How to measure the shortest distance among different points using Matlab

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M.S. Khan
M.S. Khan 2020 年 10 月 27 日
コメント済み: Jakob 2021 年 3 月 10 日
Lets suppoese i have the points as shown by B. For example, P1(1,1,2 ), P2(1,2,3 ) etc as shown by B. I want to measure the shortest distance among these points.
x = B(:,1), y =B(:,2) and z = B(:,3).
Thanks in advance for support from community members. Regards!
B =
1 1 3
1 2 3
2 3 1
2 3 2
3 1 1
3 3 1
3 3 2
  5 件のコメント
M.S. Khan
M.S. Khan 2020 年 10 月 28 日
Dear KSSV, i am trying to understand its documentation and then will apply. Thanks for your guidance. Regards!

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回答 (1 件)

Jakob
Jakob 2020 年 10 月 28 日
B = randi([-10 10],5,3); % just some random numbers
minimum = sqrt(sum((B(1,:)- B(2,:)).^2));
for i = 1 : size(B,1)-1
for j = i+1 : size(B,1)
minimum = min(minimum,sqrt(sum((B(i,:)- B(j,:)).^2)));
end
end
disp(minimum)
  3 件のコメント
Jakob
Jakob 2021 年 3 月 10 日
Hi again, sorry I can't reply in private to your email.
About your question:. "I think pdist2() can only be used for 2D, right.".
Be careful, pdist2() works different then pdist(), you can safely use
min(pdist(YOURMATRIX))
to measure the minimal distance for any dimension. It's basically the same as my code

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