Il giorno mar, 18/04/2006 alle 11.00 -0500, Marc Schwartz (via MN): > > mylevels<- ...a string with all the levels(af) > > mylevels <- levels(af) > > > mylevels > [1] "a" "b" I don't need to store these two levels, but a string with the values "ab". Thanks Cheers -- DM