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. 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.

weights_from_distance_matrix(), mem(), mem_multithreshold()

## Examples

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