Calculate link function and up to one derivative for
families known to the package.
Usage
link(xi, fam, deriv = 0, delta)
Arguments
Value
a list containing some of the following components:zeroththe value of the link function at $\xi$, a vector
of dimension $d$, where $d$is the dimension of $\xi$.firstthe value of the first derivative at $\xi$, a
$d \times d$ matrix, where $d$ is the dimension
of $\xi$ or a scalar if $\xi$ is scalar.
Note
Not intended for use by ordinary users. Provides R interface for testing
to C code called by many other functions in the package.