is_valid_lav_syntax: Function to check if lavaan model syntax is valid

In quantPsych/RMediation: Mediation Analysis Confidence Intervals

Function to check if lavaan model syntax is valid

Description

This function checks if the lavaan model syntax is valid. It does so by attempting to parse and fit the model in a safe environment. If the model syntax is invalid, the function will return an error message.

Usage

is_valid_lav_syntax(model, data = NULL)

Arguments

model	A character string representing the lavaan model to be fitted.
data	A data frame containing the observed variables.

Value

A logical value indicating whether the model syntax is valid.

Author(s)

Davood Tofighi [e-mail]

Examples

bad_model <- "y ~ x1 + x2 + x3 + x4 + x5 + x6 + x7 + x8 + x9"
data(HolzingerSwineford1939, package = "lavaan")
is_valid_lav_syntax(bad_model, HolzingerSwineford1939)
good_model <- "visual =~ x1 + x2 + x3
textual =~ x4 + x5 + x6
speed =~ x7 + x8 + x9
visual ~ speed
textual ~ speed"
is_valid_lav_syntax(good_model, HolzingerSwineford1939)

quantPsych/RMediation documentation built on March 4, 2024, 6 p.m.