Spline range area Chart in EJ2 TypeScript control

14 Dec 202424 minutes to read

Spline range area

To render a spline range area 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 SplineRangeArea in your chart configuration. This indicates that the data should be represented as a spline range area chart, which is ideal for visualizing continuous data points as a set of splines that vary between high and low values over intervals of time and across different categories.
Inject the SplineRangeAreaSeries module: Use the Chart.Inject(SplineRangeAreaSeries) method to inject the SplineRangeAreaSeries module into your chart. This step is essential, as it ensures that the necessary functionalities for rendering spline range area series are available in your chart.
Provide high and low values: The SplineRangeArea series requires two y-values for each data point, you need to specify both the high and low values. The high value represents the maximum range, while the low value represents the minimum range for each data point. These values define the upper and lower boundaries of the area for each point on the chart.

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

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
        title: 'Month',
        edgeLabelPlacement: 'Shift',
        majorGridLines: { width: 0 }
    },
    primaryYAxis: {
        title: 'Temperature',
        labelFormat: '{value}˚C',
        lineStyle: { width: 0 },
        minimum: 0,
        maximum: 40,
        majorTickLines: { width: 0 }
    },
    series: [
        {
            type: 'SplineRangeArea',
            dataSource: splinedata,
            xName: 'x', high: 'high', 
            low: 'low', name: 'England'
        },
        {
            type: 'SplineRangeArea',
            dataSource: splinedata,
            xName: 'x', high: 'high1', 
            low: 'low1', name: 'India'
        }
    ],
    title: 'Monthly Temperature Range'
}, '#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 splinedata: Object[] = [
    { x: 'Jan', high: 14, low: 4,  high1: 29, low1: 19 },
    { x: 'Feb', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Mar', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Apr', high: 22, low: 12, high1: 37, low1: 27 },
    { x: 'May', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Jun', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Jul', high: 15, low: 5,  high1: 30, low1: 20 },
    { x: 'Aug', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Sep', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Oct', high: 22, low: 12, high1: 37, low1: 27 },
    { x: 'Nov', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Dec', high: 17, low: 7,  high1: 32, low1: 22 }
];

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, high, and low properties.

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

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
        title: 'Month',
        edgeLabelPlacement: 'Shift',
        majorGridLines: { width: 0 }
    },
    primaryYAxis: {
        title: 'Temperature',
        labelFormat: '{value}˚C',
        lineStyle: { width: 0 },
        minimum: 0,
        maximum: 40,
        majorTickLines: { width: 0 }
    },
    series: [
        {
            type: 'SplineRangeArea',
            dataSource: splinedata,
            xName: 'x', high: 'high', 
            low: 'low', name: 'England'
        },
        {
            type: 'SplineRangeArea',
            dataSource: splinedata,
            xName: 'x', high: 'high1', 
            low: 'low1', name: 'India'
        }
    ],
    title: 'Monthly Temperature Range'
}, '#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 splinedata: Object[] = [
    { x: 'Jan', high: 14, low: 4,  high1: 29, low1: 19 },
    { x: 'Feb', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Mar', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Apr', high: 22, low: 12, high1: 37, low1: 27 },
    { x: 'May', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Jun', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Jul', high: 15, low: 5,  high1: 30, low1: 20 },
    { x: 'Aug', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Sep', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Oct', high: 22, low: 12, high1: 37, low1: 27 },
    { x: 'Nov', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Dec', high: 17, low: 7,  high1: 32, low1: 22 }
];

Series customization

The following properties can be used to customize the spline range area series.

Fill

The fill property determines the color applied to the series.

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

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
        title: 'Month',
        edgeLabelPlacement: 'Shift',
        majorGridLines: { width: 0 }
    },
    primaryYAxis: {
        title: 'Temperature',
        labelFormat: '{value}˚C',
        lineStyle: { width: 0 },
        minimum: 0,
        maximum: 40,
        majorTickLines: { width: 0 }
    },
    series: [
        {
            type: 'SplineRangeArea',
            dataSource: splinedata,
            xName: 'x', high: 'high', 
            low: 'low', name: 'England',
            fill: 'blue'
        },
        {
            type: 'SplineRangeArea',
            dataSource: splinedata,
            xName: 'x', high: 'high1', 
            low: 'low1', name: 'India',
            fill: 'violet'
        }
    ],
    title: 'Monthly Temperature Range'
}, '#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 splinedata: Object[] = [
    { x: 'Jan', high: 14, low: 4,  high1: 29, low1: 19 },
    { x: 'Feb', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Mar', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Apr', high: 22, low: 12, high1: 37, low1: 27 },
    { x: 'May', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Jun', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Jul', high: 15, low: 5,  high1: 30, low1: 20 },
    { x: 'Aug', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Sep', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Oct', high: 22, low: 12, high1: 37, low1: 27 },
    { x: 'Nov', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Dec', high: 17, low: 7,  high1: 32, low1: 22 }
];

