Additional customizations for radar charts

Dear team,

Thank you very much for this great library 🙂

I would like to see the possible font options (e.g. size, bold, font) for the radar charts as well. As far as I can see (cf. line 121 in RadarPlot.cs) the font cannot be configured right now. I would like to format the font for the axis and the category names differently. For me, this would be a valuable addition.

Also, the different axis of the radar seems to be automatic. I would need the opposite: Manually fixed axis. Let’s say something like this:

var allValues = new [,] { { 5, 357, 0.244 } };
var categoryNames = new[] { "A", "B", "C" };
var fillColors = new[] {Color.FromArgb(128, Color.CornflowerBlue)};

plt.PlotRadar(values: allValues, categoryNames: categoryNames, categoryFontSize: 26, fillColors: fillColors);

plt.RadarAxis(axisIndex: 1, min: 1, max: 7, fontSize: 21, bold: true);
plt.RadarAxis(axisIndex: 2, min: 10, max: 750, fontSize: 21, bold: true);
plt.RadarAxis(axisIndex: 3, min: -1, max: 1, fontSize: 21, bold: true);

[swharden]

This looks fantastic @Benny121221, way to go!

RadarAxis.Circle	RadarAxis.Polygon

I think we addressed all of @SommerEngineering’s original suggestions, but if not feel free to open this issue back up 👍

I hope to get a ScottPlot 4.1 pre-release out on NuGet tomorrow 🤞

[swharden]

The last thing that was missing was that I could define the maximum of the axes myself, instead of deriving it from the given values. I created a PR for this.

Thanks @SommerEngineering! I merged #636 then refined the cookbook example names/descriptions a bit. Thanks for the contribution! 👍