Type: Package
Title: Import Output from LISREL into R
Version: 0.3
Depends: R (≥ 2.15.0)
Author: Sacha Epskamp
Maintainer: Sacha Epskamp <mail@sachaepskamp.com>
Description: This is an unofficial package aimed at automating the import of LISREL output in R. This package or its maintainer is not in any way affiliated with the creators of LISREL and SSI, Inc.
License: GPL-2
NeedsCompilation: no
Packaged: 2024-02-07 01:59:22 UTC; sachaepskamp
Repository: CRAN
Date/Publication: 2024-02-07 12:50:13 UTC

Import LISREL output in R.

Description

This is an unofficial package aimed at automating the import of LISREL output in R. This package or its maintainer is not in any way affiliated with the creators of LISREL and SSI, Inc.

Author(s)

Sacha Epskamp (mail@sachaepskamp.com)

Maintainer: Sacha Epskamp <mail@sachaepskamp.com>

References

github.com/SachaEpskamp/lisrelToR

Methods for lisrel objects

Description

Print method prints LISREL output file to the console, summary method returns RAM of parameter estimates as given by semPlotModel from the semPlot package and plot method calls semPaths from the semPlot package.

Usage

## S3 method for class 'lisrel'
print(x, ...)

Arguments

x

output of readLisrel

...

Not used

Author(s)

Sacha Epskamp <mail@sachaepskamp.com>

Extract LISREL matrices from lisrel object.

Description

This function can be used to extract matrices from the output of readLisrel.

Usage

lisrelMatrix(object, matrix, group = 1, type = "est")

Arguments

object

A "lisrel" object obtained by readLisrel.

matrix

Specification of the matrix to be extracted. See details.

group

An integer specifying which group the matrix should be extracted from.

type

Specification of the type of matrix to be extracted.

Details

LisrelToR uses the following names for the model matrices:

LY

Lambda-Y matrix.

PS

Psi matrix.

BE

Beta matrix.

TE

Theta-Epsilon matrix.

TY

Tau-Y matrix.

AL

Alpha matrix.

LX

Lambda-X matrix.

PH

Phi matrix.

GA

Gamma matrix.

TD

Theta-Delta matrix.

TX

Tau-X matrix.

KA

Kappa

ObsCovs

The observed covariance matrix, or a list of such matrices for each group.

ImpCovs

The implied covariance matrix, or a list of such matrices for each group.

Furthermore, lisrelToR uses the following names for matrix types:

est

Parameter estimates

se

Standard errors

t

t-values

parSpec

Parameter numbers

Value

A matrix.

Author(s)

Sacha Epskamp <mail@sachaepskamp.com>

References

Joreskog, K. G., & Sorbom, D. (1996). LISREL 8 user's reference guide. Scientific Software.

See Also

readLisrel

Examples

## Measurment invariance example:
modFile <- system.file("extdata", "mi1.OUT", package = "lisrelToR")
Lis <- readLisrel(modFile)

# Extract Lambda-Y for group 2:
lisrelMatrix(Lis,"LY", group = 2)

Read LISREL matrices into R

Description

This function scans LISREL (Joreskog & Sorbom, 1996) output for model matrices and fit indices.

Usage

readLisrel(x)

Arguments

x

String indicating the location of a LISREL output file.

Details

LisrelToR uses the following names for the model matrices:

LY

Lambda-Y matrix.

PS

Psi matrix.

BE

Beta matrix.

TE

Theta-Epsilon matrix.

TY

Tau-Y matrix.

AL

Alpha matrix.

LX

Lambda-X matrix.

PH

Phi matrix.

GA

Gamma matrix.

TD

Theta-Delta matrix.

TX

Tau-X matrix.

KA

Kappa

ObsCovs

The observed covariance matrix, or a list of such matrices for each group.

ImpCovs

The implied covariance matrix, or a list of such matrices for each group.

Furthermore, lisrelToR uses the following names for matrix types:

est

Parameter estimates

se

Standard errors

t

t-values

parSpec

Parameter numbers

Value

A list of class "lisrel" contaning:

fitIndices

Fit indices, currently not supported.

matrices

A list contaning the model matrices. For each group this list conains a list with for each matrix (using LISREL style naming, see details) a list contaning elements est for parameter estimates, se for standard errors, t for t-values and parSpec for parameter numbers. Use lisrelMatrix to extract the matrices.

variables

Currently not used.

Covariances

A list with elements implied and observed containing the implied and observed covariance matrices.

Author(s)

Sacha Epskamp <mail@sachaepskamp.com>

References

Joreskog, K. G., & Sorbom, D. (1996). LISREL 8 user's reference guide. Scientific Software.

See Also

lisrelMatrix

Examples

## Measurment invariance example:
modFile <- system.file("extdata", "mi1.OUT", package = "lisrelToR")
Lis <- readLisrel(modFile)

# Extract Lambda-Y for group 2:
lisrelMatrix(Lis,"LY", group = 2)

# Structure of object:
str(Lis)

# Print full LISREL output to console:
print(Lis)