Slice (Or contour) 3D function (in polar coordinate) transformed into cartesian coordinate

Dear all,

I hope you are doing well!

I have a function f=f(r,z); definied in polar coordinate!

z=0:0.1:1;

Theta=0:0.1:2*pi;

I transformed this function into cartesian coordiante;

[x,y] = pol2cart(Theta,r);

[X,Y, Z] = meshgrid(y,x,z);

For reasons of comparison, I have gathered all the points by:

X1=[ Y(:) X(:) Z(:)];

The function becoms f=f(X1(:,1),X1(:,2),X1(:,3)); size(f)=(nx*ny*nz, 3);

whene i uses the slice(x,y,z, f, [0 1], [0], [1]), an error is displayed, and this is normal because x and y are disordered.

Can any one help me to present this function into cartesian point.

Thank you in advance

[Rik]

Backup of the question:

Slice (Or contour) 3D function (in polar coordinate) transformed into cartesian coordinate

Dear all,

I hope you are doing well!

I have a function f=f(r,z); definied in polar coordinate!

z=0:0.1:1;

Theta=0:0.1:2*pi;

I transformed this function into cartesian coordiante;

[x,y] = pol2cart(Theta,r);

[X,Y, Z] = meshgrid(y,x,z);

For reasons of comparison, I have gathered all the points by:

X1=[ Y(:) X(:) Z(:)];

The function becoms f=f(X1(:,1),X1(:,2),X1(:,3)); size(f)=(nx*ny*nz, 3);

whene i uses the slice(x,y,z, f, [0 1], [0], [1]), an error is displayed, and this is normal because x and y are disordered.

Can any one help me to present this function into cartesian point.

Thank you in advance

Answer 1

[Torsten]

https://de.mathworks.com/matlabcentral/answers/95796-how-do-i-create-a-contour-plot-in-polar-coordinates

[Omar Idriss]

My function is in 3D ?

[Torsten]

https://de.mathworks.com/matlabcentral/answers/462205-how-to-plot-a-3d-surface-using-a-matrix-in-polar-coordinate

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

https://de.mathworks.com/matlabcentral/fileexchange/13200-3d-polar-plot