ufl team mailing list archive

[Martin Sandve Alnæs <martinal@xxxxxxxxx>]

On Mon, Jun 8, 2009 at 4:13 PM, Garth N. Wells<gnw20@xxxxxxxxx> wrote:
>
>
> Martin Sandve Alnæs wrote:
>>
>> I'll take a look at improving the error message and checking,
>> but try this (if I understand what you're trying to do correctly):
>>
>> kc = Function(mixed_element)
>> k1, c1 = split(kc)
>> dkc = TrialFunction(mixed_element)
>> dk, dc = split(dkc)
>>
>> ...
>> a1 = derivative(L1, kc, dkc)
>>
>
> Thanks. I managed to figure it out and it's now used in the  DOLFIN
> Cahn-Hilliard demo.
>
> Garth

Great. It doesn't seem to be checked in though.

Martin