摘要
自从W3C推出SVG网络图形发布标准以来,因其图形任意缩放性、所占存储空间与图形大小无关性、易于互操作性等优点而得到了广泛应用。文中分析了SVG和Ajax技术的特点,提出了基于SVG的网络GIS编辑系统的体系结构,设计了存储SVG的关系数据库表结构,实现了在线编辑的图形创建、删除、保存、缩放、标注、修改和图层控制等功能。以广东省空间信息共享服务平台项目为实验载体,实现了地理数据在线编辑的各种功能,具有响应速度快、易操作等特点。
Since W3C developed SVG, it is applied widely because of its graphic scalable, small size of storage, interaetivity and so on. Analyzed the characteristics of SVG and Ajax technology; proposed an architecture of the vector graphics editing system; designed the relation database tables to store SVG documents; implemented lots of functions such of graphic creating, deleting, saving, scaling, modifying and layer controlling. At last, carried out various functions of geography data online editing on the project of Guangdong spatial inforrnation sharing.
出处
《计算机技术与发展》
2009年第4期213-216,共4页
Computer Technology and Development
基金
广东省百项工程项目(2005B30801006)
