Calculate compass heading to a CLLocation - Haversine functions for iOS

StackOverflow https://stackoverflow.com/questions/3198186

Question

I understand how to get the distance between 2 CLLocations. I need to determine the generalized compass bearing (N, NE, E etc.) from a CLLocation to another CLLocation.

Before I implement something to derive the bearing with the haversine formula is there a generally adapted open source library or code fragment that you've found solves this problem with or without using haversine?

Thanks!

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Solution

I've used some of the snippets available from Movable Type Scripts - both haversine and spherical law of cosines available. The code examples are all in JavaScript, but they translate very easily to C or Objective C.

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