【摘要】 该文提出了一种构建3DGIS应用的三层结构方法,它由数据模型层、对象层和应用层三个层次组成;结合三层结构方法,首先分析和总结了地学中一些原型系统和应用软件的特点;然后在此基础上,采用了一种适合地学应用的混合数据模型,实现了一个面向地学应用的3DGIS原型系统;最后,对该三层结构方法在地学中的应用做出总结。更多还原

【Abstract】 The article presents a type of three-layer structure method to construct the 3D GIS application,and the three layers are data model layer,object layer,and application layer.Combined with the method,first the authors analyzeand summarize the characteristics of some protype systems and softwares for geoscience.Then,on the base of it,a hybrid data model is adopted to implement a 3D GIS protype system for geoscience.Finally,the application of three-layer structure method in geoscience is discussed.更多还原