[R-sig-Geo] madifa with qualitative variables

[jeanne.vallet]

Hi, 

I feel that it is not possible to use qualitative variables with madifa i.e.
using a Hill and Smith analysis instead of a principal component analysis on
the environmental table. Indeed, I receive the following error : "Error in
eigen(W) : infinite or missing values in 'x'" whereas the same command line
is ok with enfa. In madifa help, it is only written that the first argument
must be a dudi object not a pca. Is a trick exist to use a dudi.hillsmith
result instead of a dudi.pca as first argument in madifa ?
Thanks,

Jeanne Vallet
Postdoc in ecology
Groupe ESA, 55 rue Rabelais, B.P. 30748, 49007 Angers cedex 01, France.
mail : j.vallet at groupe-esa.com 
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