ssMRCD (version 1.1.0)

geo_weights: Inverse Geographic Weight Matrix

Description

Calculates a inverse-distance based weight matrix for the function ssMRCD (see details).

Usage

geo_weights(coordinates, groups)

Value

Returns a weighting matrix W and the coordinates of the centers per neighborhood centersN.

Arguments

coordinates

matrix of coordinates of observations.

groups

vector of neighborhood groups.

Details

First, the centers (means of the coordinates given) \(c_i\) of each neighborhood is calculated. Then, the Euclidean distance between the centers is calculated and the weight is based on the inverse distance between two neighborhoods, $$w_{ij} = \frac{1}{dist(c_i, c_j)}. $$ It is scaled according to a weight matrix.

See Also

rescale_weights

Examples

coordinates = matrix(rnorm(1000), ncol = 2, nrow = 500)
groups = sample(1:5, 500, replace = TRUE)

geo_weights(coordinates, groups)