R STUDIO
INTRODUCTION
1) Console → It is possible to type in the commands we intend to execute and in which the output produced by the
commands is printed.
2) Script → It allows you to write several lines of code (while the console is useful for just few lines).
• If you want to execute just a single line use Ctrl+Enter
• To create a new script: File → New File → R Script
• To save the script in a specific folder:
o “More”
o “Set as working directory”
o Now you can save it (top left corner)
3) Environment → It shows the list of objects created so far with a summary for each of them.
To clean up the environment use rm(list=ls()), where ls() is the function to see the list of object created so far.
4) History → You can search for a variable and find all the occurrences where you used that variable.
5) Files → It shows the contents of the current directory, with the possibility to change it by clicking on the name of
the current directory.
6) Plots → It will sequentially report all the graphs produced during the working session.
7) Packages → It lists the packages installed on your computer and those that are currently loaded in memory
(indicated by the check-marks next to the package names).
Load data
To load the contents of an .RData file in RStudio, you can:
• choose File → Open File..., select the file to open and confirm your choice
• click on the file name in the Files tab and confirm
• use the load(“filename”) function
If the file was in a directory other than the current one, you must first change the working directory: you have to
move to that directory in the Files tab, click on the icon with the gear (“More”) and choose “Set As Working
Directory”.
