Orientation of axes to a best-fit plane

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Animesh Anand 2023-7-19

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https://ww2.mathworks.cn/matlabcentral/answers/1997738-orientation-of-axes-to-a-best-fit-plane

评论： Animesh Anand 2023-7-27

I had .xyz data. I fiited the data to a best-fit plane. Now I want to rotate the axes such that the best-fit plane lies on xy plane (z=0). Is there any way i can do it ?

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Mathieu NOE 2023-7-20

why not simply retrieve the z data of your fit plane to the z data of your experimental data ?

you may need to interpolate the plane z coordinates to the x,y experimental data coordinates

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Answer 1

Pranjal Saxena 2023-7-25

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Hi Animesh,

I understand that you want to rotate the axes such that this best-fit plane lies on xy plane (z=0).

I would like to suggest you use “rotate” to rotate the best-fit plane accordingly.

You can refer to the following MATLAB Documentation for more information about how to rotate object about specified origin and direction:

Rotate object about specified origin and direction - MATLAB rotate (mathworks.com)

I hope this helps you.

Warm Regards,

Pranjal.

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Animesh Anand 2023-7-27

If i use 'rotate', it will only rotate the best-fit plane not the whole thing. But the distance of fit plane from the xyz points will get changed. What I want here is to rotate the axes so that other things remain as it is.

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