Spline range area Chart in EJ2 TypeScript control

28 Sep 20237 minutes to read

Spline Range Area

The Spline Range Area Chart is used to display continuous data points as a set of splines that vary between high and low values over intervals of time and across different categories.

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

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

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
        edgeLabelPlacement: 'Shift',
        majorGridLines: { width: 0 },
    },
    primaryYAxis: {
            labelFormat: '{value}˚C',
            lineStyle: { width: 0 },
            minimum: 0,
            maximum: 40,
            majorTickLines: { width: 0 }
    },
    series: [
        {
            type: 'SplineRangeArea',
            name: 'England',
            dataSource: splinedata,
            xName: 'x', high: 'high', low: 'low',
            opacity: 0.4,
        },
        {
            type: 'SplineRangeArea',
            name: 'India',
            dataSource: splinedata,
            xName: 'x', high: 'high1', low: 'low1',
            opacity: 0.4,
        }],
}, '#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>

Series customization

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

  • fill – Specifies the color of the area series.
  • opacity – Specifies the opacity of fill.
  • dashArray – Specifies the dashes of series.
import { Chart, SplineRangeAreaSeries, DateTime } from '@syncfusion/ej2-charts';
Chart.Inject(SplineRangeAreaSeries, DateTime);

let series: Object[] = [];
let value: number = 70;
let point: Object;

for (let i: number = 1; i < 70; i++) {
    if (Math.random() > .5) {
        value += Math.random();
    } else {
        value -= Math.random();
    }
    point = { x: new Date(1930 + i, 5, i), high: value, low: value - 25 };
    series.push(point);
}

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'DateTime',
    },
    series: [
        {
            type: 'SplineRangeArea', opacity: 0.7,
            dataSource: series, fill: 'blue',
            xName: 'x', high: 'high', low: 'low',
        }],
}, '#element');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Animation</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>

See Also