@spiceErrorCheck<EOL>def reccyl(rectan):
rectan = stypes.toDoubleVector(rectan)<EOL>radius = ctypes.c_double(<NUM_LIT:0>)<EOL>lon = ctypes.c_double(<NUM_LIT:0>)<EOL>z = ctypes.c_double(<NUM_LIT:0>)<EOL>libspice.reccyl_c(rectan, ctypes.byref(radius), ctypes.byref(lon),<EOL>ctypes.byref(z))<EOL>return radius.value, lon.value, z.value<EOL>
Convert from rectangular to cylindrical coordinates.

http://naif.jpl.nasa.gov/pub/naif/toolkit_docs/C/cspice/reccyl_c.html

:param rectan: Rectangular coordinates of a point.
:type rectan: 3-Element Array of floats
:return:
        Distance from z axis,
        Angle (radians) from xZ plane,
        Height above xY plane.
:rtype: tuple