基于Silverlight的WebGIS客户端技术与应用试验
WebGIS Client Based upon Silverlight
查看参考文献15篇
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文摘
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RIA(丰富型互联网应用程序)技术越来越多的应用于WebGIS,满足了人们对高交互性和丰富表现力的需求,现存的WebGIS客户端解决方案主要是Ajax和Flex,其中Ajax交互能力和表现力不够强大,而对Flex的研究多集中在体系结构、功能模块上.本文在对Silverlight分析的基础上,提出将Silverlight应用在WebGIS客户端的技术可行性,特别是研究了利用Silverlight技术来表达地理空间信息的方式,分析了如何在Silverligt中模拟和改进DeepZoom技术,进行地理空间信息的多尺度高细节展现,运用XAML(可扩展应用程序标记语言)、动画技术等,实现地理信息的矢量栅格一体化表达等功能,并集成视频、图片等多媒体信息,提高了地理空间信息的表现力.同时,对进行大数量表达的算法设计和实现处理等性能提升方面也做了研究.最后,由试验验证了在WebGIS客户端应用Silverlight技术的可行性与性能上的优越性. |
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其他语种文摘
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The WebGIS development represents a natural answer to the growing requests for dissemination and use of geographical information data. WebGIS originates from a combination of web technology and Geographic Informa-tion System. The new technology, RIA (Rich Intemet Application), is more frequently used to enrich WebGIS in meeting the demand of high interactivity and rich expression in some extent. There were papers introducing the so-lution of RIA applied in WebGIS such as Flex,but they mainly discussed the architecture, the function model and so on. Base on the research of Silverlight, the combination between Silvedight and WebGIS is presented in this pa-per. Especially, the authors discussed how to represent geographic information in multi-scale by simulating and im-proving DeepZoom, which enables smooth loading and panning by serving up multi-resolution images and using spring animation. And then we integrated vector and raster geographical data by making use of XAML (eXtensible Application Markup Language). It would be much more appealing if taking advantage of animation. The algorithm for displaying huge amount of data was also designed, and it improved the performance efficiently. In addition, the key issue of geospatial web services aggregation and web cache was also mentioned. Finally, to evaluate and present results obtained by this work, this paper includes case studies concerning implementation of the idea. The authors believe that WebGIS based upon Silvedight will play a great role in representing geographic information and aggre-gating geospatial web services in future, and also ,it is more effective. |
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来源
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地球信息科学学报
,2010,12(1):69-75 【扩展库】
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关键词
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Silverlight
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RIA
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WebGIS
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地址
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中国科学院地理科学与资源研究所, 北京, 100101
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1560-8999 |
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学科
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地球物理学 |
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基金
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国家863计划
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国家863计划
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文献收藏号
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CSCD:3841739
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参考文献 共
15
共1页
|
|
1.
Preciado J C. Necessity of Methodologies to Model Rich Intemet Applications.
Web Site Evolution,(WSE 2005):Seventh IEEE International Symposium on,2005
|
被引
1
次
|
|
|
|
|
2.
吴涛. WebGIS开发中的RIA技术应用研究.
测绘通报,2006(6):34-37
|
被引
12
次
|
|
|
|
|
3.
王青山. 基于RIA的网络GIS的发展与应用.
测绘科学技术学报,2006,23(2)
|
被引
2
次
|
|
|
|
|
4.
张宏. 基于RIA技术的WebGIS研究.
地球信息科学,2007,9(2):37-41
|
被引
10
次
|
|
|
|
|
5.
龙明. 基于RIA的网络地理信息系统的设计与实现.
海洋测绘,2006,26(5):38-41
|
被引
3
次
|
|
|
|
|
6.
汪林林. 基于Flex的RIA WebGIS研究与实现.
计算机技术,2008,28(12):3257-3260
|
被引
1
次
|
|
|
|
|
7.
石岚岚. 基于Flex和_NET的WebGIS的设计与实现.
微计算机信息,2008,24(11):233-234
|
被引
2
次
|
|
|
|
|
8.
Macdonald.
Pro Silverlight 2 in C# 2008,2008
|
被引
1
次
|
|
|
|
|
9.
Sayar A. Integrating AJAX Approach into GIS Visualization Web Services:Telecommunications.
2006.AICT-ICIW' 06.International Conference on Internet and Web Applications and Services,2006
|
被引
1
次
|
|
|
|
|
10.
吴运超. Ajax在WebGIS中的应用.
地理与地理信息科学,2007,23(2):44-46
|
被引
1
次
|
|
|
|
|
11.
Ceecon A.
Integration of Cartographic Generalization and Multi-Scale Database for Enhanced Web Mapping,2003
|
被引
1
次
|
|
|
|
|
12.
Longley P.
Geographic Information Systems and Science,2005
|
被引
4
次
|
|
|
|
|
13.
龚健雅. 从平台GIS到跨平台互操作GIS的发展.
武汉大学学报（信息科学版）,2004,29(11):985-989
|
被引
10
次
|
|
|
|
|
14.
.
OGC (Open Geospatial Consortium) official web site
|
被引
1
次
|
|
|
|
|
15.
Chang Y. XML Web Scrvice-based Development Model for Intemet GIS Applications.
International Journal of Geographical Information Science,2006,20(4):371-399
|
被引
1
次
|
|
|
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