galpy.potential.planarPotential.__call__
galpy.potential.planarPotential.Rforce
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NAME:
phiforce
PURPOSE:
evaluate the phi force
INPUT:
R - Cylindrical radius phi= azimuth (optional) t= time (optional)
R - Cylindrical radius
phi= azimuth (optional)
t= time (optional)
OUTPUT:
F_phi(R,(phi,t)))
HISTORY:
2010-07-13 - Written - Bovy (NYU)