On Apr 15, 2012, at 09:36 , Omphalodes Verna wrote: > Dear R helpers! > > I have a vector 'x1' and data.frame 'df1'. Do you have any suggestion how to > get vector x2, which will be a result of matching values from vector 'x1' and > values from 'df1'? Please, see the example: > > x1 <- c(rep(1,3), rep(NA,2), rep(2,4)) > df1 <- data.frame(c1 = c(1,2), c2 = c(5,6)) > > I would like to get vector x2: >> x2 > [1] 5 5 5 NA NA 6 6 6 6 > > Thanks a lot, OV
You mean like this? > df1$c2[match(x1, df1$c1)] [1] 5 5 5 NA NA 6 6 6 6 -- Peter Dalgaard, Professor, Center for Statistics, Copenhagen Business School Solbjerg Plads 3, 2000 Frederiksberg, Denmark Phone: (+45)38153501 Email: pd....@cbs.dk Priv: pda...@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.
