[petsc-users] MatGetSubMatrix for a Nested matrix

[Matthew Knepley]

On Mon, Aug 11, 2014 at 12:05 PM, Khai Hong Pham <khaipham at utexas.edu>
wrote:

> Hello Petsc-Users,
>
> In the MatGetSubMatrix, if the matrix mat is a nested matrix, for example
> [ A00 A01 | A10 A11], and I'd like to get submat  A10. Then the isrow and
> iscol will be the index of the subblock matrix which is (1,0) or it must be
> the index of all rows, columns of the submat in the mat (like in
> MatGetSubMatrix). Please help me to clarify this.
>

It is the later (the list of rows/cols)

  Thsnks,

    Matt


> Thanks
>
> Khai
>



-- 
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener
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