Get interaction plot for lavaan model — get_lavaan_interaction

This function generates an interaction plot from a lavaan model with a 2-way (x*w) interaction.

Usage

get_lavaan_interaction_plot(model, x, w, y, values_at = NULL)

Arguments

model: lavaan object
x: (character) variable name to plot on the x axis
w: (character) variable name to plot on separate lines (moderator)
y: (character) variable name indicating the outcome
values_at: (named list) values at which to plot x and w (default -1, 0, and 1 for both)

Value

ggplot2 plot

Details

The predicted values are calculated using lavaan::lavPredictY() for the variable given in y, and observed variables are extracted from the model object using lavaan::lavNames(). All other variables are assumed to be 0, so the y-axis on the plot will only be meaningful if all observed variables were centered prior to entering the model.

Examples

library(lavaan)
#> This is lavaan 0.6-15
#> lavaan is FREE software! Please report any bugs.
"y2 ~ x1 + x2 + x1:x2" |>
   sem(df) |>
   get_lavaan_interaction_plot(x="x1", w="x2", y="y2")