Interactive plotting broken

[williamjameshandley]

In the current version of matplotlib (3.5.2) /ipython (8.4.0) the interactive plotting behaviour has changed. This means that once created, plots do not update (as they are seen to do in the gif)

One fix for this is to run explicitly

import matplotlib.pyplot as plt
plt.ion()

but ideally this would be done with an appropriate set of commands supplied to the ipython --matplotlib interpreter so that it works out of the box.