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Maybe local or on a server and when querying the database use the following query which finds the closest pharmacies to your location using the harvesine formula. SELECT id, ( 3959 * acos( cos( radians(37) ) * cos( radians( lat ) ) * cos( radians( lng ) - radians(-122) ) + sin( radians(37) ) * sin( radians( lat ) ) ) ) AS distance FROM markers ...
From there, what you would want to do is find compare the users inputted location to the location of each pharmacy. Finding the smallest displacement in both the X and Y co-ordinates should get you the closest pharmacy. But since you want distance, you would want to convert the displacement value to distance by getting the absolute.
With HTML5, you can pull the location of the user and then compares this example using a Haversine function (function below taken from here): function getDistanceFromLatLonInKm(lat1,lon1,lat2,lon2) {. var R = 6371; // Radius of the earth in km. var dLat = deg2rad(lat2-lat1); // deg2rad below. var dLon = deg2rad(lon2-lon1);
@sasjaq - True, but if we're talking about lat and lng points on this planet, and the distance being considered is short between two points such that the straight distance and the distance that wraps with the curvature of the Earth has a difference of say 1%, the flat approximation is good enough to perform the query for the closest well known point to a query point.
In response, he got the following code: NSArray *locations = //your array of CLLocation objects. CLLocation *currentLocation = //current device Location. CLLocation *closestLocation; CLLocationDistance smallestDistance = DBL_MAX; // set the max value. for (CLLocation *location in locations) {. CLLocationDistance distance = [currentLocation ...
Had a look at iPhone: Sorting based on location. But it does not answer my question. I have the following array "MyStoreArray" and want to determine which site is closest to my current location and retrieve the "storenum" element for that site. And use that element to contact the site. Sample Array:
first you need to import the location class of the android sdk. import android.location.Location; ArrayList<Marker> markers = new ArrayList<>(); markers = sortListbyDistance(markers, currentLocation.getLocation()); public static ArrayList<Marker> sortListbyDistance(ArrayList<Marker> markers, final LatLng location){.
I'm trying to make a website that asks for the user's location, then finds the closest location (100m radius) from their position using GeoLocation and displays the result in HTML. What I have trie...
I want to find the closest ATM from my current location, then will draw a route on a map, here what I have tried: func findTheClosestATM() { var distances = [Double]() for atm in a...
I am trying to figure out how isolated certain points are within my data set. I am using two methods to determine isolation, the distance of the closest neighbor and the number of neighboring sites within a given radius. All my coordinates are in latitude and longitude. This is what my data looks like: