On 03/16/2018 02:38 AM, 'Maxi Miller' via deal.II User Group wrote:
I am calculating two PDEs, containing two variables (using a vector aproach,
as described in
https://www.dealii.org/8.5.0/doxygen/deal.II/group__vector__valued.html). Thus
both variables (or their solution) are stored in the solution-vector. Is there
a way to separate them, so that I can get the maximum value of each variable?
If I call vector.max(), I get the maximum value of both variables combined.
The easiest way may be to partition the vector based on vector component as we
do in a number of tutorial programs.
A different approach is to use DoFTools::extract_dofs() to get a mask that
indicates which DoFs belong to one particular vector components. This mask
then dictates which elements you want to take the maximum over.
Best
W.
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Wolfgang Bangerth email: bange...@colostate.edu
www: http://www.math.colostate.edu/~bangerth/
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