Topological Analysis of Geographical Flows

Beijing_road: The road network in Beijing. In the attribute table, osnode_id is ordered origin point id; oenode_id is ordered destination point id; order_id is ordered section id.Flow: OD flow data.Flow_Euclidean.py: The program of calculating the topological relations between flows in Euclidean space.Flow_road_network.py: The program of calculating the topological relations between flows in the road network space.Flow_Carpool.py: The program of determining which trips can be shared.