R : Vectors

Vector is similar to arrays in Java, it stores multiple copies of same data type. The ‘c’ function is used to create vectors in R.

Syntax

c(elem1, elem2 ….. elemN)

> c(1, 5, 7, 9, 8, 6, 4, 2)
[1] 1 5 7 9 8 6 4 2
> 
> class(c)
[1] "logical"
> 
> length(c(1, 5, 7, 9, 8, 6, 4, 2))
[1] 8

> vector1 <- c(1, 2, 3, 4)
> 
> vector1
[1] 1 2 3 4
> 
> length(vector1)
[1] 4
> 
> class(vector1)
[1] "numeric"

You can create vectors using vector() function also.

Syntax

vector(mode, length=val)

> vector2 = vector("numeric", length=10)
> 
> vector2
 [1] 0 0 0 0 0 0 0 0 0 0

By default, vector function initializes all values to zero for a numeric vector.

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