From: "Bruno Luong" <b.luong@fogale.findmycountry>
Newsgroups: comp.soft-sys.matlab
Subject: Re: Error in using eigs function
Date: Sat, 22 Dec 2012 08:17:17 +0000 (UTC)
Organization: FOGALE nanotech
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"Payel Chatterjee" wrote in message <kb2k3v$3ml$>...
> I am trying to find only those eigenvalues for sparse matrix which are not infinte in values. For this purpose I used eigs function and did an inverse iteration to get only first few eigenvalues.
> However, I am getting this error:
> Error with ARPACK routine dsaupd: info = -9999
> Am I doing anything wrong somewhere conceptually. What does this error mean?
> Please suggest.

You are not necessary doing anything wrong. This function from ARPACk sometime fails on its own. This is my experience.