CODEWITHSUNDEEP
iosobjective-ccllocation
iYoung
iYoung

Reputation: 3622

CLLocation discrepancy between distances in app & google maps

I am fetching distance between 2 locations:

  1. From Google Maps: Distance = 1.5 KM (Approx) (Correct)
  2. From App using CLLocation: Distance = 0.83 KM (Approx) (Not Correct)

Location coordinates are:

Current Location: 19.0174941,72.8557548 Destination Location: 19.0205907,72.8540556

Below is the code which I am using to calculate the distance:

CLLocation *destination = [[CLLocation alloc] initWithLatitude:[latitude doubleValue]  longitude:[longitude doubleValue]];
CLLocationDistance distance = [destination distanceFromLocation:currentLocation]/1000.0;

I am not able to understand why there is such a difference in both approaches. Can anyone guide me how can I get same distance from both ways.

Upvotes: 0

Views: 157

Answers (1)

Bhumit Mehta
Bhumit Mehta

Reputation: 16318

Google map with Google SDK gives you actual road distance, while CLLocation gives you distance between 2 co-ordinates considering it a straight line. So there this this difference.

Please check apple docs here.

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.

Upvotes: 0

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