produces a plot that still has ticmarks on the top x axis.
I've tried setting x2tics scale to a very small value but it appears to have a minimum of .5. Any other ideas?
I'm using Version 4.2 patchlevel 5, 32-bit windows, terminal types windows and emf.
The problem is that those aren't x2tics to begin with. They're the mirrored xtics. You're looking for
set xtics nomirror
See "help xtics" for the full story.