面向共享的线状地图符号编码研究

Study on the Sharing- oriented Unified Encoding of Line Map Symbol

地图符号数据的开放模型和统一描述编码是地图符号共享的重要基础。本文针对线状地图符号共享与互操作研究滞后这一现状，在分析国内外GIS软件的线状符号编辑模块基础上，设计了线状地图符号的开放数据模型，提出了线状地图符号的统一编码描述准则，建立了基于Xml—Schema的线状地图符号的统一编码，并进行了基于该编码的线状地图符号共享实验，验证了遵循统一的编码规范，有利于实现线状地图符号的共享与互操作。

Open data model and unified encoding of map symbol is the important foundation of map symbol sharing. However, current research on sharing and interoperating of line map symbol is lagging behind. In order to deal with this problem, the symbol editor modules of GIS software at home and abroad are analyzed and the open data model of line map symbol is designed. Then, the encoding principle of line map symbol is proposed and the specification for unified encoding is established based on Xml- Schema. Finally, the line map symbol sharing experiment based on the unified encoding is carried out to prove that it is useful for line map symbol sharing by following the unified encoding specification.