Multiple images in subplot grid in Matplotlib - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the purpose of using subplots in matplotlib?

Subplots allow you to display multiple plots or images in a single figure arranged in a grid layout. This helps compare or visualize several datasets side by side.

beginner

How do you create a 2x2 grid of subplots in matplotlib?

Use plt.subplots(2, 2) to create a figure with 4 subplots arranged in 2 rows and 2 columns.

beginner

Which matplotlib function is used to display an image in a subplot?

The function imshow() is used to display an image inside a subplot.

intermediate

How can you remove axis ticks and labels from a subplot image?

Call ax.axis('off') on the subplot axis object to hide axis ticks and labels for a cleaner image display.

intermediate

Why is it useful to use tight_layout() when showing multiple images in subplots?

tight_layout() automatically adjusts spacing between subplots to prevent overlapping titles, labels, or images, making the figure look neat.

Which function creates a grid of subplots in matplotlib?

A plt.subplots()

B plt.plot()

C plt.imshow()

D plt.grid()

plt.subplots() creates a figure and a grid of subplots.

How do you display an image in a subplot axis named ax?

A ax.imshow(image)

B plt.imshow(image)

C ax.plot(image)

D ax.show(image)

ax.imshow(image) displays the image inside the specific subplot axis.

What does ax.axis('off') do in a subplot?

A Zooms into the image

B Shows axis ticks and labels

C Changes axis color

D Removes axis ticks and labels

ax.axis('off') hides the axis ticks and labels for a cleaner image display.

What is the effect of plt.tight_layout()?

A Adds grid lines

B Adjusts spacing between subplots

C Changes figure size

D Saves the figure

plt.tight_layout() adjusts spacing to prevent overlap between subplots.

If you want a 3x1 grid of images, which command is correct?

A plt.subplots(3)

B plt.subplots(1, 3)

C plt.subplots(3, 1)

D plt.subplots(1)

plt.subplots(3, 1) creates 3 rows and 1 column of subplots.

Explain how to display multiple images in a grid using matplotlib subplots.

Think about creating the grid, showing images, cleaning axes, and adjusting layout.

Describe why and how you would remove axis ticks and labels when showing images in subplots.

Focus on visual clarity and how to achieve it.