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GCJ-02

GCJ-02 and BD-09 are map obfuscation algorithms used in China; obfuscation is mandatory for all domestic online maps.

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zhyt1985 / gcoord_skill

A Claude Code skill for converting geographic coordinates between Chinese map coordinate systems (WGS84/GCJ02/BD09/BD09MC/WebMercator)

skills skill wgs84 bd09 gcj02 cli-tool claude-code coordinate-system chinese-maps

Updated Feb 18, 2026
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Website: github.com/topics/gcj02
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