Contour plot chart

info

Charts are available with Avalonia Pro.

Contour plots interpolate values across two spatial dimensions and render the result as isolines, filled regions, or both.

When to use

• Surface estimation: Visualize a scalar field from scattered measurements.
• Hotspot analysis: Reveal peaks, valleys, and gradients in two dimensions.
• Engineering maps: Show pressure, temperature, or concentration surfaces.

Code example

XAML

<charts:ContourPlot Title="Temperature field"
                              Height="320"
                              ItemsSource="{Binding ContourData}"
                              XPath="X"
                              YPath="Y"
                              ValuePath="Temperature"
                              ContourLevels="10" />

Data model (C#)

public record ContourPoint(double X, double Y, double Temperature);

public ObservableCollection<ContourPoint> ContourData { get; } = new()
{
    new(0, 0, 18),
    new(0, 10, 24),
    new(10, 0, 21),
    new(10, 10, 28)
};

Common properties

Property	Description	Default
ItemsSource	Collection of sampled points.	null
XPath	Path to the X coordinate.	null
YPath	Path to the Y coordinate.	null
ValuePath	Path to the scalar value.	null
ContourLevels	Number of contour levels to compute.	8
ShowFill	Whether to fill the contour regions.	true
ShowLines	Whether to draw contour lines.	true

See also

• Hexbin chart
• Density plot chart