%matplotlib inline

import matplotlib.pyplot as plt
import numpy as np

data = np.loadtxt('facebook_combined_histogram.csv', delimiter=',', dtype=int)

x = [ i[0] for i in data ]
y = [ i[1] for i in data ]

size = 50

hist, bins = np.histogram(y, bins=size)

width = 0.7 * (bins[1] - bins[0])
center = (bins[:-1] + bins[1:]) / 2
plt.bar(center, hist, align='center', width=width)

plt.show()

plt.plot(np.arange(size), hist, 'ro')
plt.show()