ltraj(loc@coords[i:(i+1),],
date=loc@data$time[i:(i+1)], id = as.character(loc@data$id[i:(i+1)]),
typeII = TRUE), sig1=as.numeric(as.character(loc@data$sig1[i])), sig2= 5, grid
= 1000)
}
Rémi Lesmerises, biol. M.Sc.,
Candidat Ph.D. en Biologie
Université du Québec à Rimouski
remilesmeri...@yahoo.ca
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