This is revisiting #4487 in which @jakevdp suggested changing the default of bins to 'auto'. Since automatic determination is now supported in matplotlib via numpy, I think it would be great to make ...

Using the pmdarima.arima.ARIMA.plot_diagnostics always seems to return the following error: "AttributeError: 'Rectangle' object has no property 'normed'" pip: 20.0.2 ...

Abstract: Matplotlib is a 2D graphics package used for Python for application development, interactive scripting,and publication-quality image generation across user interfaces and operating systems ...