prepareMixedEffectDataset: Prepare Dataset for Parametric Bootstrap

In robustlmm: Robust Linear Mixed Effects Models

Prepare Dataset for Parametric Bootstrap

Description

This function runs lmer and extracts all information needed to generate new datasets using parametric bootstrap later.

Usage

prepareMixedEffectDataset(
  formula,
  data,
  REML = TRUE,
  overrideBeta,
  overrideSigma,
  overrideTheta,
  ...
)

Arguments

formula	passed on to lmer
data	passed on to lmer
REML	passed on to lmer
overrideBeta	use to override beta used to simulate new datasets, by default getME(fm, "beta") where fm is the fitted model returned by lmer.
overrideSigma	use to override sigma used to simulate new datasets, by default getME(fm, "sigma") where fm is the fitted model returned by lmer.
overrideTheta	use to override theta used to simulate new datasets, by default getME(fm, "theta") where fm is the fitted model returned by lmer.
...	all additional arguments are added to the returned list.

Value

List that can be passed to generateMixedEffectDatasets.

data:	the original dataset
X:	the X matrix as returned by getME
Z:	the Z matrix as returned by getME
Lambda:	the Lambda matrix as returned by getME
numberOfFixedEffects:	the number of fixed effects coefficients
numberOfRandomEffects:	the number of random effects
numberOfRows:	number of rows in the generated dataset
trueBeta:	true values used for beta
trueSigma:	true value used for sigma
trueTheta:	true values used for theta
formula:	formula to fit the model using lmer
...:	additional arguments passed via ...

Author(s)

Manuel Koller

Examples

  preparedDataset <- prepareMixedEffectDataset(Reaction ~ Days + (Days|Subject), sleepstudy)
  str(preparedDataset)

robustlmm documentation built on June 8, 2025, 12:20 p.m.