Data labels in TypeScript 3D Chart control

Data labels are fields that includes information about the sample point connected to an output. It can be added to a chart series by enabling the visible property in the dataLabel. By default, the labels will arrange smartly without overlapping.

index.ts
index.html
import { DataLabel3D, Chart3D, Category3D, Legend3D, ColumnSeries3D, Tooltip3D, Highlight3D } from '@syncfusion/ej2-charts';
Chart3D.Inject(ColumnSeries3D, Category3D, DataLabel3D, Legend3D, Tooltip3D, Highlight3D);

let chartData: Object[] = [
    { country: "USA", gold: 50, silver: 70, bronze: 45 },
    { country: "China", gold: 40, silver: 60, bronze: 55 },
    { country: "Japan", gold: 70, silver: 60, bronze: 50 },
    { country: "Australia", gold: 60, silver: 56, bronze: 40 },
    { country: "France", gold: 50, silver: 45, bronze: 35 },
    { country: "Germany", gold: 40, silver: 30, bronze: 22 },
    { country: "Italy", gold: 40, silver: 35, bronze: 37 },
    { country: "Sweden", gold: 30, silver: 25, bronze: 27 }
];
let chart: Chart3D = new Chart3D({
    primaryXAxis: {
        valueType: 'Category',
    },
    series:[{
        dataSource: chartData,
        xName: 'country', yName: 'gold',
        // Series type as column series
        type: 'Column',
        dataLabel: {
            visible: true
        }
    }],
    title: 'Olympic Medals',
    wallColor: 'transparent',
    enableRotation: true,
    rotation: 7,
    tilt: 10,
    depth: 100

}, '#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>
</head>

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

</html>

Note: To use data label feature, we need to inject DataLabel3D module using Chart3D.Inject(DataLabel3D) method.

Position

The position property is used to place the label either on Top, Middle, or Bottom.

index.ts
index.html
import { DataLabel3D, Chart3D, Category3D, Legend3D, ColumnSeries3D, Tooltip3D, Highlight3D } from '@syncfusion/ej2-charts';
Chart3D.Inject(ColumnSeries3D, Category3D, DataLabel3D, Legend3D, Tooltip3D, Highlight3D);

let chartData: Object[] = [
    { country: "USA", gold: 50, silver: 70, bronze: 45 },
    { country: "China", gold: 40, silver: 60, bronze: 55 },
    { country: "Japan", gold: 70, silver: 60, bronze: 50 },
    { country: "Australia", gold: 60, silver: 56, bronze: 40 },
    { country: "France", gold: 50, silver: 45, bronze: 35 },
    { country: "Germany", gold: 40, silver: 30, bronze: 22 },
    { country: "Italy", gold: 40, silver: 35, bronze: 37 },
    { country: "Sweden", gold: 30, silver: 25, bronze: 27 }
];
let chart: Chart3D = new Chart3D({
    primaryXAxis: {
        valueType: 'Category',
    },
    series:[{
        dataSource: chartData,
        xName: 'country', yName: 'gold',
        // Series type as column series
        type: 'Column',
        dataLabel: {
            visible: true,
            position: 'Middle'
        }
    }],
    title: 'Olympic Medals',
    wallColor: 'transparent',
    enableRotation: true,
    rotation: 7,
    tilt: 10,
    depth: 100
}, '#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>
</head>

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

</html>

Template

Label content can be formatted by using the template option. Inside the template, the placeholder text ${point.x} and ${point.y} can be added to display corresponding data points x & y value. Using template property, the data label template can be set.

