thanks!
Now I have one more question; How can I do the reverse? when %in% is == (for two vectors of different lengths); what is the equivalent to != ? On 21.03.2010, at 22:33, Erik Iverson wrote: > Martin Batholdy wrote: >> Hi, >> I would like to compare a column of data with a vector. >> I have this data.frame for example; >> x <- data.frame(A = c(1:5), B = c(1,1,2,2,2)) >> Now I have a search vector: >> search <- c(1,3,5) >> when I now try to get all the data-rows which have a 1, a 3, or a 5 in >> column A and a 2 in column B, I tried this: >> x[x$B == 2 & x$A == search,] >> I hoped to get 3 2 >> 5 2 >> as output. > > See ?%in% > > x[x$B == 2 & x$A %in% search, ] > > ______________________________________________ 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.
