Package: projectLSA
Title: Shiny Application for Latent Structure Analysis with a Graphical
        User Interface
Version: 0.2.0
Date: 2026-10-23
Authors@R: 
    c(
      person(
        given = "Hasan",
        family = "Djidu",
        email = "hasandjidu@gmail.com",
        role = c("aut", "cre"),
        comment = c(ORCID = "0000-0003-1110-6815")
      ),
      person(
        given = "Heri",
        family = "Retnawati",
        role = "ctb",
        comment = c(ORCID = "0000-0002-1792-5873")
      ),
      person(
        given = "Samsul",
        family = "Hadi",
        role = "ctb",
        comment = c(ORCID = "0000-0003-3437-2542")
      ),
      person(
        given = "Haryanto",
        family = "",
        role = "ctb",
        comment = c(ORCID = "0000-0003-3322-904X")
      )
    )
Description: Provides an interactive Shiny-based toolkit for conducting
        latent structure analyses, including Latent Profile Analysis
        (LPA), Latent Class Analysis (LCA), Latent Trait Analysis
        (LTA/IRT), Exploratory Factor Analysis (EFA), Confirmatory
        Factor Analysis (CFA), and Structural Equation Modeling (SEM).
        The implementation is grounded in established methodological
        frameworks: LPA is supported through 'tidyLPA' (Rosenberg et
        al., 2018) <doi:10.21105/joss.00978>, LCA through 'poLCA'
        (Linzer & Lewis, 2011) <doi:10.32614/CRAN.package.poLCA> &
        'glca' (Kim & Kim, 2024) <doi:10.32614/CRAN.package.glca>,
        LTA/IRT via 'mirt' (Chalmers, 2012)
        <doi:10.18637/jss.v048.i06>, and EFA via 'psych' (Revelle,
        2025). SEM and CFA functionalities build upon the 'lavaan'
        framework (Rosseel, 2012) <doi:10.18637/jss.v048.i02>. The
        CFA/SEM module additionally supports multi-group invariance
        testing, latent growth modelling, ordinal indicators estimated
        from polychoric correlations, modification indices, and path
        diagram visualisation. Every module can save and restore an
        analysis session and export an 'R Markdown' HTML report whose
        sections can be drafted with an optional AI assistant. The
        assistant interprets the current results through one or several
        large language models reached with user-supplied API keys,
        including providers with a free tier. The application runs in a
        responsive HTML interface. Users can upload datasets or use
        built-in examples, fit models, compare fit indices, visualize
        results, and export outputs without programming.
License: MIT + file LICENSE
Depends: R (>= 4.0.0)
Encoding: UTF-8
Imports: shinyBS, colourpicker, curl, data.table, dplyr, DT, flextable,
        ggiraph, ggplot2, glca, haven, jsonlite, kableExtra, knitr,
        lavaan, magick, mclust, mirt, nnet, officer, plotly, poLCA,
        psych, purrr, readr, readxl, rlang, rmarkdown, scales, semPlot,
        semptools, shiny, shinycssloaders, shinyWidgets, stats,
        stringr, tibble, tidyr, tidyLPA, viridisLite, writexl
Suggests: pdftools, pkgdown, semTools, testthat (>= 3.0.0)
Roxygen: list(markdown = TRUE)
VignetteBuilder: knitr
URL: https://github.com/hdmeasure/projectLSA
BugReports: https://github.com/hdmeasure/projectLSA/issues
Config/roxygen2/version: 8.0.0
Config/testthat/edition: 3
Config/pak/sysreqs: libcairo2-dev cmake libfontconfig1-dev
        libfreetype6-dev libfribidi-dev libglpk-dev make
        libharfbuzz-dev libmagick++-dev gsfonts texlive libicu-dev
        libjpeg-dev libpng-dev libtiff-dev libuv1-dev libwebp-dev
        libxml2-dev libssl-dev libx11-dev zlib1g-dev
Repository: https://hdmeasure.r-universe.dev
Date/Publication: 2026-10-23 00:46:01 UTC
RemoteUrl: https://github.com/hdmeasure/projectlsa
RemoteRef: HEAD
RemoteSha: 7d4beb709f1b034b8618d280c6f04d5359047586
NeedsCompilation: no
Packaged: 2026-10-23 01:51:51 UTC; root
Author: Hasan Djidu [aut, cre] (ORCID: <https://orcid.org/0000-0003-1110-6815>),
  Heri Retnawati [ctb] (ORCID: <https://orcid.org/0000-0002-1792-5873>),
  Samsul Hadi [ctb] (ORCID: <https://orcid.org/0000-0003-3437-2542>),
  Haryanto [ctb] (ORCID: <https://orcid.org/0000-0003-3322-904X>)
Maintainer: Hasan Djidu <hasandjidu@gmail.com>