Extract characters after particular pattern in r

Question

I have a column in which i want to extract characters which are before x from right hand side. Sample strings in column is ABCDx1234xaP_solution. I need to extract aP_solution.

score 2 · Answer 1 · answered Apr 02 '20 at 09:24

2

A simple solution using sub could be to remove everything until last 'x'.

sub('.*x', '', 'ABCDx1234xaP_solution')
#[1] "aP_solution"

answered Apr 02 '20 at 09:24

Ronak Shah

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1

Much better than mine, I forgot that regex's are greedy. – Rui Barradas Apr 02 '20 at 09:26

score 1 · Answer 2 · answered Apr 02 '20 at 09:24

1

The following regex will do it.

x <- "ABCDx1234xaP_solution"

sub("^.*x([^x]+$)", "\\1", x)
#[1] "aP_solution"

answered Apr 02 '20 at 09:24

Rui Barradas

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Extract characters after particular pattern in r

2 Answers2