alt Hacker NewsThanks! Currently, MBCompass can show both magnetic north using Android’s sensor fusion and true north (based on WGS84 geodetic coordinates).
Adding a magnetic compensation map sounds like a great fit for improving global accuracy without changing the app’s core goals. Thanks for the suggestion.
YW, there are some pretty compact representations possible of that data but it will come at a considerable expense in computational overhead.
https://www.ncei.noaa.gov/products/earth-magnetic-model-anom...
Is a good starting point.