Also, gsub() can change the case of part a string -- use perl=TRUE and \\U or \\L (and perhaps \\E) in the replacement string. E.g., capitalize color names with > gsub(paste(sep="", "(", paste(colors(),collapse="|"), ")"), "\\U\\1", "The quick red Fox jumped over the lazy brown Dog", perl=TRUE) [1] "The quick RED Fox jumped over the lazy BROWN Dog"
Bill Dunlap Spotfire, TIBCO Software wdunlap tibco.com > -----Original Message----- > From: r-help-boun...@r-project.org > [mailto:r-help-boun...@r-project.org] On Behalf Of Greg Snow > Sent: Friday, December 17, 2010 1:19 PM > To: Erin Hodgess; R help > Subject: Re: [R] lower/upper case question > > See ?toupper for the toupper, tolower, chartr, and casefold functions. > > -- > Gregory (Greg) L. Snow Ph.D. > Statistical Data Center > Intermountain Healthcare > greg.s...@imail.org > 801.408.8111 > > > > -----Original Message----- > > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r- > > project.org] On Behalf Of Erin Hodgess > > Sent: Friday, December 17, 2010 2:10 PM > > To: R help > > Subject: [R] lower/upper case question > > > > Dear R People: > > > > Is there a function to convert a character string to all > uppercase or > > all lowercase please? > > > > I'm sure that I've used one before but I'm drawing a blank. > > > > Thanks, > > Erin > > > > > > -- > > Erin Hodgess > > Associate Professor > > Department of Computer and Mathematical Sciences > > University of Houston - Downtown > > mailto: erinm.hodg...@gmail.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. > ______________________________________________ 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.