Creating nodes, mouths and sources

• The nodes of the network are an important component of a river network.  They are the locations where polylines connect to each other.

• A polyline is made up of vertices and the end vertices are referred to as nodes.

• If you have made any changes to the network, such as deleting or moving polylines you must rebuild the associated node information.

• Stream ordering algorithms require the network to have correct node information for it to process correctly.

• RivEX allows you to:

• Create nodes and node ID fields
• Create mouth and source nodes
• Extract the pseudo nodes of a network
• Construct a pseudo node free river network
• Transfer catchment ID to nodes