Select "Data Preparation->Terrain Positions->Streamline". Specify the input file and the output file.
Output: Streamline
The streamlines in the area.
DEM file
The DEM data of the area.
Algorithm: O'Callaghan and Mar
Define Streams: Flow Accumulation >
When the UDA of a pixel is larger than the threshold, the pixel is part of a streamline.
Coding Method
The way to label the streamlines.
Algorithm: Skidmore's (Skidmore, 1991)
Upper Threshold
The threshold to determine that a pixel is in a streamline.
Lower Threshold
The threshold to determine that a pixel is not a streamline.
Algorithm: Peucher and Douglas's ( Peucher and Douglas, 1975)
The methods all use local analysis of the data; they are “parallel” in the sense that the results at each point do not depend on the results already obtained at other points.