Hi! 29.01.2010 12:49, soeren.vo...@eawag.ch wrote: > Hello, > > I read the help as well as the examples, but I can not figure out why > the following code does not produce the *given* row names, "x" and "y": > > x <- 1:20 > y <- 21:40 > rbind( > x=cbind(N=length(x), M=mean(x), SD=sd(x)), > y=cbind(N=length(y), M=mean(y), SD=sd(y)) > ) >
Maybe because the cbinds in your code produce matrices: is.matrix(cbind("N"=length(x), "M"=mean(x), "SD"=sd(x))) [1] TRUE Quote ?rbind: "For cbind (rbind) the column (row) names are taken from the colnames (rownames) of the arguments if these are matrix-like." HTH, Kimmo ______________________________________________ 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.