This article develops a program which draw the contour interval contour automatically with Autolisp language in the AutoCAD environment.Fit the geomorphology of the region and automate the calculation of the regional surface area and volume with AutoCAD software in three-dimensional,so as to greathy improue the effciency of plotting contour line,reduce errors.%利用Autolisp语言开发了在AutoCAD环境下自动绘制不同等高距的等高线程序,且利用AutoCAD软件中的三维命令拟合该地区地貌,对区域表面积和体积实现自动化计算,从而大大提高了绘制等高线的效率,减少失误。
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