Matt, library(reshape2) wide.df <- dcast(df, y ~ x)
Works great for me. Jonathan On Wed, Dec 8, 2010 at 7:26 PM, Matthew Pettis <matthew.pet...@gmail.com> wrote: > Hi, > > I was wondering if there is an easy way that I am missing for turning a long > dataframe into a wide one. Below is sample code that will make what I have > and, in comments, the form of what I want: > > # Have: dataframe like 'df' > df <- expand.grid( x=LETTERS[1:3], y=LETTERS[4:6]) > df$z <- letters[1:length(df[,1])] > > # Want: data.frame that has following form: > # A B C > # D a b c > # E d e f > # F g h i > > > I looked at 'xtabs' and 'cast' from reshape/reshape2, but unless I'm > misunderstanding something, these will work only for the 'z' column being > numeric, not textual. Is there an easy way to do this with 'z' being > textual rather than numeric? > > tia, > Matt > > [[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. > ______________________________________________ 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.
