Fig. 8
From: Social and economic flows across multimodal transportation networks in the Greater Tokyo Area
A map of the Tokyo area showing the flow solution found by the simplex algorithm using a sample of one million people/jobs (top) and the edge-use frequency among 300,000 generated trips to-work (bottom – reverse trip map available in the Additional file 1). To focus attention on the heavily used corridors, we filtered edges with fewer than 100 trips in these diagrams (but not in our analysis). Note that edges going in each direction for each pair of nodes overlap, and even at 0.3 opacity some of the difference in color may be due to the z-order. Map tiles by Stamen Design (2019), map data by OpenStreetMap(OpenStreetMap Contributors 2019).