Is this what you want: > dataDF = data.frame(A1 = c("B", "A", "C"), A2 = c(1,2,3)) > dataDF A1 A2 1 B 1 2 A 2 3 C 3 > dataDF[order(dataDF$A1),] A1 A2 2 A 2 1 B 1 3 C 3 >
If you want the sequence "CAB" then you will have to change the factors in column 1: > dataDF$A1 <- factor(dataDF$A1, levels=c("C", "A", "B")) > dataDF[order(dataDF$A1),] A1 A2 3 C 3 2 A 2 1 B 1 > On Tue, Dec 1, 2009 at 10:36 PM, Hao Cen <h...@andrew.cmu.edu> wrote: > Hi, > > > > I have a a vector and a data frame with two columns > > vec = c("C", "A", "B") > > dataDF = data.frame(A1 = c("B", "A", "C"), A2 = c(1,2,3)) > > > > I would like to sort the data frame by column A1 such that the order of > elements in A1 is as the same as in vec. > > > > After the ordering, the data frame would be > > A1 A2 > > C 3 > > A 2 > > B 1 > > > > Any suggestions would be appreciated. > > > > Thanks in advance > > > > Jeff > > > [[alternative HTML version deleted]] > > ______________________________________________ > 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. > -- Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem that you are trying to solve? ______________________________________________ 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.