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How to render customized markers and cluster together? I have a condition where i am supposed to use multiple images as one marker and then have to implement marker cluster

Piyush Jain
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1 Answers1

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Check this Marker Clustering documentation:

You can use the MarkerClusterer library in combination with the Google Maps JavaScript API to combine markers of close proximity into clusters, and simplify the display of markers on the map.

Here is the code sample by Google:

<!DOCTYPE html>
<html>
  <head>
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no">
    <meta charset="utf-8">
    <title>Marker Clustering</title>
    <style>
      /* Always set the map height explicitly to define the size of the div
       * element that contains the map. */
      #map {
        height: 100%;
      }
      /* Optional: Makes the sample page fill the window. */
      html, body {
        height: 100%;
        margin: 0;
        padding: 0;
      }
    </style>
  </head>
  <body>
    <div id="map"></div>
    <script>

      function initMap() {

        var map = new google.maps.Map(document.getElementById('map'), {
          zoom: 3,
          center: {lat: -28.024, lng: 140.887}
        });

        // Create an array of alphabetical characters used to label the markers.
        var labels = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';

        // Add some markers to the map.
        // Note: The code uses the JavaScript Array.prototype.map() method to
        // create an array of markers based on a given "locations" array.
        // The map() method here has nothing to do with the Google Maps API.
        var markers = locations.map(function(location, i) {
          return new google.maps.Marker({
            position: location,
            label: labels[i % labels.length]
          });
        });

        // Add a marker clusterer to manage the markers.
        var markerCluster = new MarkerClusterer(map, markers,
            {imagePath: 'https://developers.google.com/maps/documentation/javascript/examples/markerclusterer/m'});
      }
      var locations = [
        {lat: -31.563910, lng: 147.154312},
        {lat: -33.718234, lng: 150.363181},
        {lat: -33.727111, lng: 150.371124},
        {lat: -33.848588, lng: 151.209834},
        {lat: -33.851702, lng: 151.216968},
        {lat: -34.671264, lng: 150.863657},
        {lat: -35.304724, lng: 148.662905},
        {lat: -36.817685, lng: 175.699196},
        {lat: -36.828611, lng: 175.790222},
        {lat: -37.750000, lng: 145.116667},
        {lat: -37.759859, lng: 145.128708},
        {lat: -37.765015, lng: 145.133858},
        {lat: -37.770104, lng: 145.143299},
        {lat: -37.773700, lng: 145.145187},
        {lat: -37.774785, lng: 145.137978},
        {lat: -37.819616, lng: 144.968119},
        {lat: -38.330766, lng: 144.695692},
        {lat: -39.927193, lng: 175.053218},
        {lat: -41.330162, lng: 174.865694},
        {lat: -42.734358, lng: 147.439506},
        {lat: -42.734358, lng: 147.501315},
        {lat: -42.735258, lng: 147.438000},
        {lat: -43.999792, lng: 170.463352}
      ]
    </script>
    <script src="https://developers.google.com/maps/documentation/javascript/examples/markerclusterer/markerclusterer.js">
    </script>
    <script async defer
    src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&callback=initMap">
    </script>
  </body>
</html>

Here are links that can further help you:

To combine images you can create a function that will merge images before placing your marker. Try checking this SO post, OP uses javascript and HTML Canvas drawImage().

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