Creating Polar mesh in matlab

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Reza Lashani
Reza Lashani 2021-1-13
编辑： Reza Lashani 2021-1-13
I want to plot a surface z = f(x,y) and it is desired to plot it on a circle surface. Is it possible in matlab or can create polar mesh on matlab?

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David Goodmanson
David Goodmanson 2021-1-13
编辑：David Goodmanson 2021-1-13
Ran in:
Hi Reza,
% make a rectangular grid of r and theta,
% then define x and y in the usual way
rr = 0:1:20;
thth = (0:.05:1)*2*pi;
[r th] = meshgrid(rr,thth);
x = r.*cos(th);
y = r.*sin(th);
z = 1 + x.^2 - y.^2;
surf(x,y,z)

更多回答（1 个）

Cris LaPierre
Cris LaPierre 2021-1-13
See this answer on how to do this using a rectangular matrix
https://www.mathworks.com/matlabcentral/answers/438319-use-surf-to-plot-a-circle-from-a-rectangle-matrix#answer_355074
See this blog post for how to do this with polar coordinates.
https://blogs.mathworks.com/pick/2011/11/11/3d-polar-plotting/
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Reza Lashani
Reza Lashani 2021-1-13
编辑：Reza Lashani 2021-1-13
Thank you cris. These articles was very useful to me.

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