var rawData = [{
"date": "2016-11-15",
"value": 4
}, {
"date": "2016-11-15",
"value": 1
}, {
"date": "2016-11-16",
"value": 3
}, {
"date": "2016-11-16",
"value": 4
}, {
"date": "2016-11-17",
"value": 3
}, {
"date": "2016-11-17",
"value": 3
}, {
"date": "2016-11-18",
"value": 5
}, {
"date": "2016-11-18",
"value": 1
}, {
"date": "2016-11-19",
"value": 4
}, {
"date": "2016-11-19",
"value": 1
}, {
"date": "2016-11-20",
"value": 4
}, {
"date": "2016-11-20",
"value": 3
}, {
"date": "2016-11-21",
"value": 3
}, {
"date": "2016-11-21",
"value": 3
}, {
"date": "2016-11-22",
"value": 5
}, {
"date": "2016-11-22",
"value": 3
}, {
"date": "2016-11-23",
"value": 4
}, {
"date": "2016-11-23",
"value": 4
}, {
"date": "2016-11-24",
"value": 4
}, {
"date": "2016-11-24",
"value": 2
}, {
"date": "2016-11-25",
"value": 5
}, {
"date": "2016-11-25",
"value": 4
}, {
"date": "2016-11-26",
"value": 5
}, {
"date": "2016-11-26",
"value": 1
}, {
"date": "2016-11-27",
"value": 5
}, {
"date": "2016-11-27",
"value": 3
}, {
"date": "2016-11-28",
"value": 5
}, {
"date": "2016-11-28",
"value": 1
}, {
"date": "2016-11-29",
"value": 3
}, {
"date": "2016-11-29",
"value": 3
}, {
"date": "2016-11-30",
"value": 4
}, {
"date": "2016-11-30",
"value": 3
}, {
"date": "2016-12-01",
"value": 4
}, {
"date": "2016-12-01",
"value": 2
}, {
"date": "2016-12-02",
"value": 4
}, {
"date": "2016-12-02",
"value": 1
}, {
"date": "2016-12-03",
"value": 4
}, {
"date": "2016-12-03",
"value": 3
}, {
"date": "2016-12-04",
"value": 3
}, {
"date": "2016-12-04",
"value": 1
}, {
"date": "2016-12-05",
"value": 5
}, {
"date": "2016-12-05",
"value": 2
}, {
"date": "2016-12-06",
"value": 3
}, {
"date": "2016-12-06",
"value": 3
}, {
"date": "2016-12-07",
"value": 5
}, {
"date": "2016-12-07",
"value": 1
}, {
"date": "2016-12-08",
"value": 4
}, {
"date": "2016-12-08",
"value": 1
}, {
"date": "2016-12-09",
"value": 3
}, {
"date": "2016-12-09",
"value": 4
}, {
"date": "2016-12-10",
"value": 5
}, {
"date": "2016-12-10",
"value": 2
}, {
"date": "2016-12-11",
"value": 5
}, {
"date": "2016-12-11",
"value": 1
}, {
"date": "2016-12-12",
"value": 3
}, {
"date": "2016-12-12",
"value": 2
}];
//aggregate and sum all elements with the same date key
var aggregatedTotals = rawData.reduce(function(accumulator, data) {
if (accumulator.hasOwnProperty(data.date)) {
accumulator[data.date] += data.value;
} else {
accumulator[data.date] = data.value;
}
return accumulator;
}, {});
//create a brand new array containing the summed up values
var chartData = Object.keys(aggregatedTotals).map(function(date) {
return {
"date": date,
"value": aggregatedTotals[date]
};
});
var chart = AmCharts.makeChart("chartdiv", {
"type": "serial",
"dataProvider": chartData,
"graphs": [{
"bullet": "round",
"valueField": "value"
}],
"dataDateFormat": "YYYY-MM-DD",
"categoryField": "date",
"categoryAxis": {
"dateFormats": [{
"period": "DD",
"format": "DD"
}, {
"period": "WW",
"format": "MMM DD"
}, {
"period": "MM",
"format": "MMM"
}, {
"period": "YYYY",
"format": "YYYY"
}],
"parseDates": true,
"minPeriod": "7DD",
}
});
#chartdiv {
width: 100%;
height: 300px;
}
<script type="text/javascript" src="//www.amcharts.com/lib/3/amcharts.js"></script>
<script type="text/javascript" src="//www.amcharts.com/lib/3/serial.js"></script>
<div id="chartdiv"></div>