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.
- 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.
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Demos Configuration
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