Hi All, If I need to stack two data frames, I can use rbind, but it requires that all variables exist in both sets. I can make that happen, but other stat packages would figure out where the differences were, add the missing variables to each, set their values to missing and stack them. Is there a more automatic way to do that in R?
Below is an example program. Thanks, Bob # Top data frame has two variables. x <- c(1,2) y <- c(1,2) top <- data.frame(x,y) top # Bottom data frame has only one of them. x <- c(3,4) bottom <- data.frame(x) bottom # So rbind won't work. rbind(top, bottom) # After figuring out where the mismatches are I can # make the two DFs the same manually. bottom <- data.frame( bottom, y=NA) bottom # Now I get the desired result. both <- rbind(top,bottom) both ========================================================= Bob Muenchen (pronounced Min'-chen), Manager Statistical Consulting Center U of TN Office of Information Technology 200 Stokely Management Center, Knoxville, TN 37996-0520 Voice: (865) 974-5230 FAX: (865) 974-4810 Email: [EMAIL PROTECTED] Web: http://oit.utk.edu/scc, News: http://listserv.utk.edu/archives/statnews.html ______________________________________________ R-help@stat.math.ethz.ch 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.
