Package: nlpsem
Type: Package
Title: Nonlinear Longitudinal Process in Structural Equation Modeling
Version: 0.4
Authors@R: c(person(given = "Jin",
           family = "Liu",
           role = c("aut", "cre"),
           email = "Veronica.Liu0206@gmail.com"))
Description: Provides computational tools for nonlinear longitudinal
        models, in particular the intrinsically nonlinear models, in
        four scenarios: (1) univariate longitudinal processes with
        growth factors, with or without covariates including
        time-invariant covariates (TICs) and time-varying covariates
        (TVCs); (2) multivariate longitudinal processes that facilitate
        the assessment of correlation or causation between multiple
        longitudinal variables; (3) multiple-group models for scenarios
        (1) and (2) to evaluate differences among manifested groups,
        and (4) longitudinal mixture models for scenarios (1) and (2),
        with an assumption that trajectories are from multiple latent
        classes. The methods implemented are introduced in Liu (2025)
        <doi:10.3758/s13428-025-02596-4>.
License: GPL (>= 3)
Encoding: UTF-8
LazyData: true
Depends: R (>= 4.0.0), OpenMx (>= 2.21.8)
Imports: ggplot2, dplyr, tidyr, stringr, Matrix, nnet, readr, methods,
        grDevices, stats, utils
RoxygenNote: 7.3.3
URL: https://github.com/Veronica0206/nlpsem
BugReports: https://github.com/Veronica0206/nlpsem/issues
Suggests: testthat (>= 3.0.0), knitr, rmarkdown
VignetteBuilder: knitr
Config/testthat/edition: 3
NeedsCompilation: no
Packaged: 2026-07-04 05:15:17 UTC; root
Author: Jin Liu [aut, cre]
Maintainer: Jin Liu <Veronica.Liu0206@gmail.com>
Config/pak/sysreqs: make libicu-dev libx11-dev
Repository: https://veronica0206.r-universe.dev
Date/Publication: 2026-06-04 01:16:02 UTC
RemoteUrl: https://github.com/veronica0206/nlpsem
RemoteRef: HEAD
RemoteSha: fac8faa673b9ef32875324468d8bc961f3e1a7d9