How to create multiple matrix using for loop?

Question

Kirti 2012-11-26

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https://ww2.mathworks.cn/matlabcentral/answers/54803-how-to-create-multiple-matrix-using-for-loop

Hi all, I am having y=[1 2 3 4 5 6 7 8 9 10] as data. i want to write array x1 =[ 1 2 3 4 5] x2 =[2 3 4 5 6] x3= [3 4 5 6 7] like this upto x6 =[6 7 8 9 10]. please help me to create this using matlab. I tried as follows :n=10;k=6;m=5; for i=1:k for j=i:i+m-2 x[i]= a(j); end end but it is not working!!

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Answer 1

Ilham Hardy 2012-11-26

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https://ww2.mathworks.cn/matlabcentral/answers/54803-how-to-create-multiple-matrix-using-for-loop#answer_66506

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ya = [1,2,3,4,5,6,7,8,9,10];
for iy = 1:(length(ya)/2)+1
    xa(iy,:) = ya(iy:4+iy);
end

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Answer 2

Amin Bashi 2012-11-26

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 y=[1 2 3 4 5 6 7 8 9 10]
x = y([1:5;2:6;3:7;4:8;5:9;6:10])

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Answer 3

Muruganandham Subramanian 2012-11-26

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在 MATLAB Online 中打开

Hi..

try this code

a=[1:10];

for i=1:numel(a)

    if i==a(1)
        disp(a)
    elseif i<=6
        a(1)=[];
        disp(a) 
    else
        break;
    end

end

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Answer 4

Kirti 2012-11-26

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https://ww2.mathworks.cn/matlabcentral/answers/54803-how-to-create-multiple-matrix-using-for-loop#answer_66512

Thanks liham Hardy

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Kirti 2012-11-27

when i use same logic for long data i got subscripted assignment diamentiopn mismatch error.eg. i wrote the code as t=-pi :0.01244:pi y=sin(t) n=length(y); m=n/2;k=n+1-m; for iy=1:k; xa(iy,:)=y(iy+m-1); end disp(xa). I want a sine wave of 504 samples ,add it with White guassian noise.then write sampled sine wave in terms of lagged vectors and then finally the trajectory matrix.

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