Points Aggregation
Documentation
This demo illustrates the Chart widget's data aggregation feature using the line, range area, and bar series. The line series shows temperature changes using average, minimum, or maximum temperature values in the selected time interval. The range area series shows the temperature range for the same time interval and uses a custom aggregate function. The bar series illustrates precipitation and is not aggregated.
www.worldweatheronline.com
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$(function(){
var chart = $("#chart").dxChart({
dataSource: dataSource,
title: "Weather in Las Vegas, NV (2017)",
commonSeriesSettings: {
argumentField: "date"
},
argumentAxis: {
argumentType: "datetime",
aggregationInterval: "week",
valueMarginsEnabled: false
},
valueAxis: [{
name: "temperature",
title: {
text: "Temperature, °C",
font: {
color: "#e91e63"
}
},
label: {
font: {
color: "#e91e63"
}
}
}, {
name: "precipitation",
position: "right",
title: {
text: "Precipitation, mm",
font: {
color: "#03a9f4"
}
},
label: {
font: {
color: "#03a9f4"
}
}
}
],
legend: {
visible: false
},
series: [{
axis: "precipitation",
color: "#03a9f4",
type: "bar",
valueField: "precip",
name: "Precipitation"
}, {
axis: "temperature",
color: "#ffc0bb",
type: "rangeArea",
rangeValue1Field: "minTemp",
rangeValue2Field: "maxTemp",
aggregation: {
enabled: true,
method: "custom",
calculate: function(aggregationInfo, series) {
if(!aggregationInfo.data.length) {
return;
}
var temp = aggregationInfo.data.map(function(item) { return item.temp; }),
maxTemp = Math.max.apply(null, temp),
minTemp = Math.min.apply(null, temp);
return {
date: aggregationInfo.intervalStart,
maxTemp: maxTemp,
minTemp: minTemp
};
}
},
name: "Temperature range"
}, {
axis: "temperature",
color: "#e91e63",
valueField: "temp",
point: {
size: 7
},
aggregation: {
enabled: true
},
name: "Average temperature"
}],
tooltip: {
enabled: true,
customizeTooltip: function (arg) {
return customTooltipHandlers[arg.seriesName](arg, arg.point.aggregationInfo);
}
}
}).dxChart("instance");
$("#useAggregationToggle").dxCheckBox({
text: "Aggregation enabled",
value: true,
onValueChanged: function(data) {
chart.option("series[1].aggregation.enabled", data.value);
chart.option("series[2].aggregation.enabled", data.value);
}
});
$("#aggregateIntervalSelector").dxSelectBox({
items: intervals,
value: "week",
valueExpr: "interval",
displayExpr: "displayName",
onValueChanged: function(data) {
chart.option("argumentAxis.aggregationInterval", data.value);
}
});
$("#aggregateFunctionSelector").dxSelectBox({
items: functions,
value: "avg",
valueExpr: "func",
displayExpr: "displayName",
onValueChanged: function(data) {
chart.option("series[2].aggregation.method", data.value);
}
});
var customTooltipHandlers = {
"Average temperature": function(arg, aggregationInfo) {
var start = aggregationInfo && aggregationInfo.intervalStart,
end = aggregationInfo && aggregationInfo.intervalEnd;
return {
text: (!aggregationInfo ?
