SAGA.ta_channels.0: Channel Network

A grid that contains elevation data.

An optional grid that provides information about flow directions. <br/>Values between 1 to 8 force the flow of a cell to be given to one its adjacent neighbor cells (1->NE, 2->E, 3->SE, 4->S, 5->SW, 6->W, 7->NW, 8->N). In case of other values the algorithm will use its own routing scheme. <br/>This option is in particular useful to supply the algorithm with routes that lead the flow through closed depression.

Dependent on the chosen 'Initiation Type' and 'Initiation Threshold' the values of this grid control where a channel is initiated.

Options:<br/> - Less than<br/> - Equals<br/> - Greater than<br/>Controls under which condition a channel is initiated.

Dependent on the chosen 'Initiation Grid' and 'Initiation Type' this value controls under which condition a channel is initiated.

Tracing: Convergence

Tracing: Stop after x cells with divergent flow

Tracing: Weight

Minimum Segment Length (Cells)

If a cell is part of a channel its value equals the channel order. Otherwise the cell is marked as no-data.

If a cell is part of a channel then its value shows the flow direction of the channel (1->NE, 2->E, 3->SE, 4->S, 5->SW, 6->W, 7->NW, 8->N). Otherwise the cell is marked as no-data.

This shapes layer will contain the resulting channel network in vector format (lines).