dolfin team mailing list archive

["Alessio Quaglino" <alessio@xxxxxx>]

> On Tue, May 15, 2007 at 06:42:18PM +0200, Johan Jansson wrote:
>> > Johan H., Johan J.,
>> >
>> > Could you add a demo for the projection of a function onto different
>> > meshes? I'd really like to see how it works.
>> >
>> > Garth
>>
>> Hi!
>>
>> There is such a demo in:
>>
>> src/demo/fem/nonmatching
>
> Does not exist.
>
>> also in:
>>
>> src/demo/pydolfin/projection/verification
>> src/demo/pydolfin/projection/nonmatching-continuous
>> src/demo/pydolfin/projection/nonmatching-discontinuous
>
> None of these work.
>
>> A mesh refinement/coarsening demo exists in:
>>
>> src/demo/mesh
>
> Moved to src/demo/mesh/refinement and I don't think it works, but it
> does do a lot of printing and says "mesh not ok" :-)
>
>> Note that I haven't tested these demos with the dolfin repository
>> version
>> for a while, I'll try to do that in the near future. Also note that
>> there
>> is still a major (but quite simple) optimization left for the projection
>> -
>> to exploit that we know which cell of the target mesh we are on when
>> evaluating functions on the source mesh (we only have to search through
>> the intersecting cells and not the whole mesh). So currently the time
>> complexity is not very good, but the implementation is robust.
>>
>>   Johan
>
> Sounds good.
>
> /Anders

Was this projection between different meshes implemented? I can't find
anything about it inside the documentation.

Alessio