latex: printing a variable in roman numerals

Question

I'm typesetting in LaTeX, and I'd like to display a "variable" (in my case, a reference \ref{blah} to an item number in list) in roman rather than the default arabic. Is there an easy way to do this? Thanks for any pointers!

Answer 1

You can try \def\theenumi{\roman{enumi}} inside an enumerate environment -- this changes both labels and refs, but you'll have to then explicitly undo it (if you want to).

Answer 2

lowercase

\romannumeral 0\ref{blah}\relax

uppercase

\uppercase\expandafter{\romannumeral 0\ref{blah}}