Generate a heatmap in MatPlotLib using a scatter data set

Question

I have a set of X,Y data points (about 10k) that are easy to plot as a scatter plot but that I would like to represent as a heatmap.

I looked through the examples in

Answer 1

Seaborn now has the jointplot function which should work nicely here:

import numpy as np
import seaborn as sns
import matplotlib.pyplot as plt

# Generate some test data
x = np.random.randn(8873)
y = np.random.randn(8873)

sns.jointplot(x=x, y=y, kind='hex')
plt.show()