How to plot a 3D surface using a matrix in Polar coordinate?

Xun Huang

2019 5 月 15

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I have a meshed annular region (shown in image), I have no a analytical function z=f(x,y）but a matrix A stored z value of each node. furthermore, I know coordinates of every element in A matrix. Now, I want to plot the plot of z in this annular region. I know if the refion is rectandle, this is easy to do using mesh or surf. Anyone can help me? Tanks firstly.

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KSSV 2019 年 5 月 15 日

YOu can use surf for this. Convert your polar coordinates to cartesian using pol2cart. If not attach your data.

Xun Huang 2019 年 5 月 15 日

nice! Thanks for yhr answer!

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Jyotish Kumar 2019 年 5 月 22 日

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Hi,

I understand that you are trying to plot a 3D surface using a matrix in Polar coordinate. You can refer this link to find the detailed way to plot a 3D surface in a polar coordinate.

https://blogs.mathworks.com/pick/2011/11/11/3d-polar-plotting/