thanks.... that makes sense... in the previous version of R it worked for some reason.
On Thu, Aug 13, 2015 at 4:33 PM, Sarah Goslee <sarah.gos...@gmail.com> wrote: > Hi, > > The + is a special character in regular expressions. If you want to > match a literal + you need to escape it: > > str_extract("+proj=utm +zone=19 +datum=WGS84 +units=m +no_defs > +ellps=WGS84 +towgs84=0,0,0", "\\+proj=[a-zA-Z0-9]*") > > Sarah > > > On Thu, Aug 13, 2015 at 2:55 PM, Mauricio Romero > <mauricioromerolond...@gmail.com> wrote: > > Hi, > > > > I'm running R 3.2.1 and im having an unexpected problem... when I run the > > follwing code it returns an error > > > > library(stringr) > > str_extract("+proj=utm +zone=19 +datum=WGS84 +units=m +no_defs > +ellps=WGS84 > > +towgs84=0,0,0", "+proj=[a-zA-Z0-9]*") > > > > But I can't find whats wrong with my code. > > > > Thanks > > > > Mauricio > > > [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.