大比例尺数字化地形图缩编技术探讨  

The Micro-editing Technical of Large Scale Digital Topography

作　　者：诸敏秋[1] 

机构地区：[1]南京市测绘勘察研究院,南京210005

出　　处：《江苏测绘》2000年第2期38-41,共4页Jiangsu Surveying and Mapping

摘　　要：数字化地形图的自动缩编一直是测绘行业的一大难题。在测绘行业,全要素地形图的数字化工作开展得较早,其数据结构较简单,本文以上海市1:500数字化地形图缩编1:2000地形图为例,利用AutoCAD的二次开发语言,对其数据结构中的一些特殊性加以判断及识别,编制了一套可半自动缩编的程序,大大提高了缩编效率,同时也为其以后向GIS数据格式转换迈进了一大步。The auto micro-editing of digital topography is a difficult problem for the surveying and mapping firm, the digitizing of full-factor topography is developed early, its data structure is simple. Being a example, the digital topography in scale 1:500 of ShangHai city is micro-edited to the digital topography in scale 1:2000. through judging some particularity of its data structure, a set of semi-auto editing program is made with the redeveloping language of AutoCAD , which can raise micro-editing efficiency and is helpful to transform to GIS data type.

关 键 词：地图缩编 大比例尺 数字化 地形图 

分 类 号：P284[天文地球—地图制图学与地理信息工程]