This option limits both the auto-generated axis tic labels and the
corresponding plot border to the range of values actually present in the data
that has been plotted. Note that this is independent of the current range
limits for the plot. For example, suppose that the data in "file.dat" all lies
in the range 2 4#4 y 4#4 4. Then the following commands will create a plot for
which the left-hand plot border (y axis) is drawn for only this portion of the
total y range, and only the axis tics in this region are generated.
I.e., the plot will be scaled to the full range on y, but there will be a gap
between 0 and 2 on the left border and another gap between 4 and 10. This
style is sometimes referred to as a range-frame graph.
set border 3
set yrange [0:10]
set ytics nomirror rangelimited
plot "file.dat"