On 27-11-2012, at 23:17, Steven Ranney wrote: > All - > > I have a data frame > > data.a > ID valueA valueB > 6 12 12 > 17 15 14 > 58 18 16 > 98 11 12 > 73 19 20 > 84 19 14 > 58 20 14 > 24 11 12 > 81 15 16 > 21 15 14 > 62 14 12 > 67 13 14 > 78 13 17 > 35 10 13 > 13 11 15 > 14 17 18 > 85 16 15 > 35 13 9 > 18 15 16 > > and a data frame > > data.b > ID valueA valueB > 6 > 84 > 21 > 78 > 14 > > I'd like to have R find the data.b$ID in data.a$ID and insert the > corresponding data.a$valueA and data.a$valueB into the appropriate > columns in data.b. > > How can I do this?
data.b <- data.a[which(data.a$ID %in% data.b$ID), ] Berend ______________________________________________ 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.
