[SciPy-user] eigenvalues of sparse matrix

David Grant david at dwavesys.com
Wed Oct 27 19:41:41 CDT 2004


Nils Wagner wrote:

> David Grant wrote:
>
>> Sorry, another sparse question: Is there anything is scipy which can 
>> find the eigenvalues and eigenvectors of a sparse matrix?
>>
> Unfortunately not yet.  I have added an entry in the Wiki page 
> (Support for ARPACK in scipy)
>
> http://www.scipy.org/wikis/featurerequests/PrioritiesAndWishlist
>
> There are some external tools
>
> http://jrfonseca.dyndns.org/work/phd/
> http://sourceforge.net/projects/pysparse/
> http://people.web.psi.ch/geus/pyfemax/

I just looked at pysparse again.  It looks like complex numbers cannot 
be stored.  Am I correct?

David



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