[R-sig-ME] Factor analysis with lme?

Kevin Wright kw.statr at gmail.com
Wed Jan 30 21:17:57 CET 2008

I'm looking for an example of how (if?) lme can be used with factor
analysis.  By that, I mean modeling the residual variance/covariance
matrix as

Sigma = (Gamma)(Gamma)' + D

where Gamma is a vector (or matrix) corresponding to latent variables
and D is a diagonal matrix.

I have looked around but have not found any examples.  Pointers,
comments, and code are all welcome.

K Wright

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