GCJ-02 Explained: The Chinese Coordinate System—For Developersby@nomadrat
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GCJ-02 Explained: The Chinese Coordinate System—For Developers

by Dmitry4mFebruary 18th, 2020
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Chinese regulators require approved map services to use standard GCJ-02 (Chinese:  Chinese: 国测局; pinyin: guó-cè-jú) Baidu went further and implemented yet another abstraction adding further obfuscation to the standard. For China users in China you must use GCJ02, for example. There is no official API to convert to WGS-84 as required by the Chinese law. It is illegal to publish a formal conversion guide for each use of this algorithm in different languages.

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