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matplotlib.github.com/1.3.1/users/image_tutorial-3.py at main · matplotlib/matplotlib.github.com · GitHub

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import matplotlib.pyplot as plt
import matplotlib.image as mpimg
import numpy as np
img = mpimg.imread('../_static/stinkbug.png')
lum_img = img[:,:,0]
imgplot = plt.imshow(lum_img)
imgplot.set_cmap('hot')

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