基于GIS的交通网络空间分形测算系统的设计与开发

交通网络数据具有多时段、多尺度和空间性强等属性,其空间分布特征的研究是GIS-T数据挖掘和知识发现不可分割的1部分。空间分形特征是交通网络特征的1种内在的重要表现。因此,设计和开发1个空间分形特征的测算系统,能够很好地促进交通网络空间特征的研究。基于地理信息系统（GIS）,利用Visual Studio.NET开发了测算交通网络空间分形维数的系统。介绍和分析了系统的总体结构和各重要模块。系统的开发扩展和延伸了GIS-T的空间分析功能,构建了分形分析模块,定量地分析交通网络的强度、密度、结构和连通性等。以广州市公路交通网络为例,利用该系统进行了测算。

Development and Design of Spatial Fractal Calculation GIS System for Traffic Network

Because traffic network data have such natures of multi-time,multi-scale,and multi-source,the study of its spatial distribution characteristics is an indispensable part of data mining and knowledge discovering using GIS-T.As spatial fractal characteristic is a significant and inherent property of traffic network,therefore,the design and development of a fractal calculation system can greatly facilitate analysis of temporal/spatial distribution characteristics of traffic network.Based on GIS and Visual Studio.NET,a spatial fractal calculation system was developed.In this paper,the architecture and major modules of this system were introduced.This system extends the spatial analysis functionalities of GIS-T,and constructs the spatial fractal analysis module.It can be used to quantitatively analyze the intensity,density,structure and connectivity of traffic network.Finally,the system was demonstrated with the traffic network of Guangzhou.