class RooCurve: public TGraph, public RooPlotable

 Default constructor

 Create a 1-dim curve of the value of the specified real-valued expression
 as a function of x. Use the optional precision parameter to control
 how precisely the smooth curve is rasterized. Use the optional argument set
 to specify how the expression should be normalized. Use the optional scale
 factor to rescale the expression after normalization.
 If shiftToZero is set, the entire curve is shift down to make the lowest
 point in of the curve go through zero.

 Create a 1-dim curve of the value of the specified real-valued
 expression as a function of x. Use the optional precision
 parameter to control how precisely the smooth curve is
 rasterized.  If shiftToZero is set, the entire curve is shift
 down to make the lowest point in of the curve go through zero.

 Constructor of curve as sum of two other curves

 Csum = scale1*c1 + scale2*c2

 Destructor

 Perform initialization that is common to all curves

 Find lowest point in curve and move all points in curve so that
 lowest point will go exactly through zero

 Add points calculated with the specified function, over the range (xlo,xhi).
 Add at least minPoints equally spaced points, and add sufficient points so that
 the maximum deviation from the final straight-line segements is prec*(ymax-ymin),
 down to a minimum horizontal spacing of resolution*(xhi-xlo).

 Fill the range (x1,x2) with points calculated using func(&x). No point will
 be added at x1, and a point will always be added at x2. The density of points
 will be calculated so that the maximum deviation from a straight line
 approximation is prec*(ymax-ymin) down to the specified minimum horizontal spacing.

 Add a point with the specified coordinates. Update our y-axis limits.

 Return the number of events associated with the plotable object,
 it is always 1 for curves

 Return the number of events associated with the plotable object,
 in the given range. It is always 1 for curves

 Get the bin width associated with this plotable object.
 It is alwats zero for curves

 Print the name of this curve

 Print the title of this curve

 Print the class name of this curve

 Print the details of this curve

 Calculate the chi^2/NDOF of this curve with respect to the histogram
 'hist' accounting nFitParam floating parameters in case the curve
 was the result of a fit

 Return average curve value in [xFirst,xLast] by integrating curve between points
 and dividing by xLast-xFirst

 Find the nearest point to xvalue. Return -1 if distance
 exceeds tolerance

 Return linearly interpolated value of curve at xvalue. If distance
 to nearest point is less than tolerance, return nearest point value
 instead

 Return true if curve is identical to other curve allowing for given
 absolute tolerance on each point compared point.

 Printing interface