摘要
空间实体的拓扑关系是地理信息系统进行空间分析、决策支持的基础.拓扑关系的关键点在于拓扑结构的构建.首先介绍了点集拓扑理论,归纳了有实际应用价值的各种拓扑关系,分析了拓扑模型中的最基本拓扑元素和空间实体的关系;然后提出了一种要素类的拓扑构建方法,其算法以MAPGIS7.0空间实体的结构为依据,主要体现要素分裂的思想.实践证明,这些方法能够有效的构建空间实体的拓扑关系.
The topology relationship of spatial entities is the basis of GIS applications in spatial analysis and decision support. The crucial point of topology relationships is the building of topological structure. This paper firstly introduces the point set of topology theory, enumerating all kinds of topology relations which have practical application value. The relationship be tween a base topology element and spatial entity in the topology model is also analyzed. Then a topology building method is put forward, using feature classes. The algorithms accompany with the spatial entity model of MAPGIS7.0. These algorithms mainly present the idea of feature splitting. These methods are proved effective for building topological relationships of spatial entities in practice.
出处
《地球科学（中国地质大学学报）》
EI
CAS
CSCD
北大核心
2006年第5期590-594,共5页
Earth Science-Journal of China University of Geosciences
基金
国家"863"项目:面向网络海量空间信息的大型GIS(No.2003AA133010)
关键词
逻辑拓扑结构
拓扑构建
分裂
拓扑元素
logical topological structure
topology building
split
topology element.
