Polar Chart in EJ2 TypeScript control

13 Dec 202424 minutes to read

Polar chart

To render a polar 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 Polar in your chart configuration. This indicates that the data should be represented as a polar chart, which is ideal for plotting data points on a circular graph.
Inject the PolarSeries module: Use the Chart.Inject(PolarSeries) method to inject the PolarSeries module into your chart. This step is essential, as it ensures that the necessary functionalities for rendering polar series are available in your chart.

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

let chart: Chart = new Chart({
    primaryXAxis: {
        title: 'Year',
        minimum: 2005, 
        maximum: 2011, 
        interval: 1
    },
    primaryYAxis: {
        minimum: 0, 
        maximum: 40, 
        interval: 10,
        title: 'Efficiency',
        labelFormat: '{value}%'
    },
    series:[{
        dataSource: chartData,
        xName: 'x', yName: 'y',
        //Series type as polar
        type: 'Polar', width: 2,
        // Series draw type as line
        drawType: 'Line'
    }],
    title: 'Efficiency of oil-fired power production'
}, '#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 chartData: Object[] = [
    { x: 2005, y: 28 }, 
    { x: 2006, y: 25 }, 
    { x: 2007, y: 26 }, 
    { x: 2008, y: 27 },
    { x: 2009, y: 32 }, 
    { x: 2010, y: 35 }, 
    { x: 2011, y: 30 }
];

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, LineSeries, PolarSeries } from '@syncfusion/ej2-charts';
import { chartData } from './datasource.ts';
Chart.Inject(LineSeries, PolarSeries);

let chart: Chart = new Chart({
    primaryXAxis: {
        title: 'Year',
        minimum: 2005, 
        maximum: 2011, 
        interval: 1
    },
    primaryYAxis: {
        minimum: 0, 
        maximum: 40, 
        interval: 10,
        title: 'Efficiency',
        labelFormat: '{value}%'
    },
    series:[{
        dataSource: chartData,
        xName: 'x', yName: 'y',
        //Series type as polar
        type: 'Polar', width: 2,
        // Series draw type as line
        drawType: 'Line'
    }],
    title: 'Efficiency of oil-fired power production'
}, '#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 chartData: Object[] = [
    { x: 2005, y: 28 }, 
    { x: 2006, y: 25 }, 
    { x: 2007, y: 26 }, 
    { x: 2008, y: 27 },
    { x: 2009, y: 32 }, 
    { x: 2010, y: 35 }, 
    { x: 2011, y: 30 }
];

Draw types

Use the drawType property to change the series plotting type in a Polar chart to line, column, area, range column, spline, scatter, stacking area, spline area, or stacking column. The default value of drawType is Line.

Line

To render a line draw type, you need to follow a few steps to configure it correctly.

Set the series type: Define the series drawType as Line in your chart configuration. This indicates that the data should be represented as a polar line chart, with lines connecting each data point.
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 polar line series are available in your chart.

The isClosed property specifies whether to join the start and end points of a line series used in a polar chart to form a closed path. The default value of isClosed is true.

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

let chart: Chart = new Chart({
    primaryXAxis: {
        title: 'Year',
        minimum: 2005, 
        maximum: 2011, 
        interval: 1
    },
    primaryYAxis: {
        minimum: 0, 
        maximum: 40, 
        interval: 10,
        title: 'Efficiency',
        labelFormat: '{value}%'
    },
    series:[{
        dataSource: chartData,
        xName: 'x', yName: 'y',
        //Series type as polar
        type: 'Polar', width: 2,
        // Series draw type as line
        drawType: 'Line'
    }],
    title: 'Efficiency of oil-fired power production'
}, '#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 chartData: Object[] = [
    { x: 2005, y: 28 }, 
    { x: 2006, y: 25 }, 
    { x: 2007, y: 26 }, 
    { x: 2008, y: 27 },
    { x: 2009, y: 32 }, 
    { x: 2010, y: 35 }, 
    { x: 2011, y: 30 }
];

Spline

To render a spline draw type, you need to follow a few steps to configure it correctly.

