function [pc] =  compare(F, Ftest);

trainClass = [1:3]';
testClass = [1 2 3]';

%We now compute percent correct:
train_ex = F';
test_ex = Ftest';
pc = nnClassFn(train_ex,test_ex,trainClass,testClass);

%pc is percent correct of first nearest neighbor.
%rankmat gives the top 30 matches for each test image.