Breaking point calculation process

We input the town size and the shortest road distance into pre- transformation (Eq.6) and post- transformation (Eq.7) breaking point equations respectively, to analyze the spatial location changes of the breaking points.我们将城镇规模与最短道路距离分别代入变换前（公式6）与变换后（公式7）的断点方程中，以分析断点的空间位置变化。