MATLAB画三维图

. .

五、'双叶双曲面

ezsurf('8*tan(u)*cos(v)','8.*tan(u)*sin(v)','2.*sec(u)',[-pi./2,3*pi./2,0,2*pi]) axis equal grid on axis square

xlabel('x轴');ylabel('y轴');zlabel('z轴'); title('双叶双曲面')

. . .

. .

六、双曲柱面 load clown

ezsurf('2*sec(u)','2*tan(u)','v',[-pi/2,pi/2,-3*pi,3*pi]) hold on %在原来的图上继续作图 ezsurf('2*sec(u)','2*tan(u)','v',[pi/2,3*pi/2,-3*pi,3*pi]) colormap(map) shading interp view(-15,30) axis equal grid on axis equal

xlabel('x轴');ylabel('y轴');zlabel('z轴'); title('双曲柱面')

. . .

. .

七、双曲抛物面（马鞍面） [X,Y]=meshgrid(-7:0.1:7); Z=X.^2./8-Y.^2./6; meshc(X,Y,Z); view(85,20) axis('square')

xlabel('x轴');ylabel('y轴');zlabel('z轴'); title('双曲抛物面')

或直接用：ezsurfc('X.^2./8-Y.^2./6')

. . .

. .

八、抛物柱面

[X,Y]=meshgrid(-7:0.1:7); Z=Y.^2./8; h=mesh(Z);

rotate(h,[1 0 1],180) %旋转处理 %axis([-8,8,-8,8,-2,6]); axis('square')

xlabel('x轴');ylabel('y轴');zlabel('z轴'); title('抛物柱面')

或直接用：ezsurfc('Y.^2./8')

. . .

. .

九、环面

ezmesh('(5+2*cos(u))*cos(v)','(5+2*cos(u))*sin(v)','2*sin(u)',[0,2*pi,0,2*pi]) axis equal grid on

xlabel('x轴');ylabel('y轴');zlabel('z轴'); title('环面')

. . .