I have a wafer map where consecutive die can be either very positive or very negative at random. I would like to visualize this randomness be doing a 3D histogram relative to zero, so positive values (red) will go up and negaive values (blue) will go down. The closest I can get to what I want is using the Scatterplot 3D platform and turning on the drop lines, but the drop lines go all the way to the floor of the 3D box, and I need them to go to a reference line (in this case at zero). I can picture what I want in my head, but I can't figure ot how to make it work in JMP. Is there an add-in that might work for what I need, or is there another way to get this done?