Annotation with arrows in Matplotlib - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the matplotlib pyplot module as plt.

Matplotlib

import matplotlib.[1] as plt

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Agraph

Bplot

Ccharts

Dpyplot

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'plot' instead of 'pyplot' causes import errors.

Using 'charts' or 'graph' are not valid matplotlib modules.

We import the plotting module from matplotlib as pyplot and alias it as plt.

2fill in blank

medium

Complete the code to create a simple plot of y versus x.

Matplotlib

plt.plot(x, [1])
plt.show()

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Ay

Bz

Cx

Ddata

Attempts:

3 left

💡 Hint

Common Mistakes

Passing x twice instead of y.

Passing an undefined variable like z or data.

The plot function plots y-values against x-values. So, y is the second argument.

3fill in blank

hard

Fix the error in the annotation code by completing the missing parameter name.

Matplotlib

plt.annotate('Point', xy=(2, 3), xytext=(3, 4), arrowprops=[1])
plt.show()

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A{'arrowstyle': '->'}

B{'arrow': '->'}

C{'style': '->'}

D{'arrow_type': '->'}

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'style' or 'arrow' instead of 'arrowstyle' causes the arrow not to appear.

Misspelling the key name.

The correct parameter for arrow style in arrowprops is arrowstyle.

4fill in blank

hard

Fill both blanks to create an annotation with an arrow pointing from text to a point.

Matplotlib

plt.annotate('Label', xy=[1], xytext=[2], arrowprops={'arrowstyle': '->'})
plt.show()

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A(4, 5)

B(2, 3)

C(1, 1)

D(3, 4)

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping the xy and xytext coordinates.

Using coordinates outside the plot range.

The arrow points from the text location xytext=(3,4) to the point xy=(2,3).

5fill in blank

hard

Complete the code to create a dictionary comprehension that maps points to their labels only if x > 2.

Matplotlib

labels = {point: label for point, label in points.items() if point[0] [1] 2}

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C>

D<

Attempts:

3 left

💡 Hint

Common Mistakes

Adding extra characters between key and colon.

Using wrong comparison operators.

The dictionary comprehension uses the point as key and label as value with no extra syntax between them, filtering points where x > 2.