dolfin team mailing list archive

[Anders Logg <logg@xxxxxxxxx>]

Marie Rognes skrev 2010-10-14 12.28:
> On 14. okt. 2010 11:13, Gerd Wachsmuth wrote:
>> This works fine in 2D. But in 3D, extrapolation is not implemented.
>>
>>
>
> Ah.
>
> --
> Marie

The problem is that this functionality is missing in CGAL so we have to 
implement it ourselves and no one has done that yet.

-- 
Anders

-- 
Assembling over subdomain fails
https://bugs.launchpad.net/bugs/660334
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Status in DOLFIN: New

Bug description:
Following setup:

I have a mesh (with FunctionSpace V) and a submesh (with FunctionSpace W). Assembling a linear form on V over this subdomain involving a coefficient from W will fail.

I think the problem is that Dolfin would like to evaluate the function from W at the boundary of the subdomain. Maybe due to rounding errors this point lies outside the subdomain and the evaluation fails.

It does not happen, if W is a CG or DG space.