SAGA 9.4.2 | Tool Library Documentation

Surface Specific Points


Description

References: Peucker, T.K. and Douglas, D.H., 1975: 'Detection of surface-specific points by local parallel processing of discrete terrain elevation data', Computer Graphics and Image Processing, 4, 375-387


Parameters

 NameTypeIdentifierDescriptionConstraints
InputElevationgrid, inputELEVATION--
OutputResultgrid, outputRESULT--
OptionsGrid Systemgrid systemPARAMETERS_GRID_SYSTEM--
MethodchoiceMETHODAlgorithm for the detection of Surface Specific PointsAvailable Choices: [0] Mark Highest Neighbour [1] Opposite Neighbours [2] Flow Direction [3] Flow Direction (up and down) [4] Peucker & Douglas Default: 1
Thresholdfloating point numberTHRESHOLDThreshold for Peucker & Douglas AlgorithmDefault: 2.000000

Command Line


Usage: saga_cmd ta_morphometry 3 [-ELEVATION ] [-RESULT ] [-METHOD ] [-THRESHOLD ]
  -ELEVATION:   	Elevation
	grid, input
  -RESULT:      	Result
	grid, output
  -METHOD:      	Method
	choice
	Available Choices:
	[0] Mark Highest Neighbour
	[1] Opposite Neighbours
	[2] Flow Direction
	[3] Flow Direction (up and down)
	[4] Peucker & Douglas
	Default: 1
  -THRESHOLD:	Threshold
	floating point number
	Default: 2.000000