Error closing R commander when package rgl is loaded

library(ca)
# Loading required package: rgl
library(Rcmdr)
#开发者_StackOverflow社区 R Commander starts

# When trying to close R Commander window
Error in unloadNamespace("rgl") : name space 'rgl' is still used by: 'ca'

What is the suggested way to close R Commander in such a situation?

Try

unloadNamespace('ca')

then close the 'Rcmdr' window.

You'll need to reattach the 'ca' package if you still need to use it.