DownStream

This method can be used for tracing in an oriented network. It will start from a link and trace in the forward (downstream) direction as long as there is only one directed link from the next node (unique direction for flow). Links without direction are ignored. You can use direction 512 / 1024 as in a normal street network.

This method is only useful for utility networks, such as sewers, water pipes etc. It has little relevance for street networks.

Output linklist is in the order of flow, starting with the input link.

Syntax: DownStream(link: integer; linklist: TIntegerList)

See also Trace and UpStream