基于制图综合的电子地图多尺度显示方法研究  

Research on the Multiscale Display Method of Electronic Map Based on Cartographic Generalization

作　　者：吴芳华[1,2] 吉国杰 

机构地区：[1]西安测绘研究所,陕西西安710054 [2]地理信息工程国家重点实验室,陕西西安710054

出　　处：《测绘科学与工程》2017年第6期59-64,共6页Geomatics Science and Engineering

基　　金：河南省科技攻关计划基金资助项目（152102210014）.

摘　　要：为有效提高电子地图信息表达和传输能力，本文研究了一种面向电子地图多尺度显示的制图综合解决方案，对电子地图多尺度显示的特点进行了概括总结，分析了面向制图生产和面向地图显示的地图制图综合的差异，构建了电子地图多尺度显示模型，提出了基于符号特征的不同要素电子地图制图综合策略。即将线状符号分解为单线、双线和线图元，将面状符号分解为轮廓线和填充等类型，确定不同类型符号对应的制图综合方法。简化了制图综合算法，降低了制图综合的实现难度，提高了电子地图多尺度显示的科学性。To improve the information expression ability and perceptibility of electronic map, a cartographic generalization solution for multi-scale display of electronic map is proposed in this paper. The characteristics of the multi-scale display electronic map are summarized, and the differences between cartographic production oriented and map display oriented map generalization are analyzed. The multi-scale display model of electronic map is built, and the cartographic generalization strategy based on sym- bolic characteristics of different features is put forward. To be specific, linear symbols are decomposed to single line, double line and line primitive, area symbols are decomposed to loop lines and filling types, and thus generalization methods can be deter- mined according to different symbol types. In this way, the cartographic generalization algorithms are simplified and become easi- er to realize, and the scientificalness of multi-scale display of electronic map is improved.

关 键 词：电子地图 多尺度显示 数据模型 制图综合 可视化 

分 类 号：P208[天文地球—地图制图学与地理信息工程]