readLisrel {lisrelToR}

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 <[e-mail]>

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)