I am trying to plot positions of spheres in 3-D space. Each sphere has the same radius and is defined by its center point. I am plotting using
but the size of the plotted circle for each sphere changes based on zoom level. Is there a way to set the marker size to a defined number? Like I'd want to say, "MarkerSize = 2 plotting units" so that no matter how zoomed in I am, the marker stays the same size relative to the coordinate system. Also, it has to be dynamic enough that I can rotate and zoom with the figure freely.
[I looked into the "rectangle()" command, but it only works in 2-D.]