installing R kernal for iPython

Install the R kernal, see here.

On OSX, make sure you open the R in termal, not in R Studio, which doesn’t honor $PATH changes in ~/.bash_profile.

install.packages(c('repr', 'pbdZMQ', 'devtools')) # repr is already on CRAN
devtools::install_github('IRkernel/IRdisplay')
devtools::install_github('IRkernel/IRkernel')
IRkernel::installspec()

Then restart or refresh the browser. It worked for me.