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Save the output of a for loop

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marwa mohamed
marwa mohamed 2020-9-10
评论： Ameer Hamza 2020-9-14
Hey!
i am trying to generate 3 sine waves with different frequenceies using a for loop. I would like to save the output of this for loop in a matrix 500x3, but it is always overwrite the previous value. can anyone help?

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Ameer Hamza
Ameer Hamza 2020-9-10
See this example
f = [1 2 3]; % frequencies
t = linspace(0, 10, 500); % time values
S = zeros(numel(t), 3); % array for storing signal values
for i = 1:numel(t)
s1 = sin(f(1)*t(i));
s2 = sin(f(2)*t(i));
s3 = sin(f(3)*t(i));
S(i, :) = [s1 s2 s3];
end
plot(S)

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