cllocationdistance

I'm finishing an App in wish i need to show the user the distance between him and about 500 coordinates. using the CLLocation method to calculate it, works well, but it takes about 1 minute in iPhone 4 to finish calculations for each location. What is the best way to do it? Using span? Any other faster way? Thanks all, rui I think Sahgal is right, here is some code, perhaps it will help you. +(CGFloat)calculateDistanceBetweenSource:(CLLocationCoordinate2D)firstCoords andDestination:(CLLocationCoordinate2D)secondCoords { // this radius is in KM => if miles are needed it is calculated during

Prior to iOS 4.0, CoreLocation was reporting altitude correctly, now it always reports as 0 ft. -(void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation*)newLocation fromLocation:(CLLocation *)oldLocation { NSString *tLatitude = [NSString stringWithFormat:@"%3.5f", newLocation.coordinate.latitude]; NSString *tLongitude = [NSString stringWithFormat:@"%3.5f", newLocation.coordinate.longitude]; /* the following returns 0 */ NSString *tAltitude = [NSString stringWithFormat:@"%i", newLocation.altitude]; /* theres more code, but it's not relevant, and this worked prior to

I'm looking for an open source app or library to track user location in the background. Now I'm trying to do it with CLLocation and background tasks, but accuracy is not enough for my case. Could you explain, how apps, like "moves", "runkeeper", "endmondo", creates my route? Should I use Accelerometer or/and compass to create a route between CLLocation background points? Some code: //location manager init self.locationManager = [[CLLocationManager alloc] init]; self.locationManager.distanceFilter = kCLDistanceFilterNone; self.locationManager.desiredAccuracy = kCLLocationAccuracyBest; self

I want to make it so that it will show the amount of distance between two CLLocation coordinates. Is there someway to do this without a complex math formula? If there isn't how would you do it with a formula? Glenn Howes CLLocation has a distanceFromLocation method so given two CLLocations: CLLocationDistance distanceInMeters = [location1 distanceFromLocation:location2]; or in Swift 4: //: Playground - noun: a place where people can play import CoreLocation let coordinate₀ = CLLocation(latitude: 5.0, longitude: 5.0) let coordinate₁ = CLLocation(latitude: 5.0, longitude: 3.0) let

I want to find nearest users to my location. (For example up to 5km) My nodes in firebase database like below structure, + users + user_id0 - latitude: _ - longitude: _ Is there any way getting exact users in that radius. Otherwise I should check each user of them nearest position or not to me using CLLocation distance method. I'd highly recommend using Geofire for something like this. To set it up, your data structure will slightly change. You can still store lat/lng on your users, but you will also create a new Firebase table called something like users_locations Your users_locations table