Here is a comprehensive compilation of many R commands that most of the scientists can find useful for analyzing research data.
Basics
- Check working directory:
getwd()
- Change working directory:
setwd("path")
- Show help about a command (quotes are important):
help("command")
?"command"
- Show the objects and variables of the working space:
ls()
- Remove an object from the working space:
rm(x) rm(list=ls()) # Removes all the objects
- Save the working space:
save.image() # in the file .RData at the working directory save(object list,file="myfile.RData") # saves the object list into the chosen file
- Reload a working space:
load("myfile.RData")
- Quit R:
q()