how to plot a unit sphere around a 3D object ?
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Hi,
I am actually working on 3D objects (.obj files), and I am trying to define à unit sphere on a 3D object, but I really don't have any idea how to do it and even how to searche, I don't know if it existe on matlab or should I see an other softwar. I want to obtain something like on this image:
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/165974/image.png)
Could you help me please.
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KSSV
am 9 Jun. 2016
Bearbeitet: KSSV
am 9 Jun. 2016
[x,y,z] = sphere ;
surf(x,y,z) ;
Generates the sphere with origin as center. If you want the center of sphere at [x1,y1,z1], (your desired center, which will be at half the length of your object) just add this point to [x,y,z].
[x,y,z] = sphere ;
xnew = x+x1 ; ynew = y+y1; znew = z+z1 ; % shift the origin to [x1,y1,z1]
surf(xnew,ynew,znew)
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