Radzen Blazor Chart with heatmap series

A heatmap series colors a grid of X/Y cells by value, turning density or intensity into a field of color - good for spotting hotspots across two numeric dimensions.

When to use which?

Use RadzenHeatmap when X and Y are categorical strings (days × hours, rows × columns) and a simple two-colour gradient is enough — it is a standalone component, not a chart series.
Use RadzenHeatmapSeries (this demo) when X and Y are numeric measurements (metres, seconds, temperature). It shares axes, tooltips, legend and click events with other series, so you can overlay a scatter/line on top of it.
Use RadzenContourSeries when you want smooth interpolated iso-bands between sample points instead of discrete cells — ideal for isoilluminance, temperature and other scalar-field plots.

Frequently asked questions

When should I use a heatmap?

When you want to see how a value varies across two axes at once - activity by hour and day, or density across a grid - and color reads faster than numbers.

How is the heatmap series different from the standalone heatmap?

The heatmap series plots on numeric X/Y axes inside a chart, alongside other series if needed. The standalone heatmap component is built for a labeled category grid, like a calendar or matrix.

Contour Chart Heatmap Scatter Chart

All the tools in one place

Save Hours on Every Project

With Radzen Blazor subscription you get the full toolkit, including:

Dedicated support backed by proven expertise

Premium themes and theme editor

Ready-to-use UI blocks

Complete app templates

Visual design-time-experience

Start Free See Subscription Plans

Radzen Blazor Chart with heatmap series

Frequently asked questions

When should I use a heatmap?

How is the heatmap series different from the standalone heatmap?

Related

Save Hours on Every Project

Demos Configuration

Radzen Blazor Chart with heatmap series

Frequently asked questions

When should I use a heatmap?

How is the heatmap series different from the standalone heatmap?

Related

Radzen Blazor Newsletter

Save Hours on Every Project

Demos Configuration