Axis labels in EJ2 TypeScript Chart control

10 Oct 202524 minutes to read

Smart axis labels

When the axis labels overlap with each other, you can use labelIntersectAction property in the axis, to place them smartly.

When setting labelIntersectAction as Hide

import { Chart, Category, ColumnSeries, LineSeries } from '@syncfusion/ej2-charts';
Chart.Inject(ColumnSeries, Category, LineSeries);
let chartData: any[] = [{ x: "South Korea", y: 39.4 }, { x: "India", y: 61.3 }, { x: "Pakistan", y: 20.4 },
    { x: "Germany", y: 65.1 }, { x: "Australia", y: 15.8 }, { x: "Italy", y: 29.2 },
    { x: "United Kingdom", y: 44.6 }, { x: "Saudi Arabia", y: 9.7 }, { x: "Russia", y: 40.8 },
    { x: "Mexico", y: 31 }, { x: "Brazil", y: 75.9 }, { x: "China", y: 51.4 }];
let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
        //label intersect as hide
        labelIntersectAction: 'Hide'
    },
   series:[{
        dataSource: chartData,
        xName: 'x', yName: 'y',
        type: 'Column'
    }],

}, '#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>
</body>

</html>

When setting labelIntersectAction as Rotate45

import { Chart, Category, ColumnSeries, LineSeries } from '@syncfusion/ej2-charts';
import { smartAxisData } from './datasource.ts';
Chart.Inject(ColumnSeries, Category, LineSeries);

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
        // label intersect as 45
        labelIntersectAction: 'Rotate45'
    },
   series:[{
        dataSource: smartAxisData,
        xName: 'x', yName: 'y',
        type: 'Column'
    }],

}, '#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>
</body>

</html>

When setting labelIntersectAction as Rotate90

import { Chart, Category, ColumnSeries, LineSeries } from '@syncfusion/ej2-charts';
import { smartAxisData } from './datasource.ts';
Chart.Inject(ColumnSeries, Category, LineSeries);

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
        // label intersect as 90
        labelIntersectAction: 'Rotate90'
    },
    series:[{
        dataSource: smartAxisData,
        xName: 'x', yName: 'y',
        type: 'Column'
    }],

}, '#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>
</body>

</html>

Axis labels positioning

By default, the axis labels can be placed at outside the axis line and this also can be placed at inside the axis line using the labelPosition property.

import { Chart, ColumnSeries, Category } from '@syncfusion/ej2-charts';
import { categoryData } from './datasource.ts';
Chart.Inject(ColumnSeries, Category);

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
        // label placement as on ticks
        labelPosition: 'Inside',
    },
    series:[{
        dataSource: categoryData,
        xName: 'country', yName: 'gold',
        type: 'Column'
    }],

}, '#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>
</body>

</html>

Multilevel labels

Any number of levels of labels can be added to an axis using the multiLevelLabels property. This property can be configured using the following properties:
• Categories
• Overflow
• Alignment
• Text style
• Border

Note: To use multilevel label feature, we need to inject MultiLevelLabel using Chart.Inject(MultiLevelLabel) method.

Categories

Using the categories property, you can configure the start, end, text, and maximumTextWidth of multilevel labels.

import { Chart, ColumnSeries, Category, MultiLevelLabel } from '@syncfusion/ej2-charts';
import { categoryData, MultiLevelLabel } from './datasource.ts';
Chart.Inject(ColumnSeries, Category, MultiLevelLabel);

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
           multiLevelLabels:[{ categories: [
                        {
                            //Start and end values of the multi-level labels accepts number, date and sring values
                            start: -0.5,
                            end: 3.5,
                            //Multi-level label's text.
                            text: 'Half Yearly 1',
                            //Maximum width of the text for multi level labes
                            maximumTextWidth:50
                        },
                        { start: 3.5, end: 7.5, text: 'Half Yearly 2',maximumTextWidth:50 },
                    ]}]
    },
    series:[{
        dataSource: categoryData,
        xName: 'country', yName: 'gold',
        type: 'Column'
    }],

}, '#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>
</body>

</html>

Overflow

Using the overflow property, you can trim or wrap the multilevel labels.

import { Chart, ColumnSeries, Category, MultiLevelLabel } from '@syncfusion/ej2-charts';
import { categoryData, MultiLevelLabel } from './datasource.ts';
Chart.Inject(ColumnSeries, Category, MultiLevelLabel);

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
           multiLevelLabels:[{
               categories: [{start: -0.5, end: 3.5, text: 'Half Yearly 1', maximumTextWidth:50 },
                        { start: 3.5, end: 7.5, text: 'Half Yearly 2',maximumTextWidth:50 }],
               overflow:'Trim'
           }]
    },
    series:[{
        dataSource: categoryData,
        xName: 'country', yName: 'gold',
        type: 'Column'
    }],

