I have a mesh in .xdmf format with boundary markers, how can I plot the mesh with boundary markers after loading to dolfinx? Thank you.
See for instance this tutorial:
with XDMFFile(MPI.COMM_WORLD, "mt.xdmf", "w") as xdmf:
xdmf.write_mesh(mesh)
xdmf.write_meshtags(ct)