SAGA 9.4.2 | Tool Library Documentation

Sky View Factor


Description

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 Factorgrid, output, optionalTERRAIN--
Average View Distancegrid, output, optionalDISTANCEAverage distance to horizon.-
OptionsGrid Systemgrid systemPARAMETERS_GRID_SYSTEM--
Maximum Search Radiusfloating point numberRADIUSThe maximum search radius [map units]. This value is ignored if set to zero.Minimum: 0.000000 Default: 10000.000000
Number of Sectorsinteger numberNDIRS-Minimum: 3 Default: 8
MethodchoiceMETHOD-Available Choices: [0] cell size [1] multi scale Default: 0
Multi Scale Factorfloating point numberDLEVEL-Minimum: 1.250000 Default: 3.000000

Command Line


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