lavaan: lav_partable – R documentation

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lavaan

lav_partable

lavaan partable functions

Description

Utility functions related to the parameter table (partable)

Usage

# extract information from a parameter table
lav_partable_df(partable)
lav_partable_ndat(partable)
lav_partable_npar(partable)
lav_partable_attributes(partable, pta = NULL)

# generate parameter labels
lav_partable_labels(partable, blocks = c("group", "level"), 
                    group.equal = "", group.partial = "", type = "user")

# generate parameter table for specific models
lav_partable_independence(lavobject = NULL, lavdata = NULL,
    lavpta = NULL, lavoptions = NULL, lavsamplestats = NULL,
    lavh1 = NULL,
    sample.cov = NULL, sample.mean = NULL, sample.slopes = NULL,
    sample.th = NULL, sample.th.idx = NULL,
    sample.cov.x = NULL, sample.mean.x = NULL)

lav_partable_unrestricted(lavobject = NULL, lavdata = NULL, 
    lavpta = NULL, lavoptions = NULL, lavsamplestats = NULL, 
    lavh1 = NULL,
    sample.cov = NULL, sample.mean = NULL, sample.slopes = NULL, 
    sample.th = NULL, sample.th.idx = NULL,
    sample.cov.x = NULL, sample.mean.x = NULL) 

lav_partable_from_lm(object, est = FALSE, label = FALSE, 
    as.data.frame. = FALSE)

# complete a parameter table only containing a few columns (lhs,op,rhs)
lav_partable_complete(partable = NULL, start = TRUE)

# merge two parameter tables
lav_partable_merge(pt1 = NULL, pt2 = NULL, remove.duplicated = FALSE, 
    fromLast = FALSE, warn = TRUE)

# add a single parameter to an existing parameter table
lav_partable_add(partable = NULL, add = list())

Arguments

`partable`	A parameter table. see `lavParTable` for more information.
`blocks`	Character vector. Which columns in the parameter table should be taken to distinguish between different blocks of parameters (and hence be given different labels)? If `"blocks"` includes `"group"`, a suffix `".g"` and the group number (or group label) is added for the parameters of all but the first group. If `"blocks"` includes `"level"`, a suffix `".l"` and the level number is added for the parameters of all but the first level. If `"blocks"` includes, say `"foo"`, a suffix `".foo"` and the corresponding value of `"foo"` is added to all parameters.
`group.equal`	The same options can be used here as in the fitting functions. Parameters that are constrained to be equal across groups will be given the same label.
`group.partial`	A vector of character strings containing the labels of the parameters which should be free in all groups.
`type`	Character string. Can be either ‘user’ or ‘free’ to select all entries or only the free parameters from the parameter table respectively.
`lavobject`	An object of class ‘lavaan’. If this argument is provided, it should be the only argument. All the values for the other arguments are extracted from this object.
`lavdata`	An object of class ‘lavData’. The Data slot from a lavaan object.
`lavoptions`	A named list. The Options lsot from a lavaan object.
`lavsamplestats`	An object of class ‘lavSampleStats’. The SampleStats slot from a lavaan object.
`lavh1`	A named list. The h1 slot from a lavaan object.
`lavpta`	The pta (parameter table attributes) slot from a lavaan object.
`sample.cov`	Optional list of numeric matrices. Each list element contains a sample variance-covariance matrix for this group. If provided, these values will be used as starting values.
`sample.mean`	Optional list of numeric vectors. Each list element contains a sample mean vector for this group. If provided, these values will be used as starting values.
`sample.slopes`	Optional list of numeric matrices. Each list element contains the sample slopes for this group (only used when `conditional.x = TRUE`). If provided, these values will be used as starting values.
`sample.th`	Optional list of numeric vectors. Each list element contains a vector of sample thresholds for this group. If provided (and also sample.th.idx is provided), these values will be used as starting values.
`sample.th.idx`	Optional list of integers. Each list contains the threshold indices for this group.
`sample.cov.x`	Optional list of numeric matrices. Each list element contains a sample variance-covariance matrix for the exogenous variables for this group (only used when `conditional.x = TRUE`). If provided, these values will be used as starting values.
`sample.mean.x`	Optional list of numeric vectors. Each list element contains a sample mean vector for the exogenous variables for this group (only used when `conditional.x = TRUE`). If provided, these values will be used as starting values.
`est`	Logical. If TRUE, include the fitted estimates in the parameter table.
`label`	Logical. If TRUE, include parameter labels in the parameter table.
`as.data.frame.`	Logical. If TRUE, return the parameter table as a data.frame.
`object`	An object of class `lm`.
`start`	Logical. If TRUE, include a start column, based on the simple method for generating starting values.
`pta`	A list containing parameter attributes.
`pt1`	A parameter table.
`pt2`	A parameter table.
`remove.duplicated`	Logical. If `TRUE`, remove duplicated elements when merging two parameter tables.
`fromLast`	Logical. If `TRUE`, duplicated elements are considered from the bottom of the merged parameter table.
`warn`	Logical. If codeTRUE, a warning is produced when duplicated elements are found, when merging two parameter tables.
`add`	A named list.

A single row of a parameter table as a named list.

Examples

# generate syntax for an independence model
HS.model <- ' visual  =~ x1 + x2 + x3
              textual =~ x4 + x5 + x6
              speed   =~ x7 + x8 + x9 '

fit <- cfa(HS.model, data=HolzingerSwineford1939)
lav <- lav_partable_independence(fit)
as.data.frame(lav, stringsAsFactors = FALSE)


# how many free parameters?
lav_partable_npar(lav)

# how many sample statistics?
lav_partable_ndat(lav)

lavaan

Latent Variable Analysis

v0.6-10

GPL (>= 2)

Authors

Yves Rosseel [aut, cre] (<https://orcid.org/0000-0002-4129-4477>), Terrence D. Jorgensen [aut] (<https://orcid.org/0000-0001-5111-6773>), Nicholas Rockwood [aut] (<https://orcid.org/0000-0001-5931-183X>), Daniel Oberski [ctb], Jarrett Byrnes [ctb], Leonard Vanbrabant [ctb], Victoria Savalei [ctb], Ed Merkle [ctb], Michael Hallquist [ctb], Mijke Rhemtulla [ctb], Myrsini Katsikatsou [ctb], Mariska Barendse [ctb], Florian Scharf [ctb], Han Du [ctb]

Initial release

lav_partable

Description

Usage

Arguments

Examples

lavaan

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