Setting Up Your Working Directory (Mac)
> getwd()
"/Users/neilthawani"
A file must be under your working directory if you want to read data from it.
dir() lists all the files in the working directory.
R Console Input and Evaluation
<-< /span> is the assignment operator
> x <- 1
print explicitly prints an object
> print(x)
[1] 1
Typing 'x' auto-prints it.
> x
[1] 1
x is a numeric vector where the first element is 1.
# indicates comments.
To create integer sequences:
> x <- 1:20
> x
[1] 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
[16] 16 17 18 19 20