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The JavaScript HeatMap Chart 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.
Though the JavaScript HeatMap Chart can render data points using both SVG and canvas modes, it uses canvas rendering mode while displaying large volumes of data for best initial load performance and optimized memory usage.
The JavaScript bubble HeatMap Chart, or the matrix bubble chart, visualizes the data using the variations in bubble attributes such as size, color, and sector.
The JavaScript calendar HeatMap visualizes time series data, with each data point representing value bound to a specific time.
Populate data in the JavaScript HeatMap Chart using different axis types: numeric, category, and date-time.
Use a numeric axis to represent numeric data in a JavaScript Heat Map.
Use a date-time axis to represent time series data in a JavaScript Heat Map. Similarly, display dates and times as axis labels with different formats.
Use a category axis to represent non-numerical data in a HeatMap and display text labels instead of numbers.
The JavaScript HeatMap Chart allows you to customize the axis elements to make an axis more readable.
Achieve RTL layout by reversing the axis labels. This swaps the higher and lower ranges of an axis.
Arrange the axes smartly by moving them to positions opposite of their default positions.
Set axis labels with regular intervals, hiding adjacent labels across all types of axes.
Rotate axis labels clockwise or counterclockwise to any desired angle.
Customize axis label text using the available formatting options.
JS HeatMap can customize the default appearance of a cell or data point using the available formatting options.
Toggle visibility or format the data labels to display custom text along with the cell values.
Change the borders and cell spacing by customizing the border settings.
Customize the default color settings of the HeatMap cells with gradient or solid custom colors.
Color ranges allow a color to be applied to specific ranges in HeatMap cells.
Display additional information about data points in the JavaScript HeatMap Chart using a legend.
Choose between a gradient pointer and a list-type legend for improving data points’ readability.
Place the legend anywhere in the chart area to make it fit best on a page.
The control enables paging when legend items exceed the bounds. Then, each legend item can be viewed by navigating between the pages.
A legend title provides information about the HeatMap legend.
Handle missed or undefined data values with empty data points.
Display additional information for the data points with tooltips on hovering the mouse over them.
The HeatMap Chart component is also available in Blazor, React, Angular, and Vue frameworks. Check out the different HeatMap Chart platforms from the links below,
Easily get started with the JavaScript HeatMap Chart using a few simple lines of HTML and TS code, as demonstrated below. Also explore our JavaScript HeatMap Example that shows you how to render and configure the HeatMap in JavaScript.
<body>
<!--container which is going to render the Heatmap-->
<div id='element'>
</div>
</body>import { HeatMap } from '@syncfusion/ej2-heatmap';
// initialize HeatMap control
let heatmap: HeatMap = new HeatMap();
// render initialized HeatMap
heatmap.appendTo('#element');The HeatMap Chart in JavaScript Syncfusion provides the following features:
You can find our JavaScript HeatMap Chart demo here.
No, this is a commercial product and requires a paid license. However, 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.
A good place to start would be our comprehensive getting started documentation.
Documentation
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