Revolving a 2D plot around its vertical axis to generate 3D surface

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Asser Abdelgawad 2022-6-13

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https://ww2.mathworks.cn/matlabcentral/answers/1739565-revolving-a-2d-plot-around-its-vertical-axis-to-generate-3d-surface

评论： Matt J 2022-6-16

While this solution is helpful, the usage of repmat makes it so that the values are repeated and not unique. What I would like to do is convert to polar and rotate without repeating values. Is there a way to execute the revolution without repmat?

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SAA 2022-6-13

编辑：SAA 2022-6-13

cart2pol would transform to polar from cartesian.

Asser Abdelgawad 2022-6-13

Hmm but is there a way to do it besides repmat? For instance:

theta = linspace(0, 2*pi, 100);

for i=1:100

theta=pi/180*theta(i);

t_theta=X.*cos(theta)+Y.*sin(theta);

vals=interp1(x , y, t_theta(:),'pchip');

end

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采纳的回答

Matt J 2022-6-13

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1739565-revolving-a-2d-plot-around-its-vertical-axis-to-generate-3d-surface#answer_984915

https://www.mathworks.com/matlabcentral/answers/1716995-revolving-a-curve-about-the-y-axis-to-generate-a-3d-surface#answer_962060

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Asser Abdelgawad 2022-6-16

So the IFFT function yields different results than the analytical inverse fourier transform? I did know that to be honest. OK, so you're saying I'm better off coding the transform function from scratch, with the integral and all?