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Bubble in EJ2 TypeScript Maps Component

6 Feb 202624 minutes to read

Bubbles in the Maps Component provide a visual representation of data values across geographical regions. They appear as circular or square shapes scattered over map areas, with their size proportional to the underlying data values. To enable bubbles, set the visible property of bubbleSettings to true. Then, bind the data source to the dataSource property and specify the field containing numerical data using the valuePath property.

Maps using Maps.Inject(Bubble) method.

import { Maps, Bubble } from '@syncfusion/ej2-maps';
Maps.Inject(Bubble);
let map: Maps = new Maps({ });
export let world_map = // paste the World map from WorldMap.json Geo json file.
import { world_map } from './world-map.ts';
import { Maps, Bubble } from '@syncfusion/ej2-maps';
Maps.Inject(Bubble);
let map: Maps = new Maps({
    layers: [{
        shapeData: world_map,
        shapeDataPath: 'name',
        shapePropertyPath: 'name',
        bubbleSettings: [{
            visible: true,
            minRadius: 20,
            dataSource: [
                { name: 'India', population: '38332521' },
                { name: 'New Zealand', population: '19651127' },
                { name: 'Pakistan', population: '3090416' }
            ],
            maxRadius: 40,
            valuePath: 'population'
        }]
    }]
});
map.appendTo('#element');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Maps</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="world-map.js"></script>
    <script src="usa.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' style="height: 500px; width: 700px">
        <div id='element'></div>
    </div>

</body>

</html>

Bubble shapes

The following types of shapes are available to render the bubbles in Maps.

  • Circle
  • Square

By default, bubbles render as Circle. To display square-shaped bubbles, set the bubbleType property of bubbleSettings to Square.

import { world_map } from './world-map.ts';
import { Maps, Bubble } from '@syncfusion/ej2-maps';
Maps.Inject(Bubble);
let map: Maps = new Maps({
    layers: [{
        shapeData: world_map,
        shapeDataPath: 'name',
        shapePropertyPath: 'name',
        bubbleSettings: [{
            bubbleType: 'Square',
            visible: true,
            dataSource: [
                { name: 'India', population: '38332521' },
                { name: 'Pakistan', population: '3090416' }
            ],
            valuePath: 'population'
        }]
    }]
});
map.appendTo('#element');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Maps</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="world-map.js"></script>
    <script src="usa.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' style="height: 500px; width: 700px">
        <div id='element'></div>
    </div>

</body>

</html>

Customization

The bubbleSettings provides the following properties to customize the appearance of bubbles in the Maps Component:

  • border – To customize the color, width and opacity of the border of the bubbles in Maps.
  • fill – To apply the color for bubbles in Maps.
  • opacity – To apply opacity to the bubbles in Maps.
  • animationDelay - To change the time delay in the transition for bubbles.
  • animationDuration - To change the time duration of animation for bubbles.
import { world_map } from './world-map.ts';
import { Maps, Bubble } from '@syncfusion/ej2-maps';
Maps.Inject(Bubble);
let map: Maps = new Maps({
    layers: [{
        shapeData: world_map,
        shapeDataPath: 'name',
        shapePropertyPath: 'name',
        bubbleSettings: [{
            visible: true,
            minRadius: 5,
            dataSource: [
                { name: 'India', population: '38332521' },
                { name: 'New Zealand', population: '19651127' },
                { name: 'Pakistan', population: '3090416' }
            ],
            fill: 'green',
            animationDelay: 100,
            animationDuration: 1000,
            maxRadius: 80,
            border: {
             color: 'blue',
             width: 2
            },
            opacity: 1,
            valuePath: 'population'
        }]
    }]
});
map.appendTo('#element');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Maps</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="world-map.js"></script>
    <script src="usa.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' style="height: 500px; width: 700px">
        <div id='element'></div>
    </div>

</body>

</html>

Setting color to the bubbles from the data source

The color for each bubble in the Maps can be set using the colorValuePath property of bubbleSettings. The value for the colorValuePath property is the field name from the data source of the bubbleSettings which contains the color code values.

import { world_map } from './world-map.ts';
import { Maps, Bubble } from '@syncfusion/ej2-maps';
Maps.Inject(Bubble);
let map: Maps = new Maps({
    layers: [{
        shapeData: world_map,
        shapeDataPath: 'name',
        shapePropertyPath: 'name',
        bubbleSettings: [{
            visible: true,
            minRadius: 20,
            colorValuePath: 'color',
            dataSource: [
                { name: 'India', population: '38332521', color: 'blue' },
                { name: 'New Zealand', population: '19651127', color: '#c2d2d6'  },
                { name: 'Pakistan', population: '3090416', color: '#09156d'  }
            ],
        maxRadius: 40,
        valuePath: 'population'
        }]
    }]
});
map.appendTo('#element');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Maps</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="world-map.js"></script>
    <script src="usa.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' style="height: 500px; width: 700px">
        <div id='element'></div>
    </div>

