摘要
交通网络的表达在GIS-T中处于非常重要的地位,不仅交通设施管理、道路交通信息管理需要良好的数据结构,而且在交通运输规划、路网规划等方面还需要拓展传统GIS的数据结构。数据是GIS系统的基础,数据模型则用来表达数据之间的联系与逻辑组织形式。由于交通信息种类繁多,具有自身的特点,需要合理的形式进行组织,因此研究GIS-T数据模型具有重要的意义。以动态分段技术为基础,提出面向对象的时空数据模型。
The expression of transport network is very important in GIS- T. Not only the traffic facilities management and road traffic information management need a good data structure, moreover developing traditional GIS data construction is needed in transport planning and network planning. Data is a base of GIS, and data model is used to express the relation between the data and the forms of logic organizations. Because of a great variety of transportation information of their own characteristics,the data need to be organized by a logical form. It has a great significance of studying the data model of GIS - T. This article discusses a object - oriented spatio - temporal data model based on dynamic segmentation.
出处
《现代电子技术》
2009年第3期183-185,共3页
Modern Electronics Technique
