A First R Session
Let’s make a simple data set (in R parlance, a vector) consisting of the numbers 1, 2, and 4, and name it
> x <- c(1,2,4)
The standard assignment operator in R is
<-. You can also use
=, but this is discouraged, as it does not work in some special situations. Note that there are no fixed types associated with variables. Here, we’ve assigned a vector to
x, but later we might assign something of a different type to it. We’ll look at vectors and the other types in Section 1.4.
c stands for concatenate. Here, we are concatenating the numbers 1, 2, and 4. More precisely, we are concatenating three one-element vectors that consist of those numbers. This is because any number is also considered to be a one-element vector.