code: def evaluatePotentials(Pot,R,z,phi=None,t=0.,dR=0,dphi=0):
      
      return _evaluatePotentials(Pot,R,z,phi=phi,t=t,dR=dR,dphi=dphi)
docs: NAME:
  
         evaluatePotentials
  
      PURPOSE:
  
         convenience function to evaluate a possible sum of potentials
  
      INPUT:
  
         Pot - potential or list of potentials (dissipative forces in such a list are ignored)
  
         R - cylindrical Galactocentric distance (can be Quantity)
  
         z - distance above the plane (can be Quantity)
  
         phi - azimuth (can be Quantity)
  
         t - time (can be Quantity)
  
         dR= dphi=, if set to non-zero integers, return the dR, dphi't derivative instead
  
      OUTPUT:
  
         Phi(R,z)
  
      HISTORY:
  
         2010-04-16 - Written - Bovy (NYU)