SAGA-GIS Tool Library Documentation (v7.8.2)

Tool Effective Air Flow Heights

Effective Air Flow Heights


References


Parameters

 NameTypeIdentifierDescriptionConstraints
InputElevationGrid, inputDEM--
Wind Direction (*)Grid, input, optionalDIRDirection into which the wind blows, starting with 0 for North and increasing clockwise.-
Wind Speed (*)Grid, input, optionalLEN--
OutputEffective Air Flow HeightsGrid, outputAFH--
OptionsGrid SystemGrid systemPARAMETERS_GRID_SYSTEM--
Wind Direction UnitsChoiceDIR_UNITS-Available Choices:
[0] radians
[1] degree
Default: 0
ScalingFloating pointLEN_SCALE-Default: 1.000000
Search Distance [km]Floating pointMAXDIST-Minimum: 0.000000
Default: 300.000000
Constant Wind DirectionFloating pointDIR_CONSTconstant direction into the wind blows, given as degreeDefault: 135.000000
Old VersionBooleanOLDVERuse old version for constant wind direction (no acceleration and averaging option)Default: 0
AccelerationFloating pointACCEL-Minimum: 1.000000
Default: 1.500000
Elevation AveragingBooleanPYRAMIDSuse more averaged elevations when looking at increasing distancesDefault: 0
Windward FactorFloating pointLEE-Default: 0.500000
Luv FactorFloating pointLUV-Default: 3.000000
(*) optional

Command-line

Usage: saga_cmd ta_morphometry 11 [-DEM <str>] [-DIR <str>] [-DIR_UNITS <str>] [-LEN <str>] [-LEN_SCALE <double>] [-AFH <str>] [-MAXDIST <double>] [-DIR_CONST <double>] [-OLDVER <str>] [-ACCEL <double>] [-PYRAMIDS <str>] [-LEE <double>] [-LUV <double>]
  -DEM:<str>         	Elevation
	Grid, input
  -DIR:<str>         	Wind Direction
	Grid, input, optional
  -DIR_UNITS:<str>   	Wind Direction Units
	Choice
	Available Choices:
	[0] radians
	[1] degree
	Default: 0
  -LEN:<str>         	Wind Speed
	Grid, input, optional
  -LEN_SCALE:<double>	Scaling
	Floating point
	Default: 1.000000
  -AFH:<str>         	Effective Air Flow Heights
	Grid, output
  -MAXDIST:<double>  	Search Distance [km]
	Floating point
	Minimum: 0.000000
	Default: 300.000000
  -DIR_CONST:<double>	Constant Wind Direction
	Floating point
	Default: 135.000000
  -OLDVER:<str>      	Old Version
	Boolean
	Default: 0
  -ACCEL:<double>    	Acceleration
	Floating point
	Minimum: 1.000000
	Default: 1.500000
  -PYRAMIDS:<str>    	Elevation Averaging
	Boolean
	Default: 0
  -LEE:<double>      	Windward Factor
	Floating point
	Default: 0.500000
  -LUV:<double>      	Luv Factor
	Floating point
	Default: 3.000000