Re: [petsc-users] Set diagonals other than main diagonal

[Sajid Ali via petsc-users]

Got it. Thank you!

On Thu, Jan 3, 2019 at 11:46 AM Matthew Knepley  wrote:

> On Thu, Jan 3, 2019 at 12:24 PM Sajid Ali via petsc-users <
> petsc-users@mcs.anl.gov> wrote:
>
>> Hi,
>>
>> Is there any simple way of setting minor diagonals. The main diagonal can
>> be set by MatDiagonalSet but there's no equivalent way of doing it for for
>> minor diagonals. Does the preferred way to do this involve using
>> MatSetValues or there a simpler way?
>>
>
> No, we do not have an interface for this. You really only see this
> structure in 1D problems, so we have
> not spent time on it.
>
>   Thanks.
>
>  Matt
>
>
>> Thank You,
>> Sajid Ali
>> Applied Physics
>> Northwestern University
>>
>
>
> --
> What most experimenters take for granted before they begin their
> experiments is infinitely more interesting than any results to which their
> experiments lead.
> -- Norbert Wiener
>
> https://www.cse.buffalo.edu/~knepley/
> 
>


-- 
Sajid Ali
Applied Physics
Northwestern University

[petsc-users] Set diagonals other than main diagonal

[Sajid Ali via petsc-users]

Hi,

Is there any simple way of setting minor diagonals. The main diagonal can
be set by MatDiagonalSet but there's no equivalent way of doing it for for
minor diagonals. Does the preferred way to do this involve using
MatSetValues or there a simpler way?

Thank You,
Sajid Ali
Applied Physics
Northwestern University