Dear All,
 
using the example from the package scatterplot3d I created a 3d plot as follows:
 
x <-rnorm(500,50,2)
y <-rnorm(500,5,1)
z <-rnorm(500,6,1)
scatterplot3d(x, y, z, highlight.3d=TRUE, col.axis="blue",col.grid="lightblue", main="scatterplot3d - 1", pch=20)
 
I would like to ask if anyone could help me with the following:
 
1. I would like to draw  a plane across the plot that is paralell to the bottom of the plot and is in the heights of the value 6 on the axis "z", and goes across the plot
2. Is there a way to color all plotted values with the "z" variate less than the value of 6 one color, and all the rest another color?
 
I would greatly apreciate the help on this,
 
Sincerely,
 
Andras
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