Set the series type: Define the series drawType as Spline in your chart configuration. This indicates that the data should be represented as a polar spline chart, with smooth, curved lines connecting each data point.
Inject the SplineSeries module: Use the Chart.Inject(SplineSeries) method to inject the SplineSeries module into your chart. This step is essential, as it ensures that the necessary functionalities for rendering polar spline series are available in your chart.

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

let chart: Chart = new Chart({
    primaryXAxis: {
        title: 'Month',
        valueType: 'Category'
    },
    primaryYAxis: {
        minimum: -5, maximum: 25, interval: 5,
        title: 'Temperature in Celsius',
        labelFormat: '{value}°C'
    },
    series:[{
        dataSource: polarCategory,
        xName: 'x', yName: 'y',
        // Series type as Polar series
        type: 'Polar', width: 2,
        // Series draw type as spline
        drawType: '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://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 polarCategory: Object[] = [
    { 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 }
];

Area

To render an area draw type, you need to follow a few steps to configure it correctly.

Set the series type: Define the series drawType as Area in your chart configuration. This indicates that the data should be represented as a polar area chart, with filled areas below the lines connecting each data point.
Inject the AreaSeries module: Use the Chart.Inject(AreaSeries) method to inject the AreaSeries module into your chart. This step is essential, as it ensures that the necessary functionalities for rendering polar area series are available in your chart.

index.ts
index.html
datasource.ts
import { Chart, AreaSeries, PolarSeries } from '@syncfusion/ej2-charts';
import { chartData } from './datasource.ts';
Chart.Inject(AreaSeries, PolarSeries);

let chart: Chart = new Chart({
    primaryXAxis: {
        title: 'Year',
        minimum: 1900, 
        maximum: 2000, 
        interval: 10
    },
    primaryYAxis: {
        minimum: 2, maximum: 5, interval: 0.5,
        title: 'Sales Amount in Millions'
    },
    series:[{
        dataSource: chartData,
        xName: 'x', yName: 'y',
        fill:'#69D2E7',
        // Series type as polar series
        type: 'Polar',
        // Series draw type as area
        drawType: 'Area'
    }],
    title: 'Average 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 chartData: Object[] = [
    { x: 1900, y: 4 }, 
    { x: 1920, y: 3.0 },
    { x: 1940, y: 3.8 },
    { x: 1960, y: 3.4 }, 
    { x: 1980, y: 3.2 }, 
    { x: 2000, y: 3.9 }
];

Stacked area

To render a stacked area draw type, you need to follow a few steps to configure it correctly.

Set the series type: Define the series drawType as StackingArea in your chart configuration. This indicates that the data should be represented as a polar stacked area chart, with areas stacked on top of each other, displaying the cumulative value of multiple series.
Inject the StackingAreaSeries module: Use the Chart.Inject(StackingAreaSeries) method to inject the StackingAreaSeries module into your chart. This step is essential, as it ensures that the necessary functionalities for rendering polar stacked area series are available in your chart.

index.ts
index.html
datasource.ts
import { Chart, StackingAreaSeries, PolarSeries } from '@syncfusion/ej2-charts';
import { stackedData } from './datasource.ts';
Chart.Inject(StackingAreaSeries, PolarSeries);

