Re: octave eigs function

[Abbott, Ben]

On May 23, 2013, at 7:42 AM, Ben Abbott wrote:

> On May 22, 2013, at 10:25 PM, Poulette Poulette wrote:
> 
>> De : Jordi Gutiérrez Hermoso <address@hidden>
>> À : Poulette Poulette <address@hidden> 
>> Cc : help octave <address@hidden> 
>> Envoyé le : Mercredi 22 mai 2013 16h01
>> Objet : Re: octave eigs function
>> 
>>> On 22 May 2013 08:06, Poulette Poulette <address@hidden> wrote:
>>>> I have Octave version 3.6.4 for mac (osX 10.8.3).
>>> 
>>> How did you install it, Mme Poulette?
>>> 
>>>> I don't know how to use/obtain eigs function to calculate eigen vectors and
>>>> eigenvalues.
>>> 
>>> You only need eigs if you're working with sparse matrices or if you
>>> only want a few eigenvalues of your matrix. Otherwise you can use eig.
>>> 
>>>> The error is : "eigs: not available in this version of Octave"
>>> 
>>> However you obtained Octave, it looks like you compiled it without
>>> ARPACK. You need to recompile Octave with ARPACK support.
>>> 
>>> - Jordi G. H.
>> 
>> I installed the octave-devel +atlas+docs through macports (I already have 
>> Xcode, Xquartz, etc...).
>> 
>> "port installed" gives : arpack @3.1.2_1+accelerate+gcc47+openmpi (active)
>> Thus I suppose Arpack to be installed...
>> 
>> Thanks
> 
> *** Please don't top post.  By replying at the bottom of the email, it is 
> easier to follow the conversation ***
> 
> Looking at the portfile for octave-devel it appears that the arpack 
> dependency is missing.  It is likely that you built octave prior to 
> installing arpack.
> 
>       http://www.macports.org/ports.php?by=name&substr=octave-devel
> 
> Can you file a bug report with macports?
> 
>       http://trac.macports.org/report/1
> 
> I've modified their portfile and renamed the port "octave36".  I've fixed the 
> lib-dependencies and the run-dependencies.  To use a local portfile, refer to 
> the link below.
> 
>       http://guide.macports.org/chunked/development.local-repositories.html
> 
> Or you should be able to fix things by working around the bugs in the 
> octave-devel portfile by first manually installing the lib and run 
> dependencies, uninstalling octave-devel, and then reinstalling octave-devel.
> 
>       sudo port install arpack +atlas
>       sudo port install epstool
>       sudo port install transfig
>       sudo port install pstoedit
>       sudo port uninstall octave-devel
>       sudo port install octave-devel +atlas+fltk
> 
> Since this will rebuild Octave from scratch, installing octave-devel should 
> take much more time than the rest.
> 
> Ben
> 
> <Portfile>

I've added a report to macports bug tracker.

        http://trac.macports.org/ticket/39201

Ben



-----------------------------------------------
Ben Abbott | Development Fellow | TriQuint Semiconductor, Inc.
1818 S. Orange Blossom Tr | Apopka, FL 32703 | ☎ (407) 884-3418 | ✉ 
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