PeriodicBoundaryComputation_masters_slaves

dolfin.cpp.mesh.PeriodicBoundaryComputation_masters_slaves(mesh: 'std::shared_ptr< dolfin::Mesh const >', sub_domain: 'SubDomain', dim: 'std::size_t const') → 'dolfin::MeshFunction< std::size_t >'

This function returns a MeshFunction which marks mesh entities of dimension dim according to:

2: slave entities 1: master entities 0: all other entities

It is useful for visualising and debugging the Expression::map function that is used to apply periodic boundary conditions.