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st: How to implement Discrete Principal Component Analysis by using POLYCHORICPCA


From   汪哲仁 <chejen.wang@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: How to implement Discrete Principal Component Analysis by using POLYCHORICPCA
Date   Fri, 6 Jan 2012 00:26:50 +0400

Dear all,

Happy New year.

Is there anyone who knows how to implement Discrete Principal
Component Analysis after running POLYCHORICPCA.ado. My question is
that, after obtaining the eigenvalues, how can I know the
corresponding eigenvector which is similar to those eigenvector
obtained after running PCA procedure, shown below.


Principal components (eigenvectors)

    ------------------------------------------------
        Variable |    Comp1     Comp2 | Unexplained
    -------------+--------------------+-------------
         foreign |   0.7071    0.7071 |           0
      gear_ratio |   0.7071   -0.7071 |           0
    ------------------------------------------------

Thank you very much for your help in advance.
with kind regards,


Charles Wang
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