The parameter of a beta distribution, used by
Objects from the Class
Objects can be created by calls of the form
new("BetaParameter", shape1, shape2).
Usually an object of this class is not needed on its own, it is
generated automatically when an object of the class Beta
W <- new("BetaParameter", shape1 = 1, shape2 = 1) shape2(W) # shape2 of this distribution is 1. shape2(W) <- 2 # shape2 of this distribution is now 2.