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Overview

The ASP.NET MVC 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.


Dealing with large data

Though the ASP.NET MVC 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.


Bubble heatmap chart

The ASP.NET MVC bubble heatmap chart, or the matrix bubble chart, visualizes the data using the variations in bubble attributes such as size, color, and sector.

Bubble heatmap chart in ASP.NET MVC Heatmap chart


Calendar heatmap

The ASP.NET MVC calendar heatmap visualizes time series data, with each data point representing value bound to a specific time.


Axis

Populate data in the ASP.NET MVC heatmap chart using different axis types: numeric, category, and date-time.

Numeric axis

Use a numeric axis to represent numeric data in a heatmap.

Date-time axis

Use a date-time axis to represent time series data in a heatmap. Similarly, display dates and times as axis labels with different formats.

Category axis

Use a category axis to represent non-numerical data in a heatmap and display text labels instead of numbers.


Customizable axis

The ASP.NET MVC heatmap chart allows you to customize the axis elements to make an axis more readable.

ASP.NET MVC Heatmap chart with inversed origin or inversed axes

Inversed axis

Achieve RTL layout by reversing the axis labels. This swaps the higher and lower ranges of an axis.

ASP.NET MVC Heatmap chart with axes displayed in opposed position

Opposed positions

Arrange the axes smartly by moving them to positions opposite of their default positions.

Axis intervals displayed in ASP.NET MVC Heatmap chart

Axis intervals

Set axis labels with regular intervals, hiding adjacent labels across all types of axes.

Label rotation of the ASP.NET MVC Heatmap chart axes

Axis label rotation

Rotate axis labels clockwise or counterclockwise to any desired angle.

Axes label formatting in ASP.NET MVC Heatmap chart

Axis label formatting

Customize axis label text using the available formatting options.


Heatmap cell customization

Customize the default appearance of a cell or data point using the available formatting options.

Data labels in ASP.NET MVC Heatmap chart

Data label

Toggle visibility or format the data labels to display custom text along with the cell values.

ASP.NET MVC Heatmap chart cell with customized borders

Border

Change the borders and cell spacing by customizing the border settings.


Palette

Customize the default color settings of the heatmap cells with gradient or solid custom colors.


Legend

Display additional information about data points in the ASP.NET MVC heatmap chart using a legend.

ASP.NET MVC Heatmap chart with a gradient legend and a list-type legend

Types

Choose between a gradient pointer and a list-type legend for improving data points’ readability.

Legend placement in ASP.NET MVC Heatmap chart

Positioning

Place the legend anywhere in the chart area to make it fit best on a page.

Legend paging enabled in ASP.NET MVC Heatmap chart

Paging

The control enables paging when legend items exceed the bounds. Then, each legend item can be viewed by navigating between the pages.


Empty points

Handle missed or undefined data values with empty data points.

ASP.NET MVC Heatmap chart with empty data points


Tooltip

Display additional information for the data points with tooltips on hovering the mouse over them.

Cell tooltip enabled in ASP.NET MVC Heatmap chart


Other frameworks

The ASP.NET MVC Heatmap Chart control is also available in Blazor, JavaScript, Angular, React and Vue frameworks that are built from their own TypeScript libraries.


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