R code in RMarkdown documents

Communicating with Data in the Tidyverse

Timo Grossenbacher

Data Journalist

Adding R chunks

```{r}
x <- 2 + 2
x
```

4

2 plus 2 equals `r 2 + 2`.

2 plus 2 equals 4.

The `knitr` package

¹ R for Data Science (http://r4ds.had.co.nz/r-markdown.html)

R chunk options

```{r include=FALSE}
x <- 2 + 2
x
```

```{r}
x
```

4

More R chunk options

Option	Effect
include	Whether to show the R code chunk and its output.
echo	Whether to show the R code chunk.
message	Whether to show output messages.
warning	Whether to show output warnings.
eval	Whether to actually evaluate the R code chunk.

More options on the respective help page of the knitr package.

Let's try this out!

Communicating with Data in the Tidyverse