[R] Adding plane in a 3D scatterplot

Uwe Ligges ligges at statistik.tu-dortmund.de
Thu Oct 2 20:08:54 CEST 2008

Megh Dal wrote:
> I have drawn a 3D scatter plot :
> library(mnormt)
> library(scatterplot3d)
> dat = cbind(rmnorm(3, rep(0,2), diag(2)), 1:3)
> scatterplot3d(dat)
> Now I want to do 2 things :
> 1 : In the Z-axis (i.e. height), I want to see only numbers 1,2,3, etc NOT, 1,1.5,2,2.5.............
> 2. I want to add two Horizontal planes at hight z=2 and z=3. Those two planes should look like "bottom" of that 3D plot [i.e. like Grid-lines].I already gone through "$plane3d" but could not get through. In the help page, a description is given with a regression line, however I could not understand how I can implement that in my problem. 


  s3d <- scatterplot3d(dat, lab.z=2, scale.y=0.7, angle=20)
  s3d$plane3d(2,0,0, "solid", col="grey")

Uwe Ligges

> Any help will be highly appreciate. 
> Regards,
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