How to compute direction between 2 locations

Question

Simmilar with Direction between 2 Latitude/Longitude points in C#

but with objective-c

Also I want a formula that works for large distance near the pole if it's possible.

score 2 · Answer 1 · answered Jan 06 '12 at 08:15

2

You'll need the following complete but rather difficult stuff. A slightly easier description is found on wikipedia.

answered Jan 06 '12 at 08:15

ILa

49
3

Good answer (and good question). I voted up. Some jerks vote us down. – user4951 Jan 09 '12 at 11:43

score 1 · Accepted Answer · answered May 10 '12 at 06:33

Or you could save yourself a lot of time and use CLLocation's distanceFromLocation method:

distanceFromLocation:

Returns the distance (in meters) from the receiver’s location to the specified location.

Discussion This method measures the distance between the two locations by tracing a line between them that follows the curvature of the Earth. The resulting arc is a smooth curve and does not take into account specific altitude changes between the two locations.

http://developer.apple.com/library/ios/DOCUMENTATION/CoreLocation/Reference/CLLocation_Class/CLLocation/CLLocation.html#//apple_ref/occ/instm/CLLocation/distanceFromLocation:

How to compute direction between 2 locations

2 Answers2