Thanks for replying!
Could you explain more?
I considered mapping degree only when I assemble system... for example.
template <int dim>
void msurface<dim>::assemble_system ()
{
const MappingQ<dim> mapping (degree);
const QGauss<dim> quadrature_formula(degree+2);
FEValues<dim> fe_values (mapping, fe, quadrature_formula,
update_values | update_gradients |
update_quadrature_points | update_JxW_values);
....
but can I also input a non-default Mapping degree when I use
Vectortools::integrate_difference function?
I tried as ... but it seems that its not a proper way to use this
function...?
template <int dim>
void msurface<dim>::evaluate_error()
{
Vector<float> difference_per_cell (triangulation.n_active_cells());
const MappingQ<dim> mapping (degree);
VectorTools::integrate_difference (degree,
dof_handler,solution,Solution<dim>(),
difference_per_cell,QGauss<dim>(degree+2),VectorTools::L2_norm);
How can I use non-default Mapping in here? (I wonder specific lines of
code...)
Thank for giving me a help!
Regards,
Jaekwang Kim
2016년 11월 1일 화요일 오후 5시 19분 35초 UTC-5, Daniel Arndt 님의 말:
>
> Jaekwang,
>
> [...]
>>
>> VectorTools::integrate_difference
>> (dof_handler,solution,Solution<dim>(),
>>
>> difference_per_cell
>> *,QGauss<dim>(degree+**2**)*,VectorTools::L2_norm);
>>
> somegthing that immediately comes to mind is that you don't use a
> non-default Mapping in here although your boundary is curved.
> Make sure that you use an appropriate Mapping everywhere!
>
> Best,
> Daniel
>
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