With this you may transform three-dimensional cartesian coordinates into three-dimensional polar coordinates or cylindrical coordinates and vice versa.
In a cartesian coordinate system (x|y|z) a point is located by its distance from each of three mutually perpendicular intersecting lines with the same unit of length.
In a polar coordinate system (r|phi|Theta) a point is located by its radius vector, the angle of rotation phi on the equatorial plane and the angle of elevation Theta from the equatorial plane.
In a cylindrical coordinate system (rho|phi|z) a point is located by its distance rho from the cylinder axis, the angle of rotation phi around the axis and the altitude z above the origin.
cartesian polar cylindrical x = 1 r = 1,7320508 rho = 1,4142136 y = 1 phi = 45° phi = 45° z = 1 Theta= 35,26439° z = 1