Hello, Right, thanks for the explanation, it saved me time.
Rui Barradas Em 18-01-2013 22:50, David Alston escreveu:
Greetings! I hope you don't mind, Rui Barradas, but I'd like to explain the regex. Parsing it was a fun exercise! Here's the regex broken into two parts.. [[:alpha:]_]* = match zero or more alphabet or underscore characters (.*) = match zero or more characters and add them to \1 pattern buffer Going character by character through the date string "asdf May 09 2009" "asdf" matches the first part "May 09 2009" matches the second part and is stored in the \1 pattern buffer The gsub command - gsub("[[:alpha:]_]*(.*)", "\\1", Text) - replaces the entire string (because this regex matches the entire string.. they all begin with a sequence of alphabet and/or underscore characters and the ".*" pattern at the end matches the rest of the line) with the contents of the \1 pattern buffer and stores it in the variable "Text". If the length of the string prepended to the date is consistent another possible solution would be - gsub(".{5}(.*)", "\\1", Text) - which would strip off the first five characters (".{5}" matches five "any" characters). --David Alston "Without rules there is no game for it is by the rules the game is defined." --SOv On Fri, Jan 18, 2013 at 3:05 PM, Christofer Bogaso <bogaso.christo...@gmail.com> wrote:Thanks Rui for your help. Could you also explain the underlying logic please? Thanks and regards, On Sat, Jan 19, 2013 at 2:43 AM, Rui Barradas <ruipbarra...@sapo.pt> wrote:gsub("[[:alpha:]_]*(.*)", "\\1", Text)______________________________________________ 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.
