Line Chart in EJ2 TypeScript control

13 Dec 202424 minutes to read

Line

To render a line series in your chart, you need to follow a few steps to configure it correctly. Here’s a concise guide on how to do this:

Set the series type: Define the series type as Line in your chart configuration. This indicates that the data should be represented as a line chart, which is ideal for visualizing trends over time or across categories.
Inject the LineSeries module: Use the Chart.Inject(LineSeries) method to inject the LineSeries module into your chart. This step is essential, as it ensures that the necessary functionalities for rendering line series are available in your chart.

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

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
        title: 'Month'
    },
    primaryYAxis: {
        title: 'Sales count'
    },
    series: [{
        dataSource: lineData,
        xName: 'month', yName: 'sales',
        //Series type as line
        type: 'Line'
    }],
    title: 'Monthly Sales Comparison'
}, '#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>
export let lineData: Object[] = [
    { month: 'Jan', sales: 35 },
    { month: 'Feb', sales: 28 },
    { month: 'Mar', sales: 34 },
    { month: 'Apr', sales: 32 },
    { month: 'May', sales: 40 },
    { month: 'Jun', sales: 32 },
    { month: 'Jul', sales: 35 },
    { month: 'Aug', sales: 55 },
    { month: 'Sep', sales: 38 },
    { month: 'Oct', sales: 30 },
    { month: 'Nov', sales: 25 },
    { month: 'Dec', sales: 32 }
];

Binding data with series

You can bind data to the chart using the dataSource property within the series configuration. This allows you to connect a JSON dataset or remote data to your chart. To display the data correctly, map the fields from the data to the chart series xName and yName properties.

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

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
        title: 'Month'
    },
    primaryYAxis: {
        title: 'Sales count'
    },
    series: [{
        dataSource: lineData,
        xName: 'month', yName: 'sales',
        type: 'Line'
    }],
    title: 'Monthly Sales Comparison'
}, '#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>
export let lineData: Object[] = [
    { month: 'Jan', sales: 35 },
    { month: 'Feb', sales: 28 },
    { month: 'Mar', sales: 34 },
    { month: 'Apr', sales: 32 },
    { month: 'May', sales: 40 },
    { month: 'Jun', sales: 32 },
    { month: 'Jul', sales: 35 },
    { month: 'Aug', sales: 55 },
    { month: 'Sep', sales: 38 },
    { month: 'Oct', sales: 30 },
    { month: 'Nov', sales: 25 },
    { month: 'Dec', sales: 32 }
];

Series customization

The following properties can be used to customize the line series.

Fill

The fill property determines the color applied to the series.

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

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
        title: 'Month'
    },
    primaryYAxis: {
        title: 'Sales count'
    },
    series: [{
        dataSource: lineData,
        xName: 'month', yName: 'sales',
        type: 'Line',
        fill: 'red'
    }],
    title: 'Monthly Sales Comparison'
}, '#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>
export let lineData: Object[] = [
    { month: 'Jan', sales: 35 },
    { month: 'Feb', sales: 28 },
    { month: 'Mar', sales: 34 },
    { month: 'Apr', sales: 32 },
    { month: 'May', sales: 40 },
    { month: 'Jun', sales: 32 },
    { month: 'Jul', sales: 35 },
    { month: 'Aug', sales: 55 },
    { month: 'Sep', sales: 38 },
    { month: 'Oct', sales: 30 },
    { month: 'Nov', sales: 25 },
    { month: 'Dec', sales: 32 }
];

The fill property can be used to apply a gradient color to the line series. By configuring this property with gradient values, you can create a visually appealing effect in which the color transitions smoothly from one shade to another.

