CODEWITHSUNDEEP
htmlrknitrr-markdownpandoc
Carl Parker
Carl Parker

Reputation: 1005

Knitr, RMarkdown: How to have Latex page break omitted in HTML Output

I have an RMarkdown file that I want to publish to both HTML and PDF. I use a page break command, \newpage, in the file to insert a page break in the PDF output. However, in the HTML output, the \newpage shows up as part of the content.

How do I get knitr/pandoc to omit the \newpage from the HTML output?

I tried embedding the \newpage in an HTML comment, but then it had no effect in the PDF output.

Here is the Rmd file.

---
title: 'RMarkdown Test'
author: "Carl Parker"
date: "July 16, 2017"
output: 
  pdf_document: default
  html_document:
    keep_md: yes
--- 


# Page 1 #

\newpage

# Page 2 #


**--- END ---**

Here is the code that builds/renders.

library( "rmarkdown" )
library( "knitr" )

render( "test-1.rmd", output_format = "all" )


# --- END ---

Upvotes: 0

Views: 457

Answers (1)

Sébastien Rochette
Sébastien Rochette

Reputation: 6661

If you want that a code execute only for pdf and not for html, you may use function knitr::pandoc_to() as follows. You can also use it to write some text only for html or for pdf:
Be careful with \, it needs to be doubled \\ when called in a paste or cat inside a R code.

---
title: "RMarkdown Test"
author: "Carl Parker"
date: "July 16, 2017"
output:
  html_document:
    keep_md: yes
  pdf_document: default
--- 

```{r setup, include=FALSE}
knitr::opts_chunk$set(echo = TRUE)
```


# Page 1 #
<!-- use newpage for latex only -->
`r if(knitr:::pandoc_to() == "latex") {paste("\\newpage")}`

<!-- Specific text for html or pdf -->
`r ifelse(knitr:::pandoc_to() == "html", "Text in html output only", "Text in pdf output only")`

# Page 2 #


**--- END ---**

Upvotes: 1

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