[R] How to assigen column of matrix
Thomas Lumley
tlumley at u.washington.edu
Mon Apr 21 17:25:50 CEST 2003
On Mon, 21 Apr 2003, Minghua Yao wrote:
>
> Hi,
>
> A simple question.
>
> I want to assign values to columns (or rows) of a matrix.
>
> It seems that
> AA[,i]<-A; # A is a vector or array;
> doesn't work.
>
It seems that it does work for me:
> AA<-matrix(1:4,2)
> AA
[,1] [,2]
[1,] 1 3
[2,] 2 4
> A<-c(10,11)
> AA[,2]<-A
> AA
[,1] [,2]
[1,] 1 10
[2,] 2 11
if that's what you were trying to do. Note that command lines in R don't
end with a ;, but in this case it doesn't matter.
-thomas
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