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Quantify The Graphical Data And The Web Service

Posted on:2007-12-11Degree:MasterType:Thesis
Country:ChinaCandidate:J ZhiFull Text:PDF
GTID:2190360182999576Subject:Cartography and Geographic Information System
Abstract/Summary:PDF Full Text Request
In the visualization of geosciences statistical information, at present , there are many difficulties to lay out the geosciences data which have great information, multi-guideline and measure units, and this problem put the contrast and analysis at a disadvantage. No doubt the introduce of the quantitative graphic patterns can be one of the way to solve it . The quantitative graphic patterns are based on seven kinds of coordinates , such as oblique coordinates system , circuit angle coordinate system ,zero-angle reference frame and the perspective reference frame.With the development of computer and internet technology, web service's development has reached a speed which has never reached before .Web services turn the internet into the flat roof of service transmission, not only the flat roof of data transmission .In virtue of the advantage of internet,the web service system of quantitative graphic patterns is bound to show its superiorities in displaying geosciences data.Therefore, it can offer the visualization service to diverse vacations. Services on line make the data sharing to be prevalent day by day, and the problem to protect the construction of the unit of resources on line is standing out. There must be some more systematical and harmonious methods to organize and develop the data source on line. Metadata is data about data, which describes the content, quality, spatial reference system , management and other characteristics of data set. It is the key to solve above problems and is considered as the core technology for data sharing and information service.In this paper, according to the probing into the mathematic basis and content graph and the anatomy of the structure of the graphs, the quantitative graphic patterns of so many kinds are classified and encoded. The quantitative graphic information has been classified into mathematic basis information and content graph information. The Web Service of Quantitative Graphic Patterns Metadata Standard has been established according to the researching of metadata service under information sharing network environment and the system of the quantitative graphic information. The coordinate andgraph metadata have been detailed. The coordinate metadata gives description in four aspects: title, identification , description information and organization information. The content graph metadata gives description in three aspects: title, organization information and geometric reference.- At last, the structure of the quantitative graphic patterns Web service system has been introduced, the function and service of metadata to the system have been detailed. The author designs the management of the metadata and lay out the search system of metadata.
Keywords/Search Tags:Quantitative graphic patterns, Metadata, Metadata service, classify and encode
PDF Full Text Request
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