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orngPCA deletes duplicate attributes , is it ok?

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orngPCA deletes duplicate attributes , is it ok?

Postby michael221 » Wed Dec 30, 2009 19:54

Hi ,
I'm trying to a PCA analysis to a 12X12 matrix .
Two columns in this input matrix are equal.
So because of this i get as factor loadings a 11 rows matrix.

Since id don't know much about PCA , is this the way it should be?
Won't it be better to return a 12 row matrix , with duplicate rows , for the sake of simplicity ?

thanks
michael

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