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Can fploy and ezplot a discrete time signal?

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Jinquan Li
Jinquan Li 2021-2-15
回答： Walter Roberson 2021-2-15
I'm trying to plot a discrete time signal : y[n] = 5𝛿(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)]');

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回答（1 个）

Walter Roberson
Walter Roberson 2021-2-15
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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