colour.algebra.cartesian_to_cylindrical#
- colour.algebra.cartesian_to_cylindrical(a: ArrayLike) NDArrayFloat [source]#
Transform given cartesian coordinates array \(xyz\) to cylindrical coordinates array \(\rho\phi z\) (radial distance, azimuth and height).
- Parameters:
a (ArrayLike) – Cartesian coordinates array \(xyz\) to transform.
- Returns:
Cylindrical coordinates array \(\rho\phi z\), \(\rho\) is in range [0, +inf], \(\phi\) is in range [-pi, pi] radians i.e., [-180, 180] degrees, \(z\) is in range [0, +inf].
- Return type:
References
[Wikipedia06a], [Wikipedia05e]
Examples
>>> a = np.array([3, 1, 6]) >>> cartesian_to_cylindrical(a) array([ 3.1622776..., 0.3217505..., 6. ])