GetisOrdLocalStats: Locality-aware Getis-Ord G* statistics.

In biggis-project/soh: Hotspot analysis and stability metrics

Description

Locality-aware Getis-Ord G* statistics.

Usage

GetisOrdLocalStats(r, focus_matrix)

Arguments

r	Input raster
focus_matrix	Square matrix with odd number of rows/column and boolean cells.

Value

Returns a list used in the function GetisOrd:

rmean	Global mean of all raster cells.
n	Number of all cells within the raster.
SD	A raster where each cell corresponds to a focal standard deviation from area around the cell given by the matrix focus.
MEAN	A raster where each cell corresponds to a focal mean from area around the cell given by the matrix focus.
focus	Copy of the focus matrix given as input parameter.

Author(s)

Viliam Simko

Examples

library(raster)
r <- raster( matrix(rnorm(400), 20, 20) )
w <- weight_matrix_circular_fade(7, 2)
f <- weight_matrix_circular(11)
st <- GetisOrdLocalStats(r, f)
plot(GetisOrd(r, w, st))

biggis-project/soh documentation built on May 12, 2019, 8:30 p.m.