Radial Area

sample image

View model

using LiveChartsCore;
using LiveChartsCore.SkiaSharpView;
using LiveChartsCore.SkiaSharpView.Painting;
using SkiaSharp;

namespace ViewModelsSamples.Polar.RadialArea;

public class ViewModel
{
    public ISeries[] Series { get; set; } = [
        new PolarLineSeries<int>
        {
            Values = [7, 5, 7, 5, 6],
            LineSmoothness = 0,
            GeometrySize= 0,
            Fill = new SolidColorPaint(SKColors.Blue.WithAlpha(90))
        },
        new PolarLineSeries<int>
        {
            Values = [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 = ["first", "second", "third", "forth", "fifth"]
        }
    ];
}


using Eto.Forms;
using LiveChartsCore.SkiaSharpView.Eto;
using ViewModelsSamples.Polar.RadialArea;

namespace EtoFormsSample.Polar.RadialArea;

public class View : Panel
{
    /// <summary>
    /// Initializes a new instance of the <see cref="View"/> class.
    /// </summary>
    public View()
    {
        var viewModel = new ViewModel();

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

        Content = polarChart;
    }
}

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Polar chart control
Polar series properties