Package: trendtestR
Type: Package
Title: Exploratory Trend Analysis and Visualization for Time-Series and
        Grouped Data
Version: 1.0.1
Authors@R: c(
    person(
      "Gelan Huang",
      email = "huanggelan97@icloud.com",
      role = c("aut", "cre")
    )
  )
Description: Provides a set of exploratory data analysis (EDA) tools for 
    visualizing trends, diagnosing data types for beginner-friendly workflows, 
    and automatically routing to suitable statistical tests or trend exploration 
    models. Includes unified plotting functions for trend lines, grouped boxplots, 
    and comparative scatterplots; automated statistical testing (e.g., t-test, 
    Wilcoxon, ANOVA, Kruskal-Wallis, Tukey, Dunn) with optional effect size 
    calculation; and model-based trend analysis using generalized additive 
    models (GAM) for count data, generalized linear models (GLM) for continuous 
    data, and zero-inflated models (ZIP/ZINB) for count data with potential 
    zero-inflation. 
    Also supports time-window continuity checks, cross-year 
    handling in compare_monthly_cases(), and ARIMA-ready preparation with 
    stationarity diagnostics, ensuring consistent parameter styles for 
    reproducible research and user-friendly workflows.Methods are 
    based on R Core Team (2024) <https://www.R-project.org/>, 
    Wood, S.N.(2017, ISBN:978-1498728331),
    Hyndman RJ, Khandakar Y (2008) <doi:10.18637/jss.v027.i03>, 
    Simon Jackman (2024) <https://github.com/atahk/pscl/>,    
    Achim Zeileis, Christian Kleiber, Simon Jackman (2008) <doi:10.18637/jss.v027.i08>.
License: GPL (>= 3)
Encoding: UTF-8
Imports: dplyr, ggplot2 (>= 3.3.0), lubridate, emmeans, e1071,
        forecast, MASS, multcomp, tidyselect, tidyr, tseries, car, FSA,
        ggpubr, rlang, splines, pscl, mgcv
RoxygenNote: 7.3.2
Suggests: testthat (>= 3.0.0), mockr, knitr, rmarkdown
Config/testthat/edition: 3
URL: https://github.com/GrahnH/trendtestR
BugReports: https://github.com/GrahnH/trendtestR/issues
VignetteBuilder: knitr
NeedsCompilation: no
Packaged: 2025-08-27 15:32:51 UTC; 10025
Author: Gelan Huang [aut, cre]
Maintainer: Gelan Huang <huanggelan97@icloud.com>
Depends: R (>= 3.5.0)
Repository: CRAN
Date/Publication: 2025-09-02 05:40:02 UTC
Built: R 4.6.0; ; 2026-05-01 05:21:33 UTC; unix
