Extracting elements from objects of class powPar {sse} | R Documentation |
powPar
by their name
except theta, n, and xi.
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.
pp(x, name)
x |
An object of class |
name |
A character indicating the name of the object to be extracted. |
Everything that can be stored within a list is possible.
The name pp
is an abbreviation for power parameter.
For extracting individual elements of n
, theta
and xi
the functions n
, theta
, or
xi
should be used.
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)