摘要
回顾了两种类型的时空数据模型,发展了面向对象的规划道路中线时空数据模型,进一步实现了对规划道路中线对象的查询及更新维护。该模型具有充分利用G IS已有的空间分析和方便实现时态分析的功能,同时也具有数据维护和历史数据恢复方便简单,空间信息没有冗余,时态信息冗余小,且能表达变化原因等特点。
This paper has reviewed two kinds of spafio -temporal data models, namely, space based and time based ones. The authors developed an object -oriented spatio -temporal data model for planning road centerlines, and realized querying and updating of objects in the planning of road centerline. This model can make use of existent GIS functions on spatial analysis and extend functions of temporal analysis. It can preserve data and restore historical data conveniently. There exists no redundant spatial information and very little redundant temporal information. The variation reason can also be expressed with the model.
出处
《国土资源遥感》
CSCD
2006年第4期68-72,共5页
Remote Sensing for Land & Resources
基金
武汉大学地理信息系统重点实验室开放研究基金项目(编号:WD200602)
关键词
地理信息系统
时空数据模型
面向对象
Geographical Information System
Spatio -temporal data model
Object -oriented
