load iris.dat
data = iris;
k = 1;

featureNum = size(iris, 2)-1;
feature = iris(:, 1:end-1);
output = iris(:, end);

for i=1:featureNum,
	allCombination = combinat(1:featureNum, i);
	for j=1:size(allCombination,1);
		thisData = [data(:, allCombination(j,:)) output];
		looError = looknn(thisData, k);
		fprintf('Selected input: ');
		for k=1:size(allCombination,2),
			fprintf('%g ', allCombination(j,k));
		end
		fprintf(' ===> Leave-one-out error = %g\n', looError);
	end
end