谷歌的地方Api找到附近的地方,当前的地方和附近的地方之间的距离和排序

时间:2014-07-24 20:35:28

标签: javascript jquery json google-maps-api-3 google-places-api

我正在尝试找到附近的地方并计算从当前地方到附近地点的距离,然后我想显示表格中所有地点,这些地方按当前地点的距离递增顺序。现在我已经成功了

  1. 查找附近的地方
  2. 查找从当前地点到附近每个地方的距离
  3. 按照收到的顺序显示每个这样的地点和距离作为谷歌的回复 我已将数据添加为json数组并将其添加到控制台
  4. 我想对这个数组进行排序显示已排序的数组而不是直接结果,如第3步所示。任何人都可以帮我解决这个问题吗?

    DEMO

    JQuery的

    计算距离并附加到带ID显示的表格的代码

    function createMarker(obj) {
    
        // prepare new Marker object
        var mark = new google.maps.Marker({
            position: obj.geometry.location,
            map: map,
            title: obj.name
        });
          alert(obj.name);
       var lat=document.getElementById('lat').value;
       var long=document.getElementById('lng').value;
      // alert(lat);
      //alert(long);
    
    
      var p1 = new google.maps.LatLng(lat,long);
    var p2 = new google.maps.LatLng(obj.geometry.location.lat(),obj.geometry.location.lng());
    
      google.maps.LatLng.prototype.distanceFrom = function(latlng) {
      var lat = [this.lat(), latlng.lat()]
      var lng = [this.lng(), latlng.lng()]
      var R = 6378137;
      var dLat = (lat[1]-lat[0]) * Math.PI / 180;
      var dLng = (lng[1]-lng[0]) * Math.PI / 180;
      var a = Math.sin(dLat/2) * Math.sin(dLat/2) +
      Math.cos(lat[0] * Math.PI / 180 ) * Math.cos(lat[1] * Math.PI / 180 ) *
      Math.sin(dLng/2) * Math.sin(dLng/2);
      var c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a));
      var d = R * c;
      return Math.round(d);
    }
     // var loc1 = new GLatLng(lat, long);
    //var loc2 = new GLatLng(obj.geometry.location.lat(), obj.geometry.location.lng());
    var dist = p2.distanceFrom(p1);
    //alert(dist/1000+'m');
      var distn=dist/1000;
      var dost=distn+(distn <1 ? "m" : "km")
      $('#Display').append('<tr><td>'+obj.name+'</td><td>'+dost+'</td></tr>');
      datas.push({ app:obj.name,message:distn});
     //alert(google.maps.geometry.spherical.computeDistanceBetween(p1, p2)+'sa');
    
    
    
    
        markers.push(mark);
    
        // prepare info window
        var infowindow = new google.maps.InfoWindow({
            content: '<img src="' + obj.icon + '" /><font style="color:#000;">' + obj.name + 
            '<br />Rating: ' + obj.rating + '<br />Vicinity: ' + obj.vicinity + '</font>'
        });
    
        // add event handler to current marker
        google.maps.event.addListener(mark, 'click', function() {
            clearInfos();
            infowindow.open(map,mark);
        });
    
    
    
        infos.push(infowindow);
    
      console.log(datas);
    
    
       // parse(datas);
    }
    

    JSON DATA Outputed(样本)位置可能会有所不同,但距离是字段

     [{
           "place": "Taïm",
           "Distance": 1.193
       }, {
           "place": "Balthazar",
           "Distance": 1.127
       }, {
           "place": "Tribeca Grill",
           "Distance": 0.678
       }, {
           "place": "Lombardi's Pizza",
           "Distance": 1.179
       }, {
           "place": "Whole Foods Market",
           "Distance": 0.484
       }, {
           "place": "Best Western Bowery Hanbee Hotel",
           "Distance": 1.015
       }, {
           "place": "Les Halles",
           "Distance": 0.536
       }, {
           "place": "Cafe Gitane",
           "Distance": 1.367
       }, {
           "place": "Shake Shack",
           "Distance": 0.782
       }, {
           "place": "Bubby's",
           "Distance": 0.64
       }, {
           "place": "Ninja New York",
           "Distance": 0.397
       }, {
           "place": "La Esquina",
           "Distance": 1.056
       }, {
           "place": "Peasant",
           "Distance": 1.277
       }, {
           "place": "Apotheke",
           "Distance": 0.658
       }, {
           "place": "Joe's Shanghai",
           "Distance": 0.697
       }, {
           "place": "Kaffe 1668",
           "Distance": 0.436
       }, {
           "place": "Rice To Riches",
           "Distance": 1.199
       }, {
           "place": "SUBWAY® Restaurants",
           "Distance": 0.382
       }, {
           "place": "Bouley",
           "Distance": 0.384
       }, {
           "place": "North End Grill",
           "Distance": 0.808
       }]
    

1 个答案:

答案 0 :(得分:2)

“地方信息库”有一个类,可让您按特定顺序获取结果。请参阅documentation on the RankBy class

var request = {
    location: coords,
    rankBy: google.maps.places.RankBy.DISTANCE
};

var service = new google.maps.places.PlacesService(map);
service.search(request, callback);

要计算2个点之间的距离,可以使用具有computeDistanceBetween方法的几何库。 See here

var distance = google.maps.geometry.spherical.computeDistanceBetween(a, b);

如果使用上述2个库,请不要忘记将它们包含在API脚本调用中。

https://maps.googleapis.com/maps/api/js?sensor=false&libraries=places,geometry

希望这有帮助!