Tool Diversity of Categories

Grid based analysis of diversity. It is assumed that the input grid provides a classification (i.e. not a contiuous field). For each cell it counts the number of different categories (classes) as well as the connectivity within the chosen search window.

Author: O.Conrad (c) 2015
Menu: Grid|Analysis|Diversity

Parameters

	Name	Type	Identifier	Description	Constraints
Input	Categories	Grid, input	`CATEGORIES`	-	-
Output	Number of Categories	Grid, output	`COUNT`	number of different categories (unique values) within search area	-
	Diversity	Grid, output	`DIVERSITY`	distance weighted average of the number of different categories for distance classes	-
	Connectivity	Grid, output	`CONNECTIVITY`	-	-
	Averaged Connectivity	Grid, output	`CONNECTEDAVG`	average size of the area covered by each category that occurs within search area	-
Options	Grid System	Grid system	`PARAMETERS_GRID_SYSTEM`	-	-
	Connectivity Neighbourhood	Choice	`NB_CASE`	-	Available Choices: [0] Rook's case [1] Queen's case Default: 1
	Normalize	Choice	`NORMALIZE`	-	Available Choices: [0] no [1] by number of cells [2] by area size Default: 0
	Kernel Type	Choice	`KERNEL_TYPE`	The kernel's shape.	Available Choices: [0] Square [1] Circle Default: 1
	Radius	Integer	`KERNEL_RADIUS`	cells	Minimum: 0 Default: 2
	Weighting Function	Choice	`DW_WEIGHTING`	-	Available Choices: [0] no distance weighting [1] inverse distance to a power [2] exponential [3] gaussian Default: 0
	Power	Floating point	`DW_IDW_POWER`	-	Minimum: 0.000000 Default: 2.000000
	Bandwidth	Floating point	`DW_BANDWIDTH`	Bandwidth for exponential and Gaussian weighting	Minimum: 0.000000 Default: 1.000000

Command-line

Usage: saga_cmd grid_analysis 21 [-CATEGORIES <str>] [-COUNT <str>] [-DIVERSITY <str>] [-CONNECTIVITY <str>] [-CONNECTEDAVG <str>] [-NB_CASE <str>] [-NORMALIZE <str>] [-KERNEL_TYPE <str>] [-KERNEL_RADIUS <num>] [-DW_WEIGHTING <str>] [-DW_IDW_POWER <double>] [-DW_BANDWIDTH <double>]
  -CATEGORIES:<str>     	Categories
	Grid, input
  -COUNT:<str>          	Number of Categories
	Grid, output
  -DIVERSITY:<str>      	Diversity
	Grid, output
  -CONNECTIVITY:<str>   	Connectivity
	Grid, output
  -CONNECTEDAVG:<str>   	Averaged Connectivity
	Grid, output
  -NB_CASE:<str>        	Connectivity Neighbourhood
	Choice
	Available Choices:
	[0] Rook's case
	[1] Queen's case
	Default: 1
  -NORMALIZE:<str>      	Normalize
	Choice
	Available Choices:
	[0] no
	[1] by number of cells
	[2] by area size
	Default: 0
  -KERNEL_TYPE:<str>    	Kernel Type
	Choice
	Available Choices:
	[0] Square
	[1] Circle
	Default: 1
  -KERNEL_RADIUS:<num>  	Radius
	Integer
	Minimum: 0
	Default: 2
  -DW_WEIGHTING:<str>   	Weighting Function
	Choice
	Available Choices:
	[0] no distance weighting
	[1] inverse distance to a power
	[2] exponential
	[3] gaussian
	Default: 0
  -DW_IDW_POWER:<double>	Power
	Floating point
	Minimum: 0.000000
	Default: 2.000000
  -DW_BANDWIDTH:<double>	Bandwidth
	Floating point
	Minimum: 0.000000
	Default: 1.000000