This is the problematic data, especially the line 43, but when I removed that
line, it bugs at line 62 and so on.
sig1 time id UTMnorthin
UTMeasting
40 4.5766 2012.05.30 08:00:00 Ade-55419576 390052
41 4.5766 2012.05.30 10:00:00 Ade-55419581 390058
42 4.5766 2012.05.30 12:00:00 Ade-55419560 390045
43 4.5766 2012.05.30 14:00:00 Ade-55419574 390051
44 4.5766 2012.05.30 16:00:00 Ade-55419490 390051
45 4.5766 2012.05.30 18:00:00 Ade-55419435 390293
46 4.5766 2012.05.30 20:00:00 Ade-55419661 390876
47 4.5766 2012.05.30 22:00:00 Ade-55419934 390673
48 4.5766 2012.05.31 02:00:00 Ade-55420636 389777
49 4.5766 2012.06.05 02:00:00 Ade-75419275 391206
50 4.5766 2012.06.05 04:00:00 Ade-75419276 391202
This is a data frame so before the loop (see commands in the previous mail
below), I transform with the following commands:
>coordinates(fece)<-~UTMeasting+UTMnorthin
>fece@data$time <- as.POSIXct(strptime(as.character(fece@data$time),"%Y.%m.%d
>%H:%M:%S"))
Rémi Lesmerises, biol. M.Sc.,
PH.D candidate
Université du Québec à Rimouski
________________________________
De : David Winsemius <dwinsem...@comcast.net>
À : Rémi Lesmerises <remilesmeri...@yahoo.ca>
Cc : "r-help@r-project.org" <r-help@r-project.org>
Envoyé le : vendredi 17 mai 2013 13h53
Objet : Re: [R] Error with adehabitatHR and kernelbb
On May 17, 2013, at 7:44 AM, Rémi Lesmerises wrote:
> 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.
I wonder if that posting (like yours) had no data on which to display the
problem or to test potential solutions? I would think you would want to post
any setup objects and then data for items 40-45.
>
> 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)
> }
>
--
David Winsemius
Alameda, CA, USA
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