How to plot this signal on matlab? Bounty

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Nitigya Joshi
Nitigya Joshi on 14 Jul 2021
Answered: Yazan on 14 Jul 2021

Accepted Answer

Simon Chan
Simon Chan on 14 Jul 2021
Not sure what is the exact function of the curve and simply assume it to be a cosine function.
x=linspace(-1,1);
y=cos(pi*x/2);
w=1-abs(x);
u=linspace(-6,6,600);
v=[w(51:100),y,w,y,w,y,w(1:50)];
plot(u,v,'Linewidth',2)
xlabel('Time')
ylabel('x(t)')

More Answers (1)

Yazan
Yazan on 14 Jul 2021
T = 4; % period
F = 1/4; % fundamental frequency
Fs = 1000; % sampling frequency
t = -6:1/Fs:6-1/Fs; % time vector
x1 = cos(2*pi*F*t); % first signal is cos signal
x1(x1<0) = 0; % set negative part to zero
x2 = sawtooth(2*pi*F*t, 1/2); % second signal is triangular
x2(x2<0) = 0; % set negative part to zero
x3 = x1+x2; % sum of the two signals
f = figure('Units', 'normalized', 'Position', [0.08 0.4 0.77 0.48]);
subplot(1,3,1), plot(t, x1); grid minor
xlabel('Time'); ylabel('Cos signal');
subplot(1,3,2), plot(t, x2); grid minor
xlabel('Time'); ylabel('Triangular signal');
subplot(1,3,3), plot(t, x3); grid minor
xlabel('Time'); ylabel('Composite signal');

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