SAGA-GIS Tool Library Documentation (v9.1.2)

Tool Sky View Factor

Calculation of visible sky, sky view factor (SVF) and related parameters.


References


Parameters

 NameTypeIdentifierDescriptionConstraints
InputElevationGrid, inputDEM--
OutputVisible SkyGrid, outputVISIBLEThe unobstructed hemisphere given as percentage.-
Sky View FactorGrid, outputSVF--
Sky View Factor (Simplified) (*)Grid, output, optionalSIMPLE--
Terrain View Factor (*)Grid, output, optionalTERRAIN--
Average View Distance (*)Grid, output, optionalDISTANCEAverage distance to horizon.-
OptionsGrid SystemGrid systemPARAMETERS_GRID_SYSTEM--
Maximum Search RadiusFloating pointRADIUSThe maximum search radius [map units]. This value is ignored if set to zero.Minimum: 0.000000
Default: 10000.000000
Number of SectorsIntegerNDIRS-Minimum: 3
Default: 8
MethodChoiceMETHOD-Available Choices:
[0] cell size
[1] multi scale
Default: 0
Multi Scale FactorFloating pointDLEVEL-Minimum: 1.250000
Default: 3.000000
(*) optional

Command-line

Usage: saga_cmd ta_lighting 3 [-DEM <str>] [-VISIBLE <str>] [-SVF <str>] [-SIMPLE <str>] [-TERRAIN <str>] [-DISTANCE <str>] [-RADIUS <double>] [-NDIRS <num>] [-METHOD <str>] [-DLEVEL <double>]
  -DEM:<str>      	Elevation
	Grid, input
  -VISIBLE:<str>  	Visible Sky
	Grid, output
  -SVF:<str>      	Sky View Factor
	Grid, output
  -SIMPLE:<str>   	Sky View Factor (Simplified)
	Grid, output, optional
  -TERRAIN:<str>  	Terrain View Factor
	Grid, output, optional
  -DISTANCE:<str> 	Average View Distance
	Grid, output, optional
  -RADIUS:<double>	Maximum Search Radius
	Floating point
	Minimum: 0.000000
	Default: 10000.000000
  -NDIRS:<num>    	Number of Sectors
	Integer
	Minimum: 3
	Default: 8
  -METHOD:<str>   	Method
	Choice
	Available Choices:
	[0] cell size
	[1] multi scale
	Default: 0
  -DLEVEL:<double>	Multi Scale Factor
	Floating point
	Minimum: 1.250000
	Default: 3.000000