so i have an array that is (4051x1), called xvoltage, and I need to form a matrix with this vector only, I want to do something like a sliding window, that the first row are samples 2650:2655, and then the second row world be from 2651:2656 , and so on successively, can someone help me out i'm stuck , it just keeps repeating the same values forming a five by five matrix.
for p=1:5
for q=1:5
xV(p,q)=xvoltage(2650+q);
end
end

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Stephen23
Stephen23 2018년 8월 10일
편집: Stephen23 2018년 8월 10일

1 개 추천

You could use hankel. Where A is your 4051x1 array:
hankel(A(2650:end-4),A(end-4:end))

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thanks! I just modified it a little bit, to get a specific amount of data 5X5 matrix and then a 200 X 200 , this helped me alot, would it have been hard doing this with a for cycle?
Stephen23
Stephen23 2018년 8월 10일
편집: Stephen23 2018년 8월 10일
" would it have been hard doing this with a for cycle?"
Something like this perhaps (untested):
V = [rows that you want to get];
C = 5; % number of columns
N = numel(V);
M = nan(N,C);
for k = 1:N
M(k,:) = A(V(k)+(0:C-1));
end
thanks ,i just tested it, and subtracted both matrices from different methods to double check they were the same and boom, they were , thanks a bunch!

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