Facing land use planning, an electronic sand table based on digital elevation model (DEM) and Landsat-7 ETM image is adopted and developed by Visual C++ 6. 0 and OpenGL, the data as a example is from Tonglu County, Zhejiang Province.

• 最后以浙江省桐庐县富春江流域为例；以数字高程模型(DEM)和美国Landsat-7卫星的ETM遥感影像为数据源；用VisualC++6.；0与OpenGL开发环境实现了该地区面向土地利用规划的电子沙盘的制作。