Annular Elliptical Sector

An annular elliptical sector is the 2D shape between two ellipses and may be sliced to contain only the area between two angles relative to the center point.

Shapes.cs

ScottPlot.Plot myPlot = new();

Coordinates center = new(0, 0);
double outerRadiusX = 4.0;
double outerRadiusY = 2.0;
double innerRadiusX = 2.0;
double innerRadiusY = 1.0;
Angle start = Angle.FromDegrees(45);
Angle sweep = Angle.FromDegrees(135);

var cs = myPlot.Add.AnnularEllipticalSector(center, outerRadiusX, outerRadiusY, innerRadiusX, innerRadiusY, start, sweep);
cs.FillColor = Colors.Blue.WithAlpha(.2);
cs.LineColor = Colors.Black;
cs.LineWidth = 5;

myPlot.Axes.SquareUnits(); // use square units so circles are not stretched

myPlot.SavePng("demo.png", 400, 300);

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This recipe is one of many in the Shapes category