Error : package ‘rgl’ was built before R 3.0.0: please re-install it
Solution:
Open Terminal and type as below
$ sudo apt-get install libX11-dev freeglut3 freeglut3-dev
$ sudo apt-get update
$ sudo apt-get upgrade
Then switch to R (type R) from Terminal or open RStudio and type as below
install.packages("rgl")
That's it.
