空间对象及其拓扑关系  

Spatial Object and Topological Relation

作　　者：余慧[1] 张曙光[1] 刘英[1] 李国亚[2] 

机构地区：[1]武汉大学计算机学院,武汉430072 [2]武汉大学水利水电学院,武汉430072

出　　处：《计算机工程与应用》2004年第6期77-79,共3页Computer Engineering and Applications

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.

关 键 词：空间对象拓扑关系 相交模型 地理信息系统 

分 类 号：P208[天文地球—地图制图学与地理信息工程]