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[Garth Wells <question156844@xxxxxxxxxxxxxxxxxxxxx>]

Question #156844 on DOLFIN changed:
https://answers.launchpad.net/dolfin/+question/156844

    Status: Open => Answered

Garth Wells proposed the following answer:
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.

> 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

>Kent
>
>

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