[R] How to do varimax rotation for principal component based factor analysis, any packages?

[Prof Brian Ripley]

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 
references.

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 
of factanal().

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 
code.

>
> 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
>>
>> yong
>>
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>
>
> --
> »ÆÈÙ¹ó
> 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)
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