点状地图符号统一编码的研究

Study on the Unified Encoding of Point 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,针对点状地图符号共享与操作研究滞后这一现状,在分析国内外GIS软件的点状符号编辑模块基础上,设计了点状地图符号的开放数据模型,提出了点状地图符号的统一编码描述准则,建立了基于Xml-Schema的点状地图符号的统一编码规范,最后进行了基于该编码规范的点状地图符号共享实验,验证了遵循统一的编码规范,有利于实现点状地图符号的共享与互操作。

The open data model and unified encoding of map symbol is the most important key to share map symbol. However, current research is weak in sharing and integrating point map symbol. In order to deal with this problem, the symbol editor module of current GIS software is analyzed and the open data model of point map symbol is designed. Then, the encoding principle of point map symbol is proposed and unified encoding specification is built based on xml- schema. Finally, an experiment of sharing point map symbol based on unified encoding is built to test that it is useful for sharing point map symbol by following the unified encoding specification.