Re: [R] Reorder data frame columns by negating list of names

Thompson, David (MNR) wrote: > Hello, > > I would like to reorder columns in a data frame by their names as > demonstrated below: > > Take this data frame: > > xxx <- data.frame(matrix(1:40, ncol=8)) > > names(xxx) <- letters[1:8] > > xxx > a b c d e f g h >

Re: [R] Reorder data frame columns by negating list of names

try this: > x <- read.table(textConnection(" a b c d e f g h +1 1 6 11 16 21 26 31 36 +2 2 7 12 17 22 27 32 37 +3 3 8 13 18 23 28 33 38 +4 4 9 14 19 24 29 34 39 +5 5 10 15 20 25 30 35 40"), header=TRUE) > # initial columns > init.cols <- c('b',

Re: [R] Reorder data frame columns by negating list of names

one way is the following: xxx <- data.frame(matrix(1:40, ncol=8)) names(xxx) <- letters[1:8] ind <- c('b', 'd', 'h') nams <- names(xxx) xxx[c(ind, nams[!nams %in% ind])] I hope it helps. Best, Dimitris Dimitris Rizopoulos Ph.D. Student Biostatistical Centre School of Public Health Cathol