let chart: Chart = new Chart({
    primaryXAxis: {
        title: 'Years',
        minimum: 2000,
        maximum: 2009,
        interval: 1,
        majorTickLines: { width: 0 },
        edgeLabelPlacement: 'Shift'
    },
    primaryYAxis:
    {
        title: 'Spend in Billions',
        minimum: 0,
        maximum: 4,
        interval: 1,
        majorTickLines: { width: 0 },
        labelFormat: '{value}B'
    },
    series: [
        {
            dataSource: stackedData, xName: 'x', yName: 'y',
            // Series type as polar series
            type: 'Polar', name: 'Organic',
            //Series draw type as stacked area series
            drawType: 'StackingArea'
        }, {
            dataSource: stackedData, xName: 'x', yName: 'y1',
            type: 'Polar', name: 'Fair-trade',
            drawType: 'StackingArea'
        }, {
            dataSource: stackedData, xName: 'x', yName: 'y2',
            type: 'Polar', name: 'Veg Alternatives',
            drawType: 'StackingArea'
        },
    ],
    title: 'Trend in Sales of Ethical Produce'
}, '#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 stackedData: Object[] = [
    { x: 2000, y: 0.61, y1: 0.03, y2: 0.48 }, 
    { x: 2001, y: 0.81, y1: 0.05, y2: 0.53 },
    { x: 2002, y: 0.91, y1: 0.06, y2: 0.57 },
    { x: 2003, y: 1,    y1: 0.09, y2: 0.61 }, 
    { x: 2004, y: 1.19, y1: 0.14, y2: 0.63 },
    { x: 2005, y: 1.47, y1: 0.20, y2: 0.64 },
    { x: 2006, y: 1.74, y1: 0.29, y2: 0.66 }, 
    { x: 2007, y: 1.98, y1: 0.46, y2: 0.76 },
    { x: 2008, y: 1.99, y1: 0.64, y2: 0.77 },
    { x: 2009, y: 1.70, y1: 0.75, y2: 0.55 }
];

Column

To render a column draw type, you need to follow a few steps to configure it correctly.

Set the series type: Define the series drawType as Column in your chart configuration. This indicates that the data should be represented as a polar column chart, allowing for the comparison of values across categories.
Inject the ColumnSeries module: Use the Chart.Inject(ColumnSeries) method to inject the ColumnSeries module into your chart. This step is essential, as it ensures that the necessary functionalities for rendering polar column series are available in your chart.

index.ts
index.html
datasource.ts
import { Chart, Category, PolarSeries, ColumnSeries } from '@syncfusion/ej2-charts';
import { columnData } from './datasource.ts';
Chart.Inject(Category, PolarSeries, ColumnSeries);
let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
        title: 'Countries'
    },
    primaryYAxis: {
        minimum: 0, maximum: 80,
        interval: 20, title: 'Medals'
    },
    series:[{
        dataSource: columnData,
        xName: 'country', yName: 'gold',
        // Series type as polar series
        type: 'Polar',
        // Series draw type as column series
        drawType: 'Column'
    }],
    title: 'Olympic Medals'
}, '#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 columnData: Object[] = [
    { country: "USA",       gold: 50 },
    { country: "China",     gold: 40 },
    { country: "Japan",     gold: 70 },
    { country: "Australia", gold: 60 },
    { country: "France",    gold: 50 },
    { country: "Germany",   gold: 40 },
    { country: "Italy",     gold: 40 },
    { country: "Sweden",    gold: 30 }
];

Stacked column

To render a stacked column draw type, you need to follow a few steps to configure it correctly.

Set the series type: Define the series drawType as StackingColumn in your chart configuration. This indicates that the data should be represented as a polar stacked column chart, with each column consisting of multiple segments stacked on top of each other.
Inject the StackingColumnSeries module: Use the Chart.Inject(StackingColumnSeries) method to inject the StackingColumnSeries module into your chart. This step is essential, as it ensures that the necessary functionalities for rendering polar stacked column series are available in your chart.

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

let chart: Chart = new Chart({
    series: [
        {
            dataSource: stackedData, xName: 'x', yName: 'y',
            type: 'Polar',
            //Series draw type as stacked column
            drawType: 'StackingColumn'
        }, {
            dataSource: stackedData, xName: 'x', yName: 'y1',
            type: 'Polar',
            drawType: 'StackingColumn'
        }, {
            dataSource: stackedData, xName: 'x', yName: 'y2',
            type: 'Polar',
            drawType: 'StackingColumn'

