link {aster2} | R Documentation |
Calculate link function and up to one derivative for families known to the package.
link(xi, fam, deriv = 0, delta)
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.
link(0.3, fam.bernoulli(), deriv = 1) link(0.3, fam.bernoulli(), deriv = 1, delta = 1)