how to remove “empty” space between subplots?

Question

I\'m making a figure with a total of 68 subplots and want to remove the empty space between them all. Here\'s what I have:

Answer 1

Have you tried the tight layout functionality?

plt.tight_layout()

See also HERE

EDIT: Alternatively, you can use gridspec:

import numpy as np
import matplotlib.pyplot as plt
import matplotlib as mpl
images = [np.random.rand(40, 40) for x in range(68)]
gs = mpl.gridspec.GridSpec(17, 4)
gs.update(wspace=0.1, hspace=0.1, left=0.1, right=0.4, bottom=0.1, top=0.9) 
for i in range(68):
    plt.subplot(gs[i])
    plt.imshow(images[i])
    plt.axis('off')
plt.show()