}, '#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>
</body>

</html>

Alignment

The alignment property provides option to position the multilevel labels at far, center, or near.

import { Chart, ColumnSeries, Category, MultiLevelLabel } from '@syncfusion/ej2-charts';
import { categoryData, MultiLevelLabel } from './datasource.ts';
Chart.Inject(ColumnSeries, Category, MultiLevelLabel);

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
           multiLevelLabels:[{
               categories: [{start: -0.5, end: 3.5, text: 'Half Yearly 1' },
                        { start: 3.5, end: 7.5, text: 'Half Yearly 2' }],
                alignment :'Far'
           }]
    },
    series:[{
        dataSource: categoryData,
        xName: 'country', yName: 'gold',
        type: 'Column'
    }],

}, '#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>
</body>

</html>

Text customization

The textStyle property of multilevel labels provides options to customize the size, color, fontFamily, fontWeight, fontStyle, opacity, textAlignment and textOverflow.

import { Chart, ColumnSeries, Category, MultiLevelLabel } from '@syncfusion/ej2-charts';
import { categoryData, MultiLevelLabel } from './datasource.ts';
Chart.Inject(ColumnSeries, Category, MultiLevelLabel);

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
           multiLevelLabels:[{
               categories: [{start: -0.5, end: 3.5, text: 'Half Yearly 1' },
                        { start: 3.5, end: 7.5, text: 'Half Yearly 2' }],
               textStyle:{size:'18px', color:'Red'}
           }]
    },
    series:[{
        dataSource: categoryData,
        xName: 'country', yName: 'gold',
        type: 'Column'
    }],

}, '#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>
</body>

</html>

Border customization

Using the border property, you can customize the width, color, and type. The type of border are Rectangle, Brace, WithoutBorder, WithoutTopBorder, WithoutTopandBottomBorder and CurlyBrace.

import { Chart, ColumnSeries, Category, MultiLevelLabel } from '@syncfusion/ej2-charts';
import { categoryData, MultiLevelLabel } from './datasource.ts';
Chart.Inject(ColumnSeries, Category, MultiLevelLabel);

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
           multiLevelLabels:[{
               categories: [{start: -0.5, end: 3.5, text: 'Half Yearly 1' },
                        { start: 3.5, end: 7.5, text: 'Half Yearly 2' }],
               border:{type:'Brace', color:'Blue', width: 2},
           }]
    },
    series:[{
        dataSource: categoryData,
        xName: 'country', yName: 'gold',
        type: 'Column'
    }],

}, '#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>
</body>

</html>

Edge label placement

Labels with long text at the edges of an axis may appear partially in the chart. To avoid this, use edgeLabelPlacement property in axis, which moves the label inside the chart area for better appearance or hides it. By default, the edgeLabelPlacement property is set to Shift to ensure that labels are shifted inside the chart area, avoiding any overlap or coincidence.

import { Chart, ColumnSeries, Category } from '@syncfusion/ej2-charts';
import { categoryData } from './datasource.ts';
Chart.Inject(ColumnSeries, Category);

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
        //Edgelabelplacement for primary x axis
        edgeLabelPlacement: 'Shift',
    },
    series:[{
        dataSource: categoryData,
        xName: 'country', yName: 'gold',
        type: 'Column'
    }],

}, '#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>
</body>

</html>

Sorting

The chart’s data source can be sorted using the sort method of chart. The arguments that are required to pass to sort method are data of chart. The fields depend on which sorting is performed either x or y, and the isDescending with which data source values are sorted in either ascending or descending.

import {
    Chart,
    StackingColumnSeries,
    Category,
    Legend,
    Tooltip,
    sort,
  } from '@syncfusion/ej2-charts';
  import { DropDownList } from '@syncfusion/ej2-dropdowns';
  Chart.Inject(StackingColumnSeries, Category, Legend, Tooltip);
  
