[R] 'splice' two data frames

Hi, I often need to take columns from two data.frames and 'splice' them together (alternately taking a column from the first data frame, then from the second). For example: x - table(sample(letters[1:9], 100, replace=TRUE), sample(letters[1:4], 100, replace=TRUE)) y - prop.table(x)

Re: [R] 'splice' two data frames

what about: @ *= z-data.frame(matrix(rbind(x,y),nrow(x),2*ncol(x))) rownames(z)-rownames(x) z @ output-start Thu Aug 25 11:24:29 2005 X1 X2 X3 X4 X5 X6 X7 X8 a 2 0.02 1 0.01 2 0.02 2 0.02 b 3 0.03 0 0.00 4 0.04 3 0.03 c 3 0.03 2 0.02 1 0.01 6 0.06 d 3 0.03 4 0.04 2 0.02

Re: [R] 'splice' two data frames

Thank you! I think I can simplify the first line further to: z-data.frame(matrix(rbind(x,y),nrow(x))) i.e. remove 2 * ncol(x) Thanks. Dave Peter Wolf wrote: what about: @ *= z-data.frame(matrix(rbind(x,y),nrow(x),2*ncol(x))) rownames(z)-rownames(x) z @ output-start Thu Aug 25