galpy.util.coords.rect_to_cyl

galpy.util.coords.rect_to_cyl(X, Y, Z)[source]

NAME:

rect_to_cyl

PURPOSE:

convert from rectangular to cylindrical coordinates

INPUT:

X, Y, Z - rectangular coordinates

OUTPUT:

R,phi,z

HISTORY:

2010-09-24 - Written - Bovy (NYU)

2019-06-21 - Changed such that phi in [-pi,pi] - Bovy (UofT)