Basic Gauge

The [ObservableObject], [ObservableProperty] and [RelayCommand] attributes come from the CommunityToolkit.Mvvm package, you can read more about it here.

This web site wraps every sample using a UserControl instance, but LiveCharts controls can be used inside any container.

sample image

View model

using System.Collections.Generic;
using LiveChartsCore;
using CommunityToolkit.Mvvm.ComponentModel;
using LiveChartsCore.SkiaSharpView.Extensions;

namespace ViewModelsSamples.Pies.Gauge1;

public partial class ViewModel : ObservableObject
{
    public IEnumerable<ISeries> Series { get; set; } =
        GaugeGenerator.BuildSolidGauge(
            new GaugeItem(
                30,          // the gauge value
                series =>    // the series style
                {
                    series.MaxRadialColumnWidth = 50;
                    series.DataLabelsSize = 50;
                }));
}

XAML

<UserControl x:Class="UnoWinUISample.Pies.Gauge1.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.WinUI"
            xmlns:vms="using:ViewModelsSamples.Pies.Gauge1"
            mc:Ignorable="d">
    <UserControl.DataContext>
        <vms:ViewModel/>
    </UserControl.DataContext>
    <lvc:PieChart
        Series="{Binding Series}"
        InitialRotation="-90"
        MinValue="0"
        MaxValue="100">
    </lvc:PieChart>
</UserControl>

Articles you might also find useful:

Pie chart control
pie series properties
Gauges