covlevs: A Function to Extract Covariate Levels for DIF Visualization

In jsakaluk/scripty: scripty: Automated Syntax Generation of Measurement Models

Description

This function takes the outputted df from prods and generates the lavaan script necessary to fit a RFA model of uniform and non-uniform DIF

Usage

covlevs(df, covname, covmin, covmax)

Arguments

df	input data frame consisting of factor indicators and DIF covariate
covname	input character vector name for DIF covariate in df
covmin	input numeric for minimum value of covariate to begin estimating unidimensional factor models
covmax	input numeric for maximum value of covariate to begin estimating unidimensional factor models

Value

a range of values within the covariate

Examples

levs <- covlevs(df, covname = "pers.lad", covmin = 3, covmax = 8)

jsakaluk/scripty documentation built on Dec. 31, 2021, 9:17 p.m.