[R] cbind, row names
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)) ) Could you please help? Thank you Sören __ 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.
Re: [R] cbind, row names
This gives what you want: rbind.data.frame( x=cbind(N=length(x), M=mean(x), SD=sd(x)), y=cbind(N=length(y), M=mean(y), SD=sd(y)) ) On Fri, Jan 29, 2010 at 8:49 AM, 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)) ) Could you please help? Thank you Sören __ 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. -- Henrique Dallazuanna Curitiba-Paraná-Brasil 25° 25' 40 S 49° 16' 22 O __ 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.
Re: [R] cbind, row names
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.
