Message-ID: <Pine.LNX.4.31.0211051322320.9168-100000@gannet.stats>
Date: 2002-11-05T13:23:37Z
From: Brian Ripley
Subject: eigenvectors order
In-Reply-To: <71fba6e060.6e06071fba@teleline.es>
On Tue, 5 Nov 2002, YERUPAJA01 wrote:
> Hi,
>
> How the eigenvectors output by the eigen() function are ordered. The
> first column corresponds to the largest eigenvalue? or is the last
> column as in Octave?
>
> I'm performing a spatial-temporal analysis of some climatic variables
> so my matrices are MxN (locations*time)and I'm looking for the leading
> EOF's. As I have understand the eigenvectors columns represent those
> EOF's
>
> Any hints will be appreciated
The eigenvectors are in the order of the eigenvalues, and ?eigen tells you
that.
--
Brian D. Ripley, ripley at stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272860 (secr)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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