Page 26 - Basics of MATLAB and Beyond

4.2 Adding Plots
When you issue a plot command matlab clears the axes and produces
a new plot. To add to an existing plot, type hold on. For example try
this:

plot(x,y)
hold on
plot(5*x,5*y)

matlab re-scales the axes to fit the new data. The old plot appears
smaller. Once you have typed hold on, all subsequent plots will be
added to the current axes:

plot(x,x)

Companion M-Files Feature 1 If you decide you want to re-
move the last thing you plotted on a plot with hold on in force,
you can type:

undo

to get back to where you were before.

To switch off the hold behaviour, type hold off. Typing hold by itself
toggles the hold state of the current plot.

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