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.