> The interactive backends (wx, tk, gtk) all handle draw_idle > in a way which delays the drawing until there are no > more commands to run. > > By changing draw_if_interactive to use draw_idle instead of > draw, > wouldn't this automatically smooth over the performance > issues without > the user having to toggle interactive in their scripts? I just tried this approach with the tkagg and gtk backends, and indeed, this does solve the performance issue in interactive mode. --Michiel.