dolfin team mailing list archive

[Anders Logg <logg@xxxxxxxxx>]

There is no way to automatically project between meshes, so you have
to do it manually.

You can get the parent mesh of a refined mesh by doing

    ...
    mesh.refine();
    Mesh& parent = mesh.parent();

If you refine multiple times, you can get the whole hierarchy of
meshes by

    MeshHierarchy meshes(mesh);

I have just added a new and improved mesh library to DOLFIN. The base
class is NewMesh. After we have release 0.6.2, we will concentrate on
porting everything to the new mesh.

Automatic projection of functions between meshes should be added at
some point.

/Anders


On Thu, Aug 24, 2006 at 10:50:36AM +0200, Dag Lindbo wrote:
> Hi,
> 
> I have a question about the mesh class. I have a function defined on
> some mesh. This mesh is refined. What is the best way to project the
> function from the old to the new mesh?
> 
> As far as I can tell, this is not done automatically. To do this
> manually, I assume, involves allocating a new vector and computing the
> transformation between the two meshes. Where does the original mesh go,
> after being refined? How should I do the projection? 
> 
> Regards,
> Dag Lindbo
> 
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