基于加权Voronoi图的城市影响范围划分

Delimitation of central cities influenced regions based on weighted-Voronoi diagram

确定中心城市的吸引范围是城市体系规划、城市经济区划的一项基础工作.总结并分析以往方法的问题和不足,以河南省为例,通过选取指标体系,运用统计分析和数据变换的方法,确定中心城市的中心性强度,在此基础上提出城市断裂点理论与加权Voronoi图相结合的方法,实现对各中心城市空间影响范围的界定与生成.

Based on analyzing the existing methods of delimitating influenced regions of cities, the complex components for calculating the central-strength value of each central city are selected; and the strength is calculated by means of principal component analysis. A new delimitation method of the central cities influenced region is given with help of weighted Voronoi diagram and breakpoint theory.