"Date: " + arg.argument.toDateString() :
"Interval: " + start.toDateString() +
" - " + end.toDateString()) +
"<br/>Temperature: " + arg.value.toFixed(2) + " °C"
};
},
"Temperature range": function(arg, aggregationInfo) {
var start = aggregationInfo.intervalStart,
end = aggregationInfo.intervalEnd;
return {
text: "Interval: " + start.toDateString() +
" - " + end.toDateString() +
"<br/>Temperature range: " + arg.rangeValue1 +
" - " + arg.rangeValue2 + " °C"
};
},
"Precipitation": function(arg) {
return {
text: "Date: " + arg.argument.toDateString() +
"<br/>Precipitation: " + arg.valueText + " mm"
};
}
};
});
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>DevExtreme Demo</title>
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0" />
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<script>window.jQuery || document.write(decodeURIComponent('%3Cscript src="js/jquery.min.js"%3E%3C/script%3E'))</script>
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/19.1.4/css/dx.common.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/19.1.4/css/dx.light.css" />
<script src="https://cdn3.devexpress.com/jslib/19.1.4/js/dx.all.js"></script>
<script src="data.js"></script>
<link rel="stylesheet" type="text/css" href="styles.css" />
<script src="index.js"></script>
</head>
<body class="dx-viewport">
<div class="demo-container">
<div id="chart-demo">
<div id="chart"></div>
<div class="options">
<div class="caption">Options</div>
<div class="option">
<div id="useAggregationToggle"></div>
</div>
<div class="option">
<span>Interval:</span>
<div id="aggregateIntervalSelector"></div>
</div>
<div class="option">
<span>Method:</span>
<div id="aggregateFunctionSelector"></div>
</div>
</div>
</div>
</div>
</body>
</html>
#chart-demo {
height: 700px;
width: 100%;
}
#chart {
height: 500px;
margin: 0 0 15px;
}
.options {
padding: 20px;
margin-top: 20px;
background-color: rgba(191, 191, 191, 0.15);
}
.caption {
font-size: 18px;
font-weight: 500;
}
.option {
margin-top: 10px;
}
.option > span {
width: 50px;
display: inline-block;
margin-right: 10px;
}
.option > .dx-selectbox {
display: inline-block;
vertical-align: middle;
}
var intervals = [{
displayName: "One week",
interval: "week"
}, {
displayName: "Two weeks",
interval: { weeks: 2 }
}, {
displayName: "Month",
interval: "month"
}];
var functions = [{
displayName: "Average",
func: "avg"
}, {
displayName: "Minimum",
func: "min"
}, {
displayName: "Maximum",
func: "max"
}];
var dataSource = [{
"date":"2017-01-01",
"temp":9.5,
"precip":0.1
},
{
"date":"2017-01-02",
"temp":8,
"precip":0.4
},
{
"date":"2017-01-03",
"temp":7.5,
"precip":0.2
},
{
"date":"2017-01-04",
"temp":8.5,
"precip":0.1
},
{
"date":"2017-01-05",
"temp":10,
"precip":0.3
},
{
"date":"2017-01-06",
"temp":3,
"precip":0
},
{
"date":"2017-01-07",
"temp":5,
"precip":0.3
},
{
"date":"2017-01-08",
"temp":9.5,
"precip":0
},
{
"date":"2017-01-09",
