> my.df <- data.frame(IDX=1:42, x=rnorm(1:42)) > my.df[my.df$IDX %in% c(17, 42), ] IDX x 17 17 -0.5110095 42 42 -1.0686427
Garrett On Thu, Mar 15, 2012 at 3:25 PM, Ed Siefker <ebs15...@gmail.com> wrote: > I would like to subset by dataframe by matching all rows that have any value > from a list of values. I can get it to work if I have exactly one value, > I'm not > sure how to do it with a list of values though. > > This works and gives me exactly one line: > my.df[ which( mydf$IDX==17)), ] > > I would like to do something like this: > my.df[ which( mydf$IDX==c(17, 42), ] > > Obviously that won't work, but I hope the meaning is clear. > What's the right way to express this? > > [[alternative HTML version deleted]] > > ______________________________________________ > 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.
