There are many resources for learning regular expressions (e.g.
http://gnosis.cx/publish/programming/regular_expressions.html). Once you
understand the basics you will probably be able to refer to the ?regex help
page for specific tools. After you have waded through a tutorial, the following
explanation should make more sense.
The braces are extended regex syntax for a repetition of a pattern by some
minimum to some maximum number of times. The pattern immediately precedes the
repetition specification. In the first case of {0,1} the pattern being repeated
is the comma, and in the second case it is any of the characters in the square
brackets (a period in this case). The period is a special "match any character"
pattern when not part of a set of characters. A common shorthand for zero or
one of something is a + symbol.
Also, please learn to provide quoting context for the majority of us who do not
use Nabble.
---------------------------------------------------------------------------
Jeff Newmiller The ..... ..... Go Live...
DCN:<jdnew...@dcn.davis.ca.us> Basics: ##.#. ##.#. Live Go...
Live: OO#.. Dead: OO#.. Playing
Research Engineer (Solar/Batteries O.O#. #.O#. with
/Software/Embedded Controllers) .OO#. .OO#. rocks...1k
---------------------------------------------------------------------------
Sent from my phone. Please excuse my brevity.
mdvaan <mathijsdev...@gmail.com> wrote:
>Thanks! That works like a charm, but I am not sure if I fully
>understand the
>syntax. I looked at the gsub page but still couldn't figure it out.
>What
>does the pattern part (",{0,1} Inc[.]{0,1}") do? What do the 0 and 1
>within
>the curly brackets refer to? Also, what if, for example, I would want
>to
>remove the word "Energy"?
>
>Thank you very much in advance.
>
>Math
>
>--
>View this message in context:
>http://r.789695.n4.nabble.com/gsub-strsplit-with-multiple-patterns-splits-tp4631873p4631897.html
>Sent from the R help mailing list archive at Nabble.com.
>
>______________________________________________
>R-help@r-project.org mailing list
>https://stat.ethz.ch/mailman/listinfo/r-help
>PLEASE do read the posting guide
>http://www.R-project.org/posting-guide.html
>and provide commented, minimal, self-contained, reproducible code.
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
