ffc team mailing list archive

[Kristian Oelgaard <k.b.oelgaard@xxxxxxxxx>]

On 27 January 2010 23:39, Anders Logg <logg@xxxxxxxxx> wrote:
> Some results from tabulate_tensor seemed to be off by a factor 2 (in 2D).
> I tracked this down to a scaling issue where we need to scale the
> weights on a facet such that the sum of the weights is 1.
>
> I have added this in monomialintegration.py where I multiply by 2 in
> 2D and by 6 in 3D.

You don't need any scaling, but if we did shouldn't it be 8 in 3D? We also had a scaling factor of 0.125 in the old FFC.
This is why some results are 'still' wrong for quadrature I think.

Kristian

> Is a similar scaling needed for quadrature? If so, we can have a
> common scaling.
>
> It looks like it's needed for quadrature. Check the results for the
> last tabulate_tensor in the output for Normals.ufl.
>
> --
> Anders
>
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