---
title: "Advanced rtables - Custom Split Functions"
subtitle: Contributed by Johnson & Johnson Innovative Medicine
date: "2025-10-22"
author:
- Gabriel Becker
- Dan Hofstaedter
output:
    rmarkdown::html_document:
        theme: "spacelab"
        highlight: "kate"
        toc: true
        toc_float: true
        code_folding: show
vignette: >
  %\VignetteIndexEntry{Advanced rtables - Custom Split Functions}
  %\VignetteEncoding{UTF-8}
  %\VignetteEngine{knitr::rmarkdown}
editor_options:
  markdown:
      wrap: 72
  chunk_output_type: console
---

```{r, include = FALSE}
suggested_dependent_pkgs <- c("dplyr")
knitr::opts_chunk$set(
  collapse = TRUE,
  comment = "#>",
  eval = all(vapply(
    suggested_dependent_pkgs,
    requireNamespace,
    logical(1),
    quietly = TRUE
  ))
)
```

```{r, echo=FALSE}
knitr::opts_chunk$set(comment = "#")
```

# Coming Soon

  - [`make_split_fun` and Its Effective
    Use](./guided_advanced_split_funs_make_split_fun.html) `make_split_fun` and
    recognizing when to specify `pre`, `core`, and `post` behavior
    customizations
  - [Combining And Creating Behavior Building
    Blocks](./guided_advanced_split_funs_new_bbbs.html) The split function
    behavior building blocks provided by `rtables`, how to use and
    combine them, and how to create your own
  - [Some Complex Worked
    Examples](./guided_advanced_split_funs_worked_ex.html) Combining
    these topics to create complex custom split functions