Read Parameters, Summary Statistics, and Savedata from Mplus Output

Extracts information from one or more Mplus output files, including fit statistics and parameters. Its is to parse all (supported) aspects of Mplus output and to combine these into a list object, with one element per output file identified.

readModels(
  target = getwd(),
  recursive = FALSE,
  filefilter,
  what = "all",
  quiet = TRUE
)

Arguments

target	the directory containing Mplus output files (.out) to parse OR the single output file to be parsed. May be a full path, relative path, or a filename within the working directory. Defaults to the current working directory. Example: "C:/Users/Michael/Mplus Runs"
recursive	optional. If TRUE, parse all models nested in subdirectories within target. Defaults to FALSE.
filefilter	a Perl regular expression (PCRE-compatible) specifying particular output files to be parsed within directory. See regex or http://www.pcre.org/pcre.txt for details about regular expression syntax.
what	a character vector denoting what aspects of Mplus output to extract. Defaults to "all", which will extract all supported output sections. See details for additional information.
quiet	whether to suppress printing to the screen the file currently being processed. Defaults to TRUE.

Value

A list with one mplus.model per file. Each mplus.model object is composed of elements containing major output sections, as detailed below. If target is a single file, then the top-level elements will be a single mplus.model object, not a list of files. Specific elements are:

input

Mplus input syntax parsed into a list by major section

warnings

Syntax and estimation warnings as a list

errors

Syntax and estimation errors as a list

data_summary

Output of SUMMARY OF DATA section, including cluster sizes and ICCs

sampstat

Sample statistics provided by OUTPUT: SAMPSTAT, if specified

covariance_coverage

Covariance coverage matrix for checking missingness patterns

summaries

Summary statistics from extractModelSummaries, having structure as specified by that function

parameters

Model parameters from extractModelParameters, having structure as specified by that function

class_counts

Latent class counts and proportions for models that include a categorical latent variable

indirect

Output of MODEL INDIRECT if available in output. Contains $overall and $specific data.frames for each indirect effect section

mod_indices

Model modification indices from extractModIndices, having structure as specified by that function

residuals

a list containing relevant information from OUTPUT: RESIDUALS

savedata_info

File information about SAVEDATA files related to this output

savedata

SAVEDATA file as an R data.frame, as described in getSavedata_Data

bparameters

an mcmc.list object containing the draws from the MCMC chains for a Bayesian model that uses the SAVEDATA: BPARAMETERS command

tech1

a list containing parameter specification and starting values from OUTPUT: TECH1

tech3

a list containing parameter covariance and correlation matrices from OUTPUT: TECH3

tech4

a list containing means, covariances, and correlations for latent variables from OUTPUT: TECH4

tech7

a list containing sample statistics for each latent class from OUTPUT: TECH7

tech8

a list containing optimization history of the model. Currently only supports potential scale reduction in BAYES. OUTPUT: TECH8

tech9

a list containing warnings/errors from replication runs for MONTECARLO analyses from OUTPUT: TECH9

tech10

a list containing model fit information from OUTPUT: TECH10

'

tech12

a list containing observed versus estimated sample statistics for TYPE=MIXTURE analyses from OUTPUT: TECH12

fac_score_stats

factor score mean, correlation, and covariance structure from SAMPLE STATISTICS FOR ESTIMATED FACTOR SCORES section

lcCondMeans

conditional latent class means and pairwise comparisons, obtained using auxiliary(e) syntax in latent class models

gh5

a list containing data from the gh5 (graphics) file corresponding to this output. (Requires rhdf5 package)

output

The entire, raw output file.

Details

The what parameter defaults to "all", which extracts all supported output. If you would like to extract a reduced set of output sections (especially to speed up the function when reading many files), specify the sections as a character vector from the following options:

c("input", "warn_err", "data_summary", "sampstat", "covariance_coverage", "summaries", "parameters", "class_counts", "indirect", "mod_indices", "residuals", "savedata", "bparameters", "tech1", "tech3", "tech4", "tech7", "tech8", "tech9", "tech10", "tech12", "fac_score_stats", "lcCondMeans", "gh5", "output")

Author

Michael Hallquist

Examples

if (FALSE) {
  allOutput <- readModels(
    "C:/Program Files/Mplus/Mplus Examples/User's Guide Examples", recursive=TRUE)
}