Re: [R] Simple regex problem

From: John Kane <jrkrideau_at_yahoo.ca>
Date: Tue, 13 May 2008 09:53:09 -0400 (EDT)


Thanks to Gabor Grothendieck & Ted Harding. both solutions work very nicely.

> Try this (no gsub required):
>
> as.chron(as.Date(xx, "%b %d, %Y"))
>
> On Sat, May 10, 2008 at 12:49 PM, John Kane
> <jrkrideau_at_yahoo.ca> wrote:
> > I am cleaning up some character data to convert to
> > dates using chron. The regex that I am using work
> fine
> > but there should be a better way to do this. Can
> > anyone suggest a cleaner bit of code than the
> gsub,
> > sub approach? Thanks
> >
> > #Test Run on dates.
> > xx <- c("May 1, 2007",
> > "May 2, 2007",
> > "May 3, 2007",
> > "May 4, 2007",
> > "May 5, 2007",
> > "May 6, 2007",
> > "May 7, 2007",
> > "May 8, 2007",
> > "May 9, 2007",
> > "May 10, 2007",
> > "May 11, 2007",
> > "May 12, 2007")
> > yy <- gsub(" +", "/", xx) ; yy
> > zz <- sub(",", "", yy) ; zz
> > library(chron)
> > ttdates <- chron(zz, format = c(dates =
> "mon/d/y"))
> >
> > ______________________________________________
> > R-help_at_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.
> >
>



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