How to keep only Alphabets in a String in R - Step by Step Examples

How to keep only Alphabets in a String in R ?

To keep only alphabets in a string in R, you can use the 'gsub' function with a regular expression pattern to remove non-alphabetic characters.

In this example,

We create a string variable str1 with a value of "Hello123 World".
We use the 'gsub' function with a regular expression pattern "[^[:alpha:]]" to match non-alphabetic characters and replace them with an empty string.
Finally, we print the modified string str1.

str1 <- "Hello123 World"
str1 <- gsub("[^[:alpha:]]", "", str1)
print(paste("Modified string:", str1))

[1] "Modified string: HelloWorld"

In this example,

We create a string variable str2 with a value of "apple@banana".
We use the 'gsub' function with a regular expression pattern "[^[:alpha:]]" to match non-alphabetic characters and replace them with an empty string.
Finally, we print the modified string str2.

str2 <- "apple@banana"
str2 <- gsub("[^[:alpha:]]", "", str2)
print(paste("Modified string:", str2))

[1] "Modified string: applebanana"

In this tutorial, we learned How to keep only Alphabets in a String in R language with well detailed examples.