R: lavaan matrix representation

lavMatrixRepresentation {lavaan}

R Documentation

lavaan matrix representation

Description

Extend the parameter table with a matrix representation.

Usage

lavMatrixRepresentation(partable, representation = "LISREL", 
                        as.data.frame. = TRUE)

Arguments

`partable`	A lavaan parameter table (as extracted by the `parTable` function, or generated by the `lavPartable` function).
`representation`	The matrix representation style. Currently, only the all-y version of the LISREL representation is supported.
`as.data.frame.`	If `TRUE`, the extended parameter table is returned as a data.frame.

Value

A list or a data.frame containing the original parameter table, plus three columns: a "mat" column containing matrix names, and a "row" and "col" column for the row and column indices of the model parameters in the model matrices.

Examples

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

fit <- cfa(HS.model, data=HolzingerSwineford1939)

# extract partable (only first six columns are needed)
partable <- parTable(fit)[,1:6]

# add matrix representation
lavMatrixRepresentation(partable)