【摘要】 介绍虚拟地理环境的基本含义 ,虚拟现实和可视化技术 ,探讨了线、面地理对象的时态信息表达方法。在此基础上 ,以近、现代黄河三角洲为例 ,给出了在虚拟地理环境中三角洲海岸线的变迁和三角洲地形地貌动态显示的方法更多还原

【Abstract】 The concept of Virtual Geographical Environment is introduced, and the brief summary of Virtual Reality and Visualization is given. The visual expression methods of temporal information of line and surface geo-objects are proposed. On this basis, combined with the Yellow River Delta, the ways of dynamic vision of the change of the coastline and the terrain of the Yellow River Delta are given in Virtual Geographical Environment.更多还原