CODEWITHSUNDEEP
rutf-8r-markdown
klaudia
klaudia

Reputation: 53

How to process UTF-8 characters for an ioslides_presentation generated with rmarkdown

I am trying to display special characters in an ioslides_presentation generated with rmarkdown, but instead of a Δ I always get <U+0394> in my final slides. When I execute the individual R chunk it stores Δ correctly. How do I ensure UTF-8 characters are processed correctly using rmarkdown?

title: "Untitled" author: "K" date: "2 11 2020" output: ioslides_presentation

Δendo=ΔEC


test <- c("Δendo", "ΔEC")

test

encoding fail

Upvotes: 1

Views: 226

Answers (1)

Radovan Miletić
Radovan Miletić

Reputation: 2821

Worth reading: 9.2 Essentials of text data [Neth, H. (2020). ds4psy: Data Science for Psychologists]

R allows typing Unicode characters by entering backslash as the escape character \u... or \U... — with ... standing for a 4-digit hexadecimal code.
We can show up Unicode characters/symbols in R Markdown documents by using the asis_output() function of the knitr package:

---
title: "Untitled" 
author: "K" 
date: "2 11 2020" 
output: ioslides_presentation
---

## Teste

```{r teste, echo = FALSE}
test <- knitr::asis_output(c("\u0394endo", "\u0394EC"))
test
```

## Teste 1

```{r teste1, echo = FALSE}
test1 <- knitr::asis_output("\u0394endo=\u0394EC")
test1
```

## Embed into inline chunk

- We can directly embed into inline chunk the `knitr::asis_output()` function:  
- When I execute the individual R chunk it stores `r knitr::asis_output("\u0394")` correctly.  
- `r knitr::asis_output("\u0394endo=\u0394EC")`

Upvotes: 2

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