yes...I tried that before, but I get an error message as follow..
As you mentioned, I first learn this function in step 7 tutorial.
But the problem is that I want to integrate my vector-valued-solution to
exact-vector-valued solution, while step 7 compares scalar-solution.
Or is there any ways to compare each solution component separately? as it
did in step-7.
I am really thank you for your advice!!!!!
An error occurred in line <235> of file
</Users/jaekwangjk/dealii-8.4.1/source/dofs/dof_handler_policy.cc> in
function
static types::global_dof_index
dealii::internal::DoFHandler::Policy::Implementation::distribute_dofs(const
types::global_dof_index, const types::subdomain_id, DoFHandler<dim,
spacedim> &) [dim = 2, spacedim = 2]
The violated condition was:
tria.n_levels() > 0
The name and call sequence of the exception was:
ExcMessage("Empty triangulation")
Additional Information:
Empty triangulation
Stacktrace:
-----------
#0 2 libdeal_II.g.8.4.1.dylib 0x0000000104ef307c
_ZN6dealii8internal10DoFHandler6Policy14Implementation15distribute_dofsILi2ELi2EEEjjjRNS_10DoFHandlerIXT_EXT0_EEE
+ 300: 2 libdeal_II.g.8.4.1.dylib 0x0000000104ef307c
_ZN6dealii8internal10DoFHandler6Policy14Implementation15distribute_dofsILi2ELi2EEEjjjRNS_10DoFHandlerIXT_EXT0_EEE
#1 3 libdeal_II.g.8.4.1.dylib 0x0000000104ef2d97
_ZNK6dealii8internal10DoFHandler6Policy10SequentialILi2ELi2EE15distribute_dofsERNS_10DoFHandlerILi2ELi2EEERNS1_11NumberCacheE
+ 39: 3 libdeal_II.g.8.4.1.dylib 0x0000000104ef2d97
_ZNK6dealii8internal10DoFHandler6Policy10SequentialILi2ELi2EE15distribute_dofsERNS_10DoFHandlerILi2ELi2EEERNS1_11NumberCacheE
#2 4 libdeal_II.g.8.4.1.dylib 0x0000000104eb6797
_ZN6dealii10DoFHandlerILi2ELi2EE15distribute_dofsERKNS_13FiniteElementILi2ELi2EEE
+ 135: 4 libdeal_II.g.8.4.1.dylib 0x0000000104eb6797
_ZN6dealii10DoFHandlerILi2ELi2EE15distribute_dofsERKNS_13FiniteElementILi2ELi2EEE
#3 5 mystokes 0x0000000101350e7d
_ZN8MyStokes13StokesProblemILi2EE10setup_dofsEv + 397: 5 mystokes
0x0000000101350e7d
_ZN8MyStokes13StokesProblemILi2EE10setup_dofsEv
#4 6 mystokes 0x0000000101341a52
_ZN8MyStokes13StokesProblemILi2EE3runEv + 386: 6 mystokes
0x0000000101341a52 _ZN8MyStokes13StokesProblemILi2EE3runEv
#5 7 mystokes 0x0000000101340aa5 main + 69: 7
mystokes 0x0000000101340aa5 main
#6 8 libdyld.dylib 0x00007fff95b575ad start + 1: 8
libdyld.dylib 0x00007fff95b575ad start
#7 9 ??? 0x0000000000000001 0x0 + 1: 9
??? 0x0000000000000001 0x0
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