Talbot Katz wrote: > Hi. > > I am using R 2.5.1 on a Windows XP machine. Here is an example of a piece > of code I was running in older versions of R on the same machine. I am > looking for underscores and replacing them with periods. This result is > from R 2.4.1: > >> gsub ( "\\_+","\.","AAA_I") > [1] "AAA.I" > > Here is what I get in R 2.5.1: > >> gsub ( "\\_+","\.","AAA_I") > [1] "AAA.I" > Warning messages: > 1: '\.' is an unrecognized escape in a character string > 2: unrecognized escape removed from "\." > > I still get the same result, which is what I want, but now I get a warning > message. Am I actually doing something wrong that the previous versions of > R didn't warn me about? Or is this warning message unwarranted? Is there a > fully approved method for getting the same functionality? Thanks!
Yes, correct usage is either gsub ( "\\_+", ".", "AAA_I") or gsub ( "\\_+", "\\.", "AAA_I") Uwe Ligges > -- TMK -- > 212-460-5430 home > 917-656-5351 cell > > ______________________________________________ > R-help@stat.math.ethz.ch 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@stat.math.ethz.ch 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.