[R-sig-Geo] ENFA scatter plot problem & habitat suitability map question

[Mathieu Basille]

Dear Michela,

In addition to Alexandre answer, it is not advised to use the ENFA to 
produce suitability maps. You might be interested in the MADIFA instead, 
also available in adehabitatHS. See [1].

As for your scatter plot, you should investigate your variables 
individually, e.g. with ?hist.enfa (see the parameter 'score'). You may 
have a categorical variable, with only one level used, or something similar.

Hope this helps,
Mathieu.


[1] Calenge, C.; Darmon, G.; Basille, M.; Loison, A. & Jullien, J.-M. 
(2008) The factorial decomposition of the Mahalanobis distances in habitat 
selection studies. Ecology, 89: 555-566 doi 10.1890/06-1750.1


Le 06/27/2013 11:13 AM, Alexandre Villers a écrit :
> Hello,
>
> Regarding what you call "habitat prediction map", which I guess is habitat
> suitability (if this term is more suited), you can have a look at the
> spatial analyst page
> http://spatial-analyst.net/wiki/index.php?title=Species_Distribution_Modelling
> HTH
>
> Alex
>
>
> P.S.: by the way, you should avoid including images in your messages but
> rather provide a link to it/them...
>
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Mathieu Basille, PhD

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University of Florida \\
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(+1) 954-577-6314
http://ase-research.org/basille

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