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Map display offset in China #141

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twisteroidambassador opened this issue Mar 17, 2022 · 0 comments
Open

Map display offset in China #141

twisteroidambassador opened this issue Mar 17, 2022 · 0 comments

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@twisteroidambassador
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I have noticed that in recent versions of Arc Mini, the waypoints and tracks displayed in map view are offset from their actual locations. (I believe earlier versions do not have this problem, but not certain.)

I assume this is because the app switched from OpenStreetMaps to Apple Maps for the map display, and I assume the offset is because the app records location data in WGS-84 while Apple Maps China is in some China-specific coordinates, possibly GCJ-02.

Here's some discussion for another project facing most likely the same problem: merlos/iOS-Open-GPX-Tracker#192

Maybe Arc Mini can add an option to choose between Apple Maps and OpenStreetMaps?

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