EstimateMAXSLOPE: Estimates MAXSLOPE base rate
Description
This function estimates the taxon base rate for a MAXSLOPE curve
Usage
EstimateMAXSLOPE(curve.x, curve.y)
Arguments
  
- curve.x
- X values of curve 
  
- curve.y
- Y values of curve 
Author
John Ruscio <ruscio@tcnj.edu> and Shirley Wang <shirleywang@g.harvard.edu>
Maintainer: John Ruscio <ruscio@tcnj.edu>
Details
Called by higher-order functions; users do not need to call this 
function directly.