Chapter 2 – Exploring R

 
# Chapter 2 - Exploring R
 
# Working with a Code Editor
 
## Exploring RGui
 
### Seeing the naked R console
 
 
### Issuing a simple command
 
24+7+11
24+7+11
 
### Closing the console
 
q()
 
 
## Dressing up with RStudio
 
 
# Starting Your First R Session
 
## Saying hello to the world
 
print("Hello world!")
print("Hello world!")
 
## Doing simple math
 
1+2+3+4+5
 
## Using vectors
 
 
c(1,2,3,4,5)
1:5
sum(1:5)
 
## Storing and calculating values
 
x <- 1:5
x
 
y <- 10
x + y
 
x
y
 
z <- x + y
z
 
h <- "Hello"
h
 
hw <- c("Hello", "world!")
hw
 
paste("Hello", "world!")
 
## Talking back to the user
 
h <- "Hello"
yourname <- readline("What is your name?")
paste(h, yourname)
 
# Sourcing a Script
 
h <- "Hello"
yourname <- readline("What is your name?")
print(paste(h, yourname))
 
 
### Finding help on functions
?paste
help(paste)
 
# Navigating the Workspace
ls()
 
## Manipulating the content of the workspace
 
rm(z)
ls()
 
##Saving your work
 
getwd()
save(yourname, file="yourname.rda")
 
## Retrieving your work
 
rm(yourname)
load("yourname.rda")

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