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Pie Charts

Pie with Custom Labels

Documentation

This demo illustrates how the PieChart widget arranges labels in several columns. To maximize readability, the widget ensures that labels do not overlap one another.

www.nytimes.com
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import React from 'react'; import { dataSource } from './data.js'; import PieChart, { Legend, Export, Series, Label, Font, Connector } from 'devextreme-react/pie-chart'; class App extends React.Component { render() { return ( <PieChart id={'pie'} palette={'Bright'} dataSource={dataSource} title={'Olympic Medals in 2008'} > <Legend orientation={'horizontal'} itemTextPosition={'right'} horizontalAlignment={'center'} verticalAlignment={'bottom'} columnCount={4} /> <Export enabled={true} /> <Series argumentField={'country'} valueField={'medals'}> <Label visible={true} position={'columns'} customizeText={customizeText}> <Font size={16} /> <Connector visible={true} width={0.5} /> </Label> </Series> </PieChart> ); } } function customizeText(arg) { return `${arg.valueText} (${arg.percentText})`; } 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/19.1.6/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/19.1.6/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>
#pie { height: 440px; }
var dataSource = [{ country: 'USA', medals: 110 }, { country: 'China', medals: 100 }, { country: 'Russia', medals: 72 }, { country: 'Britain', medals: 47 }, { country: 'Australia', medals: 46 }, { country: 'Germany', medals: 41 }, { country: 'France', medals: 40 }, { country: 'South Korea', medals: 31 }]; export { dataSource };
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@19.1', 'devextreme-react': 'npm:devextreme-react@19.1', 'jszip': 'npm:jszip@3.1.3/dist/jszip.min.js', 'quill': 'npm:quill@1.3.6/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 } });