一篇文章，利用DWG格式地形图建立城DEM， 利用VBA 语言编程,提取离散高程点及其高程注记,并将高程点与高程注记匹配存储 对等高线进行有效的离散化,提取等高线的高程信息.而后将提取的高程数据在ArcGIS以三维可视化的人机交互的方式剔除粗差,最后生成DEM.-an article, the use of topographical maps DWG format established City DEM using VBA programming language. Elevati

适用于将离散点云数据（.txt），转换为IGS格式- This procedure will be suitable for is separated the cloud data (txt), the transformation will be the IGS form-applied to discrete point cloud data (. Txt). Converting to IGS format - This procedure will be suitable for i s

用Java语言实现的空间聚类分析程序，对离散点按照距离标准进行分类。-Java language with the spatial clustering analysis procedures, in accordance with the distance between discrete points of criteria.