I would like to make a 3D scatterplot with different shape symbols to represent different categories of data. In 2D, this is straightforward using the pch argument in the plot function, and I would like to extend it to the rgl plot3d function

However, as discussed in this thread,

CodePudding user response：

I just came across another package, scatterplot3D which seems to make this type of scatterplot very straightforward:

http://www.sthda.com/english/wiki/scatterplot3d-3d-graphics-r-software-and-data-visualization