[Solved] What will be the output of this code?import matplotlib.pyplot as plt import numpy as np img = np.array([[5, 10], [15, 20]]) plt.imshow(img, cmap='hot') plt.colorbar() plt.show() | Matplotlib

Matplotlib - Image Display

What will be the output of this code?

import matplotlib.pyplot as plt
import numpy as np
img = np.array([[5, 10], [15, 20]])
plt.imshow(img, cmap='hot')
plt.colorbar()
plt.show()

AA 2x2 heatmap image with colors representing values from 5 to 20 and a colorbar

BA grayscale image with pixel values 5, 10, 15, 20

CAn error because 'hot' is not a valid colormap

DA blank plot with no image displayed

Step-by-Step Solution

Solution:

Step 1: Understand the array and colormap
The array contains values from 5 to 20. The 'hot' colormap maps these values to colors from black to red to yellow.
Step 2: Effect of plt.colorbar()
This adds a color scale legend showing the mapping of values to colors.
Final Answer:
A 2x2 heatmap image with colors representing values from 5 to 20 and a colorbar -> Option A
Quick Check:
Check colormap validity and colorbar presence [OK]

Quick Trick: Colormaps map values to colors; colorbar shows scale [OK]

Common Mistakes:

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What will be the output of this code?