Kan-Ju Lin

In gnuplot, a handy way to turn off the axis is to use:

unset ytics

This will remove all the tics and associated labels on the y axis. Sometimes we like to have the tics there, but hide just the numbers (i.e. when using arbitrary unit). A more complicated way is to use the set ytics ("〈label〉" 〈position〉,) command. This is used for assigning specific labels at given positions.

set ytics ("" -40, "" -30, "" -20, "" -10, "" 0, "ten" 10, "twenty" 20, "thrity" 30, "" 40, "" 50, "" 60)

So utilizing this command, we could hide all the labels by removing the text inside the double quotes. Or, a much simpler way is to use set format:

set format y ""

Leave the double quotes empty will remove all the labels but keep the tics there.