private static Resource attributeMappingToVertexAttribute(ReadGraph graph, DistrictNetworkResource DN, Resource attribute) throws DatabaseException {
Resource attr = null;
if (attribute.equals(DN.Mapping_VertexMapping_ElevationAttribute))
- attr = DN.Vertex_HasElevation;
+ attr = null; // ignore elevation as well
else if (attribute.equals(DN.Mapping_VertexMapping_AddressAttribute))
attr = DN.Vertex_HasAddress;
else if (attribute.equals(DN.Mapping_VertexMapping_DeltaPressureAttribute))