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

From: Martin Lam <tmlammail_at_yahoo.com>
Date: Thu 02 Feb 2006 - 19:47:58 EST


Hi,

Perhaps you should try the transpose function t(). It converts a row into a column and vice versa.

HTH, Martin Lam

> 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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R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Thu Feb 02 20:02:28 2006

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