eucdist2.m

来自「two methods of calculating eucledian dis」· M 代码 · 共 8 行

function d = eucdist(a,b)

if (size(a,1) ~= size(b,1))
   error('A and B should be of same dimensionality');
end

aa=sum(a.*a,1); bb=sum(b.*b,1); ab=a'*b; 
d = sqrt(abs(repmat(aa',[1 size(bb,2)]) + repmat(bb,[size(aa,2) 1]) - 2*ab));