CODEWITHSUNDEEP
rstring
John legend2
John legend2

Reputation: 920

split a string with a plus sign separated in R

I wanted to split a string with "+" separated one and used strsplit as below but it doesn't work. Here is the example

strsplit("aa + bb + cc", split = "+")

It shows character splitted one like this. Why doesn't it work?

[1] "a" "a" " " "+" " " "b" "b" " " "+" " " "c" "c"

How can I get this?

c("aa", "bb","cc")

Upvotes: 1

Views: 369

Answers (3)

akrun
akrun

Reputation: 887068

An option with scan from base R

scan(text = "aa + bb + cc", what = "", sep= "+", strip.white = TRUE, quiet = TRUE)
#[1] "aa" "bb" "cc"

Upvotes: 1

Mike V
Mike V

Reputation: 1364

Or you can try this way

library(stringr)
str_split("aa + bb + cc","[\\s\\+]+")
#[1] "aa" "bb" "cc"

Upvotes: 1

Tim Biegeleisen
Tim Biegeleisen

Reputation: 521093

I would use:

strsplit("aa + bb + cc", "\\s*\\+\\s*")[[1]]

[1] "aa" "bb" "cc"

The + symbol is a regex metacharacter, and so needs to be escaped. If you also want to isolate the terms being added, then add optional whitespace on either side of the +.

Upvotes: 1

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