In this tutorial, we are going to learn about how to get the first n characters from a string in the R language.
To get the first n characters from a string, we can use the built-in
substr() function in R.
substr()function takes 3 arguments, the first one is a string, the second is start position, third is end position.
Here is an example, that gets the first 2 characters from a string:
name = 'orange' firstTwo = substr(name,1,2) print(firstTwo)
Note: The negative values count backward from the last character.
You can also get the first 3 characters of a string like this:
name = 'orange' firstThree = substr(name,1,3) print(firstThree)