Native support for Radar plots as a `LayerSpec` object

[OSuwaidi]

Would love to see Radar plots being natively supported in the lets-plot library to expand the library's richness.

I believe it would be a good addition to be able to visualize datasets with multivariate features against multiple categories!

[alshan]

See discussion https://github.com/JetBrains/lets-plot/discussions/952

[alshan]

Hi @OSuwaidi , since 4.3.0 radar/spider plots are supported via coord_polar() + "flat" option:

• https://nbviewer.org/github/JetBrains/lets-plot/blob/master/docs/f-24a/coord_polar.ipynb
• https://nbviewer.org/github/JetBrains/lets-plot-docs/blob/master/source/examples/demo/palmer_penguins.ipynb