Package 'revealjs' reference manual

Title:	R Markdown Format for 'reveal.js' Presentations
Description:	R Markdown format for 'reveal.js' presentations, a framework for easily creating beautiful presentations using HTML.
Authors:	Christophe Dervieux [cre], JJ Allaire [aut], Hakim El Hattab [aut, cph] (reveal.js, https://github.com/hakimel/reveal.js), Asvin Goel [ctb, cph] (chalkboard plugin), Greg Denehy [ctb, cph] (menu plugin), Posit Software, PBC [cph, fnd]
Maintainer:	Christophe Dervieux <[email protected]>
License:	MIT + file LICENSE
Version:	0.9.1.9007
Built:	2024-12-22 03:32:41 UTC
Source:	https://github.com/rstudio/revealjs

Convert to a reveal.js presentation

Description

Format for converting from R Markdown to a reveal.js presentation.

Usage

revealjs_presentation(
  incremental = FALSE,
  center = FALSE,
  slide_level = 2,
  toc = FALSE,
  toc_depth = 3,
  fig_width = 8,
  fig_height = 6,
  fig_retina = if (!fig_caption) 2,
  fig_caption = FALSE,
  self_contained = TRUE,
  theme = "simple",
  transition = "convex",
  background_transition = "fade",
  reveal_options = NULL,
  reveal_plugins = NULL,
  highlight = "default",
  mathjax = "default",
  template = "default",
  css = NULL,
  includes = NULL,
  keep_md = FALSE,
  lib_dir = NULL,
  pandoc_args = NULL,
  extra_dependencies = NULL,
  md_extensions = NULL,
  ...
)
revealjs_presentation(
  incremental = FALSE,
  center = FALSE,
  slide_level = 2,
  toc = FALSE,
  toc_depth = 3,
  fig_width = 8,
  fig_height = 6,
  fig_retina = if (!fig_caption) 2,
  fig_caption = FALSE,
  self_contained = TRUE,
  theme = "simple",
  transition = "convex",
  background_transition = "fade",
  reveal_options = NULL,
  reveal_plugins = NULL,
  highlight = "default",
  mathjax = "default",
  template = "default",
  css = NULL,
  includes = NULL,
  keep_md = FALSE,
  lib_dir = NULL,
  pandoc_args = NULL,
  extra_dependencies = NULL,
  md_extensions = NULL,
  ...
)

