Hi all, I would like to subset a dataframe by using part of the level name.
x <- rep(LETTERS[1:20],3) y <- rep(1:3, 20) z <- paste(x,y, sep="") random.data <- rnorm(60) data <- as.data.frame(cbind(z, random.data)) I need rows that contain the letters A to J, so I tried: subset(data, grepl(LETTERS[1:10], z)) # got only rows with A subset(data, z %in% LETTERS[1:10]) # got no rows I think I'm getting close to the solution but need a little bit of help here, thanks in advance. Kang Min ______________________________________________ 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.
