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Re: eigs.m problem in Octave 3.2.2


From: David Bateman
Subject: Re: eigs.m problem in Octave 3.2.2
Date: Sat, 15 Aug 2009 23:00:41 +0200
User-agent: Mozilla-Thunderbird 2.0.0.19 (X11/20090103)

Tatsuro MATSUOKA wrote:
Hello

I have built octave-3.2.2 on MinGW( Windows)

octave.exe:13> n = 20;
octave.exe:14> k = 4;
octave.exe:15> A =  
sparse([3:n,1:n,1:(n-2)],[1:(n-2),1:n,3:n],[ones(1,n-2),1:n,-ones(1,n-2)]);
octave.exe:16> d1 = eigs (A, k)
d1 =

   19.407
   18.407
   18.096
   17.096

For my binary, eigs.oct works correct.  There is no 'eigs.m ' in octave 3.2.
The problem is not issue of octave 3.2.2 itself.

Perhaps you download your 0ctave 3.2.2 binaries from the package managing place 
on your linux
distribution.  If my guess is true, please ask at the ML of the application 
distribution site.

If you have built your octave by yourself, please show the kind of linux 
distribution (Redhat, Debial
etc.) and show configuration at the build process.

Regards

Tatsuro
--- david  wrote:

Hi,

I installed Octave 3.2.2, when I do: help eigs, I can see its help information 
as below, but
when I use it, it shows:

octave:16> a=[1 2 3;4 5 6;7 8 9];
octave:17> eigs(a)
error: eigs: not available in this version of Octave


octave:15> help eigs
`eigs' is a function from the file 
/usr/local/libexec/octave/3.2.2/oct/i686-pc-linux-gnu/e
igs.oct

 -- Loadable Function: D = eigs (A)
 -- Loadable Function: D = eigs (A, K)
 -- Loadable Function: D = eigs (A, K, SIGMA)
 -- Loadable Function: D = eigs (A, K, SIGMA,OPTS)
......


Does anyone know what is the problem? Is Octave 3.2.2 already built with ARPACK 
package?

Thanks a lot.



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Installing ARPACK before you build Octave might also be an idea

D.

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David Bateman                                address@hidden
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