Radial Area

This web site builds the control from code behind but you could also grab it from the toolbox, this sample also uses a ViewModel to populate the properties of the control(s) in this sample.

sample image

View model

using LiveChartsCore;
using LiveChartsCore.SkiaSharpView;
using LiveChartsCore.SkiaSharpView.Painting;
using SkiaSharp;
using CommunityToolkit.Mvvm.ComponentModel;

namespace ViewModelsSamples.Polar.RadialArea;

public partial class ViewModel : ObservableObject
{
    public ISeries[] Series { get; set; } =
    {
        new PolarLineSeries<int>
        {
            Values = new[] { 7, 5, 7, 5, 6 },
            LineSmoothness = 0,
            GeometrySize= 0,
            Fill = new SolidColorPaint(SKColors.Blue.WithAlpha(90))
        },
        new PolarLineSeries<int>
        {
            Values = new[] { 2, 7, 5, 9, 7 },
            LineSmoothness = 1,
            GeometrySize = 0,
            Fill = new SolidColorPaint(SKColors.Red.WithAlpha(90))
        }
    };

    public PolarAxis[] AngleAxes { get; set; } =
    {
        new PolarAxis
        {
            LabelsRotation = LiveCharts.TangentAngle,
            Labels = new[] { "first", "second", "third", "forth", "fifth" }
        }
    };
}

Form code behind

using System.Windows.Forms;
using LiveChartsCore.SkiaSharpView.WinForms;
using ViewModelsSamples.Polar.RadialArea;

namespace WinFormsSample.Polar.RadialArea;

public partial class View : UserControl
{
    /// <summary>
    /// Initializes a new instance of the <see cref="View"/> class.
    /// </summary>
    public View()
    {
        InitializeComponent();
        Size = new System.Drawing.Size(50, 50);

        var viewModel = new ViewModel();

        var polarChart = new PolarChart
        {
            Series = viewModel.Series,
            AngleAxes = viewModel.AngleAxes,
            InitialRotation = -45,

            // out of livecharts properties...
            Location = new System.Drawing.Point(0, 0),
            Size = new System.Drawing.Size(50, 50),
            Anchor = AnchorStyles.Left | AnchorStyles.Right | AnchorStyles.Top | AnchorStyles.Bottom
        };

        Controls.Add(polarChart);
    }
}

Articles you might also find useful:

Polar chart control
Polar series properties