half wave rectifier in matlab

A = 5; % amplitude of input signal
f = 50; % frequency of input signal
T = 1/f; % time period of input signal
t = 0:T/100:2*T; % time vector for simulation
x = A*sin(2*pi*f*t); % input signal
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Von = 0.6; % diode turn-on voltage
Rf = 1e6; % diode forward resistance
y = zeros(size(x)); % initialize output signal
for i = 1:length(x)
    if x(i) > Von
        y(i) = x(i) - Von;
    end
end
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figure;
subplot(2,1,1);
plot(t,x);
xlabel('Time (s)');
ylabel('Input Amplitude (V)');
title('Input Signal');
grid on;
subplot(2,1,2);
plot(t,y);
xlabel('Time (s)');
ylabel('Output Amplitude (V)');
title('Output Signal (Half-wave Rectified)');
grid on;
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