Hi, Perhaps you should try the transpose function t(). It converts a row into a column and vice versa.
HTH, Martin Lam --- Michael <[EMAIL PROTECTED]> 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]] > > ______________________________________________ > 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 > ______________________________________________ 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