javascript - Highcharts heat map not displaying properly -

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i'm trying create heat map using highcharts it's not loading (just lines instead of heat map itself).

i'm loading data json file:

chart: {   type: 'heatmap',   margintop: 40,   marginbottom: 80,   plotborderwidth: 1 },  xaxis: {   categories: $scope.loaddays() },  yaxis: {  categories: $scope.loadhours(),  title: null,  reversed: true },  series: [{   name: null,   borderwidth: 1,   data: [],   datalabels: {     enabled: true,     color: '#000000'   } }]  $scope.getheatmapdata = function(data) {   var response = [];   $scope.data = data;    if(data && $scope.data.timestamps && $scope.data.info) {     $scope.data.timestamps.foreach(function(element, index) {       if ($scope.data.info[index]) {         response.push([           moment(element).day(),           moment(element).hour(),           $scope.data.info[index]        ]);       }     });   }   return response; };

the data being logged correctly console but, reason, heat map isn't loading.

i've created plunker can see behavior.

any ideas?

i making mistake when reloading chart. had add type event:

chartconfig.chart = { type: 'heatmap', events: { load: callback } };

plunker


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