[R] Regular expression help
georges at yorku.ca
Tue Oct 10 03:08:20 CEST 2017
How about this (I'm showing it as a pipe because it's easier to read
"f 147/1315/587 2820/1320/587 3624/1321/587 1852/1322/587" %>%
strsplit(' ') %>%
paste(collapse = ' ')
Georges Monette, PhD P.Stat.(SSC) | Associate Professor. Faculty of Science, Department of Mathematics & Statistics | North 626 Ross Building | York University | 4700 Keele Street, Toronto, ON M3J 1P3 | Telephone: 416-736-5250 | Fax: 416-736-5757 | E-Mail: georges at yorku.ca
On 2017-10-09 11:02 AM, Duncan Murdoch wrote:
> I have a file containing "words" like
> where there may be multiple words on a line (separated by spaces).
> The a, b, and c strings can contain non-space, non-slash characters.
> I'd like to use gsub() to extract the c strings (which should be empty
> if there are none).
> A real example is
> "f 147/1315/587 2820/1320/587 3624/1321/587 1852/1322/587"
> which I'd like to transform to
> " 587 587 587 587"
> Another real example is
> "f 1067 28680 24462"
> which should transform to " ".
> I've tried a few different regexprs, but am unable to find a way to
> say "transform words by deleting everything up to and including the
> 2nd slash" when there might be zero, one or two slashes. Any
> Duncan Murdoch
> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
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> and provide commented, minimal, self-contained, reproducible code.
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