Getting an underlying 3-vector description from a sparse,local, matrix

[yaron at oak-research.com]

Hi Petsc-users
I'd like to get the 3-vector description (NZ values,Indexs,Pointers) from
a local sparse matrix- I need those in order to interface a Petsc matrix
object with another software package.
Any idea on how to do that ? I'm sure there are already some methods that
give access to the underlying arrays...

Thanks much
Yaron
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