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Create a Vector of Ones in R

In this tutorial, we will look at how to create a vector of ones (having 1 as its elements) in R with the help of some examples.

How to create a vector of ones in R?

You can create a vector of ones in R using different methods. For example, using the c() function, using the rep() function, etc. Let’s look at these methods with the help of examples.

Using c() function

The c() is used to create a vector by combining different values (and/or vectors) together. You can use the c() function to create a vector of ones if the length of the vector is relatively small.

For example, let’s create a vector of ones of length four.

# create a vector of ones
vec <- c(1, 1, 1, 1)
# display the vector
print(vec)

Output:

[1] 1 1 1 1

We get a vector of four ones.

Manually typing 1 can become cumbersome if you want to create a large vector of ones. Thus, it’s recommended to use the rep() function.

Using rep() function

You can use the rep() function in R to create a vector with a value repeated a specified number of times. The following is the syntax –

rep(x, t)

It creates a vector with the value x repeated t times.

To create a vector of ones, pass 1 as the first argument to the rep() function and the length of the vector as its second argument.

Let’s look at an example. We’ll create the same vector as above – a vector of four ones.

# create a vector of ones
vec <- rep(1, 4)
# display the vector
print(vec)

Output:

[1] 1 1 1 1

We get a vector of four ones. The same result we got above.

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Author

  • Piyush is a data scientist passionate about using data to understand things better and make informed decisions. In the past, he's worked as a Data Scientist for ZS and holds an engineering degree from IIT Roorkee. His hobbies include watching cricket, reading, and working on side projects.