Issue plotting stem function

5 次查看（过去 30 天）
Ismael Gilles Durand
回答： KSSV 2022-6-7
I am trying to plot a discrete function Xn using the stem function and also plot a continuous function Xt on the same figure over the same interval.
X=@(t) 3*sin(100*pi*t);
t=linspace(0,0.05);
Xn=3*sin(pi*n/3);
n=linspace(0,0.035); %%This line is trying to match the number of elements in N
N=[0 2.6 2.6 0 -2.6 -2.6 0];
figure(1);
plot(t,X(t));
grid on;
hold on;
stem(N,Xn);
axis([0 0.05 -3 3])

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采纳的回答

KSSV
KSSV 2022-6-7
X=@(t) 3*sin(100*pi*t);
t=linspace(0,0.05);
%
n=linspace(0,0.035); %%This line is trying to match the number of elements in N
N=[0 2.6 2.6 0 -2.6 -2.6 0];
Xn=3*sin(pi*N/3);
figure(1);
plot(t,X(t));
grid on;
hold on;
stem(N,Xn,'*-r');
axis([0 0.05 -3 3])

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