        }, {
            dataSource: stackedData, xName: 'x', yName: 'y3',
            type: 'Polar',
            drawType: 'StackingColumn'
        }
    ]
}, '#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 stackedData: object[] = [
    { x: 2000, y: 0.61, y1: 0.03, y2: 0.48},
    { x: 2001, y: 0.81, y1: 0.05, y2: 0.53 },
    { x: 2002, y: 0.91, y1: 0.06, y2: 0.57 },
    { x: 2003, y: 1,    y1: 0.09, y2: 0.61 }, 
    { x: 2004, y: 1.19, y1: 0.14, y2: 0.63 },
    { x: 2005, y: 1.47, y1: 0.20, y2: 0.64 },
    { x: 2006, y: 1.74, y1: 0.29, y2: 0.66 }, 
    { x: 2007, y: 1.98, y1: 0.46, y2: 0.76 },
    { x: 2008, y: 1.99, y1: 0.64, y2: 0.77 },
    { x: 2009, y: 1.70, y1: 0.75, y2: 0.55 }
];

Range column

To render a range column draw type, you need to follow a few steps to configure it correctly.

Set the series type: Define the series drawType as RangeColumn in your chart configuration. This indicates that the data should be represented as a polar range column chart, where each column spans a range of values.
Inject the RangeColumnSeries module: Use the Chart.Inject(RangeColumnSeries) method to inject the RangeColumnSeries module into your chart. This step is essential, as it ensures that the necessary functionalities for rendering polar range column series are available in your chart.

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

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category'
    },
    series: [
        {
            type: 'Polar', dataSource: rangeData,
            // Series draw type as range column series
            drawType: 'RangeColumn',
            xName: 'x', high: 'high', low: 'low'
        }
    ],
    title: 'Maximum and Minimum Temperature'
}, '#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 rangeData: Object[] = [
    { x: 'Jan', low: 0.7,  high: 6.1 }, 
    { x: 'Feb', low: 1.3,  high: 6.3 }, 
    { x: 'Mar', low: 1.9,  high: 8.5 },
    { x: 'Apr', low: 3.1,  high: 10.8 }, 
    { x: 'May', low: 5.7,  high: 14.40 }, 
    { x: 'Jun', low: 8.4,  high: 16.90 },
    { x: 'Jul', low: 10.6, high: 19.20 }, 
    { x: 'Aug', low: 10.5, high: 18.9 }, 
    { x: 'Sep', low: 8.5,  high: 16.1 },
    { x: 'Oct', low: 6.0,  high: 12.5 }, 
    { x: 'Nov', low: 1.5,  high: 6.9  }, 
    { x: 'Dec', low: 5.1,  high: 12.1 }
];

Scatter

To render a scatter draw type, you need to follow a few steps to configure it correctly.

Set the series type: Define the series drawType as Scatter in your chart configuration. This indicates that the data should be represented as a polar scatter chart.
Inject the ScatterSeries module: Use the Chart.Inject(ScatterSeries) method to inject the ScatterSeries module into your chart. This step is essential, as it ensures that the necessary functionalities for rendering polar scatter series are available in your chart.

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

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category'
    },
    primaryYAxis: {
        labelFormat: '{value}°C'
    },
    series: [{
        dataSource: polarCategory,
        xName: 'x', yName: 'y',
        // Series type as Polar series
        type: 'Polar',
        // Series draw type as scatter
        drawType: 'Scatter'
    }],
    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://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 polarCategory: Object[] = [
    { 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 }
];

Spline area

To render an spline area draw type, you need to follow a few steps to configure it correctly.

Set the series type: Define the series drawType as SplineArea in your chart configuration. This indicates that the data should be represented as a polar spline area chart, where the series is drawn with smooth, curved lines connecting each data point, and the area beneath the line is filled with color.
Inject the SplineAreaSeries module: Use the Chart.Inject(SplineAreaSeries) method to inject the SplineAreaSeries module into your chart. This step is essential, as it ensures that the necessary functionalities for rendering polar spline area series are available in your chart.

