Can fploy and ezplot a discrete time signal?

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I'm trying to plot a discrete time signal : y[n] = 5饾浛(n)+3u(n-3) , for n=[-1:0.01:10] by using fplot or ezplot.
Here's what I've tried but the result seems not correct.
n = [-1:0.01:10];
y = 5*dirac(n) + 3*heaviside(n-3);
fplot(y)
grid on
xlabel('t (time)');
ylabel('[y5(t)]');

Answers (1)

Walter Roberson
Walter Roberson on 15 Feb 2021
No. fplot and ezplot are for function handles or symbolic expressions or symbolic functions. They treat numbers as if they were a formula that returned that number.
Use a different plotting function such as stairs or stem

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