Spline Range Area Chart in JavaScript Charts

18 Nov 201824 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.

  • 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.

var splinedata = [
    { 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 }
];
var chart = new ej.charts.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://cdn.syncfusion.com/ej2/34.1.29/dist/ej2.min.js" type="text/javascript"></script>
</head>

<body>
    <div id="container">
        <div id="element"></div>
    </div>
    <script>
        var ele = document.getElementById('container');
        if (ele) {
            ele.style.visibility = "visible";
        }   
    </script>
    <script src="index.js" type="text/javascript"></script>
</body>

</html>

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.

var splinedata = [
    { 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 }
];
var chart = new ej.charts.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://cdn.syncfusion.com/ej2/34.1.29/dist/ej2.min.js" type="text/javascript"></script>
</head>

<body>
    <div id="container">
        <div id="element"></div>
    </div>
    <script>
        var ele = document.getElementById('container');
        if (ele) {
            ele.style.visibility = "visible";
        }   
    </script>
    <script src="index.js" type="text/javascript"></script>
</body>

</html>

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.

var splinedata = [
    { 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 }
];
var chart = new ej.charts.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://cdn.syncfusion.com/ej2/34.1.29/dist/ej2.min.js" type="text/javascript"></script>
</head>

<body>
    <div id="container">
        <div id="element"></div>
    </div>
    <script>
        var ele = document.getElementById('container');
        if (ele) {
            ele.style.visibility = "visible";
        }   
    </script>
    <script src="index.js" type="text/javascript"></script>
</body>

</html>

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.

var splinedata = [
    { 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 }
];
var chart = new ej.charts.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://cdn.syncfusion.com/ej2/34.1.29/dist/ej2.min.js" type="text/javascript"></script>
</head>

<body>
    <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>
    <script>
        var ele = document.getElementById('container');
        if (ele) {
            ele.style.visibility = "visible";
        }   
    </script>
    <script src="index.js" type="text/javascript"></script>
</body>

</html>

Opacity

The opacity property controls the transparency of the fill and affects how the series blends with background or overlapping series.

var splinedata = [
    { 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 }
];
var chart = new ej.charts.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://cdn.syncfusion.com/ej2/34.1.29/dist/ej2.min.js" type="text/javascript"></script>
</head>

<body>
    <div id="container">
        <div id="element"></div>
    </div>
    <script>
        var ele = document.getElementById('container');
        if (ele) {
            ele.style.visibility = "visible";
        }   
    </script>
    <script src="index.js" type="text/javascript"></script>
</body>

</html>

Border

Use the border property to configure the border width, color, and dasharray of the spline range area series.

var splinedata = [
    { 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 }
];
var chart = new ej.charts.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://cdn.syncfusion.com/ej2/34.1.29/dist/ej2.min.js" type="text/javascript"></script>
</head>

<body>
    <div id="container">
        <div id="element"></div>
    </div>
    <script>
        var ele = document.getElementById('container');
        if (ele) {
            ele.style.visibility = "visible";
        }   
    </script>
    <script src="index.js" type="text/javascript"></script>
</body>

</html>

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 control handling of empty points. Available modes: Gap, Drop, Zero, Average. The default mode is Gap.

var splinedata = [
    { 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 }
];
var chart = new ej.charts.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://cdn.syncfusion.com/ej2/34.1.29/dist/ej2.min.js" type="text/javascript"></script>
</head>

<body>
    <div id="container">
        <div id="element"></div>
    </div>
    <script>
        var ele = document.getElementById('container');
        if (ele) {
            ele.style.visibility = "visible";
        }   
    </script>
    <script src="index.js" type="text/javascript"></script>
</body>

</html>

Fill

Use the fill property to set the fill color for empty points.

var splinedata = [
    { 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 }
];
var chart = new ej.charts.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://cdn.syncfusion.com/ej2/34.1.29/dist/ej2.min.js" type="text/javascript"></script>
</head>

<body>
    <div id="container">
        <div id="element"></div>
    </div>
    <script>
        var ele = document.getElementById('container');
        if (ele) {
            ele.style.visibility = "visible";
        }   
    </script>
    <script src="index.js" type="text/javascript"></script>
</body>

</html>

Border

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

var splinedata = [
    { 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 }
];
var chart = new ej.charts.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://cdn.syncfusion.com/ej2/34.1.29/dist/ej2.min.js" type="text/javascript"></script>
</head>

<body>
    <div id="container">
        <div id="element"></div>
    </div>
    <script>
        var ele = document.getElementById('container');
        if (ele) {
            ele.style.visibility = "visible";
        }   
    </script>
    <script src="index.js" type="text/javascript"></script>
</body>

</html>

Events

Series render

The seriesRender event enables modification of series properties (for example, data, fill, or name) immediately before rendering. Use this event to adjust series appearance or to dynamically swap data sources.

var splinedata = [
    { 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 }
];
var chart = new ej.charts.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: function (args) {
        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://cdn.syncfusion.com/ej2/34.1.29/dist/ej2.min.js" type="text/javascript"></script>
</head>

<body>
    <div id="container">
        <div id="element"></div>
    </div>
    <script>
        var ele = document.getElementById('container');
        if (ele) {
            ele.style.visibility = "visible";
        }   
    </script>
    <script src="index.js" type="text/javascript"></script>
</body>

</html>

Point render

The pointRender event provides a hook to customize each data point (for example, marker shape, border, or fill) before it is drawn. Use this to apply per-point styling rules or conditional formatting.

var splinedata = [
    { 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 }
];
var chart = new ej.charts.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: function (args) {
        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://cdn.syncfusion.com/ej2/34.1.29/dist/ej2.min.js" type="text/javascript"></script>
</head>

<body>
    <div id="container">
        <div id="element"></div>
    </div>
    <script>
        var ele = document.getElementById('container');
        if (ele) {
            ele.style.visibility = "visible";
        }   
    </script>
    <script src="index.js" type="text/javascript"></script>
</body>

</html>

See also