智能移动端等值线实时绘制技术及其应用

摘要

Using the C # program language and WebService interface,a real-time contour technology solution is developed for smart mobile devices.This solution changes meteorological grid data into contour data by the contour algorithm.Contour data are converted into binary data which is encoded and compressed through coding and compression techniques.The binary contour data is downloaded into the mobile devices by the WebService interface,and by using of WebGIS API functions and mobile terminals,the contours and choroplethic map are drawn in real time and displayed on screen as the vector layer.The application results show that the solution can avoid image fuzzy and image distortion and display more detailed and accurate and clear meteorological information,comparing to displaying a picture on screen.%利用C#开发语言结合WebService,提供了一套智能移动端的等值线实时绘制技术方案.方案采用了等值线算法实时分析气象网格数据,通过二进制编码压缩技术对等值线分析结果进行编码压缩,生成二进制等值线数据.移动端通过调用WebService接口实时下载解析二进制等值线数据,结合WebGIS的API函数实时绘制等值线色斑图.应用结果表明,所讨论的方案避免了传统图片显示方式带来的图片模糊不清、失真等问题,更加精细的展示气象要素数值.