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Message-ID: <5023ED11.9030407@ase-research.org>
Date: 2012-08-09T17:02:09Z
From: Mathieu Basille
Subject: Monte Carlo test on ENFA results problem
In-Reply-To: <502387B0.40509@isprambiente.it>

Dear Michela,

Your graphical problem just makes me think that you have a very peculiar 
dataset. Have you most points at the exact same location, and just a few 
others? It would explain the graphs.

As for the randtest call, it's hard to tell without the code you used and 
the outputs (but I understand there is none?). Could you please provide a 
reproducible example?

Altogether, I really feel like the structure of your data will explain a lot...
Best,
Mathieu.


Le 09/08/2012 05:49, Michela Giusti a ?crit :
> Dear all,
>
> I am doing an ENFA and MADIFA analysis and I have problems with the
> randtest.enfa command of the adehabitatHS package. It does not work even if
> the pc works for hours. I also used the command of the old adehabitat
> version but the problem is the same.
>
> Do you know if there is an alternative command(s) that I can use to perfom
> a Monte Carlo test on ENFA results (I need to obtain the p-value)?
>
> Another question is about the graphs of the MADIFA test that I have
> attached. Can anybody help me with the problem in the figure
> madifa284.jpg??? Any idea?
> I also attached the figure relative to the scatter plot of the same madifa
> results (scatter_mad284) where it seems that there are not problems.
>
> Thanks in advance for any help,
>
> Bye,
>
> Michela
>
>
>
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-- 

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Mathieu Basille, Post-Doc

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Laboratoire d'?cologie Comportementale et de Conservation de la Faune
+ Centre d'?tude de la For?t
D?partement de Biologie
Universit? Laval, Qu?bec

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http://ase-research.org/basille

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``If you can't win by reason, go for volume.''
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