摘要
现实地理世界的实体在许多情况下不得不利用细节层次(LOD)的概念进行有效的表达,复杂的城市公共交通系统在实际应用中也存在类似的问题。文中对城市公共交通的站点进行空间层次分析,找出不同层次站点实体之间进行关联的必要性及关联方式。利用UM L技术和CA SE工具,在G IS系统中实现了这种联系,并对UM L技术的应用进行了讨论。
Many entities in the geographical world have to be represented under the concept of Level of Details （LOD）. The same challenge exists in the complicated urban public transport system. This paper analyzes the spatial hierarchy of urban transit stops, their representation, as well as their relationships. The representation model is realized in GIS with UML and CASE modeling tools. The application of UML tool is discussed in detail.
出处
《交通与计算机》
2006年第6期13-17,共5页
Computer and Communications
基金
国家重点实验室基金项目资助(03-0302)
教育部留学回国人员科研启动基金资助项目资助(教外司留2004-527)
