[Gretl-users] Re: vec() and vech(): row-major vs. column-major

On Thu, 17 Dec 2020, Sven Schreiber wrote: > > This message just serves to share this "discovery". I'm not saying we > should change vech's behavior because that would break too much stuff. > But maybe a more explicit note should be added to the documentation. What should the message say? Seems like it would have to be something like: If your input matrix is not symmetric, make sure the upper triangle is what it would be if the matrix were symmetric. But that sounds kinda redundant to me.