aple: Spatial autocorrelation estimator

In geostan: Bayesian Spatial Analysis

Spatial autocorrelation estimator

Description

The approximate-profile likelihood estimator for the spatial autocorrelation parameter from a simultaneous autoregressive (SAR) model (Li et al. 2007).

Usage

aple(x, w, digits = 3)

Arguments

x	Numeric vector of values, length n. This will be standardized internally with scale(x).
w	An ⁠n x n⁠ row-standardized spatial connectivity matrix. See shape2mat.
digits	Number of digits to round results to.

Details

The APLE is an estimate of the spatial autocorrelation parameter one would obtain from fitting an intercept-only SAR model. Note, the APLE approximation is not reliable when the number of observations is large.

Value

the APLE estimate, a numeric value.

Source

Li, Honfei and Calder, Catherine A. and Cressie, Noel (2007). Beyond Moran's I: testing for spatial dependence based on the spatial autoregressive model. Geographical Analysis: 39(4): 357-375.

See Also

mc, moran_plot, lisa, sim_sar

Examples

library(sf)
data(georgia)
w <- shape2mat(georgia, "W")
x <- georgia$ICE
aple(x, w)

geostan documentation built on April 3, 2025, 10:04 p.m.