The fill property can be used to apply a gradient color to the spline range area 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, SplineRangeAreaSeries, Category, Legend } from '@syncfusion/ej2-charts';
import { splinedata } from './datasource.ts';
Chart.Inject(SplineRangeAreaSeries, Category, Legend);

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
        title: 'Month',
        edgeLabelPlacement: 'Shift',
        majorGridLines: { width: 0 }
    },
    primaryYAxis: {
        title: 'Temperature',
        labelFormat: '{value}˚C',
        lineStyle: { width: 0 },
        minimum: 0,
        maximum: 40,
        majorTickLines: { width: 0 }
    },
    series: [
        {
            type: 'SplineRangeArea',
            dataSource: splinedata,
            xName: 'x', high: 'high', 
            low: 'low', name: 'England',
            fill: 'url(#gradient1)'
        },
        {
            type: 'SplineRangeArea',
            dataSource: splinedata,
            xName: 'x', high: 'high1', 
            low: 'low1', name: 'India',
            fill: 'url(#gradient2)'
        }
    ],
    title: 'Monthly Temperature Range'
}, '#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="gradient1">
                <stop offset="0%" style="stop-color:coral;stop-opacity:5" />
                <stop offset="50%" style="stop-color:mediumseagreen;stop-opacity:5" />
            </linearGradient>
        </defs>
    </svg>
    
    <svg style="width:1px; height:1px">
        <defs>
            <linearGradient id="gradient2">
                <stop offset="0%" style="stop-color: darkred; stop-opacity:5" />
                <stop offset="50%" style="stop-color: darkorange; stop-opacity:5" />
            </linearGradient>
        </defs>
    </svg>
</body>

</html>
export let splinedata: Object[] = [
    { x: 'Jan', high: 14, low: 4,  high1: 29, low1: 19 },
    { x: 'Feb', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Mar', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Apr', high: 22, low: 12, high1: 37, low1: 27 },
    { x: 'May', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Jun', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Jul', high: 15, low: 5,  high1: 30, low1: 20 },
    { x: 'Aug', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Sep', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Oct', high: 22, low: 12, high1: 37, low1: 27 },
    { x: 'Nov', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Dec', high: 17, low: 7,  high1: 32, low1: 22 }
];

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

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
        title: 'Month',
        edgeLabelPlacement: 'Shift',
        majorGridLines: { width: 0 }
    },
    primaryYAxis: {
        title: 'Temperature',
        labelFormat: '{value}˚C',
        lineStyle: { width: 0 },
        minimum: 0,
        maximum: 40,
        majorTickLines: { width: 0 }
    },
    series: [
        {
            type: 'SplineRangeArea',
            dataSource: splinedata,
            xName: 'x', high: 'high', 
            low: 'low', name: 'England',
            opacity: 0.5
        },
        {
            type: 'SplineRangeArea',
            dataSource: splinedata,
            xName: 'x', high: 'high1', 
            low: 'low1', name: 'India',
            opacity: 0.5
        }
    ],
    title: 'Monthly Temperature Range'
}, '#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 splinedata: Object[] = [
    { x: 'Jan', high: 14, low: 4,  high1: 29, low1: 19 },
    { x: 'Feb', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Mar', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Apr', high: 22, low: 12, high1: 37, low1: 27 },
    { x: 'May', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Jun', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Jul', high: 15, low: 5,  high1: 30, low1: 20 },
    { x: 'Aug', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Sep', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Oct', high: 22, low: 12, high1: 37, low1: 27 },
    { x: 'Nov', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Dec', high: 17, low: 7,  high1: 32, low1: 22 }
];

Border

Use the border property to customize the width, color and dasharray of the series border.

