Updates the displayed Roll, Pitch, Yaw Text

def updateRPYText(self):
        'Updates the displayed Roll, Pitch, Yaw Text'
        self.rollText.set_text('Roll:   %.2f' % self.roll)
        self.pitchText.set_text('Pitch: %.2f' % self.pitch)
        self.yawText.set_text('Yaw:   %.2f' % self.yaw)