subplot(411), plot(time,undak), grid on, xlabel('time [sec]'), ylabel('isyarat undak')
subplot(412), plot(time,undak1), grid on, xlabel('time [sec]'), ylabel('transport')
subplot(413), plot(time,undak2), grid on, xlabel('time [sec]'), ylabel('lagging1')
subplot(414), plot(time,undak3), grid on, xlabel('time [sec]'), ylabel('lagging2')