Research on GIS command message in synchronous cooperative GIS

doi:10.3778/j.issn.1002-8331.2009.27.001

Computer Engineering and Applications ›› 2009, Vol. 45 ›› Issue (27): 1-3.DOI: 10.3778/j.issn.1002-8331.2009.27.001

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Research on GIS command message in synchronous cooperative GIS

SUN Ya-qin¹，LV Guo-nian²，ZHOU Liang-chen²

1.Jiangsu Key Lab of Resources and Environmental Information Engineering，China University of Mining and Technology，Xuzhou，Jiangsu 221008，China
2.Key Lab of Virtual Geographic Environment，MOE，Nanjing Normal University，Nanjing 210046，China

Received:2009-06-15 Revised:2009-07-24 Online:2009-09-21 Published:2009-09-21
Contact: SUN Ya-qin

GIS命令消息在实时协同GIS系统中的应用研究

孙亚琴¹，闾国年²，周良辰²

1.中国矿业大学江苏省资源环境信息工程重点实验室，江苏徐州 221008
2.南京师范大学虚拟地理环境教育部重点实验室，南京 210046

通讯作者: 孙亚琴

Abstract

Abstract: In order to reduce the burden of network transmission，for the characteristics of massive geospatial data，through abstracting the collaborators’ GIS operations and encapsulating them into GIS command message，a message-based synchronous cooperative GIS is presented.Firstly，the system’s implementation mechanism is analyzed，and then the architecture of the system is brought forward.Considering GIS operations are complicated and multifarious，GIS operations’ division size and the GIS command message’s encoding specification based on XML are discussed intensively.Finally，the storage of GIS command message is introduced.

Key words: Geographic Information System（GIS） command message, cooperative GIS, message passing, Extensible Markup Language（XML）

摘要： 为了有效降低网络传输量以满足GIS实时协作的要求，针对地理空间数据量大的特点，通过对协作者的GIS操作进行抽象与封装，提出利用消息传递机制构建实时协同GIS系统的解决方案。首先分析了基于消息传递的实时协同GIS的实现机制，给出了系统体系结构；重点讨论了GIS操作的划分粒度与基于XML的GIS命令消息的编码规范；最后对GIS命令消息库进行了介绍。

关键词: 地理信息系统命令消息, 协同地理信息系统, 消息传递, 可扩展标记语言

CLC Number:

P208

SUN Ya-qin¹，LV Guo-nian²，ZHOU Liang-chen². Research on GIS command message in synchronous cooperative GIS[J]. Computer Engineering and Applications, 2009, 45(27): 1-3.

孙亚琴¹，闾国年²，周良辰². GIS命令消息在实时协同GIS系统中的应用研究[J]. 计算机工程与应用, 2009, 45(27): 1-3.

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Research on GIS command message in synchronous cooperative GIS

GIS命令消息在实时协同GIS系统中的应用研究

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