It is often preferable to use the primal edges (lines) to visualise metrics on the dual graph (i.e. instead of using points).
This release implements a change where primal edges are automatically copied across to dual graph nodes when using the graphs.nx_to_dual() method. Downstream conversion via io.network_structure_from_nx() will likewise retain the primal edge geometry for visualisation of metrics written to dual node GeoDataframe structures.