[R] how to get coefficient and scores of Principal component analysis in R?

[smb123]

Actually, the loadings are quite different from the coefficients.  The
loadings are simply correlations of the original values to the scores for a
PCA factor.  The coefficients, on the other hand, allow one to compute the
scores.  There is a coefficient for each variable.  The coefficient is
multiplied with the standardized variable and then added to the next
coefficient multiplied by its standardized variable ets.  The general
formula 

<http://r.789695.n4.nabble.com/file/n4704832/PCA_formula.jpg> 



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