%% ----------------------------------------------------------------
dx = 0.1;
dy = 0.1;
[x,y] = meshgrid(-2:dx:2,-2:dy:2);
z = x.^2 - y.^2;
surf(x,y,z);

set(gcf, 'PaperPositionMode', 'Manual');
set(gcf, 'PaperPosition', [0 0 7.0 2.0])
print -depsc zx2y2


