# power

0th

Percentile

##### Create a Power Link Object

Creates a link object based on the link function $\eta = \mu ^ \lambda$.

Keywords
models
##### Usage
power(lambda = 1)
lambda
a real number.
##### Details

If lambda is non-positive, it is taken as zero, and the log link is obtained. The default lambda = 1 gives the identity link.

##### Value

A list with components linkfun, linkinv, mu.eta, and valideta. See make.link for information on their meaning.

##### References

Chambers, J. M. and Hastie, T. J. (1992) Statistical Models in S. Wadsworth & Brooks/Cole.

make.link, family To raise a number to a power, see Arithmetic. To calculate the power of a test, see various functions in the stats package, e.g., power.t.test.
library(stats) power() quasi(link = power(1/3))[c("linkfun", "linkinv")]