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. > >> >> >> >
