Jonas Malmros wrote:
> Hi, everyone
>
> I wonder if there is a function in R with which I can create a square
> matrix with elements off main diagonal (for example one diagonal below
> the main diagonal).
>
> Thanks in advance!
>
>
You could combine rbind, diag and cbind:
rbind(rep(0,3),cbind(diag(2),rep(0,2)))
rbind(rep(0,4),cbind(diag(3),rep(0,3)))
.......
A simple function:
belowDiagonal = function(x)
{
diagBelow=rbind(rep(0,length(x)+1),cbind(diag(x),rep(0,length(x))))
return(diagBelow)
}
belowDiagonal(7)
belowDiagonal(1:5)
domenico
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