combined <- data.frame(mnv=my.numeric.vec[df1$fileName], type=df1$type) sorted <- combined[order(rownames(combined)),]
On Wed, Jul 11, 2012 at 8:38 AM, Adrian Johnson <oriolebaltim...@gmail.com> wrote: > Hi: > I am trying to map column names of a matrix to another data frame and > get values in a different column of data frame > > > I have a matrix m. > >> my.numeric vec <- m[1,] > >> my.numeric.vec > a b c d e f > 2 1 4 9 10 3 > > > > ## my data frame = df1 > >> df1 > > fileName type status > b N alive > a T dead > d N alive > c T dead > f N alive > e T dead > > > I want to combine as.numeric.vec and df1 and create j with correct > filename and type and numeric value > >>j > > my.numeric.vec type > a 2 T > b 1 N > c 4 T > d 9 N > e 10 T > f 3 N > > How can I combine my.numeric.vec and df1$type > > when I try: > > df1[df1$fileName %in% names(my.numeric.vec),2] > > I get wrong answer. > > > thanks in advance. > > Adrian > > ______________________________________________ > 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.
