Extracting elements from objects of class powPar {sse}R Documentation

Extracting all elements of an object of class powPar by their name except theta, n, and xi.

Description

All information needed for the power-function should be provided by an object of class powPar. To extract this information the pp should be used.

Usage

pp(x, name)

Arguments

x

An object of class powPar.

name

A character indicating the name of the object to be extracted.

Value

Everything that can be stored within a list is possible.

Note

The name pp is an abbreviation for power parameter.

See Also

For extracting individual elements of n, theta and xi the functions n, theta, or xi should be used.

Examples

psi <- powPar(theta = seq(from = 0.5, to = 1.5, by = 0.5),
              n = seq(from = 10, to = 30, by = 10),
              muA = 0,
              muB = 1)
              

pp(psi, name = "muA")

## an example of usage
powFun <- function(psi){
  power.t.test(n = n(psi),
               delta = pp(psi, "muA") - pp(psi, "muB"),
               sd = theta(psi)
               )$power
}

## testing the power-function
powFun(psi)


[Package sse version 0.7-11 Index]