many thanks bálint -
this one helped me a lot!

in the case of a binomial outcome, would you then get the residuals by
taking the difference of observed and predicted average occurrence-rate per
node?

thanks,
kay

ps: i'll foward this to the list..

2012/3/21 Bálint Czúcz <czucz.balint@okologia.mta.hu>

> Hi, Kay,
> you can compute residuals from the ctree model, and fit a mantel
> correlogram with permutation tests on them to test for the presence of
> autocorrelation at different distances. (see e.g. the attached file).
> If there is some autocorrelation, you can re-sample your data omitting
> observations too close to each other. Maybe this is not the best and
> the most elegant solution, but it is often enough to see and get
> reassured that there is no problem of autocorrelation in the
> residuals.
>
> Best regards,
> Bálint
>
>
> On Wed, Mar 21, 2012 at 09:48, Kay Cichini <kay.cichini@gmail.com> wrote:
> > thanks manuel,
> >
> > i'm afraid unmarked can not deal with spatial autocorrelation -
> > see this post:
> >
> http://groups.google.com/group/unmarked/browse_thread/thread/f45bd5ab12aa127d/26446409f3e2a140?lnk=gst&q=spatial%23#26446409f3e2a140
> >
> > best,
> > kay
> >
> >
> > 2012/3/20 Manuel Spínola <mspinola10@gmail.com>
> >
> >> You need to look in the "unmarked" package.
> >>
> >> Best,
> >>
> >> Manuel Spínola
> >>
> >> 2012/3/20 Isidore AMAHOWE <ogoudje.amahowe@gmail.com>
> >>
> >> > This may be possible with an R packages but i don't know. What i've
> been
> >> > told is that a kind of analysis can be done with accupancy analysis
> and
> >> > this will give possibility to model the envioronmental factors that
> can
> >> > determine the presence of animal species. But this need a probabilitic
> >> > method.
> >> > good luck
> >> >
> >>
> >
> >        [[alternative HTML version deleted]]
> >
> >
> > _______________________________________________
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> > R-sig-ecology@r-project.org
> > https://stat.ethz.ch/mailman/listinfo/r-sig-ecology
> >
>
>
>
> --
> Bálint Czúcz, PhD
> Institute of Ecology and Botany
> Centre for Ecological Research
> Hungarian Academy of Sciences
> H-2163 Vácrátót, Alkotmány u. 2-4. HUNGARY
> Tel: +36 28 360122/137  +36 70 7034692
>

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