belltailjp

import matplotlib.pyplot as plt
import numpy as np
from sklearn import manifold

cities = "Athens Barcelona Brussels Calais Cherbourg Cologne Copenhagen Geneva Gibraltar Hamburg HookOfHolland Lisbon Lyons Madrid Marseilles Milan Munich Paris Rome Stockholm Vienna".split(" ")
d = np.array([
    # from eurodist dataset: https://rstudio-pubs-static.s3.amazonaws.com/221886_5c57ad0f5ff546e8af6386162f29fabc.html
    [   0, 3313, 2963, 3175, 3339, 2762, 3276, 2610, 4485, 2977, 3030, 4532, 2753, 3949, 2865, 2282, 2179, 3000,  817, 3927, 1991],
    [3313,    0, 1318, 1326, 1294, 1498, 2218,  803, 1172, 2018, 1490, 1305,  645,  636,  521, 1014, 1365, 1033, 1460, 2868, 1802],
    [2963, 1318,    0,  204,  583,  206,  966,  677, 2256,  597,  172, 2084,  690, 1558, 1011,  925,  747,  285, 1511, 1616, 1175],