index.ts
index.html
import { DataLabel3D, Chart3D, Category3D, Legend3D, ColumnSeries3D, Tooltip3D, Highlight3D } from '@syncfusion/ej2-charts';
Chart3D.Inject(ColumnSeries3D, Category3D, DataLabel3D, Legend3D, Tooltip3D, Highlight3D);

let chartData: Object[] = [
    { country: "USA", gold: 50, silver: 70, bronze: 45 },
    { country: "China", gold: 40, silver: 60, bronze: 55 },
    { country: "Japan", gold: 70, silver: 60, bronze: 50 },
    { country: "Australia", gold: 60, silver: 56, bronze: 40 },
    { country: "France", gold: 50, silver: 45, bronze: 35 },
    { country: "Germany", gold: 40, silver: 30, bronze: 22 },
    { country: "Italy", gold: 40, silver: 35, bronze: 37 },
    { country: "Sweden", gold: 30, silver: 25, bronze: 27 }
];
let chart: Chart3D = new Chart3D({
    primaryXAxis: {
        valueType: 'Category',
    },
    series:[{
        dataSource: chartData,
        xName: 'country', yName: 'gold',
        // Series type as column series
        type: 'Column',
        dataLabel: {
            visible: true,
            template:'<div style="border: 1px solid black; padding: 3px 3px 3px 3px"><div>${point.x}</div><div>${point.y}</div></div>'
        }
    }],
    title: 'Olympic Medals',
    wallColor: 'transparent',
    enableRotation: true,
    rotation: 7,
    tilt: 10,
    depth: 100
}, '#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>
</head>

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

</html>

Text mapping

Text from the data source can be mapped using the name property.

index.ts
index.html
import { DataLabel3D, Chart3D, Category3D, Legend3D, ColumnSeries3D, Tooltip3D, Highlight3D } from '@syncfusion/ej2-charts';
Chart3D.Inject(ColumnSeries3D, Category3D, DataLabel3D, Legend3D, Tooltip3D, Highlight3D);


let chart: Chart3D = new Chart3D({
    primaryXAxis: {
        valueType: 'Category',
    },
    series:[{
        dataSource: [{ x: 'Jan', y: 12, text: 'January : 12°C' }, { x: 'Feb', y: 8, text: 'February : 8°C' }, { x: 'Mar', y: 11, text: 'March : 11°C' }, { x: 'Apr', y: 6, text: 'April : 6°C' }],
        xName: 'x', yName: 'y',
        // Series type as column series
        type: 'Column',
        dataLabel: {
            visible: true,
            name: "text"
        }
    }],
    title: 'Olympic Medals',
    wallColor: 'transparent',
    enableRotation: true,
    rotation: 7,
    tilt: 10,
    depth: 100
}, '#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>
</head>

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

</html>

Format

Data label for the chart can be formatted using the format property. The global formatting options can be used as ‘n’, ‘p’, and ‘c’.

index.ts
index.html
import { DataLabel3D, Chart3D, Category3D, Legend3D, ColumnSeries3D, Tooltip3D, Highlight3D } from '@syncfusion/ej2-charts';
Chart3D.Inject(ColumnSeries3D, Category3D, DataLabel3D, Legend3D, Tooltip3D, Highlight3D);

let chartData: Object[] = [
    { country: "USA", gold: 50, silver: 70, bronze: 45 },
    { country: "China", gold: 40, silver: 60, bronze: 55 },
    { country: "Japan", gold: 70, silver: 60, bronze: 50 },
    { country: "Australia", gold: 60, silver: 56, bronze: 40 }
];
let chart: Chart3D = new Chart3D({
    primaryXAxis: {
        valueType: 'Category',
    },
    series:[{
        dataSource: chartData,
        xName: 'country', yName: 'gold',
        // Series type as column series
        type: 'Column',
        dataLabel: {
            visible: true,
            format: 'n2'
        }
    }],
    title: 'Olympic Medals',
    wallColor: 'transparent',
    enableRotation: true,
    rotation: 7,
    tilt: 10,
    depth: 100
}, '#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>
</head>

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

</html>

Value	Format	Resultant Value	Description
1000	n1	1000.0	The number is rounded to 1 decimal place.
1000	n2	1000.00	The number is rounded to 2 decimal places.
1000	n3	1000.000	The number is rounded to 3 decimal place.
0.01	p1	1.0%	The number is converted to percentage with 1 decimal place.
0.01	p2	1.00%	The number is converted to percentage with 2 decimal place.
0.01	p3	1.000%	The number is converted to percentage with 3 decimal place.
1000	c1	$1000.0	The currency symbol is appended to number and number is rounded to 1 decimal place.
1000	c2	$1000.00	The currency symbol is appended to number and number is rounded to 2 decimal place.

