Hi everyone,
after you helped me to get rid of my last problem, here's a new one...
No big thing.
After having solved the system I'm interested in the divergence of my
solution, ideally at the same points as the actual solution is computed
and saved to e.g. a gnuplot file by DataOut (I assumed them to be the
DoFs or are they just the vertices?)
I found the get_function_gradients member of FEValuesBase and this
actually works. But using this I get the divergence on each quadrature
point, but not on the same points as DataOut prints the solution.
Is there a way to obtain this?
Thanks.
Timo
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