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    Area Charts

    Spline Area

    Documentation

    Spline area series, like area series, are used to clearly emphasize change in values. However, spline area series help «smooth» individual lines that connect data points. In this example, you can switch between the spline area, stacked spline area and full-stacked spline area series types. Stacked spline area series help visualize multiple series and compare the manner in which each series contributes to the total aggregate value for specific arguments. Full-stacked spline area series help compare the percentage value of multiple spline area series for each argument.

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    window.onload = function () { const currentType = ko.observable(types[0]); const viewModel = { chartOptions: { palette: 'Harmony Light', title: 'Corporations with Highest Market Value', dataSource, commonSeriesSettings: { type: currentType, argumentField: 'company', }, argumentAxis: { valueMarginsEnabled: false, }, margin: { bottom: 20, }, series: [ { valueField: 'y2005', name: '2005' }, { valueField: 'y2004', name: '2004' }, ], export: { enabled: true, }, legend: { verticalAlignment: 'bottom', horizontalAlignment: 'center', }, }, typesOptions: { dataSource: types, value: currentType, }, }; 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/21.2.5/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/21.2.5/css/dx.light.css" /> <script src="https://cdn3.devexpress.com/jslib/21.2.5/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" data-bind="dxChart: chartOptions"></div> <div class="options"> <div class="caption">Options</div> <div class="option"> <span>Series Type</span> <div data-bind="dxSelectBox: typesOptions"></div> </div> </div> </div> </div> </body> </html>
    .options { padding: 20px; background-color: rgba(191, 191, 191, 0.15); margin-top: 20px; } .option { margin-top: 10px; } .caption { font-size: 18px; font-weight: 500; } .option > span { margin-right: 10px; } .option > .dx-widget { display: inline-block; vertical-align: middle; }
    const dataSource = [{ company: 'ExxonMobil', y2005: 362.53, y2004: 277.02, }, { company: 'GeneralElectric', y2005: 348.45, y2004: 328.54, }, { company: 'Microsoft', y2005: 279.02, y2004: 297.02, }, { company: 'Citigroup', y2005: 230.93, y2004: 255.3, }, { company: 'Royal Dutch Shell plc', y2005: 203.52, y2004: 173.54, }, { company: 'Procted & Gamble', y2005: 197.12, y2004: 131.89, }]; const types = ['splinearea', 'stackedsplinearea', 'fullstackedsplinearea'];