update.pumpresult {PUMP}

Update a pump call, tweaking some parameters (core function)

Description

Works on objects returned by pump_power(), pump_mdes(), or pump_sample(). One of the optional parameters can be a 'type = something' argument, where the "something" is either "power", "sample", or "mdes", if the call should be shifted to a different pump call (pump_power, pump_sample, or pump_mdes, respectively).

Usage

## S3 method for class 'pumpresult'
update(object, type = NULL, ...)

Arguments

object

pump result object.

type

string; can be "power", "mdes" or "sample", sets the type of the updated call (can be different from original).

...

parameters as specified in 'pump_power', 'pump_mdes', and 'pump_sample' that should be overwritten.

Value

a pumpresult object: results of a new call using parameters of old object with newly specified parameters replaced.

Examples

ss <- pump_sample( d_m = "d2.1_m2fc", MTP = "HO",
  typesample = "J", nbar = 200, power.definition = "min1",
  M = 5, MDES = 0.05, target.power = 0.5, tol = 0.05,
  Tbar = 0.50, alpha = 0.05, numCovar.1 = 5, R2.1 = 0.1,
  ICC.2 = 0.15, rho = 0, final.tnum = 1000 )

up <- update(ss, nbar = 40, tnum = 2000 )