Dear David,
As noted by Matthias, when the aim is to use the function
kerneloverlaphr, you can still use this function on objects of class
"kbbhrud". You just have to remove the following two lines at the
beginning of the function kerneloverlaphr:
if (!inherits(x, "khrud"))
stop("x should be of class khrud")
The next version of adehabitat (submitted in a couple of days) will
allow the use of this function on objects of class "kbbhrud".
Many thanks for the suggestion,
Regards,
Clément.
David Douglas writes:
>
>
> Clément Calenge-2 wrote:
> >
> > Hi all,
> >
> > Yes, you are right: kernel UDs are often computed as a basis for further
> > analysis, including kernel overlap, but not only... It would be more
> > sensible to estimate UD once, and then using them for other analyses. I
> > planned to upload a new version of adehabitat to CRAN before the end of
> > the week, and I will include, on the help page of kerneloverlap, a new
> > function accepting a "khrud" object to perform this computation."
> > Many thanks for the suggestion,
> > Regards,
> >
> > Clément
> >
> >
>
> Greetings,
>
> I was taking the course described above to create a set of khrud objects for
> input to kerneloverlaphr.
> However, I was using kernelbb (rather than kernelud) to create the ud
> objects, on a fixed-grid.
>
> sig1a <- liker(trj1, sig2 = 1000, rangesig1 = c(10, 1000))
> bbridge1 <- kernelbb(trj1, as.data.frame(sig1a[1])[1,1], sig2 = 1000,
> grid=ascall )
>
> sig1b <- liker(trj2, sig2 = 1000, rangesig1 = c(10, 1000))
> bbridge2 <- kernelbb(trj1, as.data.frame(sig1b[1])[1,1], sig2 = 1000,
> grid=ascall )
>
> While I remain unsure of how to integrate 2 or more individual UD objects
> (say, bbridge1 and bbridge2) into an object that is compatible with
> kerneloverlaphr, it would seem that I'm up against a bigger problem:
>
> kerneloverlaphr requires an object type = khr, subclass=khrud,
> but kernelbb produces UD objects that have type=khr, subclass=kbbhrud.
> It appears kerneloverlaphr will not accept a kbbhrud object.
>
> Is there any way to change a kbbhrud object so it can be compatible with
> kerneloverlaphr?
> Or, are there reasons why Brownian Bridge UDs should not be candidates for
> kerneloverlaphr?
>
> David Douglas
>
>
>
>
>
>
>
> --
> View this message in context:
> http://www.nabble.com/overlap-tp21929181p23226781.html
> Sent from the AniMov mailing list archive at Nabble.com.
>
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--
Clément CALENGE
Office national de la chasse et de la faune sauvage
Saint Benoist - 78610 Auffargis
tel. (33) 01.30.46.54.14
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