some work on arpack

Bill Baxter wbaxter at gmail.com
Sat Oct 21 18:36:21 CDT 2006


Here's something I've been wondering: is it ok to port Matlab
functions over to python?  If so, then it's maybe an afternoon's work
to get eigs working, given eigs.m and python Arpack wrappers.

I'm 99% sure it would *not* be kosher to copy-paste their code
directly, but it's not a copy paste job because of the differences
between Python and .m.  So it seems a grayer area to me.

--bb

On 10/22/06, Keith Goodman <kwgoodman at gmail.com> wrote:
> On 8/15/06, David Grant <davidgrant at gmail.com> wrote:
>
> > My idea is (if I have time) to write an eigs-like function in python
> > that will only perform a subset of what Matlab's eigs does for. It
> > will, for example, compute a certain number of eigenvalues and
> > eigenvectors for a real, sparse, symmetric matrix (the case I'm
> > interested in)... I hope that this subset-of-matlab's-eigs function
> > will not be too hard to write. Then more functionality can be added on
> > to eigs.py later... Does this make sense?
>
> Did you, or anybody else on the list, have any luck making a numpy
> version of eigs?
>
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