Chapter 4 The Basics

4.1 R can be our calculator

Addition (use +).

> 2+2

[1] 4

Multiplication (use *).

> 2*6

[1] 12

Division (use /).

> 150/3

[1] 50

…anything is possible

> ((2+3)*8)/123

[1] 0.3252033

💡 Type in your numbers either within the workshop.R file (TOP-RIGHT) or within the console (BOTTOM-RIGHT). Then to run - click Run at the top of the .R script or type ctrl/cmd + enter. The answer prints in the console.

4.2 R can be our notebook

We can save important information for later.

We can use <- or =

> my_name <- "Joy"
> paste("My name is", my_name)

[1] "My name is Joy"

> several_names <- c("Joy", "Anger", "Sadness")
> paste("My name is", several_names)

[1] "My name is Joy"     "My name is Anger"   "My name is Sadness"

> a_number <- 137
> another_number <- 120
> 
> a_number * another_number

[1] 16440

> a_number / another_number

[1] 1.141667

> (2*a_number) + another_number

[1] 394

💡 Students are encouraged to make their own variable names and get used to R coding symbols