Package: MultiSpline
Type: Package
Title: Spline-Based Nonlinear Modeling for Multilevel and Longitudinal
        Data
Version: 0.2.0
Authors@R: person(given = "Subir",
                  family = "Hait",
                  email = "haitsubi@msu.edu",
                  role = c("aut", "cre"),
                  comment = c(ORCID = "0009-0004-9871-9677"))
Description: Provides a unified framework for fitting, predicting, and
        interpreting nonlinear relationships in single-level,
        multilevel, and longitudinal regression models. Flexible
        functional forms are supported using natural cubic splines
        ('splines'), B-splines ('splines'), and GAM smooths ('mgcv').
        Supports two-way and nested clustering via 'lme4', automatic
        knot selection by AIC or BIC, multilevel R-squared
        decomposition (Nakagawa-Schielzeth marginal and conditional
        R-squared with level-specific variance partitioning), a
        postestimation suite returning first and second derivatives
        with confidence bands, turning points and inflection regions,
        and a model comparison workflow contrasting linear, polynomial,
        and spline fits by AIC, BIC, and likelihood-ratio tests.
        Cluster heterogeneity in nonlinear effects is supported via
        random-slope spline terms.
Depends: R (>= 4.2.0)
Imports: stats, lme4, mgcv, dplyr, ggplot2, rlang, splines
Suggests: lmerTest, knitr, rmarkdown, reformulas, numDeriv
License: GPL-3
Encoding: UTF-8
Language: en-US
URL: https://github.com/causalfragility-lab/MultiSpline
BugReports: https://github.com/causalfragility-lab/MultiSpline/issues
Roxygen: list(markdown = TRUE)
RoxygenNote: 7.3.3
Config/pak/sysreqs: cmake make
Repository: https://causalfragility-lab.r-universe.dev
Date/Publication: 2026-04-16 04:04:47 UTC
RemoteUrl: https://github.com/causalfragility-lab/multispline
RemoteRef: HEAD
RemoteSha: c2b025e42c8310d90c50931d4262925e5296f566
NeedsCompilation: no
Packaged: 2026-07-15 07:31:30 UTC; root
Author: Subir Hait [aut, cre] (ORCID: <https://orcid.org/0009-0004-9871-9677>)
Maintainer: Subir Hait <haitsubi@msu.edu>