[Solved] Identify the error in this blitting code snippet: import matplotlib.pyplot as plt fig, ax = plt.subplots() background = fig.canvas.copy_from_bbox(ax.bbox) line, = ax.plot([0, 1], [0, 1]) line.... | Matplotlib

Matplotlib - Animations

Identify the error in this blitting code snippet:

import matplotlib.pyplot as plt
fig, ax = plt.subplots()
background = fig.canvas.copy_from_bbox(ax.bbox)
line, = ax.plot([0, 1], [0, 1])
line.set_ydata([1, 0])
ax.draw_artist(line)
fig.canvas.blit(ax.bbox)

Ablit() is called on the wrong object

BLine data is not updated correctly

Cax.plot() syntax is incorrect

DBackground is not restored before drawing the artist

Step-by-Step Solution

Solution:

Step 1: Check blitting steps
Before drawing the updated artist, the saved background must be restored to erase old visuals.
Step 2: Identify missing restore_region call
The code misses fig.canvas.restore_region(background), causing visual artifacts.
Final Answer:
Background is not restored before drawing the artist -> Option D
Quick Check:
Restore background before draw_artist [OK]

Quick Trick: Always restore background before drawing updated artists [OK]

Common Mistakes:

Skipping restore_region call
Misusing blit on wrong object
Incorrect line data update

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More Matplotlib Quizzes

Identify the error in this blitting code snippet:

Step 1: Check blitting steps

Step 2: Identify missing restore_region call

Final Answer:

Quick Check:

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