On 1/21/2008 5:18 AM, Karin Lagesen wrote: > Example data frame: > > > a = c("Alpha", "Beta", "Gamma", "Beeta", "Alpha", "beta") > b = c(1:6) > example = data.frame("Title" = a, "Vals" = b) > > >> example > Title Vals > 1 Alpha 1 > 2 Beta 2 > 3 Gamma 3 > 4 Beeta 4 > 5 Alpha 5 > 6 beta 6 > > I would like to be able to get a new data frame from this data frame > containing only rows that match a certain string. In this case it > could for instance be the string "eta". I have tried various ways of > using agrep and grep, but so far I have not found anything that > worked. > > Thankyou in advance for your help!
a <- c("Alpha", "Beta", "Gamma", "Beeta", "Alpha", "beta") b <- c(1:6) df <- data.frame(Title = a, Vals = b) df[grep("eta", df$Title),] Title Vals 2 Beta 2 4 Beeta 4 6 beta 6 > Karin -- Chuck Cleland, Ph.D. NDRI, Inc. 71 West 23rd Street, 8th floor New York, NY 10010 tel: (212) 845-4495 (Tu, Th) tel: (732) 512-0171 (M, W, F) fax: (917) 438-0894 ______________________________________________ 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.