19 lines
466 B
Matlab
19 lines
466 B
Matlab
function [D2] = dist2(X, Y)
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% Calculates the squares of the distances of X and Y
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%
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% X: A mxd array with m d-dimentional points
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% Y: A nxd array with n d-dimentional points
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% d: Must be the same
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[~, d1] = size(X);
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[~, d2] = size(Y);
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if d1 ~= d2
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error('X,Y column dimensions must match');
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end
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%D2 = sqrt((X.^2)*ones(d,m) -2*X*Y' + ones(n,d)*(Y.^2)');
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D2 = max(sum(X.^2, 2) - 2 * X*Y' + sum(Y.^2, 2)', 0);
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D2 = sqrt(D2);
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end
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