Scott Jackson

This is going to be a really short one that I hope helps out some R users.

You might find when installing a package in R that you get something to the effect of

1package 'rgl' is not available

If you try to install it directly:

1install.packages('rgl')
2...
3# installation failed, X11 is not available

The first step is to install XQuartz.

Then, because the libraries and headers aren't installed to a location that rgl's installation script looks for:

1options(configure.args = "--x-includes=/opt/X11/include --x-libraries=/opt/X11/lib")
2install.packages("rgl")

This should get you to where you need to be. If not, please reach out my Twitter handle: @scottmmjackson and let me know.