GIS-T中电子地图海量数据组织研究  

Massive Data Organization of Digital Map in GIS-T

作　　者：徐丽君[1] 

机构地区：[1]武汉理工大学计算机科学与技术学院,武汉430070

出　　处：《计算机与数字工程》2009年第5期147-149,170,共4页Computer & Digital Engineering

摘　　要：交通地理信息系统(Geographic Information System for Transportation,GIS-T)对解决我国城市建设的不断发展,城市规模越来越大,使得城市交通系统压力越来越大等这些问题大有帮助,相应的提高交通运输行业的效率,带来巨大的经济效益。其中,数据组织是GIS-T研究的核心内容,将探讨电子地图显示中一种多级比例尺地图数据的构建方式,并设计了一种高效的数据组织结构,实现全国海量地图数据的多级缩放和地图操作的快速响应,提高了访问数据和显示数据的速度。With the development of our country, the size of cities is becoming bigger and bigger, which give increasing pressure to city traffic system. The advent of Geographic Information System for Transportation （GIS-T）goes far to- wards solving these problems. Moreover, it can increase efficiency of urban transportation and bring enormous economic profits. However, the data organization is the core content of GIS-T. A method is describeded to construct and display digital map using multi-levels data. Corresponding to this strategy, a kind of data organization structure is designed, to manage spatial data in layer and grid. The map output of experiment module shows that this method does well in multi-lev- els zoom and increasing the responding of map data in countrywide scope.

关 键 词：GIS-T 电子地图 空间数据组织 

分 类 号：TP311.12[自动化与计算机技术—计算机软件与理论]