Global Spatial Autocorrelation for Shapes

Author: O.Conrad (c) 2023
Menu: Spatial and Geostatistics | Spatial Autocorrelation

Description

Calculates Moran's I and Geary's C for the selected variable of the input shapes. For geometries other than single points (i.e. multi-points, lines, polygons) the centroids are used as location.

References

Lloyd, C.D. (2011): Local Models for Spatial Analysis. CRC Press, Taylor & Francis Group, 2nd Edition, 336p.

Parameters

	Name	Type	Identifier	Description	Constraints
Input	Shapes	shapes, input	`SHAPES`	-	-
Output	Summary	table, output	`SUMMARY`	-	-
Options	Variable	table field	`VARIABLE`	-	-
	Weighting Function	choice	`DW_WEIGHTING`	-	Available Choices: [0] no distance weighting [1] inverse distance to a power [2] exponential [3] gaussian Default: 3
	Power	floating point number	`DW_IDW_POWER`	-	Minimum: 0.000000 Default: 1.000000
	Bandwidth	floating point number	`DW_BANDWIDTH`	Bandwidth for exponential and Gaussian weighting	Minimum: 0.000000 Default: 1.000000
	Search Range	choice	`SEARCH_RANGE`	-	Available Choices: [0] local [1] global Default: 1
	Maximum Search Distance	floating point number	`SEARCH_RADIUS`	local maximum search distance given in map units	Minimum: 0.000000 Default: 1000.000000
	Number of Points	choice	`SEARCH_POINTS_ALL`	-	Available Choices: [0] maximum number of nearest points [1] all points within search distance Default: 1
	Maximum	integer number	`SEARCH_POINTS_MAX`	maximum number of nearest points	Minimum: 1 Default: 20

Command Line

Usage: saga_cmd statistics_regression 16 [-SHAPES ] [-VARIABLE ] [-SUMMARY ] [-DW_WEIGHTING ] [-DW_IDW_POWER ] [-DW_BANDWIDTH ] [-SEARCH_RANGE ] [-SEARCH_RADIUS ] [-SEARCH_POINTS_ALL ] [-SEARCH_POINTS_MAX ]
  -SHAPES:           	Shapes
	shapes, input
  -VARIABLE:         	Variable
	table field
  -SUMMARY:          	Summary
	table, output
  -DW_WEIGHTING:     	Weighting Function
	choice
	Available Choices:
	[0] no distance weighting
	[1] inverse distance to a power
	[2] exponential
	[3] gaussian
	Default: 3
  -DW_IDW_POWER:  	Power
	floating point number
	Minimum: 0.000000
	Default: 1.000000
  -DW_BANDWIDTH:  	Bandwidth
	floating point number
	Minimum: 0.000000
	Default: 1.000000
  -SEARCH_RANGE:     	Search Range
	choice
	Available Choices:
	[0] local
	[1] global
	Default: 1
  -SEARCH_RADIUS: 	Maximum Search Distance
	floating point number
	Minimum: 0.000000
	Default: 1000.000000
  -SEARCH_POINTS_ALL:	Number of Points
	choice
	Available Choices:
	[0] maximum number of nearest points
	[1] all points within search distance
	Default: 1
  -SEARCH_POINTS_MAX:	Maximum
	integer number
	Minimum: 1
	Default: 20