# Test if Data Object is a Vector in R (2 Examples)

In this post youâ€™ll learn how to check whether a data object is a vector in the R programming language.

The page will consist of these contents:

Letâ€™s just jump right in!

## Creation of Example Data

To begin with, weâ€™ll need to create some example data:

```my_vec <- 1:5                               # Create example vector
my_vec                                      # Print example vector
# [1] 1 2 3 4 5```

The previous output of the RStudio console shows that the example data is a vector object containing five elements.

If we now apply the is.vector function to this data object, the logical value TRUE is returned:

```is.vector(my_vec)                           # Apply is.vector function to vector
# [1] TRUE```

However, thereâ€™s a problem with this procedure. Letâ€™s illustrate that by creating a list object:

```my_list <- list(1:3,                        # Create example list
"x")
my_list                                     # Print example list
# [[1]]
# [1] 1 2 3
#
# [[2]]
# [1] "x"```

If we now apply the is.vector function to this list, an unexpected output is returned:

```is.vector(my_list)                          # Apply is.vector function to list
# [1] TRUE```

Surprisingly, the previous output has returned the logical value TRUE once again, even though we have applied the is.vector function to a list object.

How can we avoid this surprising result? This is what I will show next!

## Example 1: Apply is.vector() & is.atomic() Functions to List Object

The following R programming syntax illustrates how to properly test whether a data object is a vector.

For this task, we have to apply the is.vector function in combination with the is.atomic function. Have a look at the R code below:

```is.vector(my_list) && is.atomic(my_list)    # Apply is.vector & is.atomic
# [1] FALSE```

This time, the logical value FALSE was returned, i.e. the expected result.

## Example 2: Apply is.vector() & is.atomic() Functions to Vector Object

We may also apply our combined functions to a real vector object:

```is.vector(my_vec) && is.atomic(my_vec)
# [1] TRUE```

The value TRUE is printed â€“ great!

## Video & Further Resources

Do you need more information on the R programming code of this article? Then I can recommend watching the following video on my YouTube channel. In the video, I illustrate the examples of this tutorial in a live session.

In addition, you may read some of the other tutorials on this homepage. A selection of tutorials about related topics such as vectors, data objects, extracting data, and character strings can be found below:

Summary: This article has illustrated how to test whether a data object is a vector in R. In case you have further questions, let me know in the comments below.

Subscribe to the Statistics Globe Newsletter