simsem: plotCutoffNested – R documentation

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plotCutoffNested

Plot sampling distributions of the differences in fit indices between nested models with fit indices cutoffs

Description

This function will plot sampling distributions of the differences in fit indices between nested models if the nested model is true. The users may add cutoffs by specifying the alpha level.

Usage

plotCutoffNested(nested, parent, alpha = 0.05, cutoff = NULL, 
usedFit = NULL, useContour = T)

Arguments

`nested`	`SimResult` that saves the analysis results of nested model from multiple replications
`parent`	`SimResult` that saves the analysis results of parent model from multiple replications
`alpha`	A priori alpha level
`cutoff`	A priori cutoffs for fit indices, saved in a vector
`usedFit`	Vector of names of fit indices that researchers wish to plot the sampling distribution.
`useContour`	If there are two of sample size, percent completely at random, and percent missing at random are varying, the `plotCutoff` function will provide 3D graph. Contour graph is a default. However, if this is specified as `FALSE`, perspective plot is used.

Value

NONE. Only plot the fit indices distributions.

Author(s)

Sunthud Pornprasertmanit (psunthud@gmail.com)

Examples

## Not run: 
# Nested model: One factor
loading.null <- matrix(0, 6, 1)
loading.null[1:6, 1] <- NA
LY.NULL <- bind(loading.null, 0.7)
RPS.NULL <- binds(diag(1))
RTE <- binds(diag(6))
CFA.Model.NULL <- model(LY = LY.NULL, RPS = RPS.NULL, RTE = RTE, modelType="CFA")

# Parent model: two factors
loading.alt <- matrix(0, 6, 2)
loading.alt[1:3, 1] <- NA
loading.alt[4:6, 2] <- NA
LY.ALT <- bind(loading.alt, 0.7)
latent.cor.alt <- matrix(NA, 2, 2)
diag(latent.cor.alt) <- 1
RPS.ALT <- binds(latent.cor.alt, "runif(1, 0.7, 0.9)")
CFA.Model.ALT <- model(LY = LY.ALT, RPS = RPS.ALT, RTE = RTE, modelType="CFA")

# The actual number of replications should be greater than 10.
Output.NULL.NULL <- sim(10, n=500, model=CFA.Model.NULL) 
Output.NULL.ALT <- sim(10, n=500, model=CFA.Model.ALT, generate=CFA.Model.NULL)

# Plot the cutoffs in nested model comparison
plotCutoffNested(Output.NULL.NULL, Output.NULL.ALT, alpha=0.05)

## End(Not run)

simsem

SIMulated Structural Equation Modeling

v0.5-16

GPL (>= 2)

Authors

Sunthud Pornprasertmanit [aut], Patrick Miller [aut], Alexander Schoemann [aut] (<https://orcid.org/0000-0002-8479-8798>), Terrence D. Jorgensen [aut, cre] (<https://orcid.org/0000-0001-5111-6773>), Corbin Quick [ctb]

Initial release

2021-03-28