Using R and RStudio for Data Management, Statistical Analysis, and Graphics, 2nd Edition

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“K23166” — 2015/1/28 — 9:35 — page 226 — #252

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226 APPENDIX A. INTRODUCTION TO R AND RSTUDIO

an example, to access the mean() function from the base package, the user would specify

base::mean() instead of mean().

The names of all variables within a given dataset (or more generally for sub-objects

within an object) are provided by the names() command. The names of all objects defined

within an R session can be generated using the objects() and ls() commands, which

return a vector of character strings. RStudio includes an Environment tab that lists all the

objects in the current environment.

The print() and summary() functions can be used to display ...