Dear list, Is there a generalised form of rbind/cbind for combining matrices/arrays into higher-D structures? ie. if I have: a <- matrix(2,2,2) b <- matrix(3,2,2) how can I get array(rep(c(3,2), each=4), c(2,2,2)) ? It seems like this would be the job of a generalised abind function: abind(a,b, along=1) == rbind(a,b) abind(a,b, along=2) == cbind(a,b) abind(a,b, along=3) ==array(rep(c(3,2), each=4), c(2,2,2)) Thanks, Hadley
Generalised rbind/cbind
2 messages · Hadley Wickham, Marc Schwartz
On Fri, 2005-10-21 at 17:42 -0500, hadley wickham wrote:
Dear list, Is there a generalised form of rbind/cbind for combining matrices/arrays into higher-D structures? ie. if I have: a <- matrix(2,2,2) b <- matrix(3,2,2) how can I get array(rep(c(3,2), each=4), c(2,2,2)) ? It seems like this would be the job of a generalised abind function: abind(a,b, along=1) == rbind(a,b) abind(a,b, along=2) == cbind(a,b) abind(a,b, along=3) ==array(rep(c(3,2), each=4), c(2,2,2)) Thanks, Hadley
Hadley, You just described the abind() function in the 'abind' package by Tony Plate and Richard Heiberger. HTH, Marc Schwartz