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

From: Michael <comtech.usa_at_gmail.com>
Date: Thu 02 Feb 2006 - 18:57:31 EST


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

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