Discrete Data

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This example demonstrates how to visualize discrete data using the PolarChart widget. Months in the data source form discrete categories that divide the PolarChart. In addition, you can spot the difference between series types. Use the drop-down menu below the PolarChart to change the applied series type.

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$(function(){ var radarOptions = { margin: { top: 50, bottom: 50, left: 100 }, dataSource: dataSource, series: [{valueField: "day", name: "Day", color: "#ba4d51" }, { valueField: "night", name: "Night", color: "#5f8b95" }], commonSeriesSettings: { type: "scatter" } }; var radar = $("#radarChart").dxPolarChart(radarOptions).dxPolarChart("instance"); $("#radarTypes").dxSelectBox({ width: 200, dataSource: types, value: types[0], onValueChanged: function(e){ radar.option("commonSeriesSettings.type", e.value); } }); });

<!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/3.1.0/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/18.2.3/css/dx.common.css" /> <link rel="dx-theme" data-theme="generic.light" href="https://cdn3.devexpress.com/jslib/18.2.3/css/dx.light.css" /> <script src="https://cdn3.devexpress.com/jslib/18.2.3/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 class="long-title"><h3>Average temperature in London</h3></div> <div id="chart-demo"> <div id="radarChart"></div> <div class="center"> <div>Series Type</div>  <div id="radarTypes"></div> </div> </div> </div> </body> </html>

#chart-demo { width: 100%; height: 600px; } #radarChart { height: 500px; } #chart-demo > .center { text-align: center; } #chart-demo > .center > div, #chart-demo > .center > .dx-widget { display: inline-block; vertical-align: middle; } .long-title h3 { font-family: 'Segoe UI Light', 'Helvetica Neue Light', 'Segoe UI', 'Helvetica Neue', 'Trebuchet MS', Verdana; font-weight: 200; font-size: 28px; text-align: center; margin-bottom: 20px; }

var dataSource = [{ arg: "January", day: 6, night: 2 }, { arg: "February", day: 7, night: 2 }, { arg: "March", day: 10, night: 3 }, { arg: "April", day: 14, night: 5 }, { arg: "May", day: 18, night: 8 }, { arg: "June", day: 21, night: 11 }, { arg: "July", day: 22, night: 13 }, { arg: "August", day: 22, night: 13 }, { arg: "September", day: 19, night: 11 }, { arg: "October", day: 15, night: 8 }, { arg: "November", day: 10, night: 5 }, { arg: "December", day: 7, night: 3 }]; var types = ["scatter", "line", "area", "bar", "stackedbar"];