Multiple plots (hold on) in MATLAB - Cheat Sheet & Quick Revision

Recall & Review

beginner

What does the hold on command do in MATLAB plotting?

It keeps the current plot active so that new plots are added to the same figure instead of replacing it.

beginner

How do you plot two different lines on the same figure in MATLAB?

Use plot for the first line, then hold on, then plot again for the second line.

beginner

What command stops adding plots to the current figure and allows new plots to replace it?

The command hold off stops adding to the current plot and resets to default behavior.

beginner

True or False: Without hold on, calling plot multiple times will overwrite the previous plot.

True. Each plot call replaces the existing plot unless hold on is used.

intermediate

What is the effect of hold on on axis limits and labels?

It preserves the current axis limits and labels so they are not reset when new plots are added.

What happens if you plot twice in MATLAB without using hold on?

A The figure window closes.

B Both plots appear on the same figure automatically.

C MATLAB shows an error.

D The second plot replaces the first plot.

Without hold on, each new plot command clears the previous plot.

Which command allows you to add multiple plots to the same figure in MATLAB?

A hold off

B hold on

C plot add

D figure hold

hold on keeps the current plot so new plots add to it.

After using hold on, how do you return to the default plotting behavior?

A hold off

B hold reset

C plot reset

D clear hold

hold off stops adding plots to the current figure.

If you want to plot a sine and cosine wave on the same graph, what is the correct sequence?

A plot sine; hold on; plot cosine

B hold on; plot sine; plot cosine

C plot sine; plot cosine

D plot sine; hold off; plot cosine

You plot the first line, then use hold on before plotting the second.

What does hold on preserve when adding new plots?

A Only labels

B Only axis limits

C Axis limits and labels

D Nothing is preserved

hold on keeps axis limits and labels unchanged when adding plots.

Explain how to plot multiple lines on the same figure in MATLAB using hold on.

Think about how to keep the figure active for new plots.

Describe what happens to the axis limits and labels when you use hold on in MATLAB.

Consider what would happen if the limits changed every time you add a plot.