[FIXED] Histogram outlined by added edgecolor

Issue

I have plotted a histogram and was expecting to see the outlines of my bars but this is not the case.

I'm using the following code:

import matplotlib.pyplot as plt
from numpy.random import normal
gaussian_numbers = normal(size=1000)
plt.hist(gaussian_numbers)
plt.title("Gaussian Histogram")
plt.xlabel("Value")
plt.ylabel("Frequency")
plt.show()

How do I show the outline of the bars?

Solution

It looks like either your linewidth was set to zero or your edgecolor was set to 'none'. Matplotlib changed the defaults for these in 2.0. Try using:

plt.hist(gaussian_numbers, edgecolor='black', linewidth=1.2)

Answered By - James