Try something like rm(list=ls(pattern="y+"))
John 2009/2/10 stephen sefick <ssef...@gmail.com>: > It depends on how the data is set up (I am not an expert), but I have > had good results with the subset function. subset(x, var!=3 & var!=4) > this will take the subset of the dataframe x where var is not equal > to 3 or 4. > > a <- rnorm(25) > var <- rep(c(1:5), 5) > x <- data.frame(a, var) > subset(x, var!=3 & var!=4) > > Is this what you want? > > Stephen Sefick > > On Mon, Feb 9, 2009 at 7:27 PM, jjh21 <jjhar...@gmail.com> wrote: >> >> Hello, >> >> I am trying to do some data cleaning in R. I need to drop observations that >> take on certain values of a variable. In STATA I might type something like: >> >> drop if <variable name> == 3 >> drop if <variable name> == 4 >> >> Is there an R equivalent of this? I have tried playing around with the >> subset command, but it seems a bit clunky. What would an advanced R user's >> approach be for something like this? >> >> Thank you! >> >> >> -- >> View this message in context: >> http://www.nabble.com/What-is-the-R-equivalent-of-STATA%27s-%27drop%27-command--tp21925249p21925249.html >> Sent from the R help mailing list archive at Nabble.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. >> > > > > -- > Stephen Sefick > > Let's not spend our time and resources thinking about things that are > so little or so large that all they really do for us is puff us up and > make us feel like gods. We are mammals, and have not exhausted the > annoying little problems of being mammals. > > -K. Mullis > > ______________________________________________ > 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. > -- John C Frain Trinity College Dublin Dublin 2 Ireland www.tcd.ie/Economics/staff/frainj/home.html mailto:fra...@tcd.ie mailto:fra...@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.