Installing rgl on Ubuntu and Mac: X11 not found

Question

I have seen this question here: Error in loading rgl package with Mac OS X but there is no mentioning about installation error, which is my case. I cannot install rgl<

Answer 1

Not sure about Mac case but on Windows I faced issues downloading the same rgl Package. Installing the RGL requires the devtools package

install.packages("devtools")
library(devtools)
install.packages("rgl")
library(rgl)