render_html

From knitr v1.26 by Yihui Xie

Set output hooks for different output formats

These functions set built-in output hooks for LaTeX, HTML, Markdown, reStructuredText, AsciiDoc and Textile.

Usage

render_html()
render_asciidoc()
render_latex()
render_sweave()
render_listings()
render_markdown(strict = FALSE, fence_char = "`")
render_jekyll(highlight = c("pygments", "prettify", "none"),
  extra = "")
render_rst(strict = FALSE)
render_textile()

Arguments

strict: Boolean; whether to use strict markdown or reST syntax. For markdown, if TRUE, code blocks will be indented by 4 spaces, otherwise they are put in fences made by three backticks. For reST, if TRUE, code is put under two colons and indented by 4 spaces, otherwise it is put under the sourcecode directive (this is useful for e.g. Sphinx).
fence_char: A single character to be used in the code blocks fence. This can be e.g. a backtick or a tilde, depending on your Markdown rendering engine.
highlight: Which code highlighting engine to use: if pygments, the Liquid syntax is used (default approach Jekyll); if prettify, the output is prepared for the JavaScript library prettify.js; if none, no highlighting engine will be used, and code blocks are simply indented by 4 spaces).
extra: Extra tags for the highlighting engine. For pygments, this can be 'linenos'; for prettify, it can be 'linenums'.

Details

There are three variants of markdown documents: ordinary markdown (render_markdown(strict = TRUE)), extended markdown (e.g. GitHub Flavored Markdown and pandoc; render_markdown(strict = FALSE)), and Jekyll (a blogging system on GitHub; render_jekyll()). For LaTeX output, there are three variants as well: knitr's default style (render_latex(); use the LaTeX framed package), Sweave style (render_sweave(); use Sweave.sty) and listings style (render_listings(); use LaTeX listings package). Default HTML output hooks are set by render_html(); render_rst() and render_asciidoc() are for reStructuredText and AsciiDoc respectively.

These functions can be used before knit() or in the first chunk of the input document (ideally this chunk has options include = FALSE and cache = FALSE) so that all the following chunks will be formatted as expected.

You can use knit_hooks to further customize output hooks; see references.

Value

NULL; corresponding hooks are set as a side effect

References

See output hooks in https://yihui.name/knitr/hooks/.

Jekyll and Liquid: https://github.com/jekyll/jekyll/wiki/Liquid-Extensions; prettify.js: http://code.google.com/p/google-code-prettify/

Documentation reproduced from package knitr, version 1.26, License: GPL

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