lavMatrixRepresentation: lavaan matrix representation

In yrosseel/lavaan: Latent Variable Analysis

lavaan matrix representation

Description

Extend the parameter table with a matrix representation.

Usage

lavMatrixRepresentation(partable, representation = "LISREL", 
                        allow.composites = TRUE,
                        add.attributes = FALSE, as.data.frame. = TRUE)

Arguments

partable	A lavaan parameter table (as extracted by the parTable function, or generated by the lavPartable function).
representation	Character. The matrix representation style. Currently, only the all-y version of the LISREL representation is supported.
allow.composites	Logical. If TRUE, and the model syntax contains the "<~" operator, handle the lhs as proper composites. If FALSE, use the old (<0.6-20) approach.
add.attributes	Logical. If TRUE, additional information about the model matrix representation is added as attributes.
as.data.frame.	Logical. 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.

See Also

lavParTable, parTable

Examples

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

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

# extract partable
partable <- parTable(fit)

# add matrix representation (and show only a few columns)
lavMatrixRepresentation(partable)[,c("lhs","op","rhs","mat","row","col")]

yrosseel/lavaan documentation built on April 14, 2025, 1:26 a.m.