Just MatSetValues and MatAssembly* again. If you use ADD_VALUES, then you might MatZeroEntries before adding values.
Evan Um via petsc-users <[email protected]> writes: > Hi PETSC users, > > I want to solve a number of matrix-vector equations. In each equation, the > matrix has different values, but the sparsity pattern is unchanged. I can > destroy a current matrix and create a new matrix. However, is there a more > efficient way to do this task? Is there any code example for this kind of > problem? In advance, thank you very much for your comments. > > Regards, > Evan
