geo_weights {ssMRCD} | R Documentation |
Inverse Geographic Weight Matrix
Description
Calculates a inverse-distance based weight matrix for the function ssMRCD
(see details).
Usage
geo_weights(coordinates, groups)
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.
Value
Returns a weighting matrix W
and the coordinates of the centers per neighborhood centersN
.
See Also
Examples
coordinates = matrix(rnorm(1000), ncol = 2, nrow = 500)
groups = sample(1:5, 500, replace = TRUE)
geo_weights(coordinates, groups)
[Package ssMRCD version 1.1.0 Index]