【摘要】 三维GIS是真实感地理信息的一种直观有效的表达方法,且其空间分析功能满足了用户进行查询、分析地理信息的需求,在地学、城市规划等领域得到广泛应用。首先给出了三维GIS的简介,然后详细探讨了三维GIS的几种实现方法,并对它们的优缺点进行对比,给出了各种方法的适用情况。更多还原

【Abstract】 3D GIS is an intuitive and effective method of realistic geo-information.Its spatial analysis function meets the user’s needs of inquiring and analyzing to the geo-information.3D GIS is widely used in geoscience and urban planning.This article introduces the 3D GIS firstly.Then it discusses the implementation methods of 3D GIS in detail,and their merits and faults were analyzed.At last,the paper gives the suitable conditions for different applications.更多还原