AutoCAD环境下线型批量换向方法

The method of line-type batch reversingin in AutoCAD Environment

当前一些主流GIS软件在处理地形图后,一般会转换为AutoCAD的DWG格式文件,但格式转换后其不少多段线、轻多段线等线状地物的方向相反,用人工的方式进行逐条反向效率过低。本文对此情况进行研究,运用Visual LISP编写代码的方式,进行批量换向,以达到高效、快捷、准确效果,在我司的地形图应用中得到了较为广泛的应用,为中小测绘单位进行线性地物批量反向起到抛砖引玉的作用。

At present,some mainstream GIS software will generally convert to AutoCAD DWG format file after processing topographic map,but many linear features such as polylines and light polylines have the opposite direction after format conversion,and the manual way is too inefficient to reverse one by one.Aimed at this situation,this paper puts forward the codes based on Visual LISP and carries out batch reversing,in order to achieve efficient,fast and accurate results,which has been widely used in our company's topographic map application,and provides reference for small and medium-sized surveying and mapping units to carry out batch reversing of linear objects.