Hello Jean-Paul,
It works, thank you very much for you help.
Jiaqi
在 2016年7月17日星期日 UTC-4上午6:03:37，Jean-Paul Pelteret写道：
>
> Dear Jiaqui,
>
> The issue here is that when you choose a piece-wise constant ansatz you
> end up with exactly the same number of DoFs as there are cells.
> deal.II usuall
Dear Jiaqui,
The issue here is that when you choose a piece-wise constant ansatz you end
up with exactly the same number of DoFs as there are cells.
deal.II usually treats the output of scalar cell data (e.g. if you were to
output the material ID of each cell) in a special way, so you just need
