大比例尺数字化地形图曲线要素的缩编方法

Generalization Method of Geomorphic Elements in Large Scale Digital Topographic Map

由于南方CASS和清华山维EPS等主要数字图形处理软件开发的地形图缩编功能存在一定的不足,操作时效率低下,不易控制质量。针对韩城矿区大比例尺数字地形图的缩编工作,主要研究了曲线要素的处理,利用AutoCAD二次开发功能,实现了曲线要素的检查、删除、图层、宽度等的自动变更和编辑。生产实践证明,基于交互式制图作业,可以减轻作业强度和工作难度,大大提高了作业效率,保证了作业质量。

Due to the lack of topographical map generalization functions of major digital graphics processing software such as southern CASS and tsinghua shanwei EPS,the operation efficiency is low and it is difficult to control quality.Focuses on the generalization of large-scale digital topographic maps in Hancheng mining area.It mainly studies the processing of curve elements,and uses AutoCAD secondary development function to realize the automatic change and editing of curve elements,such as inspection,deletion,layer and width.Production practice proves that based on interactive drawing operations,the work intensity and work difficulty can be reduced,the work efficiency is greatly improved,and the work quality is guaranteed.