[R] lower/upper case question

[William Dunlap]

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-bounces at r-project.org 
> [mailto:r-help-bounces at 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.snow at imail.org
> 801.408.8111
> 
> 
> > -----Original Message-----
> > From: r-help-bounces at r-project.org [mailto:r-help-bounces at 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.hodgess at gmail.com
> > 
> > ______________________________________________
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> > https://stat.ethz.ch/mailman/listinfo/r-help
> > PLEASE do read the posting guide http://www.R-project.org/posting-
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> > and provide commented, minimal, self-contained, reproducible code.
> 
> ______________________________________________
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>