matplotlib qt imshow animate [duplicate]

Answer 1

You either need to add a pause in the loop after the draw or use the matplotlib.animation module (doc) (tutorial).

possibly related matplotlib.pyplot/pylab not updating figure while isinteractive(), using ipython -pylab:

Answer 2

I'll take a look at that but it looks like for using the qt backend the call to:

QApplication.ProcessEvents()

updates the imshow plot.