Description Usage Arguments Value Note See Also Examples
Calculate link function and up to one derivative for families known to the package.
1 
xi 
mean value parameter value, a numeric vector. 
fam 
an object of class 
deriv 
the number of derivatives wanted. Must be either zero or one. 
delta 
direction in which limit is taken. Link function is for family that is limit of family specified, limit being for distributions with canonical parameter theta + s delta, the limit being as s to infinity. May be missing, in which case delta = 0 is assumed, which is the same as no limit being taken. 
a list containing some of the following components:
zeroth 
the value of the link function at xi, a vector of dimension d, where d 
is the dimension of xi.
first 
the value of the first derivative at xi, a d by d matrix, where d is the dimension of xi or a scalar if xi is scalar. 
Not intended for use by ordinary users. Provides R interface for testing to C code called by many other functions in the package.
1 2  link(0.3, fam.bernoulli(), deriv = 1)
link(0.3, fam.bernoulli(), deriv = 1, delta = 1)

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