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[Nguyen Van Dang <question158315@xxxxxxxxxxxxxxxxxxxxx>]

Question #158315 on DOLFIN changed:
https://answers.launchpad.net/dolfin/+question/158315

    Status: Answered => Open

Nguyen Van Dang is still having a problem:
Your advices are very helpful. Now I can get both stiffness matrix and mass
matrix. Both of them are uBLASmatrix. Right? So, after having M, I call
M=M.invert(); to took the inverse of matrix M. I got the error: 'class
dolfin::Matrix' has no member named invert. Can you help me to solve this
problem? I also want to access to all members of this matrix. It means
m_{ij}. What will I do?
Thank you very much for your time and your help!

On Fri, May 20, 2011 at 4:46 PM, James Avery <
question158315@xxxxxxxxxxxxxxxxxxxxx> wrote:

> Your question #158315 on DOLFIN changed:
> https://answers.launchpad.net/dolfin/+question/158315
>
> James Avery posted a new comment:
> Sorry, you're of course absolutely right: The stiffness matrix is the
> Laplacian, and the *mass* matrix is the overlap matrix. The UFL code
> should be changed appropriately.
>
> --
> You received this question notification because you asked the question.
>


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Nguyen Van Dang

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