地形图中线状地物自动勾绘方法研究与实现  

Research and implementation of automatic drawing method of linear features in topographic maps

作　　者：罗时龙[1] 李磊 尚庆明 孙超 LUO Shilong;LI Lei;SHANG Qingming;SUN Chao(Huai'an Water Conservancy Surveying and Design Institute Co.,Ltd.,Huai'an,Jiangsu 223005,China)

机构地区：[1]淮安市水利勘测设计研究院有限公司,江苏淮安223005

出　　处：《测绘技术装备》2023年第4期90-94,共5页Geomatics Technology and Equipment

摘　　要：CASS软件在进行线状地物初步勾绘等编辑时,通常是由内业人员基于文字注记的一致性依次拾取高程点来完成。但是对于道路等线状地物测绘项目,这种操作将导致内业作业速度较慢,且反复缩放过程中还易导致错连、漏连等情况。基于此,本文定义了一种基于人工指定线状地物起始信息的高程点属性自动匹配与选点规则,能够实现有效高程点的自动、有序识别,并可利用基于C#.NET的AutoCAD二次开发技术进行工具研发。通过在实际工程中进行应用,发现基于自定义规则的工具可一键式完成线状地物的初步勾绘,从而为地形图绘制提供了参照和基准信息,提高了成图效率与质量。When CASS software is used to edit the initial outline of linear features,elevation points had to be picked by surveyors based on uniformity of text annotation.While for surveying projects of such linear features as roads,the method mentioned above will produce poor data editing efficiency,and also has such problems as misconnection and omission in the process of repeated scaling.For the problems above,an automatic attribute matching and point selection rule of elevation points based on the initial information of manually specified linear features projects is defined in this paper,and therefore,automatic and orderly identification of effective elevation points is realized,and tool development is done by using secondary development of AutoCAD technology based on C#.NET.The result shows that the rule proposed in this paper can help complete the work of preliminary drawing for the linear features by one-click mode,which will provide reference and benchmark information for topographic mapping and promote mapping efficiency and quality.

关 键 词：线状地物 自动勾绘 AUTOCAD二次开发 

分 类 号：P217[天文地球—测绘科学与技术]