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Why is my plot blank? (New to MATLAB)

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Daniel Spejcher
Daniel Spejcher on 22 Nov 2019
Answered: Erivelton Gualter on 22 Nov 2019
for x = linspace(-pi,pi,.01)
S(x) = (2.*H(x))-1;
end
figure
plot(S(x),x,'-r*');
axis([-pi pi -3 3]);
title('S(x) vs. x');
xlabel('x');
ylabel('S(x)');
My assignment is dealing with the Fourier Series and the Heaviside Function and I am trying to plot S(x) vs. x but my plot is blank.

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Answers (1)

Erivelton Gualter
Erivelton Gualter on 22 Nov 2019
Try the following:
x = -pi:.1:pi;
for i=1:length(x)
S(i) = (2.*heaviside(x(i)))-1;
end
figure
plot(S,x,'-r*');
axis([-pi pi -3 3]);
title('S(x) vs. x');
xlabel('x');
ylabel('S(x)');

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