st: displaying variance-covariance matrix after "pca"

[Luciana Suran <ls845@nyu.edu>]

Dear STATALIST,

After running a Principal Components Analysis using the pca command, I 
ca't seem to obtain the variance-covariance matrix. I typed:

matric vc=get(VCE)
matrix list vc

and the return message says "symmetric vc[0,0]."

I have very little experience with computing matrices in STATA. Could 
someone help me out?

Thank you,
 Lucy
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