In this tutorial, we are going to learn about how to get the first character of a string in the R language.
We can get the first character of a string by using 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 character
g from the
color = 'green' firstCharacter = substr(name,1,1) print(firstCharacter)
In the above example, we have passed the
1 , 1 as second and third arguments to the
substr() function. so it begins the extraction at index position
1, ends at index position
substr()function doesn’t mutate the original string.
You can also read, how to get first n characters of string in R.