matplotlib histogram bin width code example

Example 1: python - change the bin size of an histogram+

x = np.random.randn(1000)      # Generate random numbers
plt.hist(x, bins=20)           # Select bin size
plt.hist(x, bins=range(-4, 5)) # Select range

Example 2: plt.hist using bins

counts, bins = np.histogram(data)
plt.hist(bins[:-1], bins, weights=counts)