电子地图符号构成变量及其生成模式

摘要

在电子地图符号化的过程中，视觉变量是关键。通过分析视觉变量在电子地图符号设计和自动生成过程中的不足，提出符号构成变量的概念；剖析符号构成变量的表现形式，探讨基于符号构成变量的多种符号生成模式；在此基础上实现了电子地图符号生成模块，试验证明能够提高电子地图符号的科学性和美观性，且便于技术实现，为电子地图符号的设计和自动生成提供了新方法。%In the process of symbolization of electronic map, visual variable is the key. Through the analysis of shortages of visual variable in the process of electronic map symbol design and automatic generation, concept of constitution variables is brought forward. Then, representation forms of constitution variables are analyzed, and multifold symbol generation modes are discussed based on constitution variables. At last, electronic map symbol generation module is made, which proves that with this method it is easier to draw symbols by computer and the symbols are more precise and more pretty. New method is provided to the design and automatic practice of electronic map symbols.