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

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
        title: 'Month'
    },
    primaryYAxis: {
        title: 'Sales count'
    },
    series: [{
        dataSource: lineData,
        xName: 'month', yName: 'sales',
        type: 'Line',
        fill: 'url(#gradient)'
    }],
    title: 'Monthly Sales Comparison'
}, '#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>
    <svg style="width:1px; height:1px">
        <defs>
            <linearGradient id="gradient">
                <stop offset="0%" style="stop-color:#FF0000;stop-opacity:5" />
                <stop offset="70%" style="stop-color:#00FF00;stop-opacity:5" />
            </linearGradient>
        </defs>
    </svg>
</body>

</html>
export let lineData: Object[] = [
    { month: 'Jan', sales: 35 },
    { month: 'Feb', sales: 28 },
    { month: 'Mar', sales: 34 },
    { month: 'Apr', sales: 32 },
    { month: 'May', sales: 40 },
    { month: 'Jun', sales: 32 },
    { month: 'Jul', sales: 35 },
    { month: 'Aug', sales: 55 },
    { month: 'Sep', sales: 38 },
    { month: 'Oct', sales: 30 },
    { month: 'Nov', sales: 25 },
    { month: 'Dec', sales: 32 }
];

Opacity

The opacity property specifies the transparency level of the fill. Adjusting this property allows you to control how opaque or transparent the fill color of the series appears.

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

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
        title: 'Month'
    },
    primaryYAxis: {
        title: 'Sales count'
    },
    series: [{
        dataSource: lineData,
        xName: 'month', yName: 'sales',
        type: 'Line',
        opacity: 0.5
    }],
    title: 'Monthly Sales Comparison'
}, '#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>
export let lineData: Object[] = [
    { month: 'Jan', sales: 35 },
    { month: 'Feb', sales: 28 },
    { month: 'Mar', sales: 34 },
    { month: 'Apr', sales: 32 },
    { month: 'May', sales: 40 },
    { month: 'Jun', sales: 32 },
    { month: 'Jul', sales: 35 },
    { month: 'Aug', sales: 55 },
    { month: 'Sep', sales: 38 },
    { month: 'Oct', sales: 30 },
    { month: 'Nov', sales: 25 },
    { month: 'Dec', sales: 32 }
];

Dash array

The dashArray property determines the pattern of dashes and gaps in the series.

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

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
        title: 'Month'
    },
    primaryYAxis: {
        title: 'Sales count'
    },
    series: [{
        dataSource: lineData,
        xName: 'month', yName: 'sales',
        type: 'Line',
        dashArray: '5,5'
    }],
    title: 'Monthly Sales Comparison'
}, '#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>
export let lineData: Object[] = [
    { month: 'Jan', sales: 35 },
    { month: 'Feb', sales: 28 },
    { month: 'Mar', sales: 34 },
    { month: 'Apr', sales: 32 },
    { month: 'May', sales: 40 },
    { month: 'Jun', sales: 32 },
    { month: 'Jul', sales: 35 },
    { month: 'Aug', sales: 55 },
    { month: 'Sep', sales: 38 },
    { month: 'Oct', sales: 30 },
    { month: 'Nov', sales: 25 },
    { month: 'Dec', sales: 32 }
];

Width

The width property specifies the stroke width applied to the series.

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

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
        title: 'Month'
    },
    primaryYAxis: {
        title: 'Sales count'
    },
    series: [{
        dataSource: lineData,
        xName: 'month', yName: 'sales',
        type: 'Line',
        width: 4
    }],
    title: 'Monthly Sales Comparison'
}, '#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>
export let lineData: Object[] = [
    { month: 'Jan', sales: 35 },
    { month: 'Feb', sales: 28 },
    { month: 'Mar', sales: 34 },
    { month: 'Apr', sales: 32 },
    { month: 'May', sales: 40 },
    { month: 'Jun', sales: 32 },
    { month: 'Jul', sales: 35 },
    { month: 'Aug', sales: 55 },
    { month: 'Sep', sales: 38 },
    { month: 'Oct', sales: 30 },
    { month: 'Nov', sales: 25 },
    { month: 'Dec', sales: 32 }
];

Multicolored line

To render a multicolored line series in your chart, you need to follow a few steps to configure it correctly. Here’s a concise guide on how to do this:

