pmedian(data, ncenters)

Description

The function calculates Euclidean distances between all possible rows of the matrix data. ncenters locations are then selected that minimizes the total distances to the nearest rows.

Arguments

• data::Matrix: Coordinates of locations
• ncenters::Int: Number of centers

Output

• PMedianResult: PMedianResult object.

Example

julia> data1 = rand(10, 2);

julia> data2 = rand(10, 2) .+ 50;

julia> data3 = rand(10, 2) .+ 100;

julia> data = vcat(data1, data2, data3);

julia> result = pmedian(data, 3);

julia> result.centers
3-element Vector{Int64}:
  1
 16
 21

 julia> result.objective
 11.531012240599605

pmedian_with_distances(distancematrix, ncenters)

Description

ncenters locations are selected that minimizes the total distances to the nearest rows.

Arguments

• distancematrix::Matrix: n x n matrix of distances
• ncenters::Int: Number of centers

Output

• PMedianResult: PMedianResult object.