数字地图上线型比较和自动切剖面及工程量速算

Line type comparison on digital map, automatic cutting profile and engineering quantity fast calculation

分析了在CAD绘制的数字地图中,常用的各种线型的数据量、尺寸标注、可切断性等异同点,论述了如何 利用数字地形图和CAD技术对其进行转换,并用Visual Lisp编程自动切剖面,计算工程量。

The authors analyzed the similarities and dissimilarities of data quantity, dimensions mark and cutting off of all kind of line type on CAD digital map, discussed the transferring methods with digital topographic map and CAD technique, automatic cutting profile and engineering quantity fast calculation with Visual Lisp were expounded here, too.