[petsc-users] symmetric matrix

Eleni Siampli siaeleni at hotmail.com
Thu Aug 9 23:45:05 CDT 2012

What about nz and nnz?
Thank you for the quick answer

On Thu, Aug 9, 2012 at 11:36 PM, Eleni Siampli <siaeleni at hotmail.com> wrote:

Hello all,
Lets say that I have a square Mat A, nxn and is upper triangular. The rest elements are 0.for example: lets say that I have a matrix 3x3 : [5 7 8;0 9 1;0 0 2]What I want is to take the symmetric matrix: [5 7 8;7 9 1;8 1 2]
I think that I have to use MatCreateSeqSBAIJ(), but I don't understand exactly how can I use it.What is the block?
Set blocksize to 1 and you should have what you want.

   Matt Thank you in advance,Helen 		 	   		  

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
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