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    Doughnut Charts

    Doughnut

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    This demo illustrates the PieChart UI component with the doughnut series type, which is often used when comparing the percentage values of different point arguments within a series.

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    window.onload = function() { var viewModel = { chartOptions: { type: "doughnut", palette: "Soft Pastel", dataSource: dataSource, title: "The Population of Continents and Regions", tooltip: { enabled: true, format: "millions", customizeTooltip: function (arg) { return { text: arg.valueText + " - " + (arg.percent * 100).toFixed(2) + "%" }; } }, legend: { horizontalAlignment: "right", verticalAlignment: "top", margin: 0 }, "export": { enabled: true }, series: [{ argumentField: "region", label: { visible: true, format: "millions", connector: { visible: true } } }] } }; 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/20.2.5/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.2.5/css/dx.light.css" /> <script src="https://cdn3.devexpress.com/jslib/20.2.5/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="pie" data-bind="dxPieChart: chartOptions"></div> </div> </div> </body> </html>
    #pie { height: 440px; }
    var dataSource = [{ region: "Asia", val: 4119626293 }, { region: "Africa", val: 1012956064 }, { region: "Northern America", val: 344124520 }, { region: "Latin America and the Caribbean", val: 590946440 }, { region: "Europe", val: 727082222 }, { region: "Oceania", val: 35104756 }];