摘要
按照现有的模式,数字地形图生产大多以图幅为单位,采用AUTOCAD等数据格式进行存储。而GIS入库要求数字地形图数据以行政区域等区块为单位存储。两种不同的存储方式使数字地图数据在入库后,要对居民地、道路、水系和管线等地形要素做接边处理。针对海量数字地形图数据入库后的接边问题,提出一种基于图幅边界缓冲区分析,兼顾要素属性匹配约束,实现多图幅数据自动接边的方法。该方法简单、智能、判断准确,极大提高了接边效率以及准确率,实际应用中取得了很好效果。
According to modern pattern,the mapsheet always as a unit for digital topographic map producing which is stored by data format such as AUTOCAD.While the GIS storing requirements that it needs stored as a block unit administrative division.Two methods caused the dealing for edge matching for some topographic features just as residential areas,roads,water systems and pipelines after storage the digital map data.For the problem of large amount digital topographic map automatic edge matching,a method of the mapsheet boundary buffer is analyzed and the constraints of feature attributes matching are proposed,which is simple,intelligent and accurate,and greatly improved the efficiency and the accuracy of edge matching.It has achieved a good results when put into the practice.
出处
《现代测绘》
2017年第4期38-41,共4页
Modern Surveying and Mapping
基金
国家自然科学基金项目资助(41601449)
关键词
数字地形图
属性匹配
图幅接边
缓冲区
digital topographic map
attribute matching
edge matching
buffer
