基于加权Voronoi图的宝鸡地区城市影响区的划分  

Division of Urban Influenced Regions of Baoji City Based on Weighed Voronoi Diagram

作　　者：张哲[1] 薛惠锋[1] 

机构地区：[1]西北工业大学自动化学院,陕西西安710072

出　　处：《计算机仿真》2008年第6期261-264,共4页Computer Simulation

基　　金：陕西省科技攻关计划(2005K04-G13)

摘　　要：城市影响区的计算是城市系统研究的主要内容之一。通过选取与确定城市影响区有关的社会、经济、人口等指标,利用主成分分析法,结合断裂点理论,得到宝鸡地区11个城市单元的综合规模强度,在此基础上借助于加权Voronoi图生成算法,分别计算了宝鸡地区11个城市单元基于人口规模与综合规模连续3年来城市影响区的变化,分析表明,宝鸡地区基于人口规模的城市影响区变化不大,而以综合指标为规模的城市影响区变化则较为活跃,体现了城市发展格局的演化趋势。The computation of influenced region is one of the main research fields in urban system. By choosing factors which are relative to society, economy and population to compute urban influenced regions, using principal component analysis and combining with breaking point theory, the integrated scale intensity of 11 urban units in Baoji city are obtained. Based on that, using weighed Voronoi diagram to get the 3 - year - influenced regions both on population and integrated scale of the 1 lurban units. The results proved that the influenced regions based on population changed little, but influenced regions based on integrated scale intensity changed a lot, which represents the evolvement trend of the urban distribution.

关 键 词：加权弗若洛依图 城市影响区 断裂点 主成分分析 

分 类 号：O411.3[理学—理论物理]