CODEWITHSUNDEEP
iphoneformulahaversine
Pugalmuni
Pugalmuni

Reputation: 9390

How to calculate the distance between two places using Haversine Formula in iPhone?

I want to calculate the distance between two places using Haversine formula. Actually i am having the latitude and longitude values of two places. Now i want to calculate the distance between that places using Haversine formula.

For Eg:

 First Place: 
           "lat" :  12.97159870,
           "lng" : -77.59456270

Second Place:
           "lat" :  9.915996999999999,
           "lng" : -78.1218470
        },

Now i want to calculate the distance using Haversine Formula.

Please help me out. Thanks!

Upvotes: 0

Views: 2691

Answers (3)

Sandeep Kumar Gupta
Sandeep Kumar Gupta

Reputation: 129

// Copy library to your project https://github.com/heycarsten/haversine-objc. Then you get distance between two location by using

    Haversine *hvs = [[Haversine alloc]initWithLat1:Lati1 lon1:Longi1 lat2:Lati2 lon2:Longi2];

// Getting Distance using Math Formula..

    double dLat1InRad = DEGREES_TO_RADIANS(Lati1);
    double dLong1InRad = DEGREES_TO_RADIANS(Longi1);
    double dLat2InRad = DEGREES_TO_RADIANS(Lati2);
    double dLong2InRad = DEGREES_TO_RADIANS(Longi2);
    double dLongitude = dLong2InRad - dLong1InRad;
    double dLatitude = dLat2InRad - dLat1InRad;
    double a = pow(sin(dLatitude/2.0), 2)+ cos(dLat1InRad) * cos(dLat2InRad) * pow(sin(dLongitude / 2.0), 2);
    double c = 2.0 * asin(sqrt(a));
    const double kEarthRadiusKms = 6376.5;
    double dDistance = kEarthRadiusKms * c;

Upvotes: 1

danielemm
danielemm

Reputation: 1696

You can use CLLocation class (CoreLocation.framework) method's distanceFromLocation:(CLLocation*)loc;

CLLocation *locA = [[CLLocation alloc] initWithLatitude:lat1 longitude:long1];
CLLocation *locB = [[CLLocation alloc] initWithLatitude:lat2 longitude:long2];
CLLocationDistance distance = [locA distanceFromLocation:locB];
[locA release]; [locB release];

Upvotes: 12

Vladimir
Vladimir

Reputation: 170859

iOS provides standard means to calculate the distance between 2 geographic locations - you need to use CLLocation class for that:

#import <CoreLocation/CoreLocation.h>

CLLocation *loc1 = [[[CLLocation alloc] initWithLatitude:12.97159870 longitude:-77.59456270] autorelease];

CLLocation *loc2 = [[[CLLocation alloc] initWithLatitude: 9.915996 longitude:-78.1218470] autorelease];

double distance = [loc1 distanceFromLocation: loc2];

You'll also need to add CoreLocation.framework to link with your project.

Upvotes: 6

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