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    Bar Charts

    Scale Breaks

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    Scale breaks allow breaking off parts of the axis to improve the readability of a chart with high amplitude values. This example demonstrates auto-calculated scale breaks. You can change the number of breaks, their style or disabled them.

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    window.onload = function () { const lineStyleValue = ko.observable(lineStyles[0]); const breaksCountValue = ko.observable(breaksCount[2]); const autoBreaksEnabledValue = ko.observable(true); const viewModel = { chartOptions: { dataSource, series: { type: 'bar', valueField: 'mass', argumentField: 'name', }, valueAxis: { visible: true, autoBreaksEnabled: autoBreaksEnabledValue, maxAutoBreakCount: breaksCountValue, breakStyle: { line: lineStyleValue, }, }, title: 'Relative Masses of the Heaviest\n Solar System Objects', legend: { visible: false, }, tooltip: { enabled: true, }, }, breaksCheckBoxOptions: { text: 'Enable Breaks', value: autoBreaksEnabledValue, }, maxCountSelectBoxOptions: { items: breaksCount, value: breaksCountValue, width: 80, }, lineStyleSelectBoxOptions: { items: lineStyles, value: lineStyleValue, width: 120, }, }; ko.applyBindings(viewModel, document.getElementById('chart-demo')); };
    <!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> <script src="https://cdnjs.cloudflare.com/ajax/libs/knockout/3.4.2/knockout-min.js"></script> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/22.1.3/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/22.1.3/css/dx.light.css" /> <script src="https://cdn3.devexpress.com/jslib/22.1.3/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" data-bind="dxChart: chartOptions"></div> <div class="options"> <div class="caption">Options</div> <div class="option"> <div class="checkbox" data-bind="dxCheckBox: breaksCheckBoxOptions"></div> </div> <div class="option center"> <span>Max Count</span> <div data-bind="dxSelectBox: maxCountSelectBoxOptions"></div> </div> <div class="option right"> <span>Style</span> <div data-bind="dxSelectBox: lineStyleSelectBoxOptions"></div> </div> </div> </div> </body> </html>
    #chart { height: 440px; } .options { padding: 20px; background-color: rgba(191, 191, 191, 0.15); margin-top: 20px; } .caption { font-size: 18px; font-weight: 500; } .option { display: inline-block; margin-right: 70px; margin-top: 5px; } .option > span { margin: 0 10px 0 0; } .checkbox { margin-top: -4px; } .option > .dx-widget { display: inline-block; vertical-align: middle; }
    const dataSource = [{ name: 'Jupiter', mass: 318, }, { name: 'Saturn', mass: 95, }, { name: 'Uranus', mass: 14.6, }, { name: 'Neptune', mass: 17.2, }, { name: 'Earth', mass: 1, }, { name: 'Venus', mass: 0.82, }, { name: 'Mars', mass: 0.11, }, { name: 'Mercury', mass: 0.06, }]; const lineStyles = ['waved', 'straight']; const breaksCount = [1, 2, 3, 4];