Why loop?
matrix(rep(3:0, each = 5), ncol = 5, byrow = TRUE)
[,1] [,2] [,3] [,4] [,5]
[1,] 3 3 3 3 3
[2,] 2 2 2 2 2
[3,] 1 1 1 1 1
[4,] 0 0 0 0 0
HTH,
Dennis
On Tue, May 10, 2011 at 11:10 AM, Chris English <sgl...@hotmail.com> wrote:
>
> Dear List,
> I am trying to populate a matrix using a for loop.This works.
>> four<- matrix(nrow=4,ncol=5)> for (j in 1:ncol(four)){+ for (i in
>> 1:nrow(four)){+ four[i,j]<-i-1}+ }> print(four) [,1] [,2] [,3] [,4]
>> [,5][1,] 0 0 0 0 0[2,] 1 1 1 1 1[3,] 2 2
>> 2 2 2[4,] 3 3 3 3 3
> What I would like is the inverse ofthe above, i.e.: [,1] [,2] [,3] [,4]
> [,5][1,] 3 3 3 3 3[2,] 2 2 2 2 2[3,] 1
> 1 1 1 1[4,] 0 0 0 0 0
> and can't seem to get there. Thanks,Chris
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