R rgl package installation warning error

Question

> library(rgl)

Warning messages:
1: In rgl.init(initValue, onlyNULL) : RGL: unable to open X11 display
2: In fun(libname, pkgname) : error in rgl_init

I also tried plot3d functions and I got the error:

Error in rgl.open(useNULL) : rgl.open failed

How to resolve it?

Answer 1

Your previous questions indicate that you're on Ubuntu: rgl depends on some gl packages to function.

What you may not know: you can install r-cran-rgl as a package

$ sudo apt-get install r-cran-rgl

That will install all necessary dependencies and allow you to just load the package in R. It would probably be helpful to run remove.packages("rgl") from R first so that you have the correct version.