close all
figure

plot (1:10, 0.5*ones(1,10), '--k', 'linewidth', 0.5);
hold on
plot (1:10, 1*ones(1,10), '--k', 'linewidth', 1);
plot (1:10, 2*ones(1,10), '--k', 'linewidth', 2);
plot (1:10, 3*ones(1,10), '--k', 'linewidth', 3);
plot (1:10, 4*ones(1,10), '--k', 'linewidth', 4);
plot (1:10, 5*ones(1,10), '--k', 'linewidth', 5);
plot (1:10, 6*ones(1,10), '--k', 'linewidth', 6);
plot (1:10, 7*ones(1,10), '--k', 'linewidth', 7);
plot (1:10, 8*ones(1,10), '--k', 'linewidth', 8);
plot (1:10, 9*ones(1,10), '--k', 'linewidth', 9);
plot (1:10, 10*ones(1,10), '--k', 'linewidth', 10);
plot (1:10, 11*ones(1,10), '--k', 'linewidth', 11);
plot (1:10, 12*ones(1,10), '--k', 'linewidth', 12);

print -dpng tst_stipple.png