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Hi, I'm new here. This question concerns the package rgl. Is it possible to change the colour of a set of points drawn with plot3d /without/ removing them from the scene? The idea is to create a presentation of a clustering algorithm, step by step, representing the currently assigned cluster by a colour. Removing all the points with "rgl.pop" and replotting them at each step

I am trying to figure out how to use rgl package for animation. It appears that this is done using the play3d() function. Below I have some sample code that plots a 3D path and puts a sphere at the point farthest from the origin (which in this case also appears to be at the end of the path). What I would like to do is animate the movement of another sphere along the length of the path