lavMatrixRepresentation: lavaan matrix representation
In nietsnel/psindex: Parameter Stability Index

Description Usage Arguments Value See Also Examples

Extend the parameter table with a matrix representation.

1 2	lavMatrixRepresentation(partable, representation = "LISREL", add.attributes = FALSE, as.data.frame. = TRUE)

`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.
`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.

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.

lavParTable, parTable

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")]