assimble small victors into bigger one using for loop

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abdelrahman alhammadi
回答： Image Analyst 2018-10-12
what if I have vector a1= [1; -1] and a2= [ 1 ;-1 ] and so on ... the big matrix should be like F= [ 1; 0; 1] if the size was(2) how can I do that in a for loop ?
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abdelrahman alhammadi
abdelrahman alhammadi 2018-10-12
yeas if I have a vectors of the same length and I want to assemble them in bigger one

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回答（2 个）

Bruno Luong
Bruno Luong 2018-10-12
a1= [1; -1];
a2= [1 ;-1];
a = {a1 a2};
F = zeros(length(a)+1,1);
for i=1:2
F(i+[0,1]) = F(i+[0,1]) + a{i};
end
Image Analyst
Image Analyst 2018-10-12
Lacking any specific and complete rules other than giving a1, a2, to use a for loop, and to give the desired F, this works:
a1 = [1; -1]
a2 = [1 ; -1]
for k = 1 : 3
F(k) = 2 - k;
end

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