I'm trying to install the Rattle GUI for R on OS Sierra. Installation requires the RGtk2 package, which prompts me to install GTK+, which it automatically does for me. Despite installing, when I try to load Rattle (or RGtk2) I receive this error:
Error in as.GType(type) : Cannot convert RGtkBuilder to GType
From some other Googling, it seems R can't locate the installed files. Another error I get is:
2: In doTryCatch(return(expr), name, parentenv, handler) :
unable to load shared object '/Library/Frameworks/R.framework/Resources/modules//R_X11.so':
dlopen(/Library/Frameworks/R.framework/Resources/modules//R_X11.so, 6): Library not loaded: /opt/X11/lib/libSM.6.dylib
Referenced from: /Library/Frameworks/R.framework/Resources/modules//R_X11.so
Reason: image not found
When I head into Library/Frameworks, I see that all these files are installed in the correct locations, including the GTK+ framework. The one that puzzles me is /opt/X11/lib/libSM.6.dylib, I'm not sure where that would be located.
Does anyone have any idea why R won't recognize GTK+? Thanks.