to_formula: Convert 'mp_data' to a 'stats::formula' to be used for...

In mlmpower: Power Analysis and Data Simulation for Multilevel Models

Convert mp_data to a stats::formula to be used for lme4::lmer

Description

Produces the formula including the centering functions based on a data set generated with generate.

Usage

to_formula(data, nested = FALSE)

Arguments

data	the mp_data to be coerced.
nested	logical value, if true then produce the nested restricted model

Value

a stats::formula

Examples

# Specify model
model <- (
    outcome('Y')
    + within_predictor('X')
    + effect_size(
        icc = 0.2,
        within = 0.3
    )
)
# Set seed
set.seed(198723)
# Create formula based on data set
model |> generate(5, 50) |> to_formula()

mlmpower documentation built on June 8, 2025, 11:07 a.m.