NAME:
plot
PURPOSE:
plot the potential
INPUT:
t= time tp plot potential at
rmin= minimum R at which to calculate
rmax= maximum R
nrs= grid in R
zmin= minimum z
zmax= maximum z
nzs= grid in z
effective= (False) if True, plot the effective potential Phi + Lz^2/2/R^2
Lz= (None) angular momentum to use for the effective potential when effective=True
ncontours - number of contours
justcontours= (False) if True, just plot contours
savefilename - save to or restore from this savefile (pickle)
xrange, yrange= can be specified independently from rmin,zmin, etc.
OUTPUT:
plot to output device
HISTORY:
2010-07-09 - Written - Bovy (NYU)
2014-04-08 - Added effective= - Bovy (IAS)