Re: Wald test on mathematica

*To*: mathgroup at smc.vnet.net*Subject*: [mg82548] Re: Wald test on mathematica*From*: Ray Koopman <koopman at sfu.ca>*Date*: Wed, 24 Oct 2007 04:29:52 -0400 (EDT)*References*: <ffhr2h$4pb$1@smc.vnet.net>

On Oct 22, 2:38 am, "Mauricio Esteban Cuak" <cuak2... at gmail.com> wrote: > [...] > The thing that bothers me is (and it's the same with ols) that I can't use > this same function if x is a vector instead of a matrix or if r is a vector, > because mathematica will not allow me to transpose a one-dimensional list. > What should I do? Should I make a "If, then" thingy or is there some simpler > way I'm not aware of for dealing with this kind of situatitions? > > Thanks! To convert a vector to a matrix, wrap it in { }, transposing as necessary: In[1]:= x = {1,2,3} Dimensions@{x} Dimensions@Transpose@{x} Out[1]= {1,2,3} Out[2]= {1,3} Out[3]= {3,1}