Trim a string to a specific number of characters in R

问题

I would like to trim a character vector to the first five characters in each element. In this example I would like to trim each number in string to the first five characters. I am sure there must be an easy way to do this.

string<-
c("3243423",
"23423",
"34243234",
"2342",
"32544532",
"85678657") 

I would like to have a a vector

c("32434",
"23423",
"34243",
"2342",
"32544",
"85678")

回答1:

The following works as well (didn't know about strtrim)

substring(string, 1, 5)

回答2:

Figured it out. Hope this is helpful.

strtrim(string, 5)

回答3:

stri_sub function from stringi package

stri_sub("123456789",1,4)
## [1] "1234"

来源：https://stackoverflow.com/questions/22331720/trim-a-string-to-a-specific-number-of-characters-in-r