[R] Dataset to single column matrix
r.turner at auckland.ac.nz
Wed Jan 8 03:41:23 CET 2014
On 08/01/14 15:09, Ista Zahn wrote:
> On Tue, Jan 7, 2014 at 8:30 PM, Pete Brecknock <Peter.Brecknock at bp.com> wrote:
>> Krishia wrote
>>> I am pretty new to R and would like to transform my 272x12 matrix into a
>>> 3264X1. I'm trying to have the setup change from:
>>> 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12
>>> 13,14,15,16,17,18,19,20,21,22, 23, 24
>>> Any suggestions?
>>> Thanks in advance
>> Is this what you are looking for?
>> # Create example matrice
>> m <- matrix(c(1,2,3,4,5,6,7,8,9,10,11,12), nrow=4, byrow=TRUE)
>> # Create vector
>> v <- c(t(m))
> Or just
> dim(m) <- NULL
No. That produces column-by-column order, and it appears that the OP
wanted row-by-row order, which is what Peter's solution gives.
BTW it is considered more "politically correct" to use as.vector(M)
rather than c(M) to turn a matrix into a vector, although the result is
exactly the same.
More information about the R-help