Hi All, Just to make that question a bit harder - how do I apply that string extraction to vector of these time strings?
Thanks, Matt Redding >-----Original Message----- >From: [EMAIL PROTECTED] >[mailto:[EMAIL PROTECTED] On Behalf Of Redding, Matthew >Sent: Thursday, 16 October 2008 7:54 AM >To: r-help@r-project.org >Subject: [R] strsplit and regex > >Hi All, > >Is there a means to extract the "10" from "23:10:34" in one >pass using strsplit (or something else)? >tst <- "23:10:34" > >For example my attempt >strsplit(as.character(tst),"^[0-9]*:") >gives >[[1]] >[1] "" "" "34" > >Obviously it is matching the first two instances of [0-9]. >Note that there may be only one digit before the first ":". > >How do I anchor the match to the begginning or better still, >just extract the number I want in one pass? > >I can see that I can add "begin" to the beginning of the >string, and match that and do something similar at the end, >getting rid of empty strings etc - but I think it would take >about 3 passess - and the files are large. And besides that >code would be unlovely. > >Kind regards, > > >Matt Redding >********************************DISCLAIMER**************...{{dr >opped:15...{{dropped:19}} ______________________________________________ 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.
