使用 for 循环将标记聚类器添加到 google 地图？

Question

对于this map of Germany，我展示了选择抵制仇恨的报亭sheet。到目前为止，包含 14 个条目的最小化地图工作正常。但是有些地区，有不止一家商店，google地图似乎只显示一个标记：

我知道其实还有更多，如果你放大这些位置，其他标记就会出现。但是聚类会更好，它显示标记的数量，如果这个标记周围有更多的话。我在 GitHub: Marker Clusterer 找到了这个，但即使是这个简单的例子，我也不知道如何将这个库添加到我的地图中。也许我对用于显示标记的 for 循环有点困惑。

my map的来源基本是这个：

<html><head>
<style type="text/css">
      html { height: 100% } body { height: 100%; margin: 0; padding: 0; } a { text-decoration:none; color:#000; } #map_canvas { height: 100% }
    </style>
    <script type="text/javascript"
      src="https://maps.googleapis.com/maps/api/js?key=ACCESSTOKEN&sensor=false">
    </script>
    <script type="text/javascript">
 
 var Orte = [ 
 [51.418288,7.339213,"EDEKA Schwalemeyer, Bommerfelder Ring 110, 58452 Witten, Nordrhein-Westfalen. Quelle: http://goo.gl/jQe2Oo"],
 [51.418266,7.342316,"Bonema Trinkhalle & Minishop, Bommerfelder Ring 86, 58452 Witten, Nordrhein-Westfalen. Quelle: http://goo.gl/jQe2Oo"], 
 [51.422492,7.338546,"Kiosk, Auf dem Brenschen 21, 58452 Witten, Nordrhein-Westfalen. Quelle: http://goo.gl/jQe2Oo"],
 [51.415127,7.337124,"Holzofenbäckerei, Elberfelder Straße 11, 58452 Witten, Nordrhein-Westfalen. Quelle: http://goo.gl/jQe2Oo"]
 ];
 
 function initialize()
  { 
  var map = new google.maps.Map(document.getElementById('map_canvas'));
  map.controls[google.maps.ControlPosition.BOTTOM_LEFT].push(legende);  
  var bounds = new google.maps.LatLngBounds();
  var infowindow = new google.maps.InfoWindow();
  var image = {url:"bildfrei.png",size:new google.maps.Size(32,32),};
  
  for (var i in Orte)
   {
    var p = Orte[i];
    var latlng = new google.maps.LatLng(p[0],p[1]);bounds.extend(latlng);         
    var marker = new google.maps.Marker({position:latlng,map:map,title:p[2],icon:image});     
    google.maps.event.addListener(marker, 'click', function() {infowindow.setContent(this.title);infowindow.open(map, this);});
   }   
  map.fitBounds(bounds);
  }
 
  google.maps.event.addDomListener(window, 'load', initialize);   
  
    </script>    
</head>  
<body onload="initialize()">
<div id="map_canvas" style="width:100%; height:100%"></div>    
  </body>
</html>

我已经尝试添加 markerclusterer_compiled.js 和 var markerCluster = new MarkerClusterer(map, markers); 以及 var map = new google.maps.Map(document.getElementById('map_canvas')); 下面的 markerCluster ...但是没有成功。

有人可以帮帮我吗？ :-)

更新：带有 js-library clusterer 的版本：

    <html><head>
    <style type="text/css">
          html { height: 100% } body { height: 100%; margin: 0; padding: 0; } a { text-decoration:none; color:#000; } #map-container { padding: 6px; border-width: 1px; border-style: solid;border-color: #ccc #ccc #999 #ccc;-webkit-box-shadow: rgba(64, 64, 64, 0.5) 0 2px 5px;-moz-box-shadow: rgba(64, 64, 64, 0.5) 0 2px 5px; box-shadow: rgba(64, 64, 64, 0.1) 0 2px 5px;  width: 600px; } #map_canvas { height: 100% }
        </style>
        <script type="text/javascript"
          src="https://maps.googleapis.com/maps/api/js?key=ACCESSTOKEN&sensor=false">
<script>
      var script = '<script type="text/javascript" src="markerclusterer';
      if (document.location.search.indexOf('compiled') !== -1) {
        script += '_compiled';
      }
      script += '.js"><' + '/script>';
      document.write(script);
    </script>
        </script>
        <script type="text/javascript">
     
     var Orte = [ 
     [51.418288,7.339213,"EDEKA Schwalemeyer, Bommerfelder Ring 110, 58452 Witten, Nordrhein-Westfalen. Quelle: http://goo.gl/jQe2Oo"],
     [51.418266,7.342316,"Bonema Trinkhalle & Minishop, Bommerfelder Ring 86, 58452 Witten, Nordrhein-Westfalen. Quelle: http://goo.gl/jQe2Oo"], 
     [51.422492,7.338546,"Kiosk, Auf dem Brenschen 21, 58452 Witten, Nordrhein-Westfalen. Quelle: http://goo.gl/jQe2Oo"],
     [51.415127,7.337124,"Holzofenbäckerei, Elberfelder Straße 11, 58452 Witten, Nordrhein-Westfalen. Quelle: http://goo.gl/jQe2Oo"]
     ];
     
