Highlighting Text Inline in Rmarkdown Or Bookdown PDF

Publishing Your Results
1

HI,

I am trying to change the colour of a font in RMarkdown. I would like to be able to highlight in the document when i use a package. For example this seems to work for simple colours $\color{blue}{\text{readxl}}$ but I would like to set it up in such a way that the colour can use an RGB code for maybe something like steel blue (#003766). Using my previous method causes my document to crash with an unrecognizable colour error

! Illegal parameter number in definition of .

0
l.140 ...reation of this section (\color{#003766}
{\text{knitr}}), (\color...

My second question if someone has the time is to be able to format the colour behind the text, highlighting it like an inline code chunk for example library(rstudio).In essence i want to be able to highlight any packages I use in my analysis

Thank you for your time

2

Hi,

Could you give some more defined example, preferably the file with code so we can better understand the issue?

Thanks!

3

Hi,

A working example can be found here
https://dr-harper.github.io/rmarkdown-cookbook/changing-font-colour.html
Unfortunately it doesn't seem to work for something like book-down

An example of the shading of a word I was thinking of can be found here but its only for HTML

Thanks

4

Hi,

I found a way to do it for PDF, using LaTeX commands:

---
title: "RCommunityForum"
author: "PJ"
date: "13/07/2019"
output:
  word_document: default
  pdf_document:
    extra_dependencies: xcolor
  html_document:
    df_print: paged
---

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

## R Markdown

\definecolor{fancyTextColor}{HTML}{4284f5}
\definecolor{hightlightColor}{HTML}{FFFF66}

This is an R Markdown document. \colorbox{hightlightColor}{Markdown} is a simple formatting syntax for authoring HTML, PDF, and MS Word documents. For more details on using R Markdown see <http://rmarkdown.rstudio.com>.

When you click the **Knit** button \textcolor{fancyTextColor}{a document will be generated} that includes both content as well as the output of any embedded R code chunks within the document. You can embed an R code chunk like this:

```{r cars}
summary(cars)
\```

* Careful if you copy paste this in markdown since I had to use \ to format the code as it uses ``` as well

Here are some websites for extra info
https://dr-harper.github.io/rmarkdown-cookbook/changing-font-colour.html

Grtz
PJ

5

Thank you very much for the reply PJ.
It works but when i try and integrate it into bookdown it seems to come unstuck

I am using the thesisdown package and i put the extra dependency in the YAML header as

---
output:
  thesisdown::thesis_pdf: default
  extra_dependencies: xcolor
---

I get the error

! LaTeX Error: Undefined color model `HTML'.

Error: Failed to compile test_document.tex. See The R package tinytex - Helper Functions to Manage TinyTeX, and Compile LaTeX Documents - Yihui Xie | 谢益辉 for debugging tips. See test_document.log for more info.
Execution halted

6

Hi,

Try using other color models and see if it produces the same error. It's possible that the HEX color values is not implemented by that package

\definecolor{fancyTextColor}{HTML}{4284f5}
\definecolor{fancyTextColor}{RGB}{66, 132, 245}
\definecolor{fancyTextColor}{rgb}{0.258, 0.517, 0.960}

If this doesn't help it's probably related to the package and not to LaTeX

PJ

1 Like
7

That's the one :slight_smile:

Thank you very much....I was banging my head against the wall for this

8

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