There are two kinds of network models in SuperMap: traffic network model and public facilities network model.

Traffic network model

Traffic network is a network without direction, and road traffic network is commonly used. Transportation Analysis is mostly used for path search and location. Although this network is a non-directional network, the flow direction is not entirely determined by the system control cabinet, but the resources flowing in the network can determine its flow direction. For example, when a pedestrian drives on a highway, he can choose the direction of turning, the time of stopping, and the direction of driving. However, there are certain restrictions, such as one-way line, not allowed to drop the first class, depending on the network properties.

Facility network model

The public facility network is a network with direction, such as natural gas pipelines, rivers and so on. Such a network is a directional network whose flow direction is determined by the sources and sinks in the network, and the flowing medium (water flow, current, etc.) In the network cannot determine the flow direction by itself. For example, the determination of the upstream path from one point to another to determine the source of pollution in a river, or the need to close the valves of those lines in time after a pipe break somewhere in the water network.