利用1:2000数字地形图编制1:10000建库数据的实践与探索

摘要

目前,我国很多城市拥有适时更新的大比例尺数字地形图,如何利用已有资源快捷地编制中小比例尺的建库数据,值得研究和探讨.文中给出在MicroStation中利用1:2 000数字地形图编制1:10 000建库数据的方法与技术.使用数字高程模型编制等高线并结合地形和高程模型进行等高线的编辑、裁剪,采取从数字地形图上直接拾取和外业调查相结合的方式获取地形要素的属性值,有效解决编制地理信息系统建库数据的实际问题.%We have timely large-scale digital Line Graphic in many cities presently. It is worthy to study how to use existing data to edit small-scale database data The paper discussed the method and technology to use MicroStation software to edit 1:10 000 database data with 1:2 000 digital line graphic. Making contour line with digital elevation model, editting contour line refer to line graphic and elevation model,obtaining attribute data with the united method of picking up from digital line graphic directly and indagating on field are effective solution to practical problems.