Axis limits (xlim, ylim) in Matplotlib - Cheat Sheet & Quick Revision

Recall & Review

beginner

What do xlim and ylim control in a matplotlib plot?

xlim controls the limits of the x-axis, and ylim controls the limits of the y-axis in a plot. They set the visible range of data on each axis.

beginner

How do you set the x-axis limits to 0 and 10 in matplotlib?

You use plt.xlim(0, 10) to set the x-axis limits from 0 to 10.

intermediate

What happens if you set ylim with the lower limit greater than the upper limit, like plt.ylim(10, 0)?

The y-axis will be inverted, so the values will decrease from top to bottom instead of increasing.

beginner

True or False: You can use ax.set_xlim() and ax.set_ylim() on an Axes object to set axis limits.

True. When working with an Axes object, you use ax.set_xlim() and ax.set_ylim() to set the axis limits.

beginner

Why might you want to set axis limits manually in a plot?

Setting axis limits manually helps focus on a specific data range, improves readability, or ensures consistent scales across multiple plots.

Which function sets the limits of the y-axis in matplotlib?

A plt.axis()

B plt.xlim()

C plt.ylim()

D plt.set_limits()

plt.ylim() sets the y-axis limits. plt.xlim() sets the x-axis limits.

What will plt.xlim(5, 0) do to the x-axis?

A Invert the x-axis from 5 to 0

B Ignore the command

C Cause an error

D Set x-axis limits from 0 to 5

Setting limits with the lower limit greater than the upper limit inverts the axis.

How do you reset axis limits to automatic scaling in matplotlib?

A plt.xlim() without arguments

B plt.xlim(auto=True)

C plt.xlim(None)

D plt.autoscale()

plt.autoscale() resets the axis limits to automatic scaling based on the data.

Which method is used to set axis limits on a specific Axes object named ax?

A ax.set_limits()

B ax.set_xlim() and ax.set_ylim()

C ax.axis_limits()

D ax.limits()

Use ax.set_xlim() and ax.set_ylim() to set limits on an Axes object.

Why is it useful to set axis limits manually?

A To zoom in on important data

B To make plots colorful

C To add grid lines

D To change plot title

Manual axis limits help focus on specific data ranges for better clarity.

Explain how to set and invert the x-axis limits in a matplotlib plot.

Think about how the order of limits affects axis direction.

Describe the difference between using plt.xlim() and ax.set_xlim() in matplotlib.

Consider the difference between pyplot and object-oriented approaches.