Margin

The margin for data label can be applied by using left, right, bottom and top properties.

index.ts
index.html
import { DataLabel3D, Chart3D, Category3D, Legend3D, ColumnSeries3D, Tooltip3D, Highlight3D } from '@syncfusion/ej2-charts';
Chart3D.Inject(ColumnSeries3D, Category3D, DataLabel3D, Legend3D, Tooltip3D, Highlight3D);

let chartData: Object[] = [
    { country: "USA", gold: 50, silver: 70, bronze: 45 },
    { country: "China", gold: 40, silver: 60, bronze: 55 },
    { country: "Japan", gold: 70, silver: 60, bronze: 50 },
    { country: "Australia", gold: 60, silver: 56, bronze: 40 }
];
let chart: Chart3D = new Chart3D({
    primaryXAxis: {
        valueType: 'Category',
    },
    series:[{
        dataSource: chartData,
        xName: 'country', yName: 'gold',
        type: 'Column',
        dataLabel: {
            visible: true,
            border:{
                width: 1,
                color : 'red'
            },
            margin:{
                left:5,
                right:5,
                top:5,
                bottom:5
            }
        }
    }],
    title: 'Olympic Medals',
    wallColor: 'transparent',
    enableRotation: true,
    rotation: 7,
    tilt: 10,
    depth: 100

}, '#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>
</head>

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

</html>

Customization

The stroke and border of data label can be customized using fill and border properties.

index.ts
index.html
import { DataLabel3D, Chart3D, Category3D, Legend3D, ColumnSeries3D, Tooltip3D, Highlight3D } from '@syncfusion/ej2-charts';
Chart3D.Inject(ColumnSeries3D, Category3D, DataLabel3D, Legend3D, Tooltip3D, Highlight3D);

let chartData: Object[] = [
    { country: "USA", gold: 50, silver: 70, bronze: 45 },
    { country: "China", gold: 40, silver: 60, bronze: 55 },
    { country: "Japan", gold: 70, silver: 60, bronze: 50 },
    { country: "Australia", gold: 60, silver: 56, bronze: 40 }
];
let chart: Chart3D = new Chart3D({
    primaryXAxis: {
        valueType: 'Category',
    },
    series:[{
        dataSource: chartData,
        xName: 'country', yName: 'gold',
        type: 'Column',
        dataLabel: {
            visible: true,
            border:{ width: 2, color : 'red'},
        }
    }],
    title: 'Olympic Medals',
    wallColor: 'transparent',
    enableRotation: true,
    rotation: 7,
    tilt: 10,
    depth: 100

}, '#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>
</head>

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

</html>

Customizing specific label

A specific label can be customized by using the textRender event. The textRender event allows you to change the label text for the point.

index.ts
index.html
import { DataLabel3D, Chart3D, Category3D, Legend3D, ColumnSeries3D, Tooltip3D, Highlight3D, I3DTextRenderEventArgs } from '@syncfusion/ej2-charts';
Chart3D.Inject(ColumnSeries3D, Category3D, DataLabel3D, Legend3D, Tooltip3D, Highlight3D);

let chartData: Object[] = [
    { country: "USA", gold: 50, silver: 70, bronze: 45 },
    { country: "China", gold: 40, silver: 60, bronze: 55 },
    { country: "Japan", gold: 70, silver: 60, bronze: 50 },
    { country: "Australia", gold: 60, silver: 56, bronze: 40 }
];
let chart: Chart3D = new Chart3D({
    textRender: (args: I3DTextRenderEventArgs) => {
        if (args.point.index === 2) {
            args.text = 'Label';
        }
        else {
            args.cancel = true;
        }
    },
    primaryXAxis: {
        valueType: 'Category',
    },
    series:[{
        dataSource: chartData,
        xName: 'country', yName: 'gold',
        type: 'Column',
        dataLabel: {
            visible: true
        }
    }],
    title: 'Olympic Medals',
    wallColor: 'transparent',
    enableRotation: true,
    rotation: 7,
    tilt: 10,
    depth: 100
}, '#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>
</head>

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

</html>

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