摘要
图廓信息作为地形图重要的内容,承载了地形图的的重要信息。人工手动对地形图图廓信息检查效率较低,因此利用计算机编程实现对地形图图廓信息的批量检查并自动纠正具有现实意义。文章基于地形图图廓的固有几何关系,编写了一个图廓自动检查程序,利用Teigha库实现在不打开DWG文件的情况下,完成地形图图廓图元信息的读取、检查与纠正。该程序对地形图图廓信息的检查处理效率较高,平均每幅地形图的处理时间仅需约1 s。实践证明,利用该程序不仅能对地形图图廓信息进行检查,还能对历史地形图图廓信息进行读取,具有较好的应用价值。
As an important content of topographic map,the map border information carries the important information of topographic map.The efficiency of manual inspection of map border information is lower,so it is of practical significance to use a computer to batch check the map border information and automatically correct it.In view of the inherent geometric relationship of topographic map,an automatic checking program of topographic map is written,which can be used to read,check and correct the graphic information of topographic map without opening the DWG file.The program has a high efficiency of checking and processing the topographic map border information.On average,the processing of each topographic map only takes about 1 s.Practice has proved that the use of this program can not only check the border information of topographic map,but also read the border information of historical topographic map,which has very good application value.
作者
修翠梅
杨仙瑜
XIU Cui-mei;YANG Xian-yu(Yunnan Zhongdi Spatial Information Tecnology Co.,Ltd.,Kunming Yunnan 650051,China)
出处
《地矿测绘》
2020年第2期22-25,共4页
Surveying and Mapping of Geology and Mineral Resources
