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

[Bill Spotz]

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                                              **
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