If you are really serious about your variables being ordinal, you
should analyze them using polychoric correlations. See polycor package
by John Fox.
On Thu, Sep 17, 2009 at 10:52 AM, Mark Difford wrote:
>>> I have used the dudi.mix method from the ade4 package, but when I do the
>>> $index it sh
P. Branco wrote:
>> I have used the dudi.mix method from the ade4 package, but when I do the
>> $index it shows
>> me that R has considered my variables as quantitative.
>> What should I do?
You should make sure that they are encoded as ordered factors, which has
nothing to do with ade4's dud
Hi,
I want to do a pca using a set of variables which are ordered. I have used
the dudi.mix method from the ade4 package, but when I do the $index it shows
me that R has considered my variables as quantitative.
What should I do?
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