Can I use ConvertToPolar for more than two traits?

[Joannavonberg]

Update documentation to reflect the fact that ConvertToPolar can be used for more than two traits, and change the explanation per variable

Discussed in #7

^{Originally posted by ferfacal92 October 25, 2023}
Hello,

I wonder if I can use ConvertToPolar for more than two traits? In my case for 3 traits.

Thank you

Fernando