inst/models/nightly/PPML_test1L2M.R

In OpenMx/OpenMx: Extended Structural Equation Modelling

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#options(error = utils::recover)   # uncomment for more help with debugging
#options(warn=2)
require(OpenMx)


# Seed
set.seed(4)

# Data covariance matrix
dataCov <- rbind(c(4,2),
				 c(2,4))
dataMean <- c(1,2)

# Variable names
manifests <- c('X','Y')
latents <- c('G')

# Dimnames
colnames(dataCov) <- manifests
rownames(dataCov) <- manifests
names(dataMean) <- manifests

factorModel <- mxModel("Factor Model 1L2M",
      type="RAM",
      manifestVars = manifests,
      latentVars = latents,
	  
	  # Regression Loadings
      mxPath(from='G', to=manifests,value=c(1,2),free=FALSE),
	  
	  # Variances
      mxPath(from=manifests, arrows=2,value=c(1,1), labels=c('E1','E1')), # error variance
      mxPath(from=latents, arrows=2,values=1.0, labels=c("VG")), # variances of the latents
	 
	  # Latent means vector	 
      mxPath(from="one", to=latents, arrows=1, values=0, labels=c("MG"), free=TRUE),

	  mxData(dataCov, mean=dataMean, type="cov",numObs=500)
	  )

# Should be able to test fake latents, but there's a bug blocking the foldout function from working on this model
imxPPML.Test.Battery(factorModel, testFakeLatents=FALSE, tolerances=c(NA, .0001, .0001)) # NA -> Don't check covariance data w/ means