Fig. 8From: Urban morphogenesis analysis based on geohistorical road dataBetweenness centrality indicator calculated for the historical road network of Besançon in a 1786, b 1883, and c 1937. The histograms represent the distribution of the logarithm of way’s betweenness centrality. The dashed black line is the fitting of each histogram with a Gaussian mixtureBack to article page