CODEWITHSUNDEEP
geolocationmaps
Durga Prasad
Durga Prasad

Reputation: 343

Find closest airport based on latitude and longitude

How do I find closest airport using longitude and latitude ?

Any specific web services and any database to achieve ?

Upvotes: 4

Views: 14822

Answers (5)

Sal
Sal

Reputation: 155

this.nearestAirport = this.airports.find((airport) => {
              return (Math.round(airport.latitude) === Math.round(currentLocation.latitude) &&
                      Math.round(airport.longitude) === Math.round(currentLocation.longitude));
            });

Upvotes: 0

ARLabs
ARLabs

Reputation: 1524

One WebService I found is airports.pidgets.com

This is an example:

XML format http://airports.pidgets.com/v1/airports?near=45.3515,9.3753

JSon format http://airports.pidgets.com/v1/airports?near=45.3515,9.3753&format=json

[Edit] Found another webservice on aviationweather.gov (only XML and CSV)

http://aviationweather.gov/adds/dataserver_current/httpparam?dataSource=stations&requestType=retrieve&format=xml&radialDistance=20;9.3753,45.3515

From both sites you can download a "static" airports list, to perform offline search.

Regards

Upvotes: 8

sajanyamaha
sajanyamaha

Reputation: 3198

To Find nearest airport and to get directions to reach there from a specified point (Lat,Lan)

Here is a Google method,without any database to achieve this :

onclick="getNeighbourhood('<%= propLat %>','<%= propLan %>');"

For full code visit here FULL NEAREST AIRPORT SCRIPT AND STYLE

Find nearest airport

function getNeighbourhood(propLatQ,propLanQ) {
propLat=propLatQ;
propLan=propLanQ;
var myLatlng = new google.maps.LatLng(propLat,propLan);
var myOptions = {
  zoom: 8,
  center: myLatlng,
  mapTypeId: google.maps.MapTypeId.ROADMAP
}
map = new google.maps.Map(document.getElementById("map"), myOptions);
places = new google.maps.places.PlacesService(map);
google.maps.event.addListener(map, 'tilesloaded', tilesLoaded);
autocomplete = new google.maps.places.Autocomplete(document.getElementById('autocomplete'));
google.maps.event.addListener(autocomplete, 'place_changed', function() {
  showSelectedPlace();
});

Upvotes: -1

JustinJDavies
JustinJDavies

Reputation: 2693

  1. You need a dataset with fields for the airport`s latitude and longitude
  2. Use the calculation for Great-Circle distance (GCD) as outlined on the page linked below

Wikipedia article on GCD

Please provide example code/specify the language if you would like further and more specific help

CODE:

Taken from another webpage (now defunct, used waybackmachine)

using System;  
namespace HaversineFormula  
{  
    /// <summary>  
    /// The distance type to return the results in.  
    /// </summary>  
    public enum DistanceType { Miles, Kilometers };  
    /// <summary>  
    /// Specifies a Latitude / Longitude point.  
    /// </summary>  
    public struct Position  
    {  
        public double Latitude;  
        public double Longitude;  
    }  
    class Haversine  
    {  
        /// <summary>  
        /// Returns the distance in miles or kilometers of any two  
        /// latitude / longitude points.  
        /// </summary>  
        /// <param name=”pos1″></param>  
        /// <param name=”pos2″></param>  
        /// <param name=”type”></param>  
        /// <returns></returns>  
        public double Distance(Position pos1, Position pos2, DistanceType type)  
        {  
            double R = (type == DistanceType.Miles) ? 3960 : 6371;  
            double dLat = this.toRadian(pos2.Latitude - pos1.Latitude);  
            double dLon = this.toRadian(pos2.Longitude - pos1.Longitude);  
            double a = Math.Sin(dLat / 2) * Math.Sin(dLat / 2) +  
                Math.Cos(this.toRadian(pos1.Latitude)) * Math.Cos(this.toRadian(pos2.Latitude)) *  
                Math.Sin(dLon / 2) * Math.Sin(dLon / 2);  
            double c = 2 * Math.Asin(Math.Min(1, Math.Sqrt(a)));  
            double d = R * c;  
            return d;  
        }  
        /// <summary>  
        /// Convert to Radians.  
        /// </summary>  
        /// <param name="val"></param>  
        /// <returns></returns>  
        private double toRadian(double val)  
        {  
            return (Math.PI / 180) * val;  
        }  
    }  
}

Pseudocode:

This pseudocode should give you the answer you are looking for. I didn't test this and the C# will probably have syntactic errors but the gist of it should be clear.

/* Set parameters */
Position currentPosition = new Position();
Position airportPosition = new Position();
Double minDistance = Double.MaxValue;
String closestAirportName = "UNKNOWN";
Haversine hv = new Haversine();

/* Set current position, remains fixed throughout */
currentPosition.Latitude = 0.000;
currentPosition.Longitude = 0.000; 

/* Compare distance to each airport with current location
* and save results if this is the closest airport so far*/
Foreach (airport in airports) {
    airportPosition = new Position(airport.Lat, airport.Lon);
    Double distanceToAirport = hv.Distance(currentPosition, airportPosition, DistanceType.Kilometers)

    if (distanceToAirport < minDistance) {
        minDistance = distanceToAirport
        closestAirportName = airport.Name
    }
}

Upvotes: 0

AlexBottoni
AlexBottoni

Reputation: 2307

On which platform are you coding, Durga? Is it Android?

In this case, you could use the Google Maps API:

https://developers.google.com/maps/

and, in particular, Google Places:

https://developers.google.com/places/

Broswe their documentation for details. In particular, check their license.

Upvotes: 0

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