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Re: eig() function

From: John W. Eaton
Subject: Re: eig() function
Date: Fri, 10 Oct 1997 00:24:28 -0500

On  9-Oct-1997, Marvin Vis <address@hidden> wrote:

| > If sorting the eigenvalues and their corresponding eigenvectors in the
| > eig() function is not complicated and can speed up the process, wouldn't
| > it be better to add the sorting algorithm as an additional OPT feature in
| > the eig function instead of the above macros?
| Try using the flipud() and fliplr() functions on your v,d matrices above...
|         function [v,d] = eigd (x)
|          [v,d]   = eig (x);
|          v = fliplr(v);
|          d = flipud(fliplr(d));  % or use:  d = diag(flipud(diag(d)))
|                                  % ...whichever is faster
|       end
| My personal vote is to not load any of the built-in linear algebra package
| subroutines.

I agree, and since it is possible to do what you want by defining a
separate function, I'm not likely to add such a feature to eig myself.
But if someone else contributes the code, I'd probably agree to install


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