See https://github.com/JuliaLang/julia/issues/16259#issuecomment-217703153
On Sun, May 29 2016, James Gilbert wrote: > In Noteworthy Differences to R it says: > > * Julia performs matrix transposition using the ' operator and conjugated > transposition using > the ' operator. Julia’s A.' is therefore equivalent to R’s t(A). > > The matrix transposition should be: .'