galpy.potential.evaluatezforces¶
- galpy.potential.evaluatezforces(Pot, R, z, phi=None, t=0.0, v=None)[source]¶
NAME:
evaluatezforces
PURPOSE:
convenience function to evaluate a possible sum of potentials
INPUT:
Pot - a potential or list of potentials
R - cylindrical Galactocentric distance (can be Quantity)
z - distance above the plane (can be Quantity)
phi - azimuth (optional; can be Quantity)
t - time (optional; can be Quantity)
v - current velocity in cylindrical coordinates (optional, but required when including dissipative forces; can be a Quantity)
OUTPUT:
F_z(R,z,phi,t)
HISTORY:
2010-04-16 - Written - Bovy (NYU)
2018-03-16 - Added velocity input for dissipative forces - Bovy (UofT)