How do I use mathlibplot.hist with x and y values using bins=40 in Python 3?

Question

I have a large list of data points of x and y values that I need to put into a histogram with 40 bins but mathlibplot.hist is only letting me enter 1 variable with bins. I've tried hist2d as well but it's not very clean. Any help would be appreciated!

Answer 1

As you have data points x and y, you can simply use hist method to plot histogram. The following code will help you to create a histogram.

plt.hist([x,y],bins=40, histtype='step',fill=True)
plt.show()

The histogram will look like the following:

If you want to change the style or give it title and labels, you can do it. Here is another histogram with unfilled bars.

If you still face any problem, let me know then.

Answer 2

Maybe you can make use of matplotlib library to solve your purpose: It will be like imposing 2 histograms on top of each other. In the below code, I am trying to plot a histograms of y_train and predicted(X_train) in the same space. You can modify the variables as per your requirement.

import matplotlib.pyplot as plt

plt.hist(y_train, stacked=True,bins=40, label='Actual', alpha=0.5)
plt.hist(regressor.predict(X_train),bins=40, stacked=True, label='Predicted', alpha=0.5)
plt.legend(loc='best')
plt.show()

Hope this helps!