#2780: mobile, queries, china
, last check: Mon, 27 Apr 2026. Post history
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mobile
Trackbook allows the online creation of tracks and waypoints, which can be saved in the account and synchronized from the cloud with an app for viewing and tracking GPX files for both Android and iOS
https://trackbook.com/?lat=25.165173&lng=-27.246094&z=3.00&basemap=7 -
queries
How to bulk query and subquery OpenStreetMap with the Overpass API and from Python for large amounts of geodata
https://pybit.es/articles/openstreetmaps-overpass-api-and-python/ -
china
The datum China uses is GCJ-02, which applies a random obfuscation "non-linear topographic map confidentiality algorithm" so that only government-authorized companies can map the country
https://medium.com/@anastasia.bizyayeva/every-map-of-china-is-wrong-bc2bce145db2
Raf