[R] Problem with the str_replace function

Bert Gunter bgunter@4567 @end|ng |rom gm@||@com
Wed Mar 17 02:23:03 CET 2021

I prefer using regular expressions directly, so this may not satisfy you:

> a <-"Women's footwear (excluding athletic)"
> b <- gsub("(.*) \\(.*$","\\1",a)
> b
[1] "Women's footwear"

There are, of course other ways to do this with regex's or even substring()

Bert Gunter

"The trouble with having an open mind is that people keep coming along and
sticking things into it."
-- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )

On Tue, Mar 16, 2021 at 5:36 PM <phil using philipsmith.ca> wrote:

> I have a problem with the str_replace() function in the stringr package.
> Please refer to my reprex below.
> I start with a vector of strings, called x. Some of the strings contain
> apostrophes and brackets. I make a simple replacement as with x1, and
> there is no problem. I make another simple replacement, x2, where the
> pattern string has an apostrophe. Again no problem. Then I make a third
> replacement, x3, where the pattern has opening and closing brackets and
> the function still works fine. Finally I make a replacement where the
> pattern has both an apostrophe and opening and closing brackets and the
> replacement does not work. I tried to solve this by putting backslashes
> before the apostrophe and/or the brackets, but that accomplished
> nothing. I am stumped.
> # Reprex for str_replace problem
> library(stringr)
> x <- c(
>    "Clothing and footwear",
>    "Women's clothing",
>    "Women's footwear (excluding athletic)",
>    "Clothing accessories (belts and so on)",
>    "Clothing and footwear",
>    "Women's clothing",
>    "Women's footwear (excluding athletic)",
>    "Clothing accessories (belts and so on)"
> )
> x
> x1 <- str_replace(x,
>    "Clothing and footwear",
>    "Clothing and shoes"
> )
> x1
> x2 <- str_replace(x,
>    "Women's clothing",
>    "Women's clothing goods"
> )
> x2
> x3 <- str_replace(x,
>    "Clothing accessories (belts and so on)",
>    "Clothing accessories")
> x3
> x4 <- str_replace(x,
>    "Women's footwear (excluding athletic)",
>    "Women's footwear")
> x4
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