index.ts
index.html
datasource.ts
import { Chart, SplineAreaSeries, PolarSeries } from '@syncfusion/ej2-charts';
import { chartData } from './datasource.ts';
Chart.Inject(SplineAreaSeries, PolarSeries);

let chart: Chart = new Chart({
    primaryXAxis: {
        title: 'Year',
        minimum: 1900, 
        maximum: 2000, 
        interval: 10
    },
    primaryYAxis: {
        minimum: 2, maximum: 5, interval: 0.5,
        title: 'Sales Amount in Millions'
    },
    series:[{
        dataSource: chartData,
        xName: 'x', yName: 'y',
        fill:'#69D2E7',
        // Series type as polar series
        type: 'Polar',
        // Series draw type as area
        drawType: 'SplineArea'
    }],
    title: 'Average 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 chartData: Object[] = [
    { x: 1900, y: 4 }, 
    { x: 1920, y: 3.0 },
    { x: 1940, y: 3.8 },
    { x: 1960, y: 3.4 }, 
    { x: 1980, y: 3.2 }, 
    { x: 2000, y: 3.9 }
];

Series customization

Start angle

You can customize the start angle of the polar series using startAngle property. By default, startAngle is 0 degree.

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

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
        startAngle: 90
    },
    series:[{
        dataSource: columnData,
        xName: 'country', yName: 'gold',
        // Series type as polar series
        type: 'Polar',
        // Series draw type as column series
        drawType: 'Column'
    }],
    title: 'Olympic Medals'
}, '#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 columnData: Object[] = [
    { country: "USA",       gold: 50 },
    { country: "China",     gold: 40 },
    { country: "Japan",     gold: 70 },
    { country: "Australia", gold: 60 },
    { country: "France",    gold: 50 },
    { country: "Germany",   gold: 40 },
    { country: "Italy",     gold: 40 },
    { country: "Sweden",    gold: 30 }
];

Radius

You can customize the radius of the polar series using coefficient property. By default, coefficient is 100.

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

let chart: Chart = new Chart({
    primaryXAxis: {
        valueType: 'Category',
        coefficient: 80
    },
    series:[{
        dataSource: columnData,
        xName: 'country', yName: 'gold',
        // Series type as polar series
        type: 'Polar',
        // Series draw type as column series
        drawType: 'Column'
    }],
    title: 'Olympic Medals'
}, '#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 columnData: Object[] = [
    { country: "USA",       gold: 50 },
    { country: "China",     gold: 40 },
    { country: "Japan",     gold: 70 },
    { country: "Australia", gold: 60 },
    { country: "France",    gold: 50 },
    { country: "Germany",   gold: 40 },
    { country: "Italy",     gold: 40 },
    { country: "Sweden",    gold: 30 }
];

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, LineSeries, PolarSeries } from '@syncfusion/ej2-charts';
import { chartData } from './datasource.ts';
Chart.Inject(LineSeries, PolarSeries);

let chart: Chart = new Chart({
    primaryXAxis: {
        title: 'Year',
        minimum: 2005, 
        maximum: 2011, 
        interval: 1
    },
    primaryYAxis: {
        minimum: 0, 
        maximum: 40, 
        interval: 10,
        title: 'Efficiency',
        labelFormat: '{value}%'
    },
    series:[{
        dataSource: chartData,
        xName: 'x', yName: 'y',
        //Series type as polar
        type: 'Polar', width: 2,
        // Series draw type as line
        drawType: 'Line',
        emptyPointSettings: {
            mode: 'Zero'
        }
    }],
    title: 'Efficiency of oil-fired power production'
}, '#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 chartData: Object[] = [
    { x: 2005, y: 28 }, 
    { x: 2006, y: 25 }, 
    { x: 2007, y: 26 }, 
    { x: 2008, y: null },
    { x: 2009, y: 32 }, 
    { x: 2010, y: 35 }, 
    { x: 2011, y: 30 }
];

Fill

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

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

let chart: Chart = new Chart({
    primaryXAxis: {
        title: 'Year',
        minimum: 2005, 
        maximum: 2011, 
        interval: 1
    },
    primaryYAxis: {
        minimum: 0, 
        maximum: 40, 
        interval: 10,
        title: 'Efficiency',
        labelFormat: '{value}%'
    },
    series:[{
        dataSource: chartData,
        xName: 'x', yName: 'y',
        //Series type as polar
        type: 'Polar', width: 2,
        // Series draw type as line
        drawType: 'Line',
        marker: { visible: true, width: 7, height: 7, isFilled: true },
        emptyPointSettings: {
            mode: 'Zero',
            fill: 'red'
        }
    }],
    title: 'Efficiency of oil-fired power production'
}, '#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 chartData: Object[] = [
    { x: 2005, y: 28 }, 
    { x: 2006, y: 25 }, 
    { x: 2007, y: 26 }, 
    { x: 2008, y: null },
    { x: 2009, y: 32 }, 
    { x: 2010, y: 35 }, 
    { x: 2011, y: 30 }
];

