【摘要】 运用面向对象的分析技术,对GIS中点、线、面基本对象类和复杂对象类的分析与描述,结合时空拓扑的描述,总结出了一个面向对象的GIS时空数据模型,体现了面向对象理论在GIS时空数据建模中的思想.更多还原

【Abstract】 Object-oriented technique is widely used in GIS data modeling. Basing on such GIS data model, we design a GIS electronic map system, which contains most basic GIS functions, such as object-creating, map zoom, wandering, query and so on. This model embodies the possibility of applying object-oriented theory to setting up spatio-temporal data model in GIS.更多还原