     function initialize()
      { 
      var map = new google.maps.Map(document.getElementById('map_canvas'));
      var markerCluster = new MarkerClusterer(map, marker);    
      map.controls[google.maps.ControlPosition.BOTTOM_LEFT].push(legende);  
      var bounds = new google.maps.LatLngBounds();
      var infowindow = new google.maps.InfoWindow();
      var image = {url:"bildfrei.png",size:new google.maps.Size(32,32),};
      
      for (var i in Orte)
       {
        var p = Orte[i];
        var latlng = new google.maps.LatLng(p[0],p[1]);bounds.extend(latlng);         
        var marker = new google.maps.Marker({position:latlng,map:map,title:p[2],icon:image});     
        google.maps.event.addListener(marker, 'click', function() {infowindow.setContent(this.title);infowindow.open(map, this);});
       }   
      map.fitBounds(bounds);
      }
     
      google.maps.event.addDomListener(window, 'load', initialize);   
      
        </script>    
    </head>  
    <body onload="initialize()">
    <div id="map-container">
    <div id="map_canvas" style="width:100%; height:100%"></div>    
    </div>  
      </body>
    </html>

Answer 1

您的标记未被聚类，因为您从未将它们添加到 MarkerClusterer。修复它的一种方法是在创建它们时添加它们：

for (var i in Orte) {
    var p = Orte[i];
    var latlng = new google.maps.LatLng(p[0], p[1]);
    bounds.extend(latlng);
    var marker = new google.maps.Marker({
        position: latlng,
        map: map,
        title: p[2],
        icon: image
    });
    markerCluster.addMarker(marker);
    google.maps.event.addListener(marker, 'click', function () {
        infowindow.setContent(this.title);
        infowindow.open(map, this);
    });
}

working fiddle

代码片段：

var Orte = [
  [51.418288, 7.339213, "EDEKA Schwalemeyer, Bommerfelder Ring 110, 58452 Witten, Nordrhein-Westfalen. Quelle: http://goo.gl/jQe2Oo"],
  [51.418266, 7.342316, "Bonema Trinkhalle & Minishop, Bommerfelder Ring 86, 58452 Witten, Nordrhein-Westfalen. Quelle: http://goo.gl/jQe2Oo"],
  [51.422492, 7.338546, "Kiosk, Auf dem Brenschen 21, 58452 Witten, Nordrhein-Westfalen. Quelle: http://goo.gl/jQe2Oo"],
  [51.415127, 7.337124, "Holzofenbäckerei, Elberfelder Straße 11, 58452 Witten, Nordrhein-Westfalen. Quelle: http://goo.gl/jQe2Oo"]
];

function initialize() {
  var map = new google.maps.Map(document.getElementById('map_canvas'));
  var markerCluster = new MarkerClusterer(map, marker);
  // map.controls[google.maps.ControlPosition.BOTTOM_LEFT].push(legende);
  var bounds = new google.maps.LatLngBounds();
  var infowindow = new google.maps.InfoWindow();
  var image = {
    url: "bildfrei.png",
    size: new google.maps.Size(32, 32),
  };

  for (var i in Orte) {
    var p = Orte[i];
    var latlng = new google.maps.LatLng(p[0], p[1]);
    bounds.extend(latlng);
    var marker = new google.maps.Marker({
      position: latlng,
      map: map,
      title: p[2]
        /*,
                    icon: image */
    });
    markerCluster.addMarker(marker);
    google.maps.event.addListener(marker, 'click', function() {
      infowindow.setContent(this.title);
      infowindow.open(map, this);
    });
  }
  map.fitBounds(bounds);
  google.maps.event.addListenerOnce(map, 'bounds_changed', function() {
    var newZoom = map.getZoom() - 2;
    map.setZoom(newZoom);
  });
}

google.maps.event.addDomListener(window, 'load', initialize);

html {
  height: 100%
}
body {
  height: 100%;
  margin: 0;
  padding: 0;
}
a {
  text-decoration: none;
  color: #000;
}
#map-container {
  padding: 6px;
  border-width: 1px;
  border-style: solid;
  border-color: #ccc #ccc #999 #ccc;
  -webkit-box-shadow: rgba(64, 64, 64, 0.5) 0 2px 5px;
  -moz-box-shadow: rgba(64, 64, 64, 0.5) 0 2px 5px;
  box-shadow: rgba(64, 64, 64, 0.1) 0 2px 5px;
  width: 600px;
  height: 100%;
}
#map_canvas {
  height: 100%
}

<script src="https://maps.googleapis.com/maps/api/js"></script>
<script src="https://google-maps-utility-library-v3.googlecode.com/svn/trunk/markerclustererplus/src/markerclusterer.js"></script>
<div id="map-container">
  <div id="map_canvas" style="width:100%; height:100%"></div>
</div>

使用 for 循环将标记聚类器添加到 google 地图？

Adding marker clusterer to google maps with for-loop?

google-maps

javascript

markerclusterer