8.8.2 Selecting which axes to plot against

The axes against which data are plotted can be selected by passing the axes modifier to the plot command. By default, data is plotted against the first horizontal axis and the first vertical axis. In the following plot command the second horizontal axis and the third vertical axis would be used:

plot f(x) axes x2y3

It is also possible to plot data using a vertical axis as the abscissa axis using syntax such as:

plot f(x) axes y3x2

Similar syntax is used when plotting three-dimensional graphs, except that three perpendicular axes should be specified.