Radzen Blazor Heatmap Chart
A heatmap lays values out on a labeled grid and colors each cell by size, so patterns and outliers jump out - think a calendar of activity or a correlation matrix.
- Use RadzenHeatmap (this demo) when X and Y are categorical strings and a continuous two-colour gradient is enough.
- Use RadzenHeatmapSeries inside a
RadzenChartwhen X and Y are numeric measurements and you need shared axes, discrete colour bands or overlay with other series. - Use RadzenContourSeries when samples are on a numeric grid and you want smooth interpolated iso-bands — e.g. isoilluminance, temperature or scalar-field plots.
Frequently asked questions
When should I use a heatmap?
When you want to compare a value across two categorical dimensions at once - day against hour, product against region - and color makes the pattern faster to read than numbers.
What data does it need?
A value for each row-and-column pair. The component lays them out on the grid and maps each value to a color from your scheme.
How is it different from the heatmap chart series?
This standalone heatmap is built for labeled category grids like calendars and matrices. The heatmap series plots on numeric X/Y axes inside a chart, alongside other series.
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Demos Configuration
Premium Themes
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- Fluent Dark
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