Double Y Axes
To make a plot having two curves with different Y axis scaling,
but with the same X axis scaling, one must disable the automatic
axis creation with the noyaxes
command and manually command the separate axes.
This is shown in the following script;
data test.dat
xcolumn 1
ycolumn 2
ymin -2
ymax 3
xlabel Angle
ylabel |_|_ COS( Angle )
noyaxes
plot
showyaxis
ymin -1
ymax 1
ycolumn 3
dash 0.1
ylabel |_|_ SIN( Angle )
plot
showsecondyaxis
title Double Y
This creates a graph like this: