Spline area Chart in EJ2 JavaScript Control

26 Jun 20248 minutes to read

Spline area

To render a spline area series, use series type as SplineArea and inject SplineAreaSeries module using Chart.Inject(SplineAreaSeries) method.

var chartData = [
    { x: 'Jan', y: -1 }, { x: 'Feb', y: -1 }, { x: 'Mar', y: 2 },
    { x: 'Apr', y: 8 }, { x: 'May', y: 13 }, { x: 'Jun', y: 18 },
    { x: 'Jul', y: 21 }, { x: 'Aug', y: 20 }, { x: 'Sep', y: 16 },
    { x: 'Oct', y: 10 }, { x: 'Nov', y: 4 }, { x: 'Dec', y: 0 }
];
var chart = new ej.charts.Chart({
    primaryXAxis: {
        title: 'Month',
        valueType: 'Category'
    },
    primaryYAxis: {
        minimum: -5, maximum: 35, interval: 5,
        title: 'Temperature in Celsius',
        labelFormat: '{value}C'
    },
    series:[{
        dataSource: chartData, width:2,
        xName: 'x', yName: 'y',
        name: 'London',
        // Series type as spline series
        type: 'Spline'
    }],
    title: 'Climate Graph-2012'
}, '#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/ej2/26.2.4/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.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 area series.

  • fill – Specifies the color of the area series.
  • opacity – Specifies the opacity of fill.
  • dashArray – Specifies the dashes of series.
var chartData = [
    { x: 1, y: 7 }, { x: 2, y: 5 }, { x: 3, y: 1 },
    { x: 4, y: 14 }, { x: 5, y: 1 }, { x: 6, y: 10 },
    { x: 7, y: 8 }, { x: 8, y: 6 }, { x: 9, y: 10 },
    { x: 10, y: 10 }, { x: 11, y: 16 }, { x: 12, y: 6 },
    { x: 13, y: 14 }, { x: 14, y: 7 }, { x: 15, y: 5 },
    { x: 16, y: 2 }, { x: 17, y: 14 }, { x: 18, y: 7 },
    { x: 19, y: 7 }, { x: 20, y: 10 }];
var chart = new ej.charts.Chart({
    primaryXAxis: {
        valueType: 'Double',
        title: 'Overs'
    },
    primaryYAxis: {
        title: 'Runs'
    },
    series:[{
        dataSource: chartData,
        xName: 'x', yName: 'y',
        name: 'England', type: 'SplineArea',  border: { width:2, color: 'red'}
    }],
    title: 'England - Run Rate',
    tooltip:{
        enable:true
    }

}, '#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/ej2/26.2.4/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.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