"temp":11,
"precip":0.5
},
{
"date":"2017-01-10",
"temp":8,
"precip":0
},
{
"date":"2017-01-11",
"temp":11.5,
"precip":0.3
},
{
"date":"2017-01-12",
"temp":9.5,
"precip":2.1
},
{
"date":"2017-01-13",
"temp":11.5,
"precip":3.5
},
{
"date":"2017-01-14",
"temp":11,
"precip":0.1
},
{
"date":"2017-01-15",
"temp":10.5,
"precip":0
},
{
"date":"2017-01-16",
"temp":6.5,
"precip":0
},
{
"date":"2017-01-17",
"temp":7.5,
"precip":0
},
{
"date":"2017-01-18",
"temp":8,
"precip":0.1
},
{
"date":"2017-01-19",
"temp":8.5,
"precip":1.3
},
{
"date":"2017-01-20",
"temp":5.5,
"precip":5.3
},
{
"date":"2017-01-21",
"temp":9,
"precip":0.1
},
{
"date":"2017-01-22",
"temp":6,
"precip":16.6
},
{
"date":"2017-01-23",
"temp":8.5,
"precip":5.5
},
{
"date":"2017-01-24",
"temp":6.5,
"precip":1.3
},
{
"date":"2017-01-25",
"temp":4.5,
"precip":0
},
{
"date":"2017-01-26",
"temp":5.5,
"precip":0
},
{
"date":"2017-01-27",
"temp":3,
"precip":0
},
{
"date":"2017-01-28",
"temp":6.5,
"precip":0
},
{
"date":"2017-01-29",
"temp":8,
"precip":0
},
{
"date":"2017-01-30",
"temp":10.5,
"precip":0
},
{
"date":"2017-01-31",
"temp":13,
"precip":0
},
{
"date":"2017-02-01",
"temp":10.5,
"precip":0
},
{
"date":"2017-02-02",
"temp":12,
"precip":0
},
{
"date":"2017-02-03",
"temp":13,
"precip":0.2
},
{
"date":"2017-02-04",
"temp":10,
"precip":0
},
{
"date":"2017-02-05",
"temp":11.5,
"precip":0
},
{
"date":"2017-02-06",
"temp":11.5,
"precip":0.1
},
{
"date":"2017-02-07",
"temp":12.5,
"precip":0.5
},
{
"date":"2017-02-08",
"temp":13,
"precip":0
},
{
"date":"2017-02-09",
"temp":15.5,
"precip":0
},
{
"date":"2017-02-10",
"temp":16.5,
"precip":0.1
},
{
"date":"2017-02-11",
"temp":14.5,
"precip":0.8
},
{
"date":"2017-02-12",
"temp":13.5,
"precip":0.1
},
{
"date":"2017-02-13",
"temp":13.5,
"precip":0
},
{
"date":"2017-02-14",
"temp":12,
"precip":0
},
{
"date":"2017-02-15",
"temp":13.5,
"precip":0
},
{
"date":"2017-02-16",
"temp":14.5,
"precip":0
},
{
"date":"2017-02-17",
"temp":12.5,
"precip":4.5
},
{
"date":"2017-02-18",
"temp":10,
"precip":14.4
},
{
"date":"2017-02-19",
"temp":13.5,
"precip":0.5
},
{
"date":"2017-02-20",
"temp":14,
"precip":0.6
},
{
"date":"2017-02-21",
"temp":15,
"precip":0
},
{
"date":"2017-02-22",
"temp":11,
"precip":0
},
{
"date":"2017-02-23",
"temp":7.5,
"precip":0
},
{
"date":"2017-02-24",
"temp":6,
"precip":0
},
{
"date":"2017-02-25",
"temp":7,
"precip":0
},
{
"date":"2017-02-26",
"temp":8,
"precip":0
},
{
"date":"2017-02-27",
"temp":8.5,
"precip":0.1
},
{
"date":"2017-02-28",
"temp":10,
"precip":0
},
{
"date":"2017-03-01",
"temp":9,
"precip":0
},
{
"date":"2017-03-02",
"temp":11,
"precip":0
},
{
"date":"2017-03-03",
"temp":15,
"precip":0
},
{
"date":"2017-03-04",
"temp":14.5,
"precip":0
},
{
"date":"2017-03-05",
"temp":12.5,
"precip":0
},
{
"date":"2017-03-06",
"temp":7.5,
"precip":0
},
{
"date":"2017-03-07",
"temp":11,
"precip":0
},
{
"date":"2017-03-08",
"temp":16,
"precip":0
},
{
