[Matrix-SIG] Adding a Sparse matrix object

[Herbert L. Roitblat]

I would very much like to see a sparse matrix implementation.  I also used
the facilities of matlab to do get the eigenvectors for a rather large
matrix.  I am not in a position to code such a system, but I would very
much like to see it.  Included with the matlab distribution is a white
paper on implementing sparse matrices.

Thanks very much for considering such an enterprise.
HLR

On Tue, 18 May 1999, Travis Oliphant wrote:

> 
> I had the necessity of iteratively inverting a large linear system with
> the conjugate gradient method and wanted to use Python, but there is only
> rudimentary sparse matrix support.  (I couldn't find anything to solve my
> problem (without extra coding in C)).  So I had to use MATLAB, which has a
> rather nice sparse matrix implementation.
> 
> Is there an interest in developing a sparse matrix object with appropriate
> methods and functions defined to complement the array object?  I
> suppose to be symmetric it should be a sparse array object... I'm
> interested in generating some discussion on this topic if there are any
> takers.
> 
> Thanks,
> 
> Travis Oliphant
> 
> 
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Herbert Roitblat, Ph.D.             
Professor of Psychology             roitblat@hawaii.edu
University of Hawaii                (808) 956-6727  (808) 956-4700 fax
2430 Campus Road,                   Honolulu, HI 96822 USA