  let dataValues: Object[] = [
    { x: 'Asia', car: 120, trucks: 90, bike: 180, cycle: 90 },
    { x: 'Canada', car: 100, trucks: 80, bike: 90, cycle: 80 },
    { x: 'Europe', car: 80, trucks: 90, bike: 60, cycle: 50 },
    { x: 'Africa', car: 40, trucks: 20, bike: 30, cycle: 30 },
    { x: 'Mexico', car: 40, trucks: 50, bike: 80, cycle: 50 },
    { x: 'US', car: 140, trucks: 90, bike: 75, cycle: 70 },
  ];
  let chart: Chart = new Chart({
    //Initializing Primary X Axis
    primaryXAxis: {
      majorGridLines: { width: 0 },
      minorGridLines: { width: 0 },
      majorTickLines: { width: 0 },
      minorTickLines: { width: 0 },
      interval: 1,
      lineStyle: { width: 0 },
      labelIntersectAction: 'Rotate45',
      valueType: 'Category',
    },
    //Initializing Primary Y Axis
    primaryYAxis: {
      title: 'Sales',
      lineStyle: { width: 0 },
      majorTickLines: { width: 0 },
      majorGridLines: { width: 1 },
      minorGridLines: { width: 1 },
      minorTickLines: { width: 0 },
      labelFormat: '{value}K',
    },
    chartArea: {
      border: {
        width: 0,
      },
    },
    //Initializing Chart Series
    series: [
      {
        type: 'StackingColumn',
        dataSource: dataValues,
        xName: 'x',
        width: 2,
        yName: 'car',
        name: 'Car',
      },
      {
        type: 'StackingColumn',
        dataSource: dataValues,
        xName: 'x',
        width: 2,
        yName: 'trucks',
        name: 'Trucks',
      },
      {
        type: 'StackingColumn',
        dataSource: dataValues,
        xName: 'x',
        width: 2,
        yName: 'bike',
        name: 'Bike',
      },
      {
        type: 'StackingColumn',
        dataSource: dataValues,
        xName: 'x',
        width: 2,
        yName: 'cycle',
        name: 'Cycle',
      },
    ],
    //Initializing Chart title
    title: 'Vehicle Sales by Region',
    //Initializing User Interaction Tooltip
    tooltip: {
      enable: true,
      enableHighlight: true,
    }
  });
  chart.appendTo('#element');
  let sortMode: DropDownList = new DropDownList({
    index: 0,
    placeholder: 'Select Range Bar Color',
    width: 120,
    change: () => {
      sortDataSource(sortMode.value + '');
    },
  });
  sortMode.appendTo('#sortMode');
  document.getElementById('decending').onchange = () => {
    sortDataSource(sortMode.value + '');
  };
  function sortDataSource(value: string): void {
    let element: HTMLInputElement = document.getElementById(
      'decending'
    ) as HTMLInputElement;
    let isDecending: boolean = element.checked;
    element.disabled = false;
    let sortData: Object[];
    if (value === 'X') {
      sortData = sort(dataValues, ['x'], isDecending);
    } else if (value === 'Y') {
      sortData = sort(
        dataValues,
        ['car', 'trucks', 'bike', 'cycle'],
        isDecending
      );
    } else {
      element.disabled = true;
      sortData = dataValues;
    }
    chart.series[0].animation.enable = false;
    chart.series[1].animation.enable = false;
    chart.series[2].animation.enable = false;
    chart.series[3].animation.enable = false;
    chart.series[0].dataSource = sortData;
    chart.series[1].dataSource = sortData;
    chart.series[2].dataSource = sortData;
    chart.series[3].dataSource = sortData;
    chart.refresh();
  }
<!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 class="stackblitz-container tailwind3">
        <div>
            <div class="col-md-8 control-section">
                <div class="content-wrapper">
                    <div id="element" style="width:92%"></div>
                </div>
            </div>
            <div class="col-md-4 property-section">
                <table id="property" title="Properties" style="width: 100%">
                    <tbody>
                        <tr style="height: 50px">
                            <td style="width: 60%">
                                <div id="checkValue">Descending:</div>
                            </td>
                            <td style="width: 40%;">
                                <div>
                                    <input id="decending" type="checkbox" disabled="" aria-labelledby="Checkbox unchecked">
                                </div>
                            </td>
                        </tr>
                        <tr style="height: 50px">
                            <td style="width: 60%">
                                <div>Sort By:</div>
                            </td>
                            <td style="width: 40%;">
                                <div>
                                    <select name="selectIndex" autocomplete="off" id="sortMode">
                                        <option value="None">None</option>
                                        <option value="X">Sort by X</option>
                                        <option value="Y">Sort by Y</option>
                                    </select>
                                </div>
                            </td>
                        </tr>
                    </tbody>
                </table>
            </div>
        </div>
    </div>
</body>

</html>

Labels customization

Border of the axis labels can be customized using width, color and type property of the axis.

import { Chart, ColumnSeries, Category } from '@syncfusion/ej2-charts';
import { categoryData } from './datasource.ts';
Chart.Inject(ColumnSeries, Category);

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
        border: { width: 1, type: 'Rectangle' , color: 'red'}
    },
    series:[{
        dataSource: categoryData,
        xName: 'country', yName: 'gold',
        type: 'Column'
    }],

}, '#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>
</body>

</html>

Customizing specific point

You can customize the specific text in the axis labels using axisLabelRender event.

