摘要
MO(MapObjects)是广泛应用于GIS软件开发的组件 ,但是它的数据模型的局限性决定了它不能够独立支持空间拓扑关系。而空间拓扑关系是GIS中空间分析的基础 ,从而限制了它在空间分析方面的应用。该文针对MO不能独立支持空间拓扑关系的问题 ,分析了空间拓扑关系和MO的空间数据模型 ,设计了用于存储拓扑关系数据的数据库 ,给出了建立空间拓扑关系的过程 ,提出并实现了一种基于MO的空间拓扑关系的建立方法 ,扩展了MO的空间分析功能 。
MO is a kind of module commonly used for developing GIS software, but the weakness of its data model makes it impossible to support spatial topological relationship independently. But the spatial topological relationship is the foundation of spatial analysis in GIS, then its use in spatial analysis area is restricted. The spatial topological relationship and spatial data model of MO are analyzed, a database is designed to save spatial topological data,and the process of building spatial topological relationship is given in this paper, and then a method is designed and realized to build spatial topological relationship based on MO. This method expands the spatial analysis capability and application area of MO.
出处
《计算机仿真》
CSCD
2005年第1期73-75,83,共4页
Computer Simulation
关键词
数据模型
空间拓扑关系
空间分析
Data model
Spatial topological relationship
Spatial analysis
