galpy.potential.evaluateplanarphiforces

galpy.potential.evaluateplanarphiforces(R, Pot, phi=None, t=0.0)

NAME:

evaluateplanarphiforces

PURPOSE:

evaluate the phiforce of a (list of) planarPotential instance(s)

INPUT:

R - Cylindrical radius

Pot - (list of) planarPotential instance(s)

phi= azimuth (optional)

t= time (optional)

OUTPUT:

F_phi(R(,phi,t))

HISTORY:

2010-07-13 - Written - Bovy (NYU)