SAGA-GIS Module Library Documentation (v2.2.2)

Module Morphometric Protection Index

This algorithm analyses the immediate surrounding of each cell up to an given distance and evaluates how the relief protects it.
It is equivalent to the positive openness described in: Visualizing Topography by Openness: A New Application of Image Processing to Digital Elevation Models, Photogrammetric Engineering and Remote Sensing(68), No. 3, March 2002, pp. 257-266.

Parameters

 NameTypeIdentifierDescriptionConstraints
InputElevationGrid (input)DEM--
OutputProtection IndexGrid (output)PROTECTION--
OptionsRadiusFloating pointRADIUSThe radius in map unitsMinimum: 0.000000
Default: 2000.000000

Command-line

Usage: saga_cmd ta_morphometry 7 [-DEM <str>] [-PROTECTION <str>] [-RADIUS <str>]
  -DEM:<str>       	Elevation
	Grid (input)
  -PROTECTION:<str>	Protection Index
	Grid (output)
  -RADIUS:<str>    	Radius
	Floating point
	Minimum: 0.000000
	Default: 2000.000000