figure(1)
colormap gray

for i = 1:10
  eval(sprintf('load sample%d.dat; sample = sample%d', i-1, i-1));
  for j = 1:10
    subplot(10,10,(i-1)*10+j);    
    imagesc(reshape(sample(:,j),5,5))
    set(gca, 'xtick', [], 'ytick', [])
    axis square
    drawnow
  end
end