ej2-react-ui-components/components/heatmap

React HeatMap Component

The React HeatMap component is a graphical representation of two-dimensional data where the values are represented with gradient or solid color variations. The data points are rendered as HeatMap cells using Scalable Vector Graphics (SVG) or canvas UI rendering.

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Setup

Create a React Application

You can use create-react-app to setup applications. To create React app, use the following command.

npx create-react-app my-app --template typescript
cd my-app
npm start

Add Syncfusion HeatMap package

All Syncfusion React packages are published in the npmjs.com registry. To install the React HeatMap package, use the following command.

npm install @syncfusion/ej2-react-heatmap --save

Add HeatMap Component

In the src/App.tsx file, use the following code snippet to render the Syncfusion React HeatMap component.

import { React } from 'react';
import { HeatMapComponent } from '@syncfusion/ej2-react-heatmap';
function App() {
    let heatmapData: any[] = [
        [73, 39, 26, 39, 94, 0],
        [93, 58, 53, 38, 26, 68],
        [99, 28, 22, 4, 66, 90],
        [14, 26, 97, 69, 69, 3],
        [7, 46, 47, 47, 88, 6],
        [41, 55, 73, 23, 3, 79],
        [56, 69, 21, 86, 3, 33],
        [45, 7, 53, 81, 95, 79],
        [60, 77, 74, 68, 88, 51],
        [25, 25, 10, 12, 78, 14],
        [25, 56, 55, 58, 12, 82],
        [74, 33, 88, 23, 86, 59]];
   return (<HeatMapComponent dataSource={heatmapData}></HeatMapComponent>);
}
export default App;

Supported frameworks

HeatMap component is also offered in the following list of frameworks.

JavaScript	Angular	Vue	ASP.NET Core	ASP.NET MVC

Showcase samples

• Annual Flight Traffic Report - Live Demo
• Loan Calculator - Source, Live Demo
• Fitness Tracker - Source, Live Demo

Key features

• Data binding: Binding data in JSON and two-dimensional array formats is supported.
• Axis types: Supports three different types of axes to populate the data, namely Numerical, Categorical and DateTime.
• Axis: Supports inverted axis, opposed position and axis intervals.
• Rendering modes: Supports automatic switching between SVG and Canvas rendering modes based on the data source length.
• Palette: Different colors are provided for different value ranges to be used in the cells.
• Legend: Summarizes the information for the colors which represents each values in HeatMap.
• Tooltip: Provides information about the cell values on hover.
• Selection: Supports selecting the cells that will be the center of attraction.
• Templates: Templates can be used to create custom user experience in the tooltip of the heatmap.

Support

Product support is available through the following mediums.

• Support ticket - Guaranteed Response in 24 hours | Unlimited tickets | Holiday support
• Community forum
• GitHub issues
• Request feature or report bug
• Live chat

Changelog

Check the changelog here. Get minor improvements and bug fixes every week to stay up to date with frequent updates.

License and copyright

This is a commercial product and requires a paid license for possession or use. Syncfusion’s licensed software, including this component, is subject to the terms and conditions of Syncfusion's EULA. To acquire a license for 80+ React UI components, you can purchase or start a free 30-day trial.

A free community license is also available for companies and individuals whose organizations have less than $1 million USD in annual gross revenue and five or fewer developers.

See LICENSE FILE for more info.

© Copyright 2022 Syncfusion, Inc. All Rights Reserved. The Syncfusion Essential Studio license and copyright applies to this distribution.