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Polar and Radar Charts

Discrete Data

Documentation

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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import React from 'react'; import SelectBox from 'devextreme-react/select-box'; import { PolarChart, CommonSeriesSettings, Series, Margin } from 'devextreme-react/polar-chart'; import { types, dataSource } from './data.js'; class App extends React.Component { constructor(props) { super(props); this.state = { currentType: types[0] }; this.handleChange = this.handleChange.bind(this); } render() { return ( <React.Fragment> <div className="long-title"> <h3>Average temperature in London</h3> </div> <div id="chart-demo"> <PolarChart id="radarChart" dataSource={dataSource} > <CommonSeriesSettings type={this.state.currentType} /> <Series valueField="day" name="Day" color="#ba4d51" /> <Series valueField="night" name="Night" color="#5f8b95" /> <Margin top={50} bottom={50} left={100} /> </PolarChart> <div className="center"> <div>Series Type</div>&nbsp;&nbsp; <SelectBox width={200} dataSource={types} value={this.state.currentType} onValueChanged={this.handleChange} /> </div> </div> </React.Fragment> ); } handleChange(e) { this.setState({ currentType: e.value }); } } export default App;
import React from 'react'; import ReactDOM from 'react-dom'; import App from './App.js'; ReactDOM.render( <App />, document.getElementById('app') );
<!DOCTYPE html> <html> <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" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/19.2.4/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/19.2.4/css/dx.light.css" /> <link rel="stylesheet" type="text/css" href="styles.css" /> <script src="https://unpkg.com/core-js@2.4.1/client/shim.min.js"></script> <script src="https://unpkg.com/systemjs@0.21.3/dist/system.js"></script> <script type="text/javascript" src="config.js"></script> <script type="text/javascript"> System.import('./index.js'); </script> </head> <body class="dx-viewport"> <div class="demo-container"> <div id="app"></div> </div> </body> </html>
#chart-demo { 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; }
export const types = ['scatter', 'line', 'area', 'bar', 'stackedbar']; export const 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 }];
System.config({ transpiler: 'plugin-babel', paths: { 'npm:': 'https://unpkg.com/' }, defaultExtension: 'js', map: { 'react': 'npm:react@16/umd/react.development.js', 'react-dom': 'npm:react-dom@16/umd/react-dom.development.js', 'prop-types': 'npm:prop-types/prop-types.js', 'devextreme': 'npm:devextreme@19.2', 'devextreme-react': 'npm:devextreme-react@19.2', 'jszip': 'npm:jszip@3.1.3/dist/jszip.min.js', 'quill': 'npm:quill@1.3.7/dist/quill.js', 'devexpress-diagram': 'npm:devexpress-diagram', 'devexpress-gantt': 'npm:devexpress-gantt', // SystemJS plugins 'plugin-babel': 'npm:systemjs-plugin-babel@0/plugin-babel.js', 'systemjs-babel-build': 'npm:systemjs-plugin-babel@0/systemjs-babel-browser.js' }, packages: { 'devextreme': { defaultExtension: 'js' }, 'devextreme-react': { main: 'index.js' } }, babelOptions: { sourceMaps: false, stage0: true, react: true } });