Question 22339 in SEO Question posted in
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how to use gsub for "nn" correctly? – SEO

Using gsub(), I want to replace "nn" to "" in this text:

mystring<-"People Storm Seonul Airport as Citizens Leave\n\nCHOI JEONGHO\n\nSEOUL, South Korea, Jan. 31"

But, when I ran gsub("[r\n]", " ", mystring), it deletes all n in the text.

The output was:

"People Storm Seo ul  Airport as Citize s Leave    CHOI JEO GHO    SEOUL, South Korea, Ja . 31"

Could you teach me why it is so and how to delete only "nn"?

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2

Answers


  1. 0
    1. You don’t want to use brackets because you’re trying to match a sequence of characters — brackets will match any of the characters individually, which is how you end up with no ns.
    2. To match a literal \n, you need to escape both backslashes, giving you \\n.
    gsub("(r)|(\\n)", " ", mystring)

# "People Storm Seonul Airport as Citizens Leave  CHOI JEONGHO  SEOUL, South Korea, Jan. 31"
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  2. 0

    Here’s an option with the stringr package. In R, you need to escape backslashes using \, so you’ll need to use \\n as your argument:

    stringr::str_remove_all(mystring, "\\n")

"People Storm Seonul Airport as Citizens LeaveCHOI JEONGHOSEOUL, South Korea, Jan. 31"
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