Plotting DG Functions in 1D

[Chris Richardson]

Related to issue #59, DG functions also plot badly in 1D. e.g.

mesh = UnitIntervalMesh(10)
DG0 = FunctionSpace(mesh, "DG", 0)
F = interpolate(Expression("sin(10*x[0])"), DG0)
plot(F, interactive=True)

[Jan Blechta]

@chris_richardson What do you mean plot badly in 1D? Everything gets interpolated onto CG1 in arbitrary dimension before plotting.

[Prof Garth Wells]

Looks ok on fine mesh.

Making it look 'good' would require supporting cell-wise plotting in the VTK wrapper, which I don't think is worth the effort.