ex_subplot.m

subplot(3,3,[2,3,5,6]); image(0);colormap(gray);axis off
title( '\bfgrand', 'fontsize', 18)
subplot(3,3,1); image(0);colormap(gray);axis off
title('\bfpetit', 'fontsize', 18);
subplot(3,3,[4,7]); image(0);colormap(gray);axis off 
title({'\bfvertical'}, 'fontsize', 18);
subplot(3,3,[8,9]); image(0);colormap(gray);axis off 
title({'\bfhorizontal'}, 'fontsize', 18);