> Hey guys, sorry if this question is somewhat dumb but i'm new to gnuplot and
> i couldn't find a solution. Is there a command to add that diagonal pair of
> tics for skipping some interval in the axis?
No, but since gnuplot doesn't support skipping a part of the axis range
in the first place, that's not exactly a major pain ;-P
If you want a broken axis, you have to do it all manually: place the
break marks as 'set arrow ... nohead', partially in 'graph' coordinates,
transform the input data, place the ticks, everything.