Error Bars
Documentation
If your data contains an error or measurement uncertainty, you can indicate a confidential interval on the Chart using error bars. To configure them, use the fields of the series’ valueErrorBar object. In this example, error bars indicate a range of average temperatures (on the upper pane) and humidity (on the lower pane) for a specific month.
www.weatherbase.com
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$(function(){
$("#chart").dxChart({
dataSource: dataSource,
commonSeriesSettings: {
argumentField: "month",
},
panes: [{
name: "top"
}, {
name: "bottom"
}],
defaultPane: "bottom",
series:[{
pane: "top",
valueField: "avgT",
name: "Average Temperature, °C",
valueErrorBar: {
lowValueField: "avgLowT",
highValueField: "avgHighT",
lineWidth: 1,
opacity: 0.8
}
}, {
pane: "bottom",
valueField: "avgH",
type: "bar",
name: "Average Humidity, %",
valueErrorBar: {
type: "fixed",
value: 3,
lineWidth: 1
}
}],
argumentAxis: {
label: {
displayMode: "stagger"
}
},
"export": {
enabled: true
},
valueAxis: [{
pane: "top",
grid: {
visible: true
},
title: {
text: "Temperature, °C"
}
}, {
tickInterval: 50,
pane: "bottom",
grid: {
visible: true
},
title: {
text: "Humidity, %"
}
}],
tooltip: {
enabled: true,
customizeTooltip: function (arg) {
return {
text: arg.seriesName + ": " + arg.value + " ( range: " + arg.lowErrorValue + " - " + arg.highErrorValue + ")"
};
}
},
legend: {
verticalAlignment: "bottom",
horizontalAlignment: "center"
},
title: {
text: "Weather in Los Angeles, California"
}
});
});
<!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/19.2.4/css/dx.common.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/19.2.4/css/dx.light.css" />
<script src="https://cdn3.devexpress.com/jslib/19.2.4/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"></div>
</div>
</body>
</html>
#chart {
height: 440px;
}
var dataSource = [{
month: "January",
avgT: 14.1,
avgLowT: 9.1,
avgHighT: 19.1,
avgH: 70
}, {
month: "February",
avgT: 14.7,
avgLowT: 9.8,
avgHighT: 19.6,
avgH: 74
}, {
month: "March",
avgT: 15.6,
avgLowT: 10.6,
avgHighT: 20.4,
avgH: 79
}, {
month: "April",
avgT: 16.8,
avgLowT: 11.9,
avgHighT: 21.7,
avgH: 80
}, {
month: "May",
avgT: 18.2,
avgLowT: 13.6,
avgHighT: 22.7,
avgH: 83
}, {
month: "June",
avgT: 20.2,
avgLowT: 15.4,
avgHighT: 25,
avgH: 85
}, {
month: "July",
avgT: 22.6,
avgLowT: 17.3,
avgHighT: 27.9,
avgH: 86
}, {
month: "August",
avgT: 23,
avgLowT: 17.7,
avgHighT: 28.4,
avgH: 86
}, {
month: "September",
avgT: 22.3,
avgLowT: 17,
avgHighT: 27.7,
avgH: 83
}, {
month: "October",
avgT: 20.1,
avgLowT: 14.8,
avgHighT: 25.3,
avgH: 79
}, {
month: "November",
avgT: 17.2,
avgLowT: 11.8,
avgHighT: 22.7,
avgH: 72
}, {
month: "December",
avgT: 14.6,
avgLowT: 9.5,
avgHighT: 19.7,
avgH: 68
}];