this is my equation using matlab , i can't get it manually.
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dmat = reshape(sqrt(sum((xy(a,:)-xy(a',:)).^2,2)),N,N);
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njj1
il 19 Apr 2018
Modificato: njj1
il 19 Apr 2018
This looks like it's the distance from each (x,y) pair to every other (x,y) pair.
A_{i,j} = \sqrt{(x_i - x_j)^2}, where x = (x,y)
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njj1
il 19 Apr 2018
Yes, it is, but they do it in a clever, vectorized way, where they do not have any for loops to cycle through each i,j.
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