[R] Ellipse in PCA with parameters "a" and "b"defined.

[mary]

Ok...
so, in my model my "a"  is built using the standard deviation of the first
principal component and "b" with the second, so my "x" and "Y" should be :
 PCA $ scores [, 1], PCA $ scores [, 2] 
but in this way I do not get out a confidence interval set on my parameters
but many ellipses.

Thanks 
Mary



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