Transforms a distance matrix into a matrix of weights — weights_from_distance

Transforms a distance matrix into weights (1/distance.matrix) normalized by the row sums. Used to compute Moran's I values and Moran's Eigenvector Maps. Allows to apply a threshold to the distance matrix before computing the weights.

weights_from_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 distance.matrix. Distances below this value in the distance matrix are set to 0., Default: 0.

Value

A weighted distance matrix.

Examples

if(interactive()){

 #loading example distance matrix
 data(distance_matrix)

 #computing matrix of weights
 distance.matrix.weights <- weights_from_distance_matrix(
   distance.matrix = distance_matrix
   )

 distance.matrix.weights

}