Re: [R] A one-liner to create a 3-dim array

From: Rolf Turner <rolf_at_math.unb.ca>
Date: Tue 26 Jul 2005 - 04:24:01 EST

        B <- array(apply(A,1,function(x){x%o%x}),dim=c(nrow(A),dim(A)))

                                cheers,

					Rolf Turner
					rolf@math.unb.ca

Ravi Varadhan wrote:

> I would like to write a one-line R code to create a 3-dim array, B, of
> dimension (n,n,m) from a matrix, A, of dimension (m,n) such that the i-th
> element of the 3-dim array, B[, , i] is the outer product of the i-th row
> of A.



R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Tue Jul 26 04:33:58 2005

This archive was generated by hypermail 2.1.8 : Fri 03 Mar 2006 - 03:34:01 EST