Shiny Application for Latent Structure Analysis with a Graphical User Interface R package projectLSA version 0.0.9 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>. Users can upload datasets or use built-in examples, fit models, compare fit indices, visualize results, and export outputs without programming. Software Depends: R (>= 4.0.0) Imports: colourpicker, data.table, dplyr, DT, flextable, ggiraph, ggplot2, glca, haven, kableExtra, knitr, lavaan, magick, mclust, mirt, officer, plotly, poLCA, psych, purrr, readr, readxl, rlang, rmarkdown, scales, semPlot, semptools, shiny, shinyWidgets, stats, stringr, tibble, tidyr, tidyLPA, tidyverse, viridisLite Suggests: pkgdown, testthat (>= 3.0.0) Hasan Djidu <hasandjidu@gmail.com> Comprehensive R Archive Network (CRAN) 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>) MIT + file LICENSE (https://CRAN.R-project.org/package=projectLSA/LICENSE) 2026-05-09 application/tgz https://CRAN.R-project.org/package=projectLSA doi:10.32614/CRAN.package.projectLSA