[petsc-users] From AIJ to CSR

[Su Yan]

Hi, is there any way that I can extract the index information and element
array from a AIJ matrix? Say, I have a Mat A, which is created using the
CSR format with
MatCreateSeqAIJ<http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/Mat/MatCreateSeqAIJ.html#MatCreateSeqAIJ>().
How can I get int *ia, int *ja, and double *array out of A?

Thanks,
Su
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