</body>

</html>

Bubble Sizing

The size of the bubbles is calculated from the values got from the valuePath property. The range for the radius of the bubbles can be modified using minRadius and maxRadius properties.

import { world_map } from './world-map.ts';
import { Maps, Bubble } from '@syncfusion/ej2-maps';
Maps.Inject(Bubble);
let map: Maps = new Maps({
    layers: [{
        shapeData: world_map,
        shapeDataPath: 'name',
        shapePropertyPath: 'name',
        bubbleSettings: [{
            visible: true,
            minRadius: 5,
            dataSource: [
                { name: 'India', population: '38332521' },
                { name: 'New Zealand', population: '19651127' },
                { name: 'Pakistan', population: '3090416' }
            ],
            maxRadius: 80,
            valuePath: 'population'
        }]
    }]
});
map.appendTo('#element');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Maps</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="world-map.js"></script>
    <script src="usa.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' style="height: 500px; width: 700px">
        <div id='element'></div>
    </div>

</body>

</html>

Multiple bubble groups

Multiple bubble groups can be added to the Maps Component by defining an array of bubble configuration objects in the bubbleSettings property. Each bubble group can be customized independently. The following example demonstrates gender-wise population ratio using two different bubble groups.

import { world_map } from './world-map.ts';
import { Maps, Bubble } from '@syncfusion/ej2-maps';
Maps.Inject(Bubble);
let map: Maps = new Maps({
    layers: [{
        shapeData: world_map,
        shapeDataPath: 'name',
        shapePropertyPath: 'name',
        bubbleSettings: [{
            visible: true,
            minRadius: 5,
            valuePath: "femaleRatio",
            colorValuePath: "femaleRatioColor",
            dataSource: [
                {
                    country: "United States", femaleRatio: 50.50442726, maleRatio: 49.49557274, femaleRatioColor: "green", maleRatioColor: "blue"
                },
                {
                    country: "India", femaleRatio: 48.18032713, maleRatio: 51.81967287, femaleRatioColor: "blue", maleRatioColor: "#c2d2d6"
                },
                {
                    country: "Oman", femaleRatio: 34.15597234, maleRatio: 65.84402766, femaleRatioColor: "#09156d", maleRatioColor: "orange"
                },
                {
                    country: "United Arab Emirates", femaleRatio: 27.59638942, maleRatio: 72.40361058, femaleRatioColor: "#09156d", maleRatioColor: "orange"
                }
            ],
            maxRadius: 20,
        },
        {
            visible: true,
            bubbleType: 'Circle',
            opacity: 0.4,
            minRadius: 15,
            valuePath: "maleRatio",
            colorValuePath: "maleRatioColor",
            dataSource: [
                {
                    country: "United States", femaleRatio: 50.50442726, maleRatio: 49.49557274, femaleRatioColor: "green", maleRatioColor: "blue"
                },
                {
                    country: "India", femaleRatio: 48.18032713, maleRatio: 51.81967287, femaleRatioColor: "blue", maleRatioColor: "#c2d2d6"
                },
                {
                    country: "Oman", femaleRatio: 34.15597234, maleRatio: 65.84402766, femaleRatioColor: "#09156d", maleRatioColor: "orange"
                },
                {
                    country: "United Arab Emirates", femaleRatio: 27.59638942, maleRatio: 72.40361058, femaleRatioColor: "#09156d", maleRatioColor: "orange"
                }
            ],
            maxRadius: 25,
        }]
    }]
});
map.appendTo('#element');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Maps</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="world-map.js"></script>
    <script src="usa.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' style="height: 500px; width: 700px">
        <div id='element'></div>
    </div>

</body>

</html>

Enable tooltip for bubble

To enable tooltips for bubbles, set the visible property of tooltipSettings to true. The tooltip content is specified using the valuePath property, which should be set to the field name from the data source that contains the tooltip values. Additionally, custom HTML content can be displayed in the tooltip using the template property.

import { world_map } from './world-map.ts';
import { Maps, Bubble, MapsTooltip } from '@syncfusion/ej2-maps';
Maps.Inject(Bubble, MapsTooltip);
let map: Maps = new Maps({
    layers: [{
        shapeData: world_map,
        shapeDataPath: 'name',
        shapePropertyPath: 'name',
        bubbleSettings: [{
            visible: true,
            minRadius: 5,
            dataSource: [
                { name: 'India', population: '38332521' },
                { name: 'New Zealand', population: '19651127' },
                { name: 'Pakistan', population: '3090416' }
            ],
            maxRadius: 80,
            valuePath: 'population',
             tooltipSettings: {
                visible: true,
                valuePath: 'population',
            },
        }]
    }]
});
map.appendTo('#element');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Maps</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="world-map.js"></script>
    <script src="usa.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' style="height: 500px; width: 700px">
        <div id='element'></div>
    </div>

</body>

</html>