How to get First Item in a Vector in R - Step by Step Examples

How to get First Item in a Vector in R ?

To get the first item in a vector in R, you can use the indexing notation with the number 1 inside square brackets ([]).

In this example,

We create a vector named intVector containing integer values.
We use the indexing notation with [1] to access the first item in the integer vector.
The first integer item is returned.
We print the first integer item to the console.

intVector <- c(10, 20, 30, 40)
firstIntItem <- intVector[1]
print(firstIntItem)

[1] 10

In this example,

We create a vector named charVector containing character values.
We use the indexing notation with [1] to access the first item in the character vector.
The first character item is returned.
We print the first character item to the console.

charVector <- c('apple', 'banana', 'cherry')
firstCharItem <- charVector[1]
print(firstCharItem)

[1] "apple"

In this tutorial, we learned How to get First Item in a Vector in R language with well detailed examples.