基于GIS的统计时空数据组织和查询研究

Research on Organization and Query of Statistical Spatiotemporal Data Based on GIS

在统计地理信息系统中,统计数据的时空特征是较难解决的问题,本文研究一种能有效实现统计时空数据组织和查询的方法。首先介绍了时空数据模型的研究现状,分析了在统计地理信息系统中空间数据和属性数据的时空特征;然后在此基础上提出了一种利用面向对象的时空数据模型对统计数据组织的方法,并介绍了在数据库中的实现方法;最后分析了在统计地理信息系统中最常见的几种时空查询算法,并介绍了具体实现过程。通过程序实现证明,本文提出的方法能够较好地存储长期的统计数据并实现统计数据的快速查询、时间序列查询等时空查询问题。

The spatiotemporal characteristics of statistical data were research challenges in Statistical GIS.This paper mainly studies an effective method to implement organization and query of spatiotemporal statistical data.First,it introduces the research situation of spatiotemporal data model and analysis the spatiotemporal characteristics of statistical data.Then it proposes a data model using object-oriented method and introduces how to realize it in the database.At last,some of the most common query algorithms in the Statistical GIS are introduced.Proved by programming realization,long-term statistical data can be effectively organized and stored in the database,spatiotemporal snapshot query and sequences query can be well executed in this way.