空间对象及其拓扑关系

Spatial Object and Topological Relation

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.