SparseMatrix

[Hermes Sampedro]

Dear all, 

I would like to ask how can I access certain values of a sparseMatrix.

First I tried by using the global indices which does not work:

my_sparse_matrix(local_dof_indices[i], local_dof_indices[j])

I can not see any function to get the value. I found the function val, but it is not fully clear to me.

I would appreciate some help.

Thank you

Regards, 

H.

[Wolfgang Bangerth]

On 10/1/21 7:33 AM, Hermes Sampedro wrote:
>
> I would like to ask how can I access certain values of a sparseMatrix.
> First I tried by using the global indices which does not work:
>

> /my_sparse_matrix(local_dof_indices[i], local_dof_indices[j])/

That is how it is supposed to work. Can you explain what "does not work"
mean in more specific terms?

Best
W.


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Wolfgang Bangerth email: bang...@colostate.edu
www: http://www.math.colostate.edu/~bangerth/

[Hermes Sampedro]

Dear Wolfgang,

Thank you for your answer. Knowing that this is the way to do that, helped me to found the problem I had.

Thank you again.

H.

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