I am trying to plot a 3D figure defined by z>=0:

1 次查看（过去 30 天）

显示更早的评论

Sultan Al-Hammadi 2018-10-13

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/423808-i-am-trying-to-plot-a-3d-figure-defined-by-z-0

关闭： MATLAB Answer Bot 2021-8-20

I triY(I),Z(I),'.'); xlabel('X'); ylabel('Y'); zlabel('Z');

Please help me

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

此问题已关闭。

回答（1 个）

Bruno Luong 2018-10-13

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/423808-i-am-trying-to-plot-a-3d-figure-defined-by-z-0#answer_341225

编辑：Bruno Luong 2018-10-13

在 MATLAB Online 中打开

x = linspace(-2,2,50); 
y = linspace(-2,2,50);
z = linspace(-0.1,2,50);
x = reshape(x,[],1,1);
y = reshape(y,1,[],1);
z = reshape(z,1,1,[]);
R2 = x.^2+y.^2+z.^2;
I = R2>=1 & R2<=4 & z>=0;
isosurface(x,y,z,I,0.5); % 0.5 is middle of 0 and 1
axis equal