Finding Neighboring Vectors

Given the distance matrix, DistanceMatrix from ClassDistance.m, find for each row (person), the other column (person) whose pairwise distance is the least.

Contents

Get the size of the distance matrix

	[p,q] = size(DistanceMatrix);

For each person, find the closest other person

	for row = 1:p
			% Make a vector out of each row vector of the distance matrix
			V = DistanceMatrix(row,:);
			% Find the minimum non-zero value
			MinDist = min(V(V>0));
			% Find where this value occurred
			NearestNeighbor(2,row) = find(V==MinDist);

			% Display who is closest to whom
			disp(['Person ',num2str(row),' is closest to Person ',num2str(NearestNeighbor(2,row))]);
			% Plot all the pictures in a grid for evaluation of the algorithm
			subplot(5,ceil(p/5),row)
			hold on;
			title(['Person ',num2str(row)]);
			imshow(reshape(uint8(PicVex(:,row)),r,c,3))
	end

Person 1 is closest to Person 2
Person 2 is closest to Person 1
Person 3 is closest to Person 1
Person 4 is closest to Person 1
Person 5 is closest to Person 10
Person 6 is closest to Person 7
Person 7 is closest to Person 6
Person 8 is closest to Person 7
Person 9 is closest to Person 11
Person 10 is closest to Person 5
Person 11 is closest to Person 6

Published with MATLAB® 7.14