cumulant {aster2}  R Documentation 
Cumulant Functions for Aster Models
Description
Calculate cumulant function and up to three derivatives for families known to the package.
Usage
cumulant(theta, fam, deriv = 0, delta)
Arguments
theta 
canonical parameter value. 
fam 
an object of class 
deriv 
the number of derivatives wanted. Must be nonnegative integer less than or equal to three. 
delta 
direction in which limit is taken. Cumulant
function is for family that is limit of family specified, limit
being for distributions with parameter

Value
a list containing some of the following components:
zeroth 
the value of the cumulant function at 
first 
the value of the first derivative at 
second 
the value of the second derivative at 
third 
the value of the third derivative at 
Note
Not intended for use by ordinary users. Provides R interface for testing to C code called by many other functions in the package.
See Also
Examples
cumulant(0.5, fam.bernoulli(), deriv = 3)
cumulant(0.5, fam.bernoulli(), deriv = 3, delta = 1)