extract: Extract the values within model output files.

In IALSA/IalsaSynthesis: Synthesizing Information Across Collaborating Research

Description

Functions that extract the values within model output files.

Usage

extract_scalar_string(regex, source)

extract_scalar_float(regex, source)

extract_named_wald(parameter_name, mplus_output)

extract_output_filename(mplus_output, regex = "\\bDATA:\\s+File = (.+);.*")

extract_free_parameter_count(
  mplus_output,
  regex = "\\bNumber of Free Parameters\\s+(\\d{1,})\\b"
)

extract_loglikelihood(
  mplus_output,
  regex = "\\bLoglikelihood\\s+H0 Value\\s+([-\\d\\.]+)\\b"
)

extract_scaling_correction(
  mplus_output,
  regex = "\\bH0 Scaling Correction Factor\\s+([-\\d\\.]+)\\s+for MLR\\b"
)

extract_aic(
  mplus_output,
  regex = "\\bAkaike \\(AIC\\)\\s+([-\\d\\.]+)\\b"
)

extract_bic(
  mplus_output,
  regex = "\\bBayesian \\(BIC\\)\\s+([-\\d\\.]+)\\b"
)

extract_bic_adjusted(
  mplus_output,
  regex = "\\bSample-Size Adjusted BIC\\s+([-\\d\\.]+)\\b"
)

Arguments

regex	Regular Expression pattern to capture and extract contents.
source	Text to run the regex against.
parameter_name	Variable name in Mplus output to extract.
mplus_output	Text containing model output. This should be the text read from the file (not a file path).

Value

A numeric value corresponding to the desired quantity.

Functions

• extract_scalar_float: Generalizable function to return a single numeric value.

• extract_named_wald: Determine the estimate, standard error, z-score, and two-tailed p-value of an estimate (ie, the results of a Wald test).

• extract_output_filename: Determine the path of the Mplus output file.

• extract_free_parameter_count: Determine the number of free parameters for the model estimation.

• extract_loglikelihood: Determine the log likelihood for the model estimation.

• extract_scaling_correction: Determine the H0 Scaling Correction Factor for the model estimation.

• extract_aic: Determine the AIC for the model estimation.

• extract_bic: Determine the BIC for the model estimation.

• extract_bic_adjusted: Determine the Sample-Size Adjusted BIC for the model estimation.

Author(s)

Will Beasley

Examples

library(IalsaSynthesis) #Load the package into the current R session.

IALSA/IalsaSynthesis documentation built on April 20, 2021, 3:06 p.m.