[SciPy-dev] Matrix Structure Plots in scipy ?

Pearu Peterson pearu at scipy.org
Wed Oct 6 07:19:52 CDT 2004



On Wed, 6 Oct 2004, Nils Wagner wrote:

> The number of outputs is more than described in help (io.mmio)
>
>
>   mmread(source)
>       Reads the contents of the Matrix Market file 'filename' into the 
> matrix 'A'.
>
>       Inputs:
>
>         source    - Matrix Market filename (extension .mtx) or open file 
> object.
>
>       Outputs:
>
>         a         - sparse or full matrix
>
> Actually
>
> b,m,n,s = mmread('young1c')
>
> should be used.

Since the values for m,n,s are available via mminfo then I have changed 
the signature of mmread to

   a = mmread(source)

Btw, one can now also write sparse matrices using mmwrite.

Pearu




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