How to change R versions on Mac
问题 I'm trying to use the legacy version of R to run a package on Mac. On Windows there is a switch in the General tab. However, it is not found on Mac RStudio. I referred to this post: https://support.rstudio.com/hc/en-us/articles/200486138-Using-Different-Versions-of-R And I do not quite understand the 3 options: Run the installer from CRAN for the R version you want to be current List item Use the RSwitch utility available at: http://r.research.att.com/ Update the R.framework/Versions/Current