curvefit08.m

数值分析与计算的PPT幻灯片与MAT源码

%curvefit08.m

x=-1.5:0.3:1.5;
y=-1:0.2:1;
[a,b]=meshgrid(x,y);
z=sqrt(4-a.^2/9-b.^2/4);
subplot(2,1,1)
surf(a,b,z)
title(' x^2/9+y^2/4+z^2=4的默认光线源色图 ')
xlabel('x')
ylabel('y')
zlabel('z')
subplot(2,1,2)
surfl(a,b,z)
title('x^2/9+y^2/4+z^2=4光线源转动45度角的色图')
xlabel('x')
ylabel('y')
zlabel('z')