standard euclidean distance, matlab

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Tomas
Tomas 2014-2-5
评论： Walter Roberson 2014-2-6
Helllo
I need help with standard euclidean distance, knew would someone help with matlab code ?
I can not use, matlab function, pdist, pdist2.
I need standard euclidean distance between two vectors.
Thanks.

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回答（1 个）

Walter Roberson
Walter Roberson 2014-2-5
sqrt(sum((v1 - v2).^2))
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Tomas
Tomas 2014-2-5
if it were arrays, how would it be?
Thank you for your help
Walter Roberson
Walter Roberson 2014-2-6
sqrt(sum((A1 ./ repmat(nanstd(A1), size(A1,1), 1) - A2 ./ repmat(nanstd(A2), size(A2,1), 1)).^2, 2))
This would be for taking the distance for the rows of A1 to the corresponding rows of A2.
I am thinking that possibly it should be different, like this:
sqrt(sum(((A1-A2) ./ repmat( nanstd([A1;A2]), size(A1,1), 1)).^2,2))

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