Graphical User Interface with Integrated 'Diagrammer' for 'Lavaan' R package lavaangui version 0.4.0 CRAN Task View: Psychometrics (https://CRAN.R-project.org/view=Psychometrics) Provides a graphical user interface with an integrated diagrammer for latent variable models from the 'lavaan' package. It offers two core functions: first, lavaangui() launches a web application that allows users to specify models by drawing path diagrams, fitting them, assessing model fit, and more; second, plot_lavaan() creates interactive path diagrams from models specified in 'lavaan'. After customizing a diagram interactively, export_plot() saves it to a file, enabling reproducible scripts without sacrificing fine-grained control over appearance. Karch (2024) <doi: 10.1080/10705511.2024.2420678> contains a tutorial. Software Imports: base64enc (>= 0.1.3), future (>= 1.33.0), haven (>= 2.5.3), jsonlite (>= 1.8.4), lavaan (>= 0.6-20), promises (>= 1.2.0.1), readr (>= 2.1.4), readxl (>= 1.4.3), shiny (>= 1.7.4), methods (>= 4.3.3), colorspace (>= 2.1.0), igraph (>= 2.0.3), tools (>= 4.3.3), utils (>= 4.3.3), DT (>= 0.33), plyr (>= 1.8.9), digest (>= 0.6.35) Julian D. Karch <j.d.karch@fsw.leidenuniv.nl> Comprehensive R Archive Network (CRAN) Julian D. Karch [aut, cre, cph] (ORCID: <https://orcid.org/0000-0002-1625-2822>) GPL (>= 3) 2026-04-14 application/tgz https://CRAN.R-project.org/package=lavaangui doi:10.32614/CRAN.package.lavaangui en-US