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How do you initialize an N*M matrix with certain N*1 vector?

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Emre Doruk
Emre Doruk 2023-1-17
评论： Dyuman Joshi 2023-1-17
I had a martix N*M matrix, I try to init matrix with an vector. I am doing with code which below.
signal=zeros(5,4);
vectorA=[1 2 3 4];
for k=1:5
signal(k,:)=vectorA;
end
Is there better way to a work this code ?

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Dyuman Joshi
Dyuman Joshi 2023-1-17
Ran in:
You can use repmat()
signal=zeros(5,4);
vectorA=[1 2 3 4];
for k=1:5
signal(k,:)=vectorA;
end
signal
signal = 5×4
1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4
y=repmat(vectorA,5,1)
y = 5×4
1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4

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