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

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
        title: 'Month',
        edgeLabelPlacement: 'Shift',
        majorGridLines: { width: 0 }
    },
    primaryYAxis: {
        title: 'Temperature',
        labelFormat: '{value}˚C',
        lineStyle: { width: 0 },
        minimum: 0,
        maximum: 40,
        majorTickLines: { width: 0 }
    },
    series: [
        {
            type: 'SplineRangeArea',
            dataSource: splinedata,
            xName: 'x', high: 'high', 
            low: 'low', name: 'England',
            border: { width: 2, color: '#ff4251', dashArray: '5,5' }
        },
        {
            type: 'SplineRangeArea',
            dataSource: splinedata,
            xName: 'x', high: 'high1', 
            low: 'low1', name: 'India',
            border: { width: 2, color: '#4C4C4C', dashArray: '5,5' }
        }
    ],
    title: 'Monthly Temperature Range'
}, '#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 splinedata: Object[] = [
    { x: 'Jan', high: 14, low: 4,  high1: 29, low1: 19 },
    { x: 'Feb', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Mar', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Apr', high: 22, low: 12, high1: 37, low1: 27 },
    { x: 'May', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Jun', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Jul', high: 15, low: 5,  high1: 30, low1: 20 },
    { x: 'Aug', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Sep', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Oct', high: 22, low: 12, high1: 37, low1: 27 },
    { x: 'Nov', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Dec', high: 17, low: 7,  high1: 32, low1: 22 }
];

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

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
        title: 'Month',
        edgeLabelPlacement: 'Shift',
        majorGridLines: { width: 0 }
    },
    primaryYAxis: {
        title: 'Temperature',
        labelFormat: '{value}˚C',
        lineStyle: { width: 0 },
        minimum: 0,
        maximum: 40,
        majorTickLines: { width: 0 }
    },
    series: [
        {
            type: 'SplineRangeArea',
            dataSource: splinedata,
            xName: 'x', high: 'high', 
            low: 'low', name: 'England',
            emptyPointSettings: {
                mode: 'Zero'
            }
        },
        {
            type: 'SplineRangeArea',
            dataSource: splinedata,
            xName: 'x', high: 'high1', 
            low: 'low1', name: 'India',
            emptyPointSettings: {
                mode: 'Gap'
            }
        }
    ],
    title: 'Monthly Temperature Range'
}, '#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 splinedata: Object[] = [
    { x: 'Jan', high: 14, low: 4,  high1: 29, low1: 19 },
    { x: 'Feb', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Mar', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Apr', high: null, low: 12, high1: 37, low1: 27 },
    { x: 'May', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Jun', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Jul', high: 15, low: 5,  high1: 30, low1: 20 },
    { x: 'Aug', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Sep', high: 20, low: 10, high1: undefined, low1: 25 },
    { x: 'Oct', high: 22, low: 12, high1: 37, low1: 27 },
    { x: 'Nov', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Dec', high: 17, low: 7,  high1: 32, low1: 22 }
];

Fill

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

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

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
        title: 'Month',
        edgeLabelPlacement: 'Shift',
        majorGridLines: { width: 0 }
    },
    primaryYAxis: {
        title: 'Temperature',
        labelFormat: '{value}˚C',
        lineStyle: { width: 0 },
        minimum: 0,
        maximum: 40,
        majorTickLines: { width: 0 }
    },
    series: [
        {
            type: 'SplineRangeArea',
            dataSource: splinedata,
            xName: 'x', high: 'high', 
            low: 'low', name: 'England',
            marker: { visible: true, width: 7, height: 7, isFilled: true },
            emptyPointSettings: {
                mode: 'Zero', fill: 'red'
            }
        },
        {
            type: 'SplineRangeArea',
            dataSource: splinedata,
            xName: 'x', high: 'high1', 
            low: 'low1', name: 'India',
            marker: { visible: true, width: 4, height: 4, isFilled: true },
            emptyPointSettings: {
                mode: 'Gap'
            }
        }
    ],
    title: 'Monthly Temperature Range'
}, '#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 splinedata: Object[] = [
    { x: 'Jan', high: 14, low: 4,  high1: 29, low1: 19 },
    { x: 'Feb', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Mar', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Apr', high: null, low: 12, high1: 37, low1: 27 },
    { x: 'May', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Jun', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Jul', high: 15, low: 5,  high1: 30, low1: 20 },
    { x: 'Aug', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Sep', high: 20, low: 10, high1: undefined, low1: 25 },
    { x: 'Oct', high: 22, low: 12, high1: 37, low1: 27 },
    { x: 'Nov', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Dec', high: 17, low: 7,  high1: 32, low1: 22 }
];

