From pgilbert@bank-banque-canada.ca  Tue Apr 20 18:44:59 1999
From: pgilbert@bank-banque-canada.ca (Paul Gilbert)
Date: Tue, 20 Apr 1999 13:44:59 -0400
Subject: eigenvalue/eigenvector calculations
References: <m10ZeAN-0000ZSC@verdi.stat.wisc.edu>
Message-ID: <371CBD1B.A0206ED3@bank-banque-canada.ca>

> was cross-checking my results in R and came up with the following
>peculiar behaviour.  If you use only.values = TRUE in eigen, you get
>noticeably different eigenvalues and I don't think it is just a matter

This might be related to the problem (bad values from eigen) I reported a couple
of weeks ago. I think it was tracked down to a problem in the header files. As I
understand it, the bug has been around for awhile,  but may not always bite -
unless you're using a snapshot where it might be fixed. (I've reverted to 0.63.3
as it didn't seem to cause me a problem there.)

Paul Gilbert

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eigenvalue/eigenvector calculations
Paul Gilbert