[petsc-users] Example for MatInvertBlockDiagonal

[Cyrill Vonplanta]

Dear PETSc-Users,

I would like to use the inverted block diagonals of a a matrix. I have seen the 
function MatInvertBlockDiagonal() but I don’t know how to create a matrix out 
of them or an array of block matrizes.

Does anyone have an example on how to use  **values to create a PETSc matrix?

Thanks
Cyrill