> > For now you'd have to go with a filter or maybe use other means to produce > a table. In the past, when I have needed more complex tables I've usually > used a mix of Hmisc in R, babel and some Emacs-lisp to clean it up... Not > so nice.
At this stage, I think I will just manually fix the final latex export. I do not know enough Emacs-lisp to be able to do this. I have an org file (with a lot of embedded R and by now a lot of embedded LaTeX) producing a final pdf for a book, which goes to press in three days. I would be sorry if there is this little thing that I am unable to do in org :(. Sometime back, Eric Schulte had very kindly shared code that creates multicolumn cells in latex export. I have used it extensively. I think that should be integrated into org. In the meanwhile, I hope somebody can come up with a way to insert \cmidrule in tables before my next project :). Thank you, and thank you all. Vikas