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《Engineering of Surveying and Mapping》 2012-02
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Spatial coordinate transformation based on Proj.4

GE Sen1,XIONG Wei1,LIU Jian-zhong1,YANG Bin2(1.Institute of Surveying and Mapping,Information Engineering University,Zhengzhou 450052,China;2.69027 Troups,Urumchi 830002,China)  
With GIS blended with the IT mainstream,various open GIS software has brought up.As a cross-platform map projection library of open GIS,Proj.4 has been used by many open GIS software and gained increasing emphasis.The paper firstly brings a brief introduction,including the flow chart of coordinate transformation based on Proj.4,various coordinate definitions,parameter formats and so on.Finally,we explicate and realize the spatial coordinate transformation in common use in detail,according to the flow,taking coordinate systems of our country in different periods for example.
【CateGory Index】: P226.3
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