"date":"2017-03-09",
"temp":19.5,
"precip":0
},
{
"date":"2017-03-10",
"temp":20,
"precip":0
},
{
"date":"2017-03-11",
"temp":20.5,
"precip":0
},
{
"date":"2017-03-12",
"temp":21.5,
"precip":0
},
{
"date":"2017-03-13",
"temp":21.5,
"precip":0
},
{
"date":"2017-03-14",
"temp":23.5,
"precip":0
},
{
"date":"2017-03-15",
"temp":23,
"precip":0
},
{
"date":"2017-03-16",
"temp":23,
"precip":0
},
{
"date":"2017-03-17",
"temp":22.5,
"precip":0
},
{
"date":"2017-03-18",
"temp":23.5,
"precip":0
},
{
"date":"2017-03-19",
"temp":24,
"precip":0
},
{
"date":"2017-03-20",
"temp":23.5,
"precip":0
},
{
"date":"2017-03-21",
"temp":22,
"precip":0
},
{
"date":"2017-03-22",
"temp":18.5,
"precip":4
},
{
"date":"2017-03-23",
"temp":15,
"precip":2.4
},
{
"date":"2017-03-24",
"temp":20.5,
"precip":0
},
{
"date":"2017-03-25",
"temp":19,
"precip":0
},
{
"date":"2017-03-26",
"temp":18.5,
"precip":0
},
{
"date":"2017-03-27",
"temp":18,
"precip":0
},
{
"date":"2017-03-28",
"temp":17,
"precip":0
},
{
"date":"2017-03-29",
"temp":21,
"precip":0
},
{
"date":"2017-03-30",
"temp":19.5,
"precip":0
},
{
"date":"2017-03-31",
"temp":16.5,
"precip":0.2
},
{
"date":"2017-04-01",
"temp":19,
"precip":0
},
{
"date":"2017-04-02",
"temp":20,
"precip":0
},
{
"date":"2017-04-03",
"temp":18,
"precip":0
},
{
"date":"2017-04-04",
"temp":16.5,
"precip":0
},
{
"date":"2017-04-05",
"temp":17,
"precip":0
},
{
"date":"2017-04-06",
"temp":21.5,
"precip":0
},
{
"date":"2017-04-07",
"temp":22,
"precip":0
},
{
"date":"2017-04-08",
"temp":19,
"precip":0.2
},
{
"date":"2017-04-09",
"temp":14.5,
"precip":0
},
{
"date":"2017-04-10",
"temp":17,
"precip":0
},
{
"date":"2017-04-11",
"temp":19.5,
"precip":0
},
{
"date":"2017-04-12",
"temp":21.5,
"precip":0
},
{
"date":"2017-04-13",
"temp":21.5,
"precip":0
},
{
"date":"2017-04-14",
"temp":19,
"precip":0
},
{
"date":"2017-04-15",
"temp":21,
"precip":0
},
{
"date":"2017-04-16",
"temp":22.5,
"precip":0
},
{
"date":"2017-04-17",
"temp":21.5,
"precip":0
},
{
"date":"2017-04-18",
"temp":21.5,
"precip":0
},
{
"date":"2017-04-19",
"temp":21.5,
"precip":0
},
{
"date":"2017-04-20",
"temp":22,
"precip":0
},
{
"date":"2017-04-21",
"temp":20,
"precip":0
},
{
"date":"2017-04-22",
"temp":23,
"precip":0
},
{
"date":"2017-04-23",
"temp":26,
"precip":0
},
{
"date":"2017-04-24",
"temp":25,
"precip":0
},
{
"date":"2017-04-25",
"temp":22,
"precip":0
},
{
"date":"2017-04-26",
"temp":23.5,
"precip":0
},
{
"date":"2017-04-27",
"temp":23,
"precip":0
},
{
"date":"2017-04-28",
"temp":19,
"precip":0
},
{
"date":"2017-04-29",
"temp":19.5,
"precip":0
},
{
"date":"2017-04-30",
"temp":21.5,
"precip":0
},
{
"date":"2017-05-01",
"temp":26,
"precip":0
},
{
"date":"2017-05-02",
"temp":26,
"precip":0
},
{
"date":"2017-05-03",
"temp":25.5,
"precip":0
},
{
"date":"2017-05-04",
"temp":28,
"precip":0
},
{
"date":"2017-05-05",
"temp":28.5,
"precip":0
},
{
"date":"2017-05-06",
"temp":27,
"precip":0.4
},
{
