Hi,
gsub("#%", "[percentagevalue]", text1)
#[1] "this is a number 23%"
gsub("\\d+%$", "[percentagevalue]", text1)
#[1] "this is a number [percentagevalue]"
gsub("bla", "23", text2)
#[1] "this is not a number 23%"
A.K.
----- Original Message -----
From: Simon Pickert <simon.pick...@t-online.de>
To: r-help@r-project.org
Cc:
Sent: Wednesday, September 4, 2013 11:17 AM
Subject: [R] Placeholders for String Operations
Hi all,
what are the placeholders for string operations/modifications? Is there a
placeholder for numbers, which would allow me to easily replace all numbers in
a string? Something like
text1 <- c("this is a number 23%")
text2 <- c("this is not a number bla%")
newtext1 <- gsub(#%, [percentagevalue], text)
newtext2 <- gsub(#%, [percentagevalue], text)
newtext1 should be "this is a number [percentagevalue]"
newtext2 should be "this is not a number 23%"
I figured there is * ? . but I can't find a source that explains their use and
lists other placeholders..
Appreciate your help!
Thanks
Simon
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and provide commented, minimal, self-contained, reproducible code.
