Hello,



I am trying to do factor analysis using principle components analysis.

I use “fa” in package “psych”. I would like extract principal components
until the eigen value <1. Two questions:



First, can I calculate the eigenvalue of the covariance matrix and decide
the number of eigenvalues>1 and use the number as the number of factors?
Compared to the SPSS, it looks that the number obtained by this way is much
more.



Second, can some functions provided by R do this job?



Thanks.



Gencheng Guo

MCCL Lab, ECE,

University of Alberta

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