In this tutorial, we are going to learn about how to get the last n characters from a string in R language.
To get the last n characters from a string, we can use the
stri_sub() function from a stringi package in R.
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)
Note: The negative values count backward from the last character, so in above example
-3returns 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)
You can install it on CRAN by using: