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
> >
>

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