Lesley-Ann Dupigny-Giroux giroux at norton.geog.mcgill.ca
Wed Nov 22 07:00:00 EST 1995


Does anyone know whether i.pca uses a correlation OR covariance matrix to
generate the corresponding components? There is no reference to this in the
manual and the results from r.covar and m.eigensystem are dramatically
different depending on whether a correlation or covariance matrix was used.

Looking forward to any light that could be shed on this matter. Please e-mail
me directly at      giroux at felix.geog.mcgill.ca

L.A. Dupigny-Giroux

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