"date":"2017-05-07",
"temp":17,
"precip":0.1
},
{
"date":"2017-05-08",
"temp":17,
"precip":0
},
{
"date":"2017-05-09",
"temp":20,
"precip":1.7
},
{
"date":"2017-05-10",
"temp":19.5,
"precip":0.3
},
{
"date":"2017-05-11",
"temp":23,
"precip":0
},
{
"date":"2017-05-12",
"temp":26,
"precip":0
},
{
"date":"2017-05-13",
"temp":22.5,
"precip":0
},
{
"date":"2017-05-14",
"temp":23,
"precip":0
},
{
"date":"2017-05-15",
"temp":19.5,
"precip":0
},
{
"date":"2017-05-16",
"temp":20,
"precip":0
},
{
"date":"2017-05-17",
"temp":18.5,
"precip":0
},
{
"date":"2017-05-18",
"temp":19.5,
"precip":0
},
{
"date":"2017-05-19",
"temp":21.5,
"precip":0
},
{
"date":"2017-05-20",
"temp":24,
"precip":0
},
{
"date":"2017-05-21",
"temp":27.5,
"precip":0
},
{
"date":"2017-05-22",
"temp":29,
"precip":0
},
{
"date":"2017-05-23",
"temp":30.5,
"precip":0
},
{
"date":"2017-05-24",
"temp":31,
"precip":0
},
{
"date":"2017-05-25",
"temp":29.5,
"precip":0
},
{
"date":"2017-05-26",
"temp":27,
"precip":0
},
{
"date":"2017-05-27",
"temp":26,
"precip":0
},
{
"date":"2017-05-28",
"temp":29,
"precip":0
},
{
"date":"2017-05-29",
"temp":30.5,
"precip":0
},
{
"date":"2017-05-30",
"temp":31.5,
"precip":0
},
{
"date":"2017-05-31",
"temp":29.5,
"precip":0
},
{
"date":"2017-06-01",
"temp":28,
"precip":0
},
{
"date":"2017-06-02",
"temp":30,
"precip":0
},
{
"date":"2017-06-03",
"temp":32.5,
"precip":0
},
{
"date":"2017-06-04",
"temp":32,
"precip":0
},
{
"date":"2017-06-05",
"temp":31.5,
"precip":0
},
{
"date":"2017-06-06",
"temp":33,
"precip":0
},
{
"date":"2017-06-07",
"temp":32.5,
"precip":0
},
{
"date":"2017-06-08",
"temp":31.5,
"precip":0
},
{
"date":"2017-06-09",
"temp":31.5,
"precip":0
},
{
"date":"2017-06-10",
"temp":29,
"precip":0
},
{
"date":"2017-06-11",
"temp":26,
"precip":0
},
{
"date":"2017-06-12",
"temp":21,
"precip":0
},
{
"date":"2017-06-13",
"temp":25,
"precip":0
},
{
"date":"2017-06-14",
"temp":30.5,
"precip":0
},
{
"date":"2017-06-15",
"temp":32,
"precip":0
},
{
"date":"2017-06-16",
"temp":34.5,
"precip":0
},
{
"date":"2017-06-17",
"temp":36,
"precip":0
},
{
"date":"2017-06-18",
"temp":36,
"precip":0
},
{
"date":"2017-06-19",
"temp":37.5,
"precip":0
},
{
"date":"2017-06-20",
"temp":39,
"precip":0
},
{
"date":"2017-06-21",
"temp":38,
"precip":0
},
{
"date":"2017-06-22",
"temp":37.5,
"precip":0
},
{
"date":"2017-06-23",
"temp":37,
"precip":0
},
{
"date":"2017-06-24",
"temp":37.5,
"precip":0
},
{
"date":"2017-06-25",
"temp":37,
"precip":0
},
{
"date":"2017-06-26",
"temp":36.5,
"precip":0
},
{
"date":"2017-06-27",
"temp":34,
"precip":0
},
{
"date":"2017-06-28",
"temp":34,
"precip":0
},
{
"date":"2017-06-29",
"temp":37.5,
"precip":0
},
{
"date":"2017-06-30",
"temp":35,
"precip":0
},
{
"date":"2017-07-01",
"temp":37.5,
"precip":0
},
{
"date":"2017-07-02",
"temp":35.5,
"precip":0
},
{
"date":"2017-07-03",
"temp":36.5,
"precip":0
},
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