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st: How can I get a rotated version of principal components in eigenvalue normalisation?


From   Thomas Lux <tholux2000@yahoo.de>
To   statalist@hsphsun2.harvard.edu
Subject   st: How can I get a rotated version of principal components in eigenvalue normalisation?
Date   Thu, 21 Aug 2008 20:32:34 +0000 (GMT)

Stata 9 displays principal components in unit normalisation, but one can diplay the principal components in eigenvalue normalisation by typing:  estat loadings, cnorm(eigen)
But how can I get a rotated version of these principal components in eigenvalue normalisation?

It seems that stata uses the principal components in unit normalisation for rotating even after diplaying the principal components in eigenvalue normalisation: 

pca v132 v1550 v148 v149  v150 v1330, mineigen(1)
estat loadings, cnorm(eigen)
rotate


And it also seems that stata dispays the unrotated principal components in eigenvalue normalisation after the roation:

pca v132 v1550 v148 v149  v150 v1330, mineigen(1)
rotate
estat loadings, cnorm(eigen)






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