摘要
根据T-GIS空间数据的要求,采用非平面数据模型来表达交通路网模型。为保证路网空间数据的现势性,根据路网的组成要素以及要素之间的逻辑关系,确立了路网数据的更新方案及流程,分别对空间数据和非空间数据提出了不同的更新方式。并设计了数据库更新软件,该软件以某城市路网为例,验证了路网更新方案的可靠性和高效性。
Non-planar data model is applied to urban road network,which can meet the requirements of T-GIS spatial data.Various elements of the road network are described.Based on their logical relationship,different methods to update spatial data and non-spatial data are designed to keep the T-GIS spatial database in real-time.Due to the flow of road network renewal method,the software is programmed to automatically update the database.As a certain city＇s road network for experiment,the reliability and efficiency of the method of the road network renewal is verified.
出处
《交通信息与安全》
2010年第4期39-42,48,共5页
Journal of Transport Information and Safety
关键词
T-GIS
路网模型
路网更新
T-GIS
road network model
road network updating
