[petsc-users] Set vector elements after VecAssembly?

[Jed Brown]

On Tue, Jun 5, 2012 at 1:48 AM, Thomas Witkowski <
thomas.witkowski at tu-dresden.de> wrote:

> Is it possible to update some vector entries after VecAssembly has been
> called?


If you use VecSetValues(), call VecAssemblyBegin/End again when you are
done.

You can also use VecGetArray() (or variants) to manipulate vector entries
without needing to call VecAssemblyBegin/End.


> Is due to some boundary conditions. In principle, I need something that is
> also done in MatZeroRows on the last two vector parameters, but without the
> need to provide some matrix information. Is this possible?
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