How to create an empty vector in R ?

In this article, we are going to see how to create an empty vector in R Programming Language. There are five ways of creating an empty vector and each of them will be discussed in detail below:

• Using c()
• Using vector()
• Creating empty vectors using NULL
• Using numeric() method
• Using rep() method

Method 1: Using c()

Here in this, we need not pass anything while creating an empty vector as we are creating empty vector.

Syntax:

vector name <- c()

Where, vector name can be any valid identifier.

Example :

Output:

NULL

Output is null as we are not passing any data to it.

Method 2: Using vector()

Here in this, we need not pass anything as we are creating an empty vector:

Syntax:

vector name  <- vector()

Where, vector name can be any valid identifier.

Example

Output:

logical(0)

Output is empty as we are not passing any data.

Method 3: Creating empty vectors using NULL

 Here we are creating empty vector by passing null.

Syntax:

 vector name  <- NULL

Where, vector name can be any valid identifier.

Example 

Output:

NULL

Method 4:Using numeric() method

Here we are creating empty vector by using numeric().

Syntax:

vector name <- numeric()

Where, vector name can be any valid identifier.

Example

Output:

numeric(0)

Method 5:Using rep() method

Here we can directly use rep() to create empty vector.

Syntax:

vector name<- rep()

where, vector name can be any valid identifier.

Example:

Output:

NULL