Radzen Blazor Chart with contour series (isoilluminance)

A contour chart turns a grid of values into filled bands and iso-lines, the way a topographic map shows elevation - ideal for scalar fields like temperature, illuminance, or any smooth surface.

When to use which?

Use RadzenContourSeries (this demo) when samples lie on a numeric grid and you want smooth interpolation between them — the result looks continuous and is resolution-independent.
Use RadzenHeatmapSeries when you want to show the raw sample cells without interpolation (each data point becomes one coloured rectangle).
Use RadzenHeatmap for categorical grids (days × hours) where the axes are strings, not numbers.

Show iso-lines

Frequently asked questions

When should I use a contour chart?

When your data is a value sampled across a 2D grid and you want to see its shape - peaks, valleys, and gradients - as bands of color with optional iso-lines between them.

What data does it need?

Values on a regular X/Y grid. The chart interpolates between samples to draw smooth bands, and you can turn on iso-lines to outline each level.

Heatmap Series Chart Heatmap Scatter Chart

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Radzen Blazor Chart with contour series (isoilluminance)

Frequently asked questions

When should I use a contour chart?

What data does it need?

Related

Save Hours on Every Project

Demos Configuration

Radzen Blazor Chart with contour series (isoilluminance)

Frequently asked questions

When should I use a contour chart?

What data does it need?

Related

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Save Hours on Every Project

Demos Configuration