Get model parameters from structural equation models — get

Returns the coefficients (or posterior samples for blavaan models with summary = FALSE) from a structural equation model.

Usage

# S3 method for class 'blavaan'
get_parameters(x, summary = FALSE, standardize = FALSE, ...)

# S3 method for class 'lavaan'
get_parameters(x, standardize = FALSE, ...)

Arguments

x: A model of class lavaan or blavaan.
summary: Logical. For blavaan models, indicates whether the full posterior samples (summary = FALSE) or point estimates (summary = TRUE) should be returned.
standardize: Logical. If TRUE, standardized parameters are returned.
...: If standardize = TRUE, a type argument can be used, which is passed to lavaan::standardizedSolution() (or to blavaan::standardizedPosterior() for the posterior samples of blavaan models). For example, type can be "std.all" (the default), "std.lv" or "std.nox". See lavaan::standardizedSolution() for all values. Other arguments are not passed on.

Value

For blavaan models with summary = FALSE, the posterior samples as data frame, with one row per draw (chains pooled) and one column per free or defined parameter. If standardize = TRUE, fixed parameters are included, too. Else, a data frame with the columns Parameter, Estimate and Component.

Examples

m <- lavaan::cfa("visual =~ x1 + x2 + x3", data = lavaan::HolzingerSwineford1939)
get_parameters(m, standardize = TRUE, type = "std.lv")
#>        Parameter  Estimate Component
#> 1     visual=~x1 0.7236899    latent
#> 2     visual=~x2 0.5629087    latent
#> 3     visual=~x3 0.8013092    latent
#> 4         x1~~x1 0.8346429  residual
#> 5         x2~~x2 1.0649177  residual
#> 6         x3~~x3 0.6327684  residual
#> 7 visual~~visual 1.0000000  residual