地形图图式独立符号库的建立

THE CREATION OF INDEPENDANT SYMBOL-BASE OF TOPOGRAPHIC MAP

本文介绍了在《航测数字化成图系统》中,采用Auto CAD形文件,建立地形图图式独立符号库的原理和方法,并就如何保证符号库的精度、编形技巧等问题提出了合理性建议。符号库的精度达到了相应规范要求,可适用于任何以Auto CAD为图形支撑软件的测绘绘图软件。

This paper introduces the principles and methods of creatingsymbol-base of topographic map by means of Auto CAD shape files in 《Graph system of Aerial survey digitisation》and some rea- sonable suggestions on how to ensure the accuracy of symboi-base,the skills of creating shapes are put forward. The accuracy of symbol-baes reaches the corresponding standard which can supply charting software to any mapping that takes Auto CAD as the supporting software of graph.