摘要
空间拓扑关系是空间数据建模、空间查询、分析、推理、制图综合、数据质量控制、数据更新等的基础。目前空间拓扑关系研究的主要成果仍然集中在拓扑关系的描述方面,在计算方面的阐述都非常薄弱,不足以指导系统开发人员编程实现。本文研究了IR2中两个简单线目标间拓扑关系的计算方法,重点分析了线/线拓扑关系计算的特点,提出了一种基于线段的线/线拓扑关系计算方法,并用VC++采用底层开发模式实现了基本线/线拓扑关系的计算。
Topological relationship is the foundation of spatial data modeling, spatial query, analysis, reasoning, cartographic generalization, data quality control, and data updating, etc. At present, many researchers studied the description of topological relations while there are few references about the computation of the topological relations, which is not enough for developers to implement this function. Thus in this paper, we focus our study on the computation of topological relationship between line objects in IR2. We analyzed the properties of the computation of the topological relations between simple lines, and presented one computation method of the basic topological relations between lines based on line segment. Further more, we realized this method using VC＋＋.
出处
《地理信息世界》
2009年第5期39-43,共5页
Geomatics World
基金
国家科技支撑计划项目资助(2006BAJ09B02)
关键词
拓扑关系
线段
线目标
计算
topological relations
line segment
line ohject
computation
