Apologies for confusion. What I meant was the following: mytext <- "I want the number 2000, not the number two thousand"
and the problem is to select "2000" as the first four digits after the word "number". The position of 2000 in the string might change. thanks Lorenzo -----Original Message----- From: Steven Kennedy [mailto:stevenkennedy2...@gmail.com] Sent: Friday, 26 August 2011 11:31 AM To: Henrique Dallazuanna Cc: Lorenzo Cattarino; r-help@r-project.org Subject: Re: [R] string manipulation You can split your string, and then only take the first 4 digits after that (this is only an improvement if your numbers might not be at the end of mytext): mytext <- "I do not want the first number 1234, but the second number 5678" sstr<-strsplit(mytext,split="second number ")[[1]][2] nynumbers<-substr(sstr,1,4) On Fri, Aug 26, 2011 at 11:18 AM, Henrique Dallazuanna <www...@gmail.com> wrote: > Try this: > > gsub(".*second number ", "", mytext) > > On Thu, Aug 25, 2011 at 8:00 PM, Lorenzo Cattarino > <l.cattar...@uq.edu.au> wrote: >> I R-users, >> >> I am trying to find the way to manipulate a character string to select a 4 >> digit number after some specific word/s. Example: >> >> mytext <- "I do not want the first number 1234, but the second number 5678" >> >> Is there any function that allows you to select a certain number of digits >> (in this case 5678) after a particular word/s (e.g., second number) >> >> Thank you for your help >> >> Lorenzo >> >> >> [[alternative HTML version deleted]] >> >> ______________________________________________ >> 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. >> > > > > -- > Henrique Dallazuanna > Curitiba-Paraná-Brasil > 25° 25' 40" S 49° 16' 22" O > > ______________________________________________ > 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.
