[petsc-users] Get stiffness matrix by using Petsc's functions

[Tsung-Hsing Chen]

Hi,
I'am using Petsc to solve FEM problems.
Right now I just use MatSetValue() or MatSetValues() to build up the
stiffness matrix.
I wonder can I easily get stiffness matrix by using Petsc's functions.
By the way, I'am using unstructured grid (DMPlex).

Thanks a lot for your help,
Tsung-Hsing Chen
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