Revolving a 2D profile around any axis

Question

Stephen Purk 2020-3-23

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/512516-revolving-a-2d-profile-around-any-axis

评论： Ayan 2024-6-26

Hello, I'm trying to rotate a curve around the y - axis. The code is under:

figure

% Define our initial profile

t = 0:.01:1;

x = 2*pi*t + 1;

y = sin(2*pi*t) + 2;

plot(x,y);

figure

% We use the cylinder function to rotate and align

% with the z-axis, to produce a 3D solid

[X,Y,Z] = cylinder(y);

surf(X,Y,Z)

The problem is that the cylinder does not count the x coordinates from the 2D profile and only revolves the curve around the z - axis. Can anyone help?

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Answer 1

Devineni Aslesha 2020-3-26

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/512516-revolving-a-2d-profile-around-any-axis#answer_422096

在 MATLAB Online 中打开

The rotate function allows you to rotate a curve around any axis. To rotate the curve along y-axis, use the below code.

h = surf(X,Y,Z);
for i = 1:360
    rotate(h,[0 1 0], i);
    drawnow;
end

For more information, refer the following link.

https://www.mathworks.com/help/matlab/ref/rotate.html

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Ayan 2024-6-26

Hello,

If you have this plot:

t = 0:.01:1;

x = 2*pi*t + 1;

y = sin(2*pi*t) + 2;

plot(x,y);

figure

and want to get a surface plot from an x-y plot, how would I approach this? Essentially if the x axis is goin from 0-1, then revolve the x axis around the y axis and generate a surface plot. How would I go about this?

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