Free Trial Buy
    Your search did not match any results.
    Bar Charts

    Customize Points and Labels

    This demo shows how you can customize individual points and labels in the Chart component.

    Customize Points

    Use the customizePoint function to change the appearance of individual series points. This function should return an object with properties that you want to change in a point configuration. This demo uses this function to color all points with values above the "High Average" in red, and points with values below the "Low Average" in blue.

    Customize Labels

    To customize the appearance of individual point labels, implement the customizeLabel function. This function should also return an object with properties that need to be changed for a certain label. This demo specifies custom labels for the red points.

    Create Constant Lines

    To create constant lines, follow the steps below:

    1. Choose a direction for the line. You can specify horizontal lines in the valueAxis object, and vertical - in the argumentAxis object.

    2. Specify the constantLines object. In this object, declare an object for each line with the properties you want to change.

    Note that it's necessary to specify the value property for the line to display correctly.

    See more Hide details
    Prev Demo Next Demo

    jQuery

    Angular

    Vue

    React

    AngularJS

    ASP.NET Core

    ASP.NET MVC

    Backend API
    Copy to CodePen
    Apply
    Reset
    $(() => { const highAverage = 77; const lowAverage = 58; $('#chart').dxChart({ dataSource, customizePoint() { if (this.value > highAverage) { return { color: '#ff7c7c', hoverStyle: { color: '#ff7c7c' } }; } if (this.value < lowAverage) { return { color: '#8c8cff', hoverStyle: { color: '#8c8cff' } }; } return null; }, customizeLabel() { if (this.value > highAverage) { return { visible: true, backgroundColor: '#ff7c7c', customizeText() { return `${this.valueText}&#176F`; }, }; } return null; }, export: { enabled: true, }, valueAxis: { visualRange: { startValue: 40, }, maxValueMargin: 0.01, label: { customizeText() { return `${this.valueText}&#176F`; }, }, constantLines: [{ label: { text: 'Low Average', }, width: 2, value: lowAverage, color: '#8c8cff', dashStyle: 'dash', }, { label: { text: 'High Average', }, width: 2, value: highAverage, color: '#ff7c7c', dashStyle: 'dash', }], }, series: [{ argumentField: 'day', valueField: 'temperature', type: 'bar', color: '#e7d19a', }], title: { text: 'Daily Temperature in May', }, legend: { visible: false, }, }); });
    <!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/3.5.1/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/22.2.6/css/dx.light.css" /> <script src="https://cdn3.devexpress.com/jslib/22.2.6/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; }
    const dataSource = [{ day: '1', temperature: 57, }, { day: '2', temperature: 58, }, { day: '3', temperature: 57, }, { day: '4', temperature: 59, }, { day: '5', temperature: 63, }, { day: '6', temperature: 63, }, { day: '7', temperature: 63, }, { day: '8', temperature: 64, }, { day: '9', temperature: 64, }, { day: '10', temperature: 64, }, { day: '11', temperature: 69, }, { day: '12', temperature: 72, }, { day: '13', temperature: 75, }, { day: '14', temperature: 78, }, { day: '15', temperature: 76, }, { day: '16', temperature: 70, }, { day: '17', temperature: 65, }, { day: '18', temperature: 65, }, { day: '19', temperature: 68, }, { day: '20', temperature: 70, }, { day: '21', temperature: 73, }, { day: '22', temperature: 73, }, { day: '23', temperature: 75, }, { day: '24', temperature: 78, }, { day: '25', temperature: 76, }, { day: '26', temperature: 76, }, { day: '27', temperature: 80, }, { day: '28', temperature: 76, }, { day: '29', temperature: 75, }, { day: '30', temperature: 75, }, { day: '31', temperature: 74, }];