Double centers a distance matrix

Generates a double-centered matrix (row and column means are zero) from the weights of a distance matrix (see weights_from_distance_matrix()) and a distance threshold. This is a required step before the computation of Moran's Eigenvector Maps.

double_center_distance_matrix (
  distance.matrix = NULL,
  distance.threshold = 0
)

Arguments

distance.matrix

Distance matrix. Default: NULL.

distance.threshold

Numeric, positive, in the range of values of x. Distances below this value in the distance matrix are set to 0. Default: 0.

Value

A double-centered matrix of the same dimensions as x.

See also

weights_from_distance_matrix(), mem(), mem_multithreshold()

Examples

if(interactive()){

 #loading the distance matrix
 data(distance_matrix)

 x <- double_center_distance_matrix(
   distance.matrix = distance_matrix
 )
 x

 }