Gaps/Null Points

This sample uses C# 13 preview features such as partial properties, it also uses features from the CommunityToolkit.Mvvm package, you can learn more about it here.

sample image sample image

View Model

using LiveChartsCore.Defaults;

namespace ViewModelsSamples.General.NullPoints;

public class ViewModel
{
    public double?[] Values1 { get; set; } =
        [5, 4, null, 3, 2, 6, 5, 6, 2];

    public double?[] Values2 { get; set; } =
        [2, 6, 5, 3, null, 5, 2, 4, null];

    public ObservablePoint?[] Values3 { get; set; } =
        [
            new ObservablePoint { X = 0, Y = 1 },
            new ObservablePoint { X = 1, Y = 4 },
            null,
            new ObservablePoint { X = 4, Y = 5 },
            new ObservablePoint { X = 6, Y = 1 },
            new ObservablePoint { X = 8, Y = 6 },
        ];
}

XAML

<UserControl
    x:Class="WPFSample.General.NullPoints.View"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
    xmlns:lvc="clr-namespace:LiveChartsCore.SkiaSharpView.WPF;assembly=LiveChartsCore.SkiaSharpView.WPF"
    xmlns:vms="clr-namespace:ViewModelsSamples.General.NullPoints;assembly=ViewModelsSamples">

    <UserControl.DataContext>
        <vms:ViewModel/>
    </UserControl.DataContext>

    <lvc:CartesianChart>
        <lvc:CartesianChart.Series>
            <lvc:SeriesCollection>
                <lvc:XamlLineSeries Values="{Binding Values1}"/>
                <lvc:XamlLineSeries Values="{Binding Values2}"/>
                <lvc:XamlLineSeries Values="{Binding Values3}"/>
            </lvc:SeriesCollection>
        </lvc:CartesianChart.Series>
    </lvc:CartesianChart>
</UserControl>

Articles you might also find useful:

Cartesian chart control
Scatter series properties
Scatter series properties