[Trilinos-Users] A nice way to plot sparsity pattern of Epetra Matrix Graphs?

[Davood Ansari]

Thank you for the comment.

These are huge parallel matrices.
I'd rather use any good third part library to plot them.
I'd appreciate it if some one know of a good library for plotting l sparsity
patterns
of large matrices even outside of Trilinos family.

Thanks.

On Thu, Feb 24, 2011 at 6:52 PM, Bill Spotz <wfspotz at sandia.gov> wrote:

> Davood,
>
> Within Ifpack, there are the Ifpack_Utils.{h,cpp} files which support the
> Ifpack_PrintSparsity and Ifpack_PrintSparsity_Simple functions.  These take
> Epetra_RowMatrix arguments.  They are also wrapped in PyTrilinos.
>
> More recently, a group of college students have been working on
> partitioning algorithms within Isorropia, and part of that work has included
> visualization.  This work is highly experimental at this point, is present
> only in a separate development branch, is only available within PyTrilinos,
> and is dependent upon the python imaging library.  But you get both the
> sparsity pattern and a color-coded parallel decomposition.
>
> -Bill
>
> On Feb 24, 2011, at 4:12 PM, Davood Ansari wrote:
>
> > Hi all
> > Does any body know a handy way of plotting parallel matrix sparsity
> patterns in Trilinos ?
> > Some time the matrices are so big sending them to common tool like Matlab
> would not work.
> >
> > Thanks
> > Davood
>
> ** Bill Spotz                                              **
> ** Sandia National Laboratories  Voice: (505)845-0170      **
> ** P.O. Box 5800                 Fax:   (505)284-0154      **
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>
>
>
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