Matlab converts rectangular coordinates into polar coordinates, which requires a specific code, not the code for drawing coordinate systems, but the code for converting coordinates!

Matlab has the function of converting rectangular coordinates into polar coordinates.

cart2pol

Function: In MATLAB, this function is used to convert Cartesian coordinates into polar coordinates (cylindrical coordinates).

Syntax format:

[θ，ρ，Z] = cart2pol(X，Y，Z)

Convert three-dimensional Cartesian coordinates (x, y, z) into corresponding cylindrical coordinates (THETA, RHO, z). θ is the angle between the counterclockwise direction and the positive direction of the X axis, ρ is the distance between the projection of the point (x, y, z) on the OXY plane and the origin, and z is the height of the (x, y, z) coordinate from the OXY plane.

[θ，ρ]= cart 2 pol(X，Y)

Convert two-dimensional Cartesian coordinates (x, y) into corresponding polar coordinates (THETA, RHO).

Correlation functions: cart2sph, pol2cart, sph2cart.