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Oops! PCA plotting

From: Gerrit J. Kiers
Subject: Oops! PCA plotting
Date: Fri, 4 May 2001 09:28:18 +0200

I made a big mistake in my previous posting (Plotting a PCA with contours)

I presumed one could use
> normal_pdf(*somethingtodowitheigenvalue*,Mean_t(1,1),Var_t(1,1) )
for calculating the  probability along the two principal axis of the
ellipse, but obviously Mean_t(1,1),Var_t(1,1) are derived from the data
columns in data-matrix t and have nothing to do with the PCA calculation.


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