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

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
        title: 'Month',
        edgeLabelPlacement: 'Shift',
        majorGridLines: { width: 0 }
    },
    primaryYAxis: {
        title: 'Temperature',
        labelFormat: '{value}˚C',
        lineStyle: { width: 0 },
        minimum: 0,
        maximum: 40,
        majorTickLines: { width: 0 }
    },
    series: [
        {
            type: 'SplineRangeArea',
            dataSource: splinedata,
            xName: 'x', high: 'high', 
            low: 'low', name: 'England',
            marker: { visible: true, width: 7, height: 7, isFilled: true },
            emptyPointSettings: {
                mode: 'Zero', fill: 'red', border: { width: 2, color: 'green' }
            }
        },
        {
            type: 'SplineRangeArea',
            dataSource: splinedata,
            xName: 'x', high: 'high1', 
            low: 'low1', name: 'India',
            marker: { visible: true, width: 4, height: 4, isFilled: true },
            emptyPointSettings: {
                mode: 'Gap'
            }
        }
    ],
    title: 'Monthly Temperature Range'
}, '#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 splinedata: Object[] = [
    { x: 'Jan', high: 14, low: 4,  high1: 29, low1: 19 },
    { x: 'Feb', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Mar', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Apr', high: null, low: 12, high1: 37, low1: 27 },
    { x: 'May', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Jun', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Jul', high: 15, low: 5,  high1: 30, low1: 20 },
    { x: 'Aug', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Sep', high: 20, low: 10, high1: undefined, low1: 25 },
    { x: 'Oct', high: 22, low: 12, high1: 37, low1: 27 },
    { x: 'Nov', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Dec', high: 17, low: 7,  high1: 32, low1: 22 }
];

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, SplineRangeAreaSeries, Category, Legend, ISeriesRenderEventArgs } from '@syncfusion/ej2-charts';
import { splinedata } from './datasource.ts';
Chart.Inject(SplineRangeAreaSeries, Category, Legend);

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
        title: 'Month',
        edgeLabelPlacement: 'Shift',
        majorGridLines: { width: 0 }
    },
    primaryYAxis: {
        title: 'Temperature',
        labelFormat: '{value}˚C',
        lineStyle: { width: 0 },
        minimum: 0,
        maximum: 40,
        majorTickLines: { width: 0 }
    },
    series: [
        {
            type: 'SplineRangeArea',
            dataSource: splinedata,
            xName: 'x', high: 'high', 
            low: 'low', name: 'England'
        },
        {
            type: 'SplineRangeArea',
            dataSource: splinedata,
            xName: 'x', high: 'high1', 
            low: 'low1', name: 'India'
        }
    ],
    title: 'Monthly Temperature Range',
    seriesRender: (args: ISeriesRenderEventArgs) => {
        if (args.series.index === 0) {
            args.fill = '#ff4251';
        }
        else if (args.series.index === 1) {
            args.fill = '#4C4C4C';
        }
    }
}, '#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 splinedata: Object[] = [
    { x: 'Jan', high: 14, low: 4,  high1: 29, low1: 19 },
    { x: 'Feb', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Mar', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Apr', high: 22, low: 12, high1: 37, low1: 27 },
    { x: 'May', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Jun', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Jul', high: 15, low: 5,  high1: 30, low1: 20 },
    { x: 'Aug', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Sep', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Oct', high: 22, low: 12, high1: 37, low1: 27 },
    { x: 'Nov', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Dec', high: 17, low: 7,  high1: 32, low1: 22 }
];

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, SplineRangeAreaSeries, Category, Legend, IPointRenderEventArgs } from '@syncfusion/ej2-charts';
import { splinedata } from './datasource.ts';
Chart.Inject(SplineRangeAreaSeries, Category, Legend);

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
        title: 'Month',
        edgeLabelPlacement: 'Shift',
        majorGridLines: { width: 0 }
    },
    primaryYAxis: {
        title: 'Temperature',
        labelFormat: '{value}˚C',
        lineStyle: { width: 0 },
        minimum: 0,
        maximum: 40,
        majorTickLines: { width: 0 }
    },
    series: [
        {
            type: 'SplineRangeArea',
            dataSource: splinedata,
            xName: 'x', high: 'high', 
            low: 'low', name: 'England',
            marker: { visible: true, width: 7, height: 7 }
        },
        {
            type: 'SplineRangeArea',
            dataSource: splinedata,
            xName: 'x', high: 'high1', 
            low: 'low1', name: 'India',
            marker: { visible: true, width: 7, height: 7 }
        }
    ],
    title: 'Monthly Temperature Range',
    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 splinedata: Object[] = [
    { x: 'Jan', high: 14, low: 4,  high1: 29, low1: 19 },
    { x: 'Feb', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Mar', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Apr', high: 22, low: 12, high1: 37, low1: 27 },
    { x: 'May', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Jun', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Jul', high: 15, low: 5,  high1: 30, low1: 20 },
    { x: 'Aug', high: 17, low: 7,  high1: 32, low1: 22 },
    { x: 'Sep', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Oct', high: 22, low: 12, high1: 37, low1: 27 },
    { x: 'Nov', high: 20, low: 10, high1: 35, low1: 25 },
    { x: 'Dec', high: 17, low: 7,  high1: 32, low1: 22 }
];