Re: [Pysparse-users] example

[Dominique O. <dom...@gm...>]

On Fri, Aug 7, 2009 at 2:42 PM, Jaim Bucay <Jai...@ra...> wrote:

> Hi, I have never used Pysparse before. I would like to use it to create a
> very large Sparse Matrix and find its Eigenvalues. Do you know where I can
> get some simple examples of how to implement something like this. Thank you.


If you look at http://pysparse.sf.net
 and follow the documentation, you will find several examples that
will help you understand how to populate a sparse matrix with
Pysparse. For the computation of eigenvalues, look into the jdsym
module:
http://pysparse.sourceforge.net/jdsym.html
Be aware that this is a very expensive operation, especially if you
need *all* eigenvalues. Often,
you only need to find a few.

-- 
Dominique