Tool Convergence Index (Search Radius)

Convergence Index (Search Radius)

References

Koethe, R. & Lehmeier, F. (1996): SARA - System zur Automatischen Relief-Analyse. User Manual, 2. Edition [Dept. of Geography, University of Goettingen, unpublished].

Author: O.Conrad (c) 2003
Menu: Terrain Analysis|Morphometry

Parameters

	Name	Type	Identifier	Description	Constraints
Input	Elevation	Grid (input)	`ELEVATION`	-	-
Output	Convergence Index	Grid (output)	`CONVERGENCE`	-	-
Options	Grid system	Grid system	`PARAMETERS_GRID_SYSTEM`	-	-
	Gradient	Boolean	`SLOPE`	-	Default: 0
	Difference	Choice	`DIFFERENCE`	-	Available Choices: [0] direction to the center cell [1] center cell's aspect direction Default: 0
	Radius [Cells]	Floating point	`RADIUS`	-	Minimum: 1.000000 Default: 10.000000
	Weighting Function	Choice	`DW_WEIGHTING`	-	Available Choices: [0] no distance weighting [1] inverse distance to a power [2] exponential [3] gaussian weighting Default: 0
	Inverse Distance Weighting Power	Floating point	`DW_IDW_POWER`	-	Minimum: 0.000000 Default: 1.000000
	Inverse Distance Offset	Boolean	`DW_IDW_OFFSET`	Calculates weights for distance plus one, avoiding division by zero for zero distances	Default: 1
	Gaussian and Exponential Weighting Bandwidth	Floating point	`DW_BANDWIDTH`	-	Minimum: 0.000000 Default: 1.000000

Command-line

Usage: saga_cmd ta_morphometry 2 [-ELEVATION <str>] [-CONVERGENCE <str>] [-SLOPE <str>] [-DIFFERENCE <str>] [-RADIUS <double>] [-DW_WEIGHTING <str>] [-DW_IDW_POWER <double>] [-DW_IDW_OFFSET <str>] [-DW_BANDWIDTH <double>]
  -ELEVATION:<str>      	Elevation
	Grid (input)
  -CONVERGENCE:<str>    	Convergence Index
	Grid (output)
  -SLOPE:<str>          	Gradient
	Boolean
	Default: 0
  -DIFFERENCE:<str>     	Difference
	Choice
	Available Choices:
	[0] direction to the center cell
	[1] center cell's aspect direction
	Default: 0
  -RADIUS:<double>      	Radius [Cells]
	Floating point
	Minimum: 1.000000
	Default: 10.000000
  -DW_WEIGHTING:<str>   	Weighting Function
	Choice
	Available Choices:
	[0] no distance weighting
	[1] inverse distance to a power
	[2] exponential
	[3] gaussian weighting
	Default: 0
  -DW_IDW_POWER:<double>	Inverse Distance Weighting Power
	Floating point
	Minimum: 0.000000
	Default: 1.000000
  -DW_IDW_OFFSET:<str>  	Inverse Distance Offset
	Boolean
	Default: 1
  -DW_BANDWIDTH:<double>	Gaussian and Exponential Weighting Bandwidth
	Floating point
	Minimum: 0.000000
	Default: 1.000000