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I am new to Objective-C, but have written a test app that shows me basic CLLocationManager info such as Heading, Course, Distance, Speed, Latitude and Longitude and the GPS data timeStamp info. What I need is the corresponding UTM coordinates for a given NAD83 and/or WGS84 projection including the UTM Zone letter and numeric designator (e.g. 16-T) wherer I live in northern Indiana. So, if I have : LAT: 40.410250 LON: -86.127550

I need to convert or obtain through some (hopefully) existing method the UTM Zone, Easting and Northing coordinates of a given LAT/LON coordinate.

Any help is appreciated.

Thanks... Tim

user3658023
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  • possible duplicate of [iOS: How to convert MKMapPoint or CLLocationCoordinate2D to UTM?](http://stackoverflow.com/questions/4219775/ios-how-to-convert-mkmappoint-or-cllocationcoordinate2d-to-utm) Specifically, check out the link to the JS page in the answer and look at their source code, which you could convert to obj-c, or one answer claims to have created a solution and posted to Github. – Stonz2 Jul 08 '14 at 21:28
  • OK. I will check it out. I know in my Windows programming, I ended up purchasing a 3d party DLL to do this for me. Don't think they have a Mac OSX versioj of it however. Thanks – user3658023 Jul 10 '14 at 19:26
  • I haven't tested the solution that one of the answers says he put on GitHub, but it might be a good 3rd party library for iOS that could work for you. – Stonz2 Jul 10 '14 at 19:28

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