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Generating nodes from your river network


Nodes are the junctions at which polylines join each other, this ensures the network is topologically correct.  Each polyline has two nodes a from-node (the point at which a line starts) and a to-node (the point at which a line ends).  For RivEX to process the river network for stream orders, the network must have correct node information stored within the attribute table of your polyline dataset.

More advice about creating nodes is given in the manual.
Create new node ID fields for the river network
Create a layer of all network nodes
Create a layer of only mouth nodes
Create a layer of only source nodes
Create a layer of only pseudo nodes
Transfer polylines attribute to the nodes layer
Create a pseudo node free network

Sources extracted from a network
Sources extracted from a network