Options for exporting discontinuous solution?

Question

Is there a way (or hack) to write discontinuous solutions to a file in FEniCS? I realize the built-in visualizer may not be able to do this, but is there a workaround to view discontinuous solutions in Paraview?

Thanks!

Answer 1

• HDF5 (preferred) and XML are lossless outputs. Suitable for reading back into DOLFIN.
• XDMF (preferred) and VTK are visualization formats. Both of them handle piece-wise constants and fallback to continuous P1 interpolation for anything else.
• ParaView can visualize piece-wise constants.

Hence you can project/interpolate your discontinuous function to piece-wise constants, output to XDMF and plot in ParaView.

Comments

Thank you, Jan!