str_detect Function in R (stringr Package)
In this article you’ll learn how to use the str_detect function to detect the presence or absence of a pattern in a character string in R.
Table of contents:
- Creation of Example Data
- Example: Application of str_detect Function in R
- Video, Further Resources & Summary
It’s time to dive into the examples:
Creation of Example Data
In the example of this tutorial, we’ll use the following exemplifying character string:
x <- "hello R user, this is my string" # Create example character string
As you can see, our example string contains a simple sentence stored in the data object x.
Example: Application of str_detect Function in R
Before the application of the str_detect command, we need to install and load the stringr package to R:
install.packages("stringr") # Install stringr package library("stringr") # Load stringr package
Now, we can apply the str_detect function as shown below:
str_detect(x, "is") # Apply str_detect function # TRUE
The previous R code checks whether the pattern “is” is contained within our example string x.
As you can see based on the output of the RStudio console, the str_detect function returns a logical value (i.e. FALSE or TRUE), showing whether the pattern is present in our character string.
Video, Further Resources & Summary
Some time ago I have published a video on my YouTube channel, which explains the examples of this tutorial. Please find the video below.
The YouTube video will be added soon.
Also, you might want to have a look at some of the other articles that I have published on my website. Some articles are listed below:
In summary: In this post, I explained how to check for the presence or absence of a pattern in a string in the R programming language. Let me know in the comments section below, in case you have additional questions.