code: def evaluateplanarPotentials(Pot,R,phi=None,t=0.,dR=0,dphi=0):
      
      return _evaluateplanarPotentials(Pot,R,phi=phi,t=t,dR=dR,dphi=dphi)
docs: NAME:
  
         evaluateplanarPotentials
  
      PURPOSE:
  
         evaluate a (list of) planarPotential instance(s)
  
      INPUT:
  
         Pot - (list of) planarPotential instance(s)
  
         R - Cylindrical radius (can be Quantity)
  
         phi= azimuth (optional; can be Quantity)
  
         t= time (optional; can be Quantity)
  
         dR=, dphi= if set to non-zero integers, return the dR,dphi't derivative instead
  
      OUTPUT:
  
         Phi(R(,phi,t))
  
      HISTORY:
  
         2010-07-13 - Written - Bovy (NYU)