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st: RE: using "by" for scores in factor or PC analysis
The reason for this is that Stata can only
hold the last set of -pca- results in memory.
You need some other approach, such as using
Amita Rantidev Chudgar
> Stata allows PCA or factor analysis with "by" option
> so I can do
> sort region
> by region : pca var1 var2 var3
> but it does not allow "score" with by!
> I want to use the first component as a regional index and not
> being able
> to generate the score defeats the purpose of generating pca "by
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