Extract Year from Date in R (Example)

 

This tutorial illustrates how to return only the year of an object with class Date in the R programming language.

The content of the tutorial is structured as follows:

Let’s dive right in:

 

Creation of Exemplifying Data

Consider the following example data:

my_date <- "2021/01/30"                                     # Create example data
my_date                                                     # Print example data
# "2021/01/30"

As you can see based on the previous output of the RStudio console, our exemplifying data is a single date formatted as character string.

 

Example: Extracting Only Year from Date Object Using format Function

The following R code illustrates how to extract the year from a date object in R. For this, we first have to convert our character string to the Date class:

my_date_formatted <- as.Date(my_date, format = "%Y/%m/%d")  # Convert to Date object
my_date_formatted                                           # Print Date object
# "2021-01-30"

Let’s check the class of our new data object:

class(my_date_formatted)                                    # Check class
# "Date"

Our formatted data object has the class Date. Looks good!

Now, we can apply the format function to extract only the year from our Date object:

my_date_year <- format(my_date_formatted, "%Y")             # Extract only year
my_date_year                                                # Print final output
# "2021"

The output is the year 2021!

 

Video & Further Resources

I have recently released a video on my YouTube channel, which shows the R codes of this post. You can find the video below:

 

The YouTube video will be added soon.

 

Besides the video, I can recommend to have a look at the other tutorials on my website.

 

In this R post you learned how to extract years from dates. If you have any additional questions, let me know in the comments section below.

 

Subscribe to my free statistics newsletter

Get regular updates on the latest tutorials, offers & news at Statistics Globe.
I hate spam & you may opt out anytime: Privacy Policy.


Leave a Reply

Your email address will not be published. Required fields are marked *

Fill out this field
Fill out this field
Please enter a valid email address.

Menu
Top