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Re: st: Stata drops my PCA factors


From   Sergiy Radyakin <serjradyakin@gmail.com>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   Re: st: Stata drops my PCA factors
Date   Mon, 10 Jun 2013 21:06:42 -0400

sysuse auto, clear
factor w l g h, pcf
predict p1 p2

sysuse auto, clear
factor w l g h, pcf mineigen(0.5)
predict p1 p2

See "Statistics with Stata", by Lawrence C.Hamilton.

Best, Sergiy


On Mon, Jun 10, 2013 at 7:10 PM, Ghazal Zulfiqar <gmzulfiqar@gmail.com> wrote:
> Hello,
> I am hoping I can get some help on the PCA I am running. Stata keeps dropping all factors except for the first. When I try to predict p1 p2 it says "regression scoring assumed, excess variables dropped". What does this mean? How can I get more than one factor?
>
> Thanks,
> Ghazal Zulfiqar
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