The relationship between SCORE and LOADING from PCA using princomp in MATLAB

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Torsionfree 2013-11-30

I'm doing PCA using princomp.

I'd like to confirm score is derived from X and loading. As far as I know, score = X*loading

My code is [loadb fact] = princomp( X , 'econ' );

But, "X*loadb" and "fact" are different.

Is there anybody explain how can I get score from loading and X?

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