How to correctly generate a 3d histogram using numpy or matplotlib built in functions in python?

Question

This is more of a general question about 3d histogram creation in python.

I have attempted to create a 3d histogram using the X and Y arrays in the following code

Answer 1

In this answer there is a solution for 2D and 3D Histograms of scattered points. The usage is simple:

points, sub = hist2d_scatter( radius, density, bins=4 )

points, sub = hist3d_scatter( temperature, density, radius, bins=4 )

Where sub is a matplotlib "Subplot" instance (3D or not) and pointscontains the points used for the scatter plot.