Why image handling matters in Matplotlib - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the library used for image plotting.

Matplotlib

import [1] as plt

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Amatplotlib.pyplot

Bpandas

Cseaborn

Dnumpy

Attempts:

3 left

💡 Hint

Common Mistakes

Importing numpy or pandas instead of matplotlib.pyplot.

Using seaborn which is for statistical plots, not basic image plotting.

We use matplotlib.pyplot to plot images and graphs in Python.

2fill in blank

medium

Complete the code to load an image file named 'photo.png' using matplotlib.

Matplotlib

image = plt.[1]('photo.png')

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Aimread

Bshow

Cplot

Dimshow

Attempts:

3 left

💡 Hint

Common Mistakes

Using imshow which displays but does not load the image.

Using plot which is for line plots, not images.

The imread function reads an image file into an array for processing.

3fill in blank

hard

Fix the error in the code to display the loaded image correctly.

Matplotlib

plt.[1](image)
plt.show()

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Aplot

Bread

Cimshow

Dload

Attempts:

3 left

💡 Hint

Common Mistakes

Using plot which is for line graphs, not images.

Using read or load which are not matplotlib functions.

The imshow function displays image data on the plot.

4fill in blank

hard

Fill both blanks to create a dictionary with image filenames as keys and their sizes as values.

Matplotlib

sizes = {file: image.[1] for file in files if image.[2] > 1000}

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Ashape

Bsize

Cndim

Ddtype

Attempts:

3 left

💡 Hint

Common Mistakes

Using ndim which only gives the number of dimensions, not size.

Using dtype which gives data type, not size.

shape gives the dimensions of the image array, and size gives the total number of pixels.

5fill in blank

hard

Fill all three blanks to filter images by width and create a dictionary of their heights.

Matplotlib

heights = {file: image.shape[[1]] for file, image in images.items() if image.shape[[2]] [3] 500}

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A0

B1

C>

D<

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up height and width indices.

Using less than instead of greater than for filtering.

Index 1 of shape is width, index 0 is height. We filter images with width greater than 500 pixels.