On 5/16/19 2:41 PM, 'Maxi Miller' via deal.II User Group wrote:
> If I understand that correctly, the correct order for doing that would be:
> -> Interpolate boundary condition without any component mask, giving me a
> vector
> -> Loop over all elements in the vector, and cross-check with the mask (using
> extract_dofs()) if they should be interpolated in that way
> -> If yes, copy them to a second vector
> -> Repeat with the next boundary condition and new component mask
> -> After finishing: Replace first vector with second vector (or use a
> temporary vector as first vector)
> Is that correct?
> In addition: How do I treat different boundary markings, i.e.
> dirichlet-conditions on 0, neumann-conditions on 1, and similar stuff?
Something of this sort. Of course, if you had sorted your DoFs by component
(for example if you wanted to put things into a block vector), then the check
whether a particular DoF belongs to a particular component becomes pretty
trivial.
Best
W>
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Wolfgang Bangerth email: bange...@colostate.edu
www: http://www.math.colostate.edu/~bangerth/
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