make.link
Create a Link for GLM Families
Description
This function create the link, inverse link, derivative and validity functions used in GLM families.
Usage
make.link(link)
Arguments
| link |
character string specifiying the link function,
"logit", "probit", "cauchit", "cloglog",
"identity", "log", "sqrt", "1/mu^2" or "inverse".
|
Value
an object of class "link-glm" with following components:
| linkfun |
link function with argument mu that transforms
from the scale of the mean to the scale of the linear
or additive predictor eta.
|
| linkinv |
function with argument eta that defines
the inverse of the link.
|
| mu.eta |
function with argument eta that defines
the derivative of the linkinv function.
|
| valideta |
logical function with argument eta that indicates the validity
of eta in linkinv.
|
| name |
argument of link name.
|
See Also
Examples
make.link("logit")
make.link("1/mu^2")
make.link(3) # same as make.link("cauchit")
make.link(10) # Error: "10" link not recognised