[dune-fem] VTK format for a DG, 0-degree discrete function

[Sacconi, Andrea]

Hi everyone,

just a very brief question.

Suppose you want to plot a certain property that is element-dependent, for example if an element is to be labelled as liquid or solid for two-phase problem.
Just to see if I have implemented my algorithm correctly, I created a DG function, of degree 0, and assigned value 1 to all and only all the local dofs corresponding to the liquid  elements.
In this way, when I open Paraview, I should see a clear distinction red/blue between the two clusters of elements.

I have used vtk-cell as option for the class Parameter, but the final plot is more shaded. I also noticed there is a remark about "projected in the DG case".
Am I missing something? How can I manage to have the clear distinction between solid and liquid?

Thanks again for your kindness and help!

Andrea
__________________________________________________________

Andrea Sacconi
PhD student, Applied Mathematics
AMMP Section, Department of Mathematics, Imperial College London,
London SW7 2AZ, UK
a.sacconi11 at imperial.ac.uk
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