[petsc-users] Change entries after MatCopy

[Lisandro Dalcin]

On 13 May 2010 17:50,  <hxie at umn.edu> wrote:
> On May 13 2010, hxie at umn.edu wrote:
>
>>
>>>
>>> On 12 May 2010 19:18,  <hxie at umn.edu> wrote:
>>>>
>>>> Hi,
>>>>
>>>> If I use MatCopy to get a new matrix, can i use MatSetValues to change
>>>> some
>>>> entries of that matrix and do the assemble after that? Or if I just need
>>>> to
>>>> change some diagonal entries, can I use MatDiagonalSet to change the
>>>> entries
>>>> without assembling? Thanks.
>>>>
>>>
>>> Yes and Yes.
>>
>> The first way does no work. I will try the second way.
>
> Sorry. I made a mistake in the variable declaration. The first way works.
> Thanks.
>

Next time you ask something, please make it explicit what "does not
work" actually means. Such vague statements are not helpful for any of
us in order to help people.



-- 
Lisandro Dalcin
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