[R] Could not load Package 'rgl'

[Christofer Bogaso]

Hi again,

I could not load the 'rgl' package with below Error details :

> library(rgl)
Error : .onLoad failed in loadNamespace() for 'rgl', details:
  call: dyn.load(file, DLLpath = DLLpath, ...)
  error: unable to load shared object
'/Library/Frameworks/R.framework/Versions/3.3/Resources/library/rgl/libs/rgl.so':
  dlopen(/Library/Frameworks/R.framework/Versions/3.3/Resources/library/rgl/libs/rgl.so,
6): Library not loaded: /opt/X11/lib/libGLU.1.dylib
  Referenced from:
/Library/Frameworks/R.framework/Versions/3.3/Resources/library/rgl/libs/rgl.so
  Reason: image not found
Error: package or namespace load failed for ‘rgl’

I am using R under below environment:

R version 3.3.2 (2016-10-31) -- "Sincere Pumpkin Patch"
Copyright (C) 2016 The R Foundation for Statistical Computing
Platform: x86_64-apple-darwin13.4.0 (64-bit)

Could you please help how to resolve this error.

Thanks for your time.