Convert markdown to HTML using knit() and mark_html()

This is a convenience function to knit the input markdown source and call markdown::mark_html() in the markdown package to convert the result to HTML.

knit2html(
  input,
  output = NULL,
  ...,
  envir = parent.frame(),
  text = NULL,
  quiet = FALSE,
  encoding = "UTF-8",
  force_v1 = getOption("knitr.knit2html.force_v1", FALSE)
)

Arguments

input

Path to the input file.

output

Path to the output file for knit(). If NULL, this function will try to guess a default, which will be under the current working directory.

...

Options passed to markdown::mark_html().

envir

Environment in which code chunks are to be evaluated, for example, parent.frame(), new.env(), or globalenv()).

text

A character vector. This is an alternative way to provide the input file.

quiet

Boolean; suppress the progress bar and messages?

encoding

Encoding of the input file; always assumed to be UTF-8 (i.e., this argument is effectively ignored).

force_v1

Boolean; whether to force rendering the input document as an R Markdown v1 document, even if it is for v2.

Value

If the argument text is NULL, a character string (HTML code) is returned; otherwise the result is written into a file and the filename is returned.

Note

The markdown package is for R Markdown v1, which is much less powerful than R Markdown v2, i.e. the rmarkdown package (https://rmarkdown.rstudio.com). To render R Markdown v2 documents to HTML, please use rmarkdown::render() instead.

See also

knit, markdown::mark_html

Examples

# a minimal example
writeLines(c("# hello markdown", "```{r hello-random, echo=TRUE}", "rnorm(5)", "```"),
    "test.Rmd")
knit2html("test.Rmd")
#> 
#> 
#> processing file: test.Rmd
#> 1/2               
#> 2/2 [hello-random]
#> output file: test.md
if (interactive()) browseURL("test.html")

unlink(c("test.Rmd", "test.html", "test.md"))