PLT Mostrar 2 imágenes
#subplot(r,c) provide the no. of rows and columns
f, axarr = plt.subplots(2,1)
# use the created array to output your multiple images. In this case I have stacked 2 images vertically
axarr[0].imshow(img1)
axarr[1].imshow(np.log(img2))
plt.show()
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