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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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<template> <dx-pie-chart id="pie" :data-source="dataSource" palette="Bright" title="Olympic Medals in 2008" > <dx-series argument-field="country" value-field="medals" > <dx-label :visible="true" :customize-text="formatLabel" position="columns" > <dx-connector :visible="true" :width="0.5" /> <dx-font :size="16"/> </dx-label> </dx-series> <dx-legend :column-count="4" orientation="horizontal" item-text-position="right" horizontal-alignment="center" vertical-alignment="bottom" /> <dx-export :enabled="true"/> </dx-pie-chart> </template> <script> import DxPieChart, { DxSeries, DxLegend, DxLabel, DxConnector, DxFont, DxExport } from 'devextreme-vue/pie-chart'; import { dataSource } from './data.js'; export default { components: { DxPieChart, DxSeries, DxLegend, DxLabel, DxConnector, DxFont, DxExport }, data() { return { dataSource }; }, methods: { formatLabel(arg) { return `${arg.valueText} (${arg.percentText})`; } } }; </script> <style> #pie { height: 440px; } </style>
import Vue from 'vue'; import App from './App.vue'; new Vue({ el: '#app', components: { App }, template: '<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/19.2.3/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/19.2.3/css/dx.light.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"> <span v-if="false">Loading...</span> </div> </div> </body> </html>
export const 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 }];
System.config({ transpiler: 'plugin-babel', paths: { 'npm:': 'https://unpkg.com/' }, map: { vue: 'npm:vue@2.6.3/dist/vue.esm.browser.js', 'vue-loader': 'npm:dx-systemjs-vue-browser@latest/index.js', 'devextreme': 'npm:devextreme@19.2', 'devextreme-vue': 'npm:devextreme-vue@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', 'plugin-babel': 'npm:systemjs-plugin-babel@0/plugin-babel.js', 'systemjs-babel-build': 'npm:systemjs-plugin-babel@0/systemjs-babel-browser.js' }, meta: { '*.vue': { loader: 'vue-loader' } }, packages: { 'devextreme-vue': { main: 'index.js' }, 'devextreme': { defaultExtension: 'js' } }, babelOptions: { sourceMaps: false, stage0: true } });