I am a newcomer to R trying to convert a SAS program to R.
Does anyone know if there is a functional equivalent of the SAS 
'Factor' procedure?

For example in SAS:

proc factor DATA=cor method=principal rotate=varimax proportion=0.9 scree

where 'cor' is a correlation matrix (as in the R 'cor' function)

This should get you a list of eigen values as well as a factor
pattern matrix.

Also why when I use the 'eigen' function in R does it seem to give
a subtly different answer to the eigen values generated by the above
program?

Many thanks for any help

Mark Strivens
-----------------------
Dept. Molecular and Human Genetics
Baylor College of Medicine
Houston, USA
strivens@bcm.edu
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