Gaps/Null Points

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View Model


using CommunityToolkit.Mvvm.ComponentModel;
using LiveChartsCore;
using LiveChartsCore.Defaults;
using LiveChartsCore.SkiaSharpView;

namespace ViewModelsSamples.General.NullPoints;

[ObservableObject]
public partial class ViewModel
{
    public ISeries[] Series { get; set; } = new ISeries[]
    {
        // every series knows how to handle nulls.
        new ColumnSeries<double?>
        {
            Values = new double?[] { 5, 4, null, 3, 2, 6, 5, 6, 2 }
        },

        new LineSeries<double?>
        {
            Values = new double?[] { 2, 6, 5, 3, null, 5, 2, 4, null }
        },

        // for reference types, set the properties to null instead.
        new LineSeries<ObservablePoint>
        {
            Values = new ObservablePoint[]
            {
                new ObservablePoint { X = 0, Y = 1 },
                new ObservablePoint { X = 1, Y = 4 },
                new ObservablePoint { X = 3, Y = null },
                new ObservablePoint { X = 4, Y = 5 },
                new ObservablePoint { X = 6, Y = 1 },
                new ObservablePoint { X = 8, Y = 6 },
            }
        }
    };
}

<UserControl
    x:Class="UnoWinUISample.General.NullPoints.View"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:lvc="using:LiveChartsCore.SkiaSharpView.Uno.WinUI"
    xmlns:vms="using:ViewModelsSamples.General.NullPoints"
    mc:Ignorable="d">

    <UserControl.DataContext>
        <vms:ViewModel/>
    </UserControl.DataContext>
    <Grid>
        <lvc:CartesianChart Series="{Binding Series}"></lvc:CartesianChart>
    </Grid>

</UserControl>

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