摘要
地理国情普查生产管理系统中采用Web地图管理结合表,地图在浏览器中的显示受到浏览器和网络的限制,地图整幅显示加载速度慢,用户体验不好,利用金字塔瓦片地图技术在服务器端预先生成不同级别的瓦片,提高地图的生成、发布、显示和浏览效率,减轻了服务器负载和网络传输负担。利用四元树算法管理金字塔瓦片地图的瓦片索引,在不同缩放比例请求下,能够快速、准确地找到瓦片并显示。
Web map is used in index diagram of geomatics information data processing management system .Map displayed in a browser by browser and network limitations .The entire map which is displayed loads slowly with a bad user experience .Pyramid tile map using the technology on the server side pre -generated tiles of different levels to improve the generation of maps , publish, display and browsing efficiency , reduce server load and network traffic load .Quadtree algorithm using the management pyramid tile map tile index, at the request of a different scale to quickly and accurately locate and display tiles .
出处
《测绘与空间地理信息》
2014年第6期69-71,74,共4页
Geomatics & Spatial Information Technology
基金
黑龙江测绘地理信息局基础测绘科技项目(201301-3)资助
关键词
地理国情普查
四元树算法
数据生产
结合表
national geographic condition survey
quadtree algorithm
data processing
index diagram
