rfordummies (version 0.1.6)

ch02: Print examples of chapter 2 of 'R for Dummies'.

Description

To print a listing of all examples of a chapter, use ch2(). To run all the examples of ch2(), use example(ch2).

Usage

ch02()
ch2()

See Also

toc

Other Chapters: ch01(), ch03(), ch04(), ch05(), ch06(), ch07(), ch08(), ch09(), ch10(), ch11(), ch12(), ch13(), ch14(), ch15(), ch16(), ch17(), ch18(), ch19(), ch20()

Examples

# NOT RUN {
if (interactive()) {
# Chapter 2 - Exploring R

# Working with a Code Editor

## Exploring RGui

### Seeing the naked R console


### Issuing a simple command

24+7+11

### Closing the console

# }
# NOT RUN {
quit()
# }
# NOT RUN {

## Dressing up with RStudio


# Starting Your First R Session

## Saying hello to the 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"
if(interactive()){
yourname <- readline("What is your name?")
} else {
  yourname <- "Joris"
}
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()

filename <- file.path(tempdir(), "yourname.rda")
# }
# NOT RUN {
save(yourname, file=filename)
# }
# NOT RUN {
list.files(tempdir(), pattern = ".rda")

## Retrieving your work


rm(yourname)
# }
# NOT RUN {
load("yourname.rda")
# }
# NOT RUN {
}
# }