[R] How to force a vector to be column or row vector?

Gabor Grothendieck ggrothendieck at gmail.com
Thu Feb 2 09:00:54 CET 2006


Try this:


rbind(c(x))
cbind(c(x))
t(c(x))

On 2/2/06, Michael <comtech.usa at gmail.com> wrote:
> Hi all,
>
> I tended to use rbind, or cbind to force a vector be be deemed as a column
> or row vector. This is very important if I want to do things like u' * A *
> u, where u' is a row vector and u is a column vector, regardless of what
> originall format  the "u" is... I want to recast it to column vector or row
> vector...  How can I do that?
>
> ----------------------------------------------------
>
>
> b_hat=solve(t(X) %*% X) %*% t(X) %*% Y;
>
> attr(b_hat, "dim")
> [1] 4 1
>
> rbind(b_hat)
>       [,1]
>  -4.814763
> V -5.804245
>  -5.122668
>  -4.308326
>
>        [[alternative HTML version deleted]]
>
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