Center label in EJ2 TypeScript Accumulation chart control

8 May 202311 minutes to read

Using centerLabel it is now possible to place a label at the center of a pie or doughnut chart. To configure the default text rendered on the center label for the pie and doughnut charts, use the text property in the centerLabel.

import { AccumulationChart } from '@syncfusion/ej2-charts';
import { data } from './datasource.ts';
let piechart: AccumulationChart = new AccumulationChart({
    series: [
        {
            dataSource: [   { x: 'Chrome', y: 61.3, text: 'Chrome: 61.3%' },
            { x: 'Safari', y: 24.6, text: 'Safari: 24.6%' },
            { x: 'Edge', y: 5.0, text: 'Edge: 5.0%' },
            { x: 'Samsung Internet', y: 2.7, text:  'Samsung Internet: 2.7%' },
            { x: 'Firefox', y: 2.6, text: 'Firefox: 2.6%' },
            { x: 'Others', y: 3.6, text:  'Others: 3.6%' }],
            innerRadius: '65%',
            xName: 'x',
            yName: 'y'
        }
    ],
    centerLabel:{
        text : 'Mobile<br>Browsers<br>Statistics'
    }
}, '#element');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Animation</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
     <script id="Unemployment" type="text/x-template">
      <div id='templateWrap'>
     <table style="width:100%;  border: 1px solid black;">
     <tr><th colspan="2" bgcolor="#00FFFF">Unemployment</th></tr>
     <tr><td bgcolor="#00FFFF">${x}:</td><td bgcolor="#00FFFF">${y}</td></tr>
    </table>
    </div>
  </script>
</body>

</html>

Hover text

The default text in the center label can be changed when the mouse pointer hovers over the pie and doughnut charts slice using the hoverTextFormat property.

import { AccumulationChart } from '@syncfusion/ej2-charts';
import { data } from './datasource.ts';
let piechart: AccumulationChart = new AccumulationChart({
    series: [
        {
            dataSource: [   { x: 'Chrome', y: 61.3, text: 'Chrome: 61.3%' },
            { x: 'Safari', y: 24.6, text: 'Safari: 24.6%' },
            { x: 'Edge', y: 5.0, text: 'Edge: 5.0%' },
            { x: 'Samsung Internet', y: 2.7, text:  'Samsung Internet: 2.7%' },
            { x: 'Firefox', y: 2.6, text: 'Firefox: 2.6%' },
            { x: 'Others', y: 3.6, text:  'Others: 3.6%' }],
            innerRadius: '65%',
            xName: 'x',
            yName: 'y'
        }
    ],
    centerLabel:{
        text : 'Mobile<br>Browsers<br>Statistics',
        hoverTextFormat: '${point.x} <br> Browser Share <br> ${point.y}%'
    }
}, '#element');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Animation</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
     <script id="Unemployment" type="text/x-template">
      <div id='templateWrap'>
     <table style="width:100%;  border: 1px solid black;">
     <tr><th colspan="2" bgcolor="#00FFFF">Unemployment</th></tr>
     <tr><td bgcolor="#00FFFF">${x}:</td><td bgcolor="#00FFFF">${y}</td></tr>
    </table>
    </div>
  </script>
</body>

</html>

Customization

Customize the center label text using the textStyle property.

import { AccumulationChart } from '@syncfusion/ej2-charts';
import { data } from './datasource.ts';
let piechart: AccumulationChart = new AccumulationChart({
    series: [
        {
            dataSource: [   { x: 'Chrome', y: 61.3, text: 'Chrome: 61.3%' },
            { x: 'Safari', y: 24.6, text: 'Safari: 24.6%' },
            { x: 'Edge', y: 5.0, text: 'Edge: 5.0%' },
            { x: 'Samsung Internet', y: 2.7, text:  'Samsung Internet: 2.7%' },
            { x: 'Firefox', y: 2.6, text: 'Firefox: 2.6%' },
            { x: 'Others', y: 3.6, text:  'Others: 3.6%' }],
            innerRadius: '65%',
            xName: 'x',
            yName: 'y'
        }
    ],
    centerLabel:{
        text : 'Mobile<br>Browsers<br>Statistics',
        textStyle:{
            fontWeight: '900',
            size: '15px',
            color: 'grey',
            fontFamily: 'Roboto',
            fontStyle: 'Italic'
        }
    }
}, '#element');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Animation</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
     <script id="Unemployment" type="text/x-template">
      <div id='templateWrap'>
     <table style="width:100%;  border: 1px solid black;">
     <tr><th colspan="2" bgcolor="#00FFFF">Unemployment</th></tr>
     <tr><td bgcolor="#00FFFF">${x}:</td><td bgcolor="#00FFFF">${y}</td></tr>
    </table>
    </div>
  </script>
</body>

</html>