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, LineSeries, PolarSeries } from '@syncfusion/ej2-charts';
import { chartData } from './datasource.ts';
Chart.Inject(LineSeries, PolarSeries);

let chart: Chart = new Chart({
    primaryXAxis: {
        title: 'Year',
        minimum: 2005, 
        maximum: 2011, 
        interval: 1
    },
    primaryYAxis: {
        minimum: 0, 
        maximum: 40, 
        interval: 10,
        title: 'Efficiency',
        labelFormat: '{value}%'
    },
    series:[{
        dataSource: chartData,
        xName: 'x', yName: 'y',
        //Series type as polar
        type: 'Polar', width: 2,
        // Series draw type as line
        drawType: 'Line',
        marker: { visible: true, width: 7, height: 7, isFilled: true },
        emptyPointSettings: {
            mode: 'Zero',
            fill: 'red',
            border: { width: 2, color: 'blue' }
        }
    }],
    title: 'Efficiency of oil-fired power production'
}, '#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 chartData: Object[] = [
    { x: 2005, y: 28 }, 
    { x: 2006, y: 25 }, 
    { x: 2007, y: 26 }, 
    { x: 2008, y: null },
    { x: 2009, y: 32 }, 
    { x: 2010, y: 35 }, 
    { x: 2011, y: 30 }
];

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, LineSeries, PolarSeries, ISeriesRenderEventArgs } from '@syncfusion/ej2-charts';
import { chartData } from './datasource.ts';
Chart.Inject(LineSeries, PolarSeries);

let chart: Chart = new Chart({
    primaryXAxis: {
        title: 'Year',
        minimum: 2005, 
        maximum: 2011, 
        interval: 1
    },
    primaryYAxis: {
        minimum: 0, 
        maximum: 40, 
        interval: 10,
        title: 'Efficiency',
        labelFormat: '{value}%'
    },
    series:[{
        dataSource: chartData,
        xName: 'x', yName: 'y',
        //Series type as polar
        type: 'Polar', width: 2,
        // Series draw type as line
        drawType: 'Line'
    }],
    title: 'Efficiency of oil-fired power production',
    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 chartData: Object[] = [
    { x: 2005, y: 28 }, 
    { x: 2006, y: 25 }, 
    { x: 2007, y: 26 }, 
    { x: 2008, y: 27 },
    { x: 2009, y: 32 }, 
    { x: 2010, y: 35 }, 
    { x: 2011, y: 30 }
];

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, LineSeries, PolarSeries, IPointRenderEventArgs } from '@syncfusion/ej2-charts';
import { chartData } from './datasource.ts';
Chart.Inject(LineSeries, PolarSeries);

let chart: Chart = new Chart({
    primaryXAxis: {
        title: 'Year',
        minimum: 2005, 
        maximum: 2011, 
        interval: 1
    },
    primaryYAxis: {
        minimum: 0, 
        maximum: 40, 
        interval: 10,
        title: 'Efficiency',
        labelFormat: '{value}%'
    },
    series:[{
        dataSource: chartData,
        xName: 'x', yName: 'y',
        //Series type as polar
        type: 'Polar', width: 2,
        // Series draw type as line
        drawType: 'Line',
        marker: { visible: true }
    }],
    title: 'Efficiency of oil-fired power production',
    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 chartData: Object[] = [
    { x: 2005, y: 28 }, 
    { x: 2006, y: 25 }, 
    { x: 2007, y: 26 }, 
    { x: 2008, y: 27 },
    { x: 2009, y: 32 }, 
    { x: 2010, y: 35 }, 
    { x: 2011, y: 30 }
];