lav2lvnet: Convert lavaan model to lvnet model matrices

In lvnet: Latent Variable Network Modeling

Description

This function can be used to easily generate input matrices for lvnet based on a lavaan model.

Usage

lav2lvnet(model, data, std.lv = TRUE, lavaanifyOps = list(auto = TRUE, std.lv = std.lv))

Arguments

model	Lavaan model syntax
data	The dataset. Only used to extract order of variables names from the columnnames.
std.lv	Should the model be identified by constraining latent variable variance to 1. Defaults to TRUE unlike lavaan! This is because the starting values work better for this identification.
lavaanifyOps	A list with other options sent to lavaanify

Value

A list with the model matrices for lambda, psi, theta and beta

Author(s)

Sacha Epskamp <[e-mail]>

Examples

## Not run: 
library("lavaan")

# Load dataset:
data(HolzingerSwineford1939)
Data <- HolzingerSwineford1939[,7:15]

# lavaan model
HS.model <- '
visual  =~ x1 + x2 + x3
textual =~ x4 + x5 + x6
speed   =~ x7 + x8 + x9 '

# fit via lavaan:
lavFit <- cfa(HS.model, HolzingerSwineford1939[7:15],std.lv=TRUE)

# Fit via lvnet:
mod <- lav2lvnet(HS.model, HolzingerSwineford1939[7:15])
lvnetFit <- lvnet(Data, lambda = mod$lambda, psi = mod$psi)

# Compare:
Compare <- data.frame(
  lvnet = round(unlist(lvnetFit$fitMeasures)[c("npar","df","chisq","fmin","aic","bic",
                                              "rmsea","cfi","tli","nfi","logl")],3),
  lavaan = round(fitMeasures(lavFit)[c("npar","df","chisq","fmin","aic","bic","rmsea",
                                      "cfi","tli","nfi","logl")],3))

Compare

## End(Not run)

Example output

Loading required package: OpenMx
To take full advantage of multiple cores, use:
  mxOption(NULL, 'Number of Threads', parallel::detectCores()) #now
  Sys.setenv(OMP_NUM_THREADS=parallel::detectCores()) #before library(OpenMx)
This is lavaan 0.6-3
lavaan is BETA software! Please report any bugs.

Attaching package: 'lavaan'

The following object is masked from 'package:OpenMx':

    vech

          lvnet    lavaan
npar     21.000    21.000
df       24.000    24.000
chisq    85.306    85.306
fmin      0.142     0.142
aic    7517.490  7517.490
bic    7595.339  7595.339
rmsea     0.092     0.092
cfi       0.931     0.931
tli       0.896     0.896
nfi       0.907     0.907
logl  -3737.745 -3737.745

lvnet documentation built on June 21, 2019, 9:06 a.m.