Thanks Markus,
I see.
So from your second paragraph, I'm not even sure if I can do the
following (which is different than the situation i posed below) - I
solve a system of 2 equations (for u and v) and I use an FESystem:
FESystem<2> fe_vel (FE_Q<2>(1), 2);
And now i want to use that as a member of a collection :
hp::FECollection col;
col.push_back (FESystem<2> (FE_Q<2>(1), 2));
col.push_back ([something else]);
... can i not do this either???
Thanks
Dan
Markus Bürg wrote:
Hello Daniel,
no it cannot. If you want to use FECollection, you also have to use
the other parts of the hp-namespace, e.g. hp::DoFHandler,
hp::FEValues,....
If you use FESystem, then all FiniteElements contained in the FESystem
are active on all cells, but if you use FECollection, then there is a
pointer for every cell, which points to exactly one FiniteElement
contained in FECollection, which is then active on this particular cell.
Best Regards,
Markus
Daniel Goldberg schrieb:
The subject basically says it all. I see FESystem inherits from
FiniteElement, so an FESystem can take the place of a FiniteElement
object in an FECollection, but I don't see that FECollection can be
used interchangeably with a FiniteElement object - can it?
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