javascript - How to display a heatmap using dburles:google-maps Meteor package? -


update: code below fixed per accepted answer , confirmed working.

i'm bit stuck meteor, please me out. i've installed dburles:google-maps package , got map show markers fine. tried display heatmap , it's causing error, can't resolve - "uncaught invalidvalueerror: setmap: not instance of map(anonymous function)"

console output can seen here - http://improveit.meteor.com/map

template.map.helpers({    issuemapoptions: function() {      // make sure maps api has loaded      if (googlemaps.loaded()) {        // map initialization options        return {          zoom: 13,          center: new google.maps.latlng(37.774546, -122.433523),          maptypeid: google.maps.maptypeid.satellite,          maptypecontrol: false,          pancontrol: false,          streetviewcontrol: false        };      }    }  });    template.map.oncreated(function() {    // can use `ready` callback interact map api once map ready.    googlemaps.ready('issuemap', function(issuemap) {              var issuedata = [        new google.maps.latlng(37.782551, -122.445368),        new google.maps.latlng(37.757676, -122.405118),        new google.maps.latlng(37.757039, -122.404346),        new google.maps.latlng(37.756335, -122.403719),        new google.maps.latlng(37.755503, -122.403406),        new google.maps.latlng(37.754665, -122.403242),        new google.maps.latlng(37.753837, -122.403172),        new google.maps.latlng(37.752986, -122.403112),        new google.maps.latlng(37.751266, -122.403355)      ];                               var issuearray = new google.maps.mvcarray(issuedata);                 var heatmaplayer = new google.maps.visualization.heatmaplayer({              data: issuearray,              radius: 20          });                  heatmaplayer.setmap(issuemap.instance);                    });  });
 <template name="map">    <h1>issue heat map</h1>    <p>this map display issues , severity</p>     <div class="map-container">      {{> googlemap name="issuemap" options=issuemapoptions}}    </div>  </template>

change line:

heatmaplayer.setmap(issuemap);

to

heatmaplayer.setmap(issuemap.instance);

the setmap method requires google map instance. callback of .ready not directly provide has options object convenience.

i confirmed works on site:

enter image description here


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