摘要
论文首先讨论了传统的地理信息系统中空间对象的空间数据模型,提出了面向对象的层次矢量数据模型。然后定性地分析了空间对象点与点、点与线和点与区域之间的拓扑关系,并给出了一种形式化表达空间对象成分拓扑关系的模型。最后,将这种模型与空间对象之间的拓扑关系结合起来,使其可以方便地处理地理信息系统中的对象间的拓扑关系。
In this paper,the traditional spatial data models and data structures in geographic information system are first discussed,and a hierarchy vector data model of open object is put forward.Then the topological relations about point-point ,point-line and line-area of spatial objects are qualitatively analyzed.The model which expresses the topologi-cal relations of spatial objects' elements is also given.Finally,this model is combined with the topological relations of spatial objects in order to handle the topological relations in the GIS conveniently.
出处
《计算机工程与应用》
CSCD
北大核心
2004年第6期77-79,共3页
Computer Engineering and Applications
关键词
空间对象拓扑关系
相交模型
地理信息系统
spatial object,topological relation,intersectional model,geographic information system
