[R] How to do varimax rotation for principal component based factor analysis, any packages?
Prof Brian Ripley
ripley at stats.ox.ac.uk
Sun Apr 16 13:57:53 CEST 2006
On Sun, 16 Apr 2006, ronggui wrote:
> I don't think the result from _princomp _ should be rotated.
> The definition of "principal components" explicitly indicates that the
> result is to have axes that are uncorrelated and line up in directions
> of maximum variance.
> If I am wrong,I hope some one else to point it out.
They can be, whether they should be is another matter. See the
Statistical Complements to MASS3 at
http://www.stats.ox.ac.uk/pub/MASS3/Compl.shtml for some examples and
The original post is starting from false premises: there is no `factanal
package', and the varimax function in stats is not confined to the results
If for some reason you want to use the so-called `principal component
factor analysis', you could make use of one of the several statistical
systems with names starting with S that provide it, or write your own R
> 2006/4/16, Yong Wang <wangyong1 at gmail.com>:
>> Dear R users
>> the factanal pacakge is always MLE, which package can do varimax
>> rotation with the results from princomp ?
>> thank you
>> R-help at stat.math.ethz.ch mailing list
>> PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
> Deparment of Sociology
> Fudan University
Brian D. Ripley, ripley at stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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