基于谷歌地球的污区图动态可视化修订工具

Visual Dynamic Reversion Tool for Pollution Distribution Map Based on Google Earth

针对污区图中不同等级图形相互嵌套而导致绘制困难的问题,以谷歌地球的三维可视化场景为基础,采用面向服务架构,设计和开发了污区图的可视化动态修订工具,可实现污区图的动态修订、多边形内嵌图形与边界处理,以及污区图的合并、汇总和对比分析等。在广东电网2008年、2010年和2012年版污区图绘制工程中采用该修订工具,应用效果表明该工具直观、操作简单,可提高污区图绘制效率和准确率。

In allusion to difficulties in drawing diagrams of different levels of pollution distribution map for reason of interac-tive nesting,this paper introduces design and development of visual dynamic reversion tool for pollution distribution map by using service-oriented architecture based on 3D visualization scene of Google earth which is able to realize dynamic rever-sion,processing of embedded diagrams and boundaries of polygons of the pollution distribution map as well as merging,col-lecting and comparative analysis on the pollution distribution map. This reversion tool was used in drawing the 2008 version, 2010 version and the 2012 version pollution distribution maps of Guangdong power grid and the application effects indicats that this tool is intuitive and simple for operating which could improve efficiency and accuracy of drawing pollution distribu-tion map.