摘要
针对目前地理信息系统(GIS)软件中对气象符号支持的不足,通过对气象领域中所涉及的符号进行特征分析及其逻辑分类,构建了对应的几何空间数据模型,并采用不同的"样式"表征具体的气象符号,以"几何对象+样式"的形式完成气象符号对象的构建。在此基础上,基于GDI+实现各种气象符号的矢量绘制,并封装形成可供直接调用气象矢量符号绘制库,为基于GIS的气象数据信息的表达和分析提供支撑。最后实例验证了本气象符号绘制库的正确性与实用性。
Geographic information system（GIS） can’t deal with meteorological data directly due to the shortage of necessary meteorological symbol library currently. Therefore, this article analyzes the characteristics of commonly used meteorological symbols and logically classifies the symbols into three types（symbol based on point, symbol based on line, symbol based on area） considering the professional criterion as well as the meteorological application. Then the corresponding spatial geometry models and symbol styles are also constructed to build the meteorological symbol library in the form of the ＂geometry＋style＂. All the meteorological symbols in the library are drawn successfully based on GDI＋, and packaged as drawing library for GIS usage. The meteorological symbol library constructed in this paper provides support for the presentation and analysis of the meteorological information based on GIS.
出处
《图学学报》
CSCD
北大核心
2016年第5期592-597,共6页
Journal of Graphics
基金
国家自然科学基金项目(40901244)
关键词
气象符号
符号库
地理信息系统
可视化
meteorological symbol
symbol library
geographic information system
visualization
