[R] 3D version of triax.plot (package plotrix)

[Gabriele Esposito]

Good afternoon,

I am looking for a way to do a scatterplot of 4 values summing to 1
inside a 3D symplex, i.e. an equilateral pyramid. With the function
triax.plot I can do that with 3 values summing to 1, but I can't find
an equivalent with an extra dimension.

Thanks to whoever can help me!

Best,

Gabriele Esposito