Getis-Ord Global G

Usage

global_g_test(x, nb, wt, alternative = "greater", allow_zero = NULL, ...)

Arguments

x: A numeric vector.
nb: a neighbor list object for example as created by st_contiguity().
wt: a weights list as created by st_weights().
alternative: default "two.sided". Should be one of "greater", "less", or "two.sided" to specify the alternative hypothesis.
allow_zero: If TRUE, assigns zero as lagged value to zone without neighbors.
...: additional methods passed to spdep::globalG.test().

Value

an htest object

Examples

geo <- sf::st_geometry(guerry)
nb <- st_contiguity(geo)
wt <- st_weights(nb, style = "B")
x <- guerry$crime_pers
global_g_test(x, nb, wt)
#> 
#> 	Getis-Ord global G statistic
#> 
#> data:  x 
#> weights: listw 
#> 
#> standard deviate = 3.8277, p-value = 6.467e-05
#> alternative hypothesis: greater
#> sample estimates:
#> Global G statistic        Expectation           Variance 
#>       6.464853e-02       5.882353e-02       2.315853e-06 
#>