Question

如何使用经度和纬度找到最近的机场？

任何特定的Web服务和任何数据库实现？

Answer 1

我找到的一个WebService是airports.pidgets.com

这是一个例子：

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

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

[编辑] 找到另一个关于aviationweather.gov的网络服务（只有XML和CSV）

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

您可以从这两个站点下载“静态”机场列表，以执行离线搜索。

此致

Answer 2

您需要一个包含机场纬度和字段的数据集经度
使用下面链接页面上列出的大圆距离（GCD）计算

Wikipedia article on GCD

如果您想获得更多更具体的帮助，请提供示例代码/指定语言

<强> CODE：

取自其他网页（现已解散，使用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;  
        }  
    }  
}

<强>伪代码：

这个伪代码可以为您提供所需的答案。我没有测试过这个，C＃可能会有语法错误，但它的要点应该是明确的。

/* 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
    }
}

Answer 3

你在哪个平台编码，杜尔加？是Android吗？

在这种情况下，您可以使用Google Maps API：

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

，特别是Google商家信息：

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

Broswe他们的文档了解详情。特别是，检查他们的许可证。

Answer 4

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

Answer 5

查找最近的机场并获取从指定地点（Lat，Lan）到达那里的路线

以下是Google方法，没有任何数据库来实现此目的：

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

要获取完整代码，请访问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();
});

根据纬度和经度查找最近的机场

5 个答案: