Polar Axis with Arrows

Arrows can be placed on a polar coordinate system with their base at the center and their tips used to indicate points in polar space. The Phaser plot type uses this strategy to display collections of similarly styled arrows.

PolarAxis.cs

ScottPlot.Plot myPlot = new();

PolarCoordinates[] points = [
    new(10, Angle.FromDegrees(15)),
    new(20, Angle.FromDegrees(120)),
    new(30, Angle.FromDegrees(240)),
];

var polarAxis = myPlot.Add.PolarAxis(radius: 30);
polarAxis.Circles.ForEach(x => x.LinePattern = LinePattern.Dotted);
polarAxis.Spokes.ForEach(x => x.LinePattern = LinePattern.Dotted);

IPalette palette = new ScottPlot.Palettes.Category10();
Coordinates center = polarAxis.GetCoordinates(0, 0);
for (int i = 0; i < points.Length; i++)
{
    Coordinates tip = polarAxis.GetCoordinates(points[i]);
    var arrow = myPlot.Add.Arrow(center, tip);
    arrow.ArrowLineWidth = 0;
    arrow.ArrowFillColor = palette.GetColor(i).WithAlpha(.7);
}

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

Edit on GitHub

This recipe is one of many in the Polar Axis category