dolfin team mailing list archive

[Kent-Andre Mardal <kent-and@xxxxxxxxx>]

On 10 May 2011 09:27, Garth N. Wells <gnw20@xxxxxxxxx> wrote:

> On May 10 2011, Kent-Andre Mardal wrote:
>
>  New question #156844 on DOLFIN:
>> https://answers.launchpad.net/dolfin/+question/156844
>>
>>
>> How should I initialize a matrix without a dofmap?
>>
>
> You can create a Matrix,
>
>  Matrix A
>
> but it must be initialised using a sparsity pattern. Sparse matrices are
> not properly defined by dimensions only, some backends do not support this,
> and using dimensions is basically useless in parallel,
>
> If you want a dense matrix, or one that does not require a sparsity
> pattern, you can use a backend that supports this, e.g. uBLASMatrix.
>
>
The matrix is sparse, but I want to do it all by hand :) The reason is that
I have two different meshes.


>
>  It seems that the resize function is taken away. Also the read function is
>> removed.
>>
>>
> Which 'read' function are you referring to? I don't think that there was
> ever a GenericMatrix::read function.
>
> Garth
>

I meant the read from file function.

Kent