import { Chart, ColumnSeries, Category, IAxisLabelRenderEventArgs } from '@syncfusion/ej2-charts';
import { categoryData } from './datasource.ts';
Chart.Inject(ColumnSeries, Category);

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
        border: { width: 1, type: 'Rectangle' , color: 'red'}
    },
    series:[{
        dataSource: categoryData,
        xName: 'country', yName: 'gold',
        type: 'Column'
    }],
    axisLabelRender : (args : IAxisLabelRenderEventArgs ) => {
        if(args.text === 'France') {
            args.labelStyle.color = 'Red';
        }
    }

}, '#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>
</body>

</html>

Line break support

Line break feature used to customize the long axis label text into multiple lines by using tag. Refer the below example in that dataSource x value contains long text, it breaks into two lines by using <br> tag.

import {
    Chart, BarSeries, DataLabel, Category,
    Tooltip
} from '@syncfusion/ej2-charts';
import { Browser } from '@syncfusion/ej2-base';
Chart.Inject(BarSeries, Category, Tooltip, DataLabel);

let chart: Chart = new Chart({
    //Initializing Primary X and YAxis
    primaryXAxis: {
        title: 'Country',
        valueType: 'Category',
        majorGridLines: { width: 0 },
        enableTrim: false,
    },

    //Initializing Primary Y Axis
    primaryYAxis:
    {
        minimum: 0,
        maximum: 800,
        labelFormat: Browser.isDevice ? '{value}' : '{value}M',
        labelStyle: {
            color: 'transparent'
        }
    },
    chartArea: {
        border: {
            width: 0
        }
    },
    //Initializing Chart Series
    series: [
        {
            type: 'Bar', tooltipMappingName: 'country',
            dataSource: [
                { x: 'Germany', y: 72, country: 'GER: 72' },
                { x: 'Russia', y: 103.1, country: 'RUS: 103.1' },
                { x: 'Brazil', y: 139.1, country: 'BRZ: 139.1' },
                { x: 'India', y: 462.1, country: 'IND: 462.1' },
                { x: 'China', y: 721.4, country: 'CHN: 721.4' },
                { x: 'United States<br>Of America', y: 286.9, country: 'USA: 286.9' },
                { x: 'Great Britain', y: 115.1, country: 'GBR: 115.1' },
                { x: 'Nigeria', y: 97.2, country: 'NGR: 97.2' },

            ],
            xName: 'x', width: 2,
            yName: 'y', marker: {
                dataLabel: {
                    visible: true,
                    position: 'Top', font: {
                        fontWeight: '600',
                        color: '#ffffff'
                    }
                }
            },
            name: 'Users'
        }
    ],
    legendSettings: {
        visible: false
    }
}, '#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>
</body>

</html>

Maximum labels

MaximumLabels property is set, then the labels will be rendered based on the count in the property per 100 pixel. If you have set range (minimum, maximum, interval) and maximumLabels, then the priority goes to range only. If you haven’t set the range, then we have considered priority to maximumLabels property.

import { DateTime, ILoadedEventArgs, ChartTheme, ScrollBar } from '@syncfusion/ej2-charts';
import { Chart, AreaSeries, Legend, Zoom } from '@syncfusion/ej2-charts';
import { Browser } from '@syncfusion/ej2-base';
Chart.Inject(AreaSeries, DateTime, Legend, Zoom, ScrollBar);

let series1: Object[] = [];
let point1: Object;
let value: number = 80;
let i: number;
for (i = 1; i < 50; i++) {
    if (Math.random() > .5) {
        value += Math.random();
    } else {
        value -= Math.random();
    }
    point1 = { x: i, y: value.toFixed(1) };
    series1.push(point1);
}
let chart: Chart = new Chart({
    //Initializing Primary X Axis
    primaryXAxis: {
        title: 'Years',
        edgeLabelPlacement: 'Shift',
        majorGridLines: { width: 0 },
        maximumLabels: 1,
    },

    //Initializing Primary Y Axis
    primaryYAxis:
    {
        title: 'Profit ($)',
        rangePadding: 'None',
        lineStyle: { width: 0 },
        majorTickLines: { width: 0 }
    },
    chartArea: { border: { width: 0 } },

    series: [
        {
            type: 'Area',
            dataSource: series1,
            name: 'Product X',
            xName: 'x',
            yName: 'y',
            fill: 'url(#gradient-chart)',
            border: { width: 0.5, color: '#00bdae' },
            animation: { enable: false }
        },
    ],
    zoomSettings:
    {
        enableMouseWheelZooming: true,
        enablePinchZooming: true,
        enableSelectionZooming: true,
        mode: 'X',
        enableScrollbar: true
    },
    title: 'Sales History of Product X',
    legendSettings: { visible: false },
}, '#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>
</body>

</html>

See Also