Arguments

`incremental`	`TRUE` to render slide bullets incrementally. Note that if you want to reverse the default incremental behavior for an individual bullet you can precede it with `>`. For example: `⁠> - Bullet Text⁠`. See more in Pandoc's Manual
`center`	`TRUE` to vertically center content on slides
`slide_level`	Level of heading to denote individual slides. If `slide_level` is 2 (the default), a two-dimensional layout will be produced, with level 1 headers building horizontally and level 2 headers building vertically. It is not recommended that you use deeper nesting of section levels with reveal.js.
`toc`	`TRUE` to include a table of contents in the output (only level 1 headers will be included in the table of contents).
`toc_depth`	Depth of headers to include in table of contents
`fig_width`	Default width (in inches) for figures
`fig_height`	Default height (in inches) for figures
`fig_retina`	Scaling to perform for retina displays (defaults to 2, which currently works for all widely used retina displays). Set to `NULL` to prevent retina scaling. Note that this will always be `NULL` when `keep_md` is specified (this is because `fig_retina` relies on outputting HTML directly into the markdown document).
`fig_caption`	`TRUE` to render figures with captions
`self_contained`	Whether to generate a full LaTeX document (`TRUE`) or just the body of a LaTeX document (`FALSE`). Note the LaTeX document is an intermediate file unless `keep_tex = TRUE`.
`theme`	Visual theme ("simple", "dark", "black", "sky", "beige", "serif", "solarized", "blood", "moon", "night", "league", or "white")
`transition`	Slide transition ( "convex", "fade", "slide", "concave", "zoom", or "none" )
`background_transition`	Slide background-transition ( "convex", "fade", "slide", "concave", "zoom", or "none" )
`reveal_options`	Additional options to specify for reveal.js (see https://revealjs.com/config/ for details). Options for plugins can also be passed, using plugin name as first level key (e.g `list(slideNumber = FALSE, menu = list(number = TRUE))`).
`reveal_plugins`	Reveal plugins to include. Available plugins include "notes", "search", "zoom", "chalkboard", and "menu". Note that `self_contained` must be set to `FALSE` in order to use Reveal plugins.
`highlight`	Syntax highlighting style passed to Pandoc. Supported built-in styles include "default", "tango", "pygments", "kate", "monochrome", "espresso", "zenburn", "haddock", and "breezedark". Two custom styles are also included, "arrow", an accessible color scheme, and "rstudio", which mimics the default IDE theme. Alternatively, supply a path to a ‘⁠.theme⁠’ file to use a custom Pandoc style. Note that custom theme requires Pandoc 2.0+. Pass `NULL` to prevent syntax highlighting.
`mathjax`	Include mathjax. The "default" option uses an https URL from a MathJax CDN. The "local" option uses a local version of MathJax (which is copied into the output directory). You can pass an alternate URL or pass `NULL` to exclude MathJax entirely.
`template`	Pandoc template to use for rendering. Pass "default" to use the rmarkdown package default template; pass `NULL` to use pandoc's built-in template; pass a path to use a custom template that you've created. Note that if you don't use the "default" template then some features of `revealjs_presentation` won't be available (see the Templates section below for more details).
`css`	CSS and/or Sass files to include. Files with an extension of .sass or .scss are compiled to CSS via `sass::sass()`. Also, if `theme` is a `bslib::bs_theme()` object, Sass code may reference the relevant Bootstrap Sass variables, functions, mixins, etc.
`includes`	Named list of additional content to include within the document (typically created using the `includes` function).
`keep_md`	Keep the markdown file generated by knitting.
`lib_dir`	Directory to copy dependent HTML libraries (e.g. jquery, bootstrap, etc.) into. By default this will be the name of the document with `_files` appended to it.
`pandoc_args`	Additional command line options to pass to pandoc
`extra_dependencies`	Additional function arguments to pass to the base R Markdown HTML output formatter `rmarkdown::html_document_base()`.
`md_extensions`	Markdown extensions to be added or removed from the default definition of R Markdown. See the `rmarkdown_format` for additional details.
`...`	Ignored

Details

In reveal.js presentations you can use level 1 or level 2 headers for slides. If you use a mix of level 1 and level 2 headers then a two-dimensional layout will be produced, with level 1 headers building horizontally and level 2 headers building vertically.

For additional documentation on using revealjs presentations see https://github.com/rstudio/revealjs

Value

R Markdown output format to pass to rmarkdown::render()

About plugins

Built-in plugins with reveal.js

Zoom

When activated, ALT + Click can be used to zoom on a slide.

Notes

Show a speaker view in a separated window. This speaker view contains a timer, current slide, next slide, and speaker notes. It also duplicate the window to have presentation mode synchronized with main presentation.

Use

::: notes
Content of speaker notes
:::

to create notes only viewable in presentation mode.

Search

When opt-in, it is possible to show a search box when pressing CTRL + SHIFT + F. It will seach in the whole presentation, and highlight matched words. The matches will also be highlighted in overview mode (pressing ESC to see all slides in one scrollable view)

Chalkboard

A plugin adding a chalkboard and slide annotation

Version is currently used and documentation for configurations can be found at rajgoel/reveal.js-plugins

By default, chalkboard and annotations modes will be accessible using keyboard shortcuts, respectively, pressing B, or pressing C. In addition, buttons on the bottom left can be added by using the following

reveal_plugins: 
  - chalkboard
reveal_options:
  chalkboard:
    toggleNotesButton: true
    toggleChalkboardButton: true

Examples

## Not run: 

library(rmarkdown)
library(revealjs)

# simple invocation
render("pres.Rmd", revealjs_presentation())

# specify an option for incremental rendering
render("pres.Rmd", revealjs_presentation(incremental = TRUE))

## End(Not run)

## Not run: 

library(rmarkdown)
library(revealjs)

# simple invocation
render("pres.Rmd", revealjs_presentation())

# specify an option for incremental rendering
render("pres.Rmd", revealjs_presentation(incremental = TRUE))

## End(Not run)

Package 'revealjs'

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