应用GIS的空间分析功能实现道路网与出行小区的动态连接

Dynamic link between road network and traffic analysis zone with spatial analysis of GIS

基于 GIS的空间分析功能开发了一种动态连接道路网与出行小区的方法 ,通过该连接改善了交通量的分配精度 ;指出位于出行小区的一定范围内的道路结点都可能是该小区与道路网的连接点 ;为了计算每个结点被利用的概率 ,探讨了以这些结点为基础对出行小区进行空间的物理分割和属性的数学分割的原理及算法 。

With spatial analysis of GIS,authors develop a method to link traffic analysis zone with road network dynamically to improve the accuracy of traffic assignment model, and point out that all of the nodes within a certain area around the zone may be the potential access points. In order to calculate the access probabilities of the nodes, the principle and algorithm for dividing the zone spatially and attributably are analysed. Finally, the principle and algorithm with the data of a Japanese city are examined.