'Toggles the data display.'

def toggle_display_plot(self):

    if self.bpm_plot:
        print 'bpm    plot    disabled'
        self.bpm_plot = False
        destroyWindow(self.plot_title)
    else:
        print 'bpm    plot    enabled'
        if self.processor.find_faces:
            self.toggle_search()
        self.bpm_plot = True
        self.make_bpm_plot()
        moveWindow(self.plot_title, self.w, 0)
