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    Charts

    Discrete Axis Zooming and Panning

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    Discrete data support is one of many strengths of the Chart component. In this example, you can zoom data in the Chart using another DevExtreme JavaScript UI component, the RangeSelector.

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    window.onload = function () { const viewModel = { chartOptions: { palette: 'soft', title: 'The Chemical Composition of the Earth Layers', valueAxis: { label: { customizeText() { return `${this.valueText}%`; }, }, }, dataSource, series, commonSeriesSettings: { type: 'bar', ignoreEmptyPoints: true, }, legend: { border: { visible: true, }, visible: true, verticalAlignment: 'top', horizontalAlignment: 'right', orientation: 'horizontal', }, }, rangeOptions: { size: { height: 120, }, margin: { left: 10, }, scale: { minorTickCount: 1, }, dataSource, chart: { palette: 'soft', commonSeriesSettings: { type: 'bar', ignoreEmptyPoints: true, }, series, }, behavior: { callValueChanged: 'onMoving', }, onValueChanged(e) { const zoomedChart = $('#chart-demo #zoomedChart').dxChart('instance'); zoomedChart.getArgumentAxis().visualRange(e.value); }, }, }; 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/22.1.4/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/22.1.4/css/dx.light.css" /> <script src="https://cdn3.devexpress.com/jslib/22.1.4/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="zoomedChart" data-bind="dxChart: chartOptions"></div> <div data-bind="dxRangeSelector: rangeOptions"></div> </div> </div> </body> </html>
    #zoomedChart { margin-bottom: 20px; }
    const series = [{ name: 'Si', valueField: 'Si', }, { name: 'Fe', valueField: 'Fe', }, { name: 'Ni', valueField: 'Ni', }, { name: 'S', valueField: 'S', }, { name: 'O', valueField: 'O', }, { name: 'Mg', valueField: 'Mg', }, { name: 'Al', valueField: 'Al', }, { name: 'K', valueField: 'K', }, { name: 'Na', valueField: 'Na', }]; const dataSource = [{ arg: 'Inner Core', Si: 7.35, Fe: 79.39, Ni: 5.2, S: 2.3, O: 4.1, }, { arg: 'Outer Core', Si: 7.33, Fe: 78.56, Ni: 5.2, S: 2.7, O: 4.2, }, { arg: 'Lower Mantle', Si: 21.5, Fe: 5.8, O: 44.8, Mg: 22.8, Al: 2.2, Ca: 2.3, Na: 0.3, K: 0.03, }, { arg: 'Upper Mantle', Si: 28.1, Mg: 23.2, Fe: 4.3, Al: 1.2, Ca: 2.2, O: 40.3, Na: 0.2, }, { arg: 'Lower Crust', O: 46.6, Si: 27.7, Al: 8.1, Fe: 5, Ca: 3.6, Na: 2.8, K: 2.6, Mg: 1.5, }, { arg: 'Upper Crust', O: 47, Si: 29.5, Al: 8.05, Fe: 4.66, Ca: 2.96, Na: 2.5, K: 2.5, Mg: 1.87, }];