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Figure 1 | EPJ Data Science

Figure 1

From: Gravity law in the Chinese highway freight transportation networks

Figure 1

Testing the traditional gravity law with GDP for the directed and undirected freight highway transportation networks constructed over five months. (a) Scatter plot of \(F_{ij}\) with respect to \(G_{i}G_{j}/d_{ij}^{2}\) for the directed network. (b) Binning plot of \(F_{ij}\) with respect to \(G_{i}G_{j}/d_{ij}^{2}\) for the directed network. (c) Scatter plot of \(W_{ij}\) with respect to \(G_{i}G_{j}/d_{ij}^{2}\) for the undirected network. (d) Binning plot of \(W_{ij}\) with respect to \(G_{i}G_{j}/d_{ij}^{2}\) for the undirected network

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