How can I process all the possible pairs of arrays without using 2 nested for loops?

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FredMat 2024-3-17

评论： Walter Roberson 2024-3-18

I have a number of arrays and I want to compute a distance (using a home made function) between all possible pairs.

Right now I have 2 for loops like this

for i=1:(N-1)
    for j=(i+1):N
        applymyfunction (array(i), array(j))
    end
end

I was wondering if there was a way to do this without using nested loops.

Thanks - F.

Stephen23 2024-3-18

编辑：Stephen23 2024-3-18

I don't see any particular disadvantage in using loops:

What is your specific reason for avoiding loops?

Walter Roberson 2024-3-17

if all(triu(FirstMatrix) == triu(SecondMatrix), 'all')

FredMat 2024-3-18

编辑：FredMat 2024-3-18

Maybe "compare" was not the right word here.

I rewrote my question. Hopefully, it's more clear.

Walter Roberson 2024-3-18

pdist2() or pdist(), specifying a function handle as the distance function.

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