galpy.util.coords.cyl_to_spher_vec¶
- galpy.util.coords.cyl_to_spher_vec(vR, vT, vz, R, z)[source]¶
NAME:
cyl_to_spher_vec
PURPOSE:
transform vectors from cylindrical to spherical coordinates. vtheta is positive from pole towards equator.
INPUT:
vR - Galactocentric cylindrical radial velocity
vT - Galactocentric cylindrical rotational velocity
vz - Galactocentric cylindrical vertical velocity
R - Galactocentric cylindrical radius
z - Galactocentric cylindrical height
OUTPUT:
vr,vT,vtheta
HISTORY:
2020-07-01 - Written - James Lane (UofT)