by Sai gowtham

How to get last n characters from a string in R

In this tutorial, we are going to learn about how to get the last n characters from a string in R language.

Getting the last n characters

To get the last n characters from a string, we can use the stri_sub() function from a stringi package in R.

The stri_sub() function takes 3 arguments, the first one is a string, second is start position, third is end position.

Here is an example, that gets the last 3 characters from a string:

library(stringi)

name = 'apple'
lastThree = stri_sub(name,-3)
print(lastThree)

Output:

[1] "ple"

Note: The negative values count backward from the last character, so in above example -3 returns last 3 characters.

You can also get the last 2 characters of a string like this:

library(stringi)

name = 'apple'
lastTwo = stri_sub(name,-2)
print(lastTwo)

Output:

[1] "le"

You can install it on CRAN by using:

install.packages("stringi")

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