Pure frontend WebGIS workstation for Chinese geocoding, POI extraction, area polygon query, and coordinate transform (GCJ-02/BD-09 ⇄ WGS-84). No backend required.
react typescript geocoding openstreetmap leaflet gis china poi spatial-data amap wgs84 webgis gcj-02 coordinate-transform baidu-maps
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Updated
Mar 30, 2026 - TypeScript