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《Science of Surveying and Mapping》 2010-01
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Research of GIS data exchange method based on JSON

HAN Min,FENG Hao(School of Electronic and Information Engineering,Dalian University of Technology,Dalian 116023,China)  
Extensible MarkupLanguage(XML) of GIS data exist large amount of data redundancy.The traditional XML data compression method has a low universal application,and it is hard to be used in the application of WebGIS and other issues.This paper presents a geographical-based JSON new method for the exchange of information and data.Comparing with the traditional structure of the XML-based geographic data,the structure based on JSON is more streamlined,and can be used directly by the client,with the universal application of high and practical value.With the advantage of JSON that the data is expressed by a collection of name/value pairs,this method decomposed and analyzed basic structure of XML data,and makes the conversion rules of XML format and JSON format.Simulation test shows that JSON data format can improve GIS data exchange efficiency.
【Fund】: 国家自然科学基金资助课题(60674073);; 国家重点基础研究发展计划(973)项目(2006CB403405);; 国家科技支撑计划资助项目(2006BAB14B05)
【CateGory Index】: P208
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