To get help from the R online documentation, use the help() and help.search() functions. The help() function is useful if you already know the command you will be using and need information on its syntax. The help.search() function searches the R documentation for keywords.
> help(plot) > help.search(regression)
To quit R, use the quit() function:
For a more comprehensive introduction to R, consult the pdf “An Introduction to R.”
The Indiana University Knowledge Base provides answers to questions about using R on the Indiana University campuses as well as general questions about R functions.
If you have prior experience with another statistical package, you may find Quick R for SAS/SPSS/Stata Users helpful.
For SAS users, the SAS-and-R Blog may be a particularly useful tool.
The UCLA Academic Technology Services offer R resources for advanced users.
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