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时空技术随着GIS在公路网规划信息系统的深入应用 ,已引起越来越多的研究人员的重视。目前 ,GIS在处理涉及与时间有关的交通信息时存在一定的缺陷 ,因此 ,如何在GIS环境下 ,利用历年交通信息为公路网规划提供有力支持 ,是公路网规划信息系统必须解决的问题。本文系统地提出符合公路网规划信息系统的时空技术的实体结构设计和数据结构设计 ,并运用GIS中“层”的概念成功地解决了公路网规划信息系统的时空问题
Space-time technology With the in-depth application of GIS in the highway network planning information system, more and more researchers have attracted the attention. At present, GIS has some shortcomings when it comes to dealing with time-related traffic information. Therefore, how to use the historical traffic information to provide strong support for highway network planning in GIS environment is an issue that must be solved in the information planning of highway network planning. This paper systematically put forward the physical structure design and data structure design of the space-time technology conforming to the highway network planning information system, and successfully solved the space-time problem of the highway network planning information system by using the concept of “layer” in the GIS