Set the series type: Define the series type as MultiColoredLine in your chart configuration. This specifies that the series should be rendered as a multicolored line chart, with different segments of the line having distinct colors.
Inject the MultiColoredLineSeries module: Use the Chart.Inject(MultiColoredLineSeries) method to inject the MultiColoredLineSeries module in your chart. This step is essential, as it ensures that the necessary functionalities for rendering line series are available in your chart.
Map individual colors: Utilize the pointColorMapping property to assign individual colors to each data point. This allows you to customize the color of each segment of the line based on your data.

index.ts
index.html
datasource.ts
import { Chart, Category, MultiColoredLineSeries } from '@syncfusion/ej2-charts';
import { multiColorData } from './datasource.ts';
Chart.Inject(Category, MultiColoredLineSeries);
let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
        title: 'Month'
    },
    primaryYAxis: {
        title: 'Sales count'
    },
    series: [{
        dataSource: multiColorData,
        xName: 'month', yName: 'sales',
        pointColorMapping: 'color',
        //Series type as multi-colored line
        type: 'MultiColoredLine',
        width: 3
    }],
    title: 'Monthly Sales Comparison'
}, '#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>
export let multiColorData: Object[] = [
    { month: 'Jan', sales: 35, color: '#1f77b4' },
    { month: 'Feb', sales: 28, color: '#ff7f0e' },
    { month: 'Mar', sales: 34, color: '#2ca02c' },
    { month: 'Apr', sales: 32, color: '#d62728' },
    { month: 'May', sales: 40, color: '#9467bd' },
    { month: 'Jun', sales: 32, color: '#8c564b' },
    { month: 'Jul', sales: 35, color: '#e377c2' },
    { month: 'Aug', sales: 55, color: '#7f7f7f' },
    { month: 'Sep', sales: 38, color: '#bcbd22' },
    { month: 'Oct', sales: 30, color: '#17becf' },
    { month: 'Nov', sales: 25, color: '#ff69b4' },
    { month: 'Dec', sales: 32, color: '#ff6347' }
];

Empty points

Data points with null or undefined values are considered empty. Empty data points are ignored and not plotted on the chart.

Mode

Use the mode property to define how empty or missing data points are handled in the series. The default mode for empty points is Gap.

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

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
        title: 'Month'
    },
    primaryYAxis: {
        title: 'Sales count'
    },
    series: [{
        dataSource: lineData,
        xName: 'month', yName: 'sales',
        type: 'Line',
        width: 2,
        emptyPointSettings: {
            mode: 'Zero'
        }
    }],
    title: 'Monthly Sales Comparison'
}, '#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>
export let lineData: Object[] = [
    { month: 'Jan', sales: 35 },
    { month: 'Feb', sales: 28 },
    { month: 'Mar', sales: 34 },
    { month: 'Apr', sales: null },
    { month: 'May', sales: 40 },
    { month: 'Jun', sales: 32 },
    { month: 'Jul', sales: 35 },
    { month: 'Aug', sales: undefined },
    { month: 'Sep', sales: 38 },
    { month: 'Oct', sales: 30 },
    { month: 'Nov', sales: 25 },
    { month: 'Dec', sales: 32 }
];

Fill

Use the fill property to customize the fill color of empty points in the series.

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

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
        title: 'Month'
    },
    primaryYAxis: {
        title: 'Sales count'
    },
    series: [{
        dataSource: lineData,
        xName: 'month', yName: 'sales',
        type: 'Line',
        width: 2,
        marker: { visible: true, width: 7, height: 7, isFilled: true },
        emptyPointSettings: {
            mode: 'Zero',
            fill: 'red'
        }
    }],
    title: 'Monthly Sales Comparison'
}, '#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>
export let lineData: Object[] = [
    { month: 'Jan', sales: 35 },
    { month: 'Feb', sales: 28 },
    { month: 'Mar', sales: 34 },
    { month: 'Apr', sales: null },
    { month: 'May', sales: 40 },
    { month: 'Jun', sales: 32 },
    { month: 'Jul', sales: 35 },
    { month: 'Aug', sales: undefined },
    { month: 'Sep', sales: 38 },
    { month: 'Oct', sales: 30 },
    { month: 'Nov', sales: 25 },
    { month: 'Dec', sales: 32 }
];

Border

Use the border property to customize the width and color of the border for empty points.

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

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
        title: 'Month'
    },
    primaryYAxis: {
        title: 'Sales count'
    },
    series: [{
        dataSource: lineData,
        xName: 'month', yName: 'sales',
        type: 'Line',
        width: 2,
        marker: { visible: true, width: 7, height: 7, isFilled: true },
        emptyPointSettings: {
            mode: 'Zero',
            fill: 'red',
            border: { color: 'green', width: 2 }
        }
    }],
    title: 'Monthly Sales Comparison'
}, '#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>
export let lineData: Object[] = [
    { month: 'Jan', sales: 35 },
    { month: 'Feb', sales: 28 },
    { month: 'Mar', sales: 34 },
    { month: 'Apr', sales: null },
    { month: 'May', sales: 40 },
    { month: 'Jun', sales: 32 },
    { month: 'Jul', sales: 35 },
    { month: 'Aug', sales: undefined },
    { month: 'Sep', sales: 38 },
    { month: 'Oct', sales: 30 },
    { month: 'Nov', sales: 25 },
    { month: 'Dec', sales: 32 }
];

Events

Series render

The seriesRender event allows you to customize series properties, such as data, fill, and name, before they are rendered on the chart.

index.ts
index.html
datasource.ts
import { Chart, Category, LineSeries, ISeriesRenderEventArgs } from '@syncfusion/ej2-charts';
import { lineData } from './datasource.ts';
Chart.Inject(Category, LineSeries);

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
        title: 'Month'
    },
    primaryYAxis: {
        title: 'Sales count'
    },
    series: [{
        dataSource: lineData,
        xName: 'month', yName: 'sales',
        type: 'Line',
        width: 2
    }],
    title: 'Monthly Sales Comparison',
    seriesRender: (args: ISeriesRenderEventArgs) => {
        args.fill = '#ff6347';
    }
}, '#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>
export let lineData: Object[] = [
    { month: 'Jan', sales: 35 },
    { month: 'Feb', sales: 28 },
    { month: 'Mar', sales: 34 },
    { month: 'Apr', sales: 32 },
    { month: 'May', sales: 40 },
    { month: 'Jun', sales: 32 },
    { month: 'Jul', sales: 35 },
    { month: 'Aug', sales: 55 },
    { month: 'Sep', sales: 38 },
    { month: 'Oct', sales: 30 },
    { month: 'Nov', sales: 25 },
    { month: 'Dec', sales: 32 }
];

Point render

The pointRender event allows you to customize each data point before it is rendered on the chart.

index.ts
index.html
datasource.ts
import { Chart, Category, LineSeries, IPointRenderEventArgs } from '@syncfusion/ej2-charts';
import { lineData } from './datasource.ts';
Chart.Inject(Category, LineSeries);

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
        title: 'Month'
    },
    primaryYAxis: {
        title: 'Sales count'
    },
    series: [{
        dataSource: lineData,
        xName: 'month', yName: 'sales',
        type: 'Line',
        width: 2,
        marker: { visible: true }
    }],
    title: 'Monthly Sales Comparison',
    pointRender: (args: IPointRenderEventArgs) => {
        if (args.point.index % 2 !== 0) {
            args.fill = '#ff6347';
        }
        else {
            args.fill = '#009cb8';
        }
    }
}, '#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>
export let lineData: Object[] = [
    { month: 'Jan', sales: 35 },
    { month: 'Feb', sales: 28 },
    { month: 'Mar', sales: 34 },
    { month: 'Apr', sales: 32 },
    { month: 'May', sales: 40 },
    { month: 'Jun', sales: 32 },
    { month: 'Jul', sales: 35 },
    { month: 'Aug', sales: 55 },
    { month: 'Sep', sales: 38 },
    { month: 'Oct', sales: 30 },
    { month: 'Nov', sales: 25